Philippines/ Vietnam: Typhoon Tembin/ Vinta 33W 241200Z nr 8.3N 112.1E, moving W 13kt 975hPa (JMA) – Updated 24 Dec 2017 1438z (GMT/UTC)

Typhoon Tembin (33W)

(Vinta in Philippines)

TYPHOON “VINTA” IS NOW OUTSIDE THE PHILIPPINE AREA OF RESPONSIBILITY (PAR). – PAGASA

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1727-003

TY 1727 (Tembin)
Issued at 12:45 UTC, 24 December 2017

<Analysis at 12 UTC, 24 December>
Scale
Intensity Strong
Center position N8°20′ (8.3°)
E112°05′ (112.1°)
Direction and speed of movement W 25 km/h (13 kt)
Central pressure 975 hPa
Maximum wind speed near center 35 m/s (70 kt)
Maximum wind gust speed 50 m/s (100 kt)
≥ 50 kt wind area ALL 70 km (40 NM)
≥ 30 kt wind area NW 390 km (210 NM)
SE 220 km (120 NM)
<Forecast for 00 UTC, 25 December>
Intensity Strong
Center position of probability circle N8°25′ (8.4°)
E109°25′ (109.4°)
Direction and speed of movement W 25 km/h (13 kt)
Central pressure 975 hPa
Maximum wind speed near center 35 m/s (70 kt)
Maximum wind gust speed 50 m/s (100 kt)
Radius of probability circle 70 km (40 NM)
Storm warning area ALL 150 km (80 NM)
<Forecast for 12 UTC, 25 December>
Intensity
Center position of probability circle N8°30′ (8.5°)
E106°55′ (106.9°)
Direction and speed of movement W 20 km/h (12 kt)
Central pressure 990 hPa
Maximum wind speed near center 30 m/s (55 kt)
Maximum wind gust speed 40 m/s (80 kt)
Radius of probability circle 110 km (60 NM)
Storm warning area ALL 180 km (95 NM)
<Forecast for 12 UTC, 26 December>
Intensity
TD
Center position of probability circle N9°25′ (9.4°)
E102°55′ (102.9°)
Direction and speed of movement W 20 km/h (10 kt)
Central pressure 1004 hPa
Radius of probability circle 180 km (95 NM)

Philippines

SEVERE WEATHER BULLETIN #29-FINAL
FOR:Typhoon Vinta
Tropical Cyclone: ALERT

ISSUED AT:10:30 AM, 24 December 2017

TYPHOON “VINTA” IS NOW OUTSIDE THE PHILIPPINE AREA OF RESPONSIBILITY (PAR).

  • Scattered to widespread moderate to occasionally heavy rains will still prevail over Palawan, especially over the southern section. Residents of these areas must take appropriate actions against flooding and landslides, coordinate with their respective local disaster risk reduction and management offices, and continue monitoring for updates.
  • Sea travel remains risky over the western seaboard of Palawan due to the Typhoon.

 

 

PAGASA Track Satellite Image

 

Location of eye/center: At 9:30 AM today, the eye of Typhoon “VINTA” was located based on all available data at 290 km South of Pagasa Island, Palawan (OUTSIDE PAR) (08.4 °N, 114.2 °E)
Strength: Maximum sustained winds of 120 kph near the center and gustiness of up to 145 kph
Forecast Movement: Forecast to move West at 26 kph
Forecast Positions:
  • 24 Hour(Tomorrow morning): 585 km West Southwest of Pagasa Island, Palawan(8.7°N, 109.3°E)

 

NO TROPICAL CYCLONE WARNING SIGNAL

With this development and unless re-entry occurs, this is the final bulletin for this weather disturbance.

 

HIMAWARI Imagery

rb_lalo-animated7

TROPICAL STORM RISK (TSR)

NW Pacific: Storm Alert issued at 24 Dec, 2017 6:00 GMT

Typhoon TEMBIN is currently located near 8.3 N 113.2 E with maximum 1-min sustained winds of 80 kts (92 mph). TEMBIN is a category 1 storm on the Saffir Simpson Hurricane Wind Scale. TEMBIN is forecast to affect land to the following likelihood(s) at the given lead time(s):

Red Alert Country(s) or Province(s)
    Vietnam
        probability for CAT 1 or above is 50% in about 24 hours
        probability for TS is 95% within 12 hours
Red Alert City(s) and Town(s)
    Bac Lieu (9.3 N, 105.7 E)
        probability for CAT 1 or above is 40% in about 36 hours
        probability for TS is 70% in about 36 hours

Yellow Alert Country(s) or Province(s)
    Cambodia
        probability for CAT 1 or above is 15% in about 36 hours
        probability for TS is 70% in about 24 hours
Yellow Alert City(s) and Town(s)
    Phan Thiet (10.9 N, 108.1 E)
        probability for CAT 1 or above is 10% in about 24 hours
        probability for TS is 95% in about 24 hours
    Phan Rang (11.6 N, 109.0 E)
        probability for TS is 90% within 12 hours
    Ho Chi Minh City (10.8 N, 106.7 E)
        probability for CAT 1 or above is 15% in about 36 hours
        probability for TS is 80% in about 24 hours
    Nha Trang (12.2 N, 109.2 E)
        probability for TS is 75% in about 24 hours
    Can Tho (10.0 N, 105.8 E)
        probability for CAT 1 or above is 20% in about 36 hours
        probability for TS is 70% in about 24 hours
    Nam Can (8.8 N, 105.0 E)
        probability for CAT 1 or above is 20% in about 36 hours
        probability for TS is 55% in about 36 hours
    Duong Dong (10.2 N, 104.0 E)
        probability for CAT 1 or above is 15% in about 36 hours
        probability for TS is 50% in about 36 hours
    Kompong Som (10.6 N, 103.7 E)
        probability for CAT 1 or above is 10% in about 36 hours
        probability for TS is 45% in about 36 hours

Green Alert City(s) and Town(s)
    Phnom Penh (11.6 N, 104.8 E)
        probability for TS is 45% in about 36 hours
    Tuy Hoa (13.1 N, 109.3 E)
        probability for TS is 35% in about 24 hours
    Kracheh (12.5 N, 106.0 E)
        probability for TS is 35% in about 36 hours
    Kas Kong (11.3 N, 103.2 E)
        probability for TS is 35% in about 48 hours

Note that
Red Alert (Severe) is CAT 1 or above to between 31% and 100% probability.
Yellow Alert (Elevated) is CAT 1 or above to between 10% and 30% probability, or TS to above 50% probability.
Green Alert (Low) is TS to between 31% and 50% probability.
CAT 1 means Typhoon strength winds of at least 74 mph, 119 km/h or 64 knots 1-min sustained.
TS means Tropical Storm strength winds of at least 39 mph, 63 km/h or 34 knots 1-min sustained.

 

For graphical forecast information and further details please visit http://www.tropicalstormrisk.com/

201733w3201733w_03

 

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wp201733_5day3

(Above image: @wunderground)

Tropical Storm Tembin: Philippines rescuers seek victims

99351631_mediaitem99351630

The Salvador district is among those badly affected – REUTERS

“Rescuers are searching for victims of a tropical storm in the southern Philippines which has killed some 200 people in mudslides and flash floods.

Rescue teams have yet to reach some of the affected areas on Mindanao island.

About 150 people are still missing after Storm Tembin swept through the region, with another 70,000 displaced from their homes.

The rescue effort is being hampered by continuing heavy rain, power cuts and blocked roads.

In the early hours of Sunday, Tembin, known as Vinta in the Philippines, was south of the Spratly Islands, heading towards southern Vietnam. It had gathered strength, with maximum winds of 120km/h (75 mph).

United Nations Secretary General Antonio Guterres said he was saddened by the loss of life, adding that the UN was ready to help.

There are fears the death toll will rise further.

Philippine President Rodrigo Duterte is due to visit communities affected by Storm Tembin on Sunday.

Police said 135 people had been killed and 72 were missing in northern Mindanao. Forty-seven were killed and 72 missing in the Zamboanga peninsula. In Lanao del Sur, another 18 died.

Between 40,000 and 60,000 people are reported to be housed in evacuation centres.

The mountain village of Dalama was one of the worst affected places. Houses were buried in mud or engulfed in floodwaters.

“The flood was already close and the people were not able to get out from their homes,” survivor Armando Sangcopan told local TV.

The bodies of eight children were extracted from thick mud in the town of Salvador in Lanao del Norte, the Inquirer reports.

“It’s very painful to see the dead bodies of children, whom we also considered to be our own,” the principal, Ricardo Abalo, told the paper.

Aid workers said people had not heeded warnings to evacuate before Tembin arrived, either because they believed the storm would not be severe or they had nowhere else to go.

Risks of disease

Many victims were swept away from low-lying residential areas when the flash floods and landslides struck.

More deaths were reported in Bukidnon, Iligan and Misamis Occidental.

Andrew Morris, from the UN children’s agency Unicef in Mindanao, said in some areas there were big risks of disease, particularly for children, and restoring clean water supplies would be a priority.

“Lanao del Sur province is the poorest in the Philippines, and in the past seven months there have been around 350,000 people displaced in that province because of fighting,” he told the BBC, referring to battles between government forces and Islamist militants in Marawi.

Meanwhile, Richard Gordon, of the Philippines Red Cross, told the BBC: “We have already provided water and hot food.

“And we’re going to be distributing non-food items – certainly blankets, mosquito nets and certainly hygiene kits for those who are in evacuation centres so that we can alleviate the suffering of many of the folks there.

A week ago, Tropical Storm Kai-Tak hit the central Philippines, killing dozens.

The region is still recovering from Typhoon Haiyan, which killed more than 5,000 people and affected millions in 2013.” – BBC News

99347615_philippinesmindanao4641217

MARITIME/SHIPPING

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17122415

METAREA11 / TYPHOON_WARNING_JAPAN / 231200

WTJP22 RJTD 241200
WARNING 241200.
WARNING VALID 251200.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 1727 TEMBIN (1727) 975 HPA
AT 08.3N 112.1E SOUTH CHINA SEA MOVING WEST 13 KNOTS.
POSITION FAIR.
MAX WINDS 70 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES.
RADIUS OF OVER 30 KNOT WINDS 210 MILES NORTHWEST SEMICIRCLE AND 120
MILES ELSEWHERE.
FORECAST POSITION FOR 250000UTC AT 08.4N 109.4E WITH 40 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 70 KNOTS NEAR CENTER.
FORECAST POSITION FOR 251200UTC AT 08.5N 106.9E WITH 60 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 261200UTC AT 09.4N 102.9E WITH 95 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1004 HPA.
BECOMING TROPICAL DEPRESSION.

JAPAN METEOROLOGICAL AGENCY.=

Philippines

As of today, there is no Tropical Cyclone within Philippine Area of Responsibility (PAR).

PAGASA

=============================================================================

Do not use any information on this site for life or death decisions. All information is intended as supplementary to official sources. Kindly refer to your country’s official weather agency/government website for local warnings, advisories and bulletins.

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Vietnam: Tropical Storm KAI-TAK/ URDUJA (32W) 201800Z nr 6.9N 110.7E, moving W 12kt 998hPa (JMA) – Updated 20 Dec 2017 2015z (GMT/UTC)

Tropical Storm KAI-TAK (32W)

URDUJA in Philippines

TROPICAL STORM “URDUJA” OUTSIDE PAR – PAGASA

MAXIMUMSIGNIFICANT WAVE HEIGHT AT 201200Z IS 16 FEET – JTWC

 

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1726-001

TS 1726 (Kai-tak)
Issued at 18:40 UTC, 20 December 2017

<Analysis at 18 UTC, 20 December>
Scale
Intensity
Center position N6°55′ (6.9°)
E110°40′ (110.7°)
Direction and speed of movement W 20 km/h (12 kt)
Central pressure 998 hPa
Maximum wind speed near center 20 m/s (40 kt)
Maximum wind gust speed 30 m/s (60 kt)
≥ 30 kt wind area NW 280 km (150 NM)
SE 170 km (90 NM)
<Forecast for 06 UTC, 21 December>
Intensity
Center position of probability circle N6°30′ (6.5°)
E109°10′ (109.2°)
Direction and speed of movement W 15 km/h (8 kt)
Central pressure 998 hPa
Maximum wind speed near center 20 m/s (40 kt)
Maximum wind gust speed 30 m/s (60 kt)
Radius of probability circle 60 km (30 NM)
<Forecast for 18 UTC, 21 December>
Intensity
Center position of probability circle N6°05′ (6.1°)
E107°30′ (107.5°)
Direction and speed of movement W 15 km/h (9 kt)
Central pressure 1000 hPa
Maximum wind speed near center 18 m/s (35 kt)
Maximum wind gust speed 25 m/s (50 kt)
Radius of probability circle 90 km (50 NM)
<Forecast for 18 UTC, 22 December>
Intensity
TD
Center position of probability circle N4°55′ (4.9°)
E104°35′ (104.6°)
Direction and speed of movement WSW 15 km/h (8 kt)
Central pressure 1004 hPa
Radius of probability circle 200 km (110 NM)

HIMAWARI Imagery

rb_lalo-animated3

Joint Typhoon Warning Center (JTWC)

Tropical Storm 32W (Kai-tak) Warning #27
Issued at 20/1500Z

 

wp3217232w_201200sair

Google Earth Overlay
WTPN31 PGTW 201500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 32W (KAI-TAK) WARNING NR 027
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY

WARNING POSITION:
201200Z — NEAR 6.9N 111.9E
MOVEMENT PAST SIX HOURS – 225 DEGREES AT 07 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS – 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS – 090 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
270 NM NORTHWEST QUADRANT
REPEAT POSIT: 6.9N 111.9E

FORECASTS:
12 HRS, VALID AT:
210000Z — 6.2N 110.3E
MAX SUSTAINED WINDS – 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS – 165 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
300 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 260 DEG/ 09 KTS

24 HRS, VALID AT:
211200Z — 5.9N 108.5E
MAX SUSTAINED WINDS – 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 36 HR POSIT: 260 DEG/ 09 KTS

36 HRS, VALID AT:
220000Z — 5.5N 106.7E
MAX SUSTAINED WINDS – 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 48 HR POSIT: 260 DEG/ 10 KTS

EXTENDED OUTLOOK:
48 HRS, VALID AT:
221200Z — 5.2N 104.7E
MAX SUSTAINED WINDS – 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER

REMARKS:
201500Z POSITION NEAR 6.7N 111.5E.
TROPICAL STORM 32W (KAI-TAK), LOCATED APPROXIMATELY 387 NM
SOUTHEAST OF HO CHI MINH CITY, VIETNAM, HAS TRACKED
SOUTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 201200Z IS 16 FEET. NEXT
WARNINGS AT 202100Z, 210300Z, 210900Z AND 211500Z.//
NNNN

PAGASA-DOST

 

TROPICAL STORM RISK (TSR)

NW Pacific: Storm Alert issued at 20 Dec, 2017 12:00 GMT

Tropical Storm KAI-TAK is currently located near 6.9 N 111.9 E with maximum 1-min sustained winds of 35kts (40 mph). KAI-TAK is forecast to affect land to the following likelihood(s) at the given lead time(s):

 

Yellow Alert Country(s) or Province(s)
    Vietnam
        probability for TS is 80% in about 24 hours
Yellow Alert City(s) and Town(s)
    Phan Thiet (10.9 N, 108.1 E)
        probability for TS is 70% within 12 hours
    Bac Lieu (9.3 N, 105.7 E)
        probability for TS is 60% in about 24 hours
    Nam Can (8.8 N, 105.0 E)
        probability for TS is 55% in about 24 hours

Green Alert Country(s) or Province(s)
    Cambodia
        probability for TS is 40% in about 36 hours
Green Alert City(s) and Town(s)
    Can Tho (10.0 N, 105.8 E)
        probability for TS is 50% in about 24 hours
    Ho Chi Minh City (10.8 N, 106.7 E)
        probability for TS is 45% in about 24 hours

Note that
Yellow Alert (Elevated) is CAT 1 or above to between 10% and 30% probability, or TS to above 50% probability.
Green Alert (Low) is TS to between 31% and 50% probability.
CAT 1 means Typhoon strength winds of at least 74 mph, 119 km/h or 64 knots 1-min sustained.
TS means Tropical Storm strength winds of at least 39 mph, 63 km/h or 34 knots 1-min sustained.

 

For graphical forecast information and further details please visit http://www.tropicalstormrisk.com/

201732w2201732w_02

Other

wp201732_5day1

(Above image: @wunderground)

MARITIME/SHIPPING

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17122021

METAREA11 / TYPHOON_WARNING_JAPAN / 201800

WTJP21 RJTD 201800
WARNING 201800.
WARNING VALID 211800.
WARNING IS UPDATED EVERY 6 HOURS.
GALE WARNING.
TROPICAL STORM 1726 KAI-TAK (1726) 998 HPA
AT 06.9N 110.7E SOUTH CHINA SEA MOVING WEST 12 KNOTS.
POSITION FAIR.
MAX WINDS 40 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 150 MILES NORTHWEST SEMICIRCLE AND 90
MILES ELSEWHERE.
FORECAST POSITION FOR 210600UTC AT 06.5N 109.2E WITH 30 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
998 HPA, MAX WINDS 40 KNOTS NEAR CENTER.
FORECAST POSITION FOR 211800UTC AT 06.1N 107.5E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1000 HPA, MAX WINDS 35 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 221800UTC AT 04.9N 104.6E WITH 110 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
1004 HPA.
BECOMING TROPICAL DEPRESSION.

JAPAN METEOROLOGICAL AGENCY.=

 

=============================================================================

Do not use any information on this site for life or death decisions. All information is intended as supplementary to official sources. Kindly refer to your country’s official weather agency/government website for local warnings, advisories and bulletins.

India/ Arabian Sea: Tropical Cyclone OCKHI (03B) 041500Z position nr 15.7N 69.1E, moving NNE 06kt (JTWC) – Updated 04 Dec 2017 2020z (GMT/UTC)

Tropical Cyclone OCKHI (03B)

(=CATEGORY 1 Hurricane on the Saffir-Simpson Hurricane Wind Scale)

MAXIMUM SIGNIFICANT WAVE HEIGHT AT 041200Z IS 20 FEET – JTWC

Joint Typhoon Warning Center (JTWC)

Tropical Cyclone 03B (Ockhi) Warning #12
Issued at 02/1500Z

io03171

03b_041200sair

Google Earth Overlay
WTIO31 PGTW 041500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 03B (OCKHI) WARNING NR 020//
RMKS/
1. TROPICAL CYCLONE 03B (OCKHI) WARNING NR 020
01 ACTIVE TROPICAL CYCLONE IN NORTH IO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY

WARNING POSITION:
041200Z — NEAR 15.4N 68.9E
MOVEMENT PAST SIX HOURS – 020 DEGREES AT 06 KTS
POSITION ACCURATE TO WITHIN 025 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS – 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS – 035 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS – 065 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 125 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
085 NM SOUTHWEST QUADRANT
105 NM NORTHWEST QUADRANT
REPEAT POSIT: 15.4N 68.9E

FORECASTS:
12 HRS, VALID AT:
050000Z — 16.8N 69.8E
MAX SUSTAINED WINDS – 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS – 020 NM NORTHEAST QUADRANT
005 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 120 NM NORTHEAST QUADRANT
115 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 11 KTS

24 HRS, VALID AT:
051200Z — 18.7N 70.9E
MAX SUSTAINED WINDS – 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS – 065 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 015 DEG/ 11 KTS

36 HRS, VALID AT:
060000Z — 20.9N 71.6E
MAX SUSTAINED WINDS – 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS – 055 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 010 DEG/ 08 KTS

EXTENDED OUTLOOK:
48 HRS, VALID AT:
061200Z — 22.5N 71.9E
MAX SUSTAINED WINDS – 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND

REMARKS:
041500Z POSITION NEAR 15.7N 69.1E.
TROPICAL CYCLONE 03B (OCKHI), LOCATED APPROXIMATELY 1367 NM NORTH
OF DIEGO GARCIA, HAS TRACKED NORTH-NORTHEASTWARD AT 06 KNOTS OVER
THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS
FLARING CENTRAL CONVECTION BEING SHEARED TO THE NORTHEAST INTO THE
LEADING EDGE OF AN APPROACHING TROUGH FROM THE WEST. THERE IS HIGH
CONFIDENCE IN THE INITIAL POSITION WHICH IS BASED ON BOTH 37 AND 91
GHZ SSMIS IMAGES FROM 041122Z, SHOWING THE MICROWAVE EYE FEATURE
STRUGGLING TO KEEP TOGETHER WITH DEEP CONVECTION PRIMARILY CONFINED
TO THE WESTERN SEMICIRCLE AND DISPLACED NORTHEASTWARD. THE INITIAL
INTENSITY IS ASSESSED AT 65 KNOTS WHICH IS ON CURRENT INTENSITY
DVORAK ESTIMATES OF T4.0 (65 KNOTS) FROM DEMS AND PGTW, COMBINED
WITH A 041052Z SATCON ESTIMATE OF 67 KNOTS. UPPER-LEVEL ANALYSIS
SHOWS THE POINT SOURCE ALOFT STARTING TO BREAK DOWN AS THE ADVANCING
TROUGH INTERACTS WITH THE SYSTEM, AND VERTICAL WIND SHEAR HAS BEEN
STEADILY INCREASING OVER THE LAST SIX HOURS AS A RESULT. A DEEP-
LAYERED SUBTROPICAL RIDGE TO THE EAST IS STEERING TC 03B ON A COURSE
NORTHWESTWARD AND THIS TRACK WILL CONTINUE FOR THE REMAINDER OF THE
FORECAST PERIOD. INTERACTION WITH THE APPROACHING TROUGH WILL
CONTINUE TO INCREASE WIND SHEAR OVER THE NEXT 48 HOURS, AND IN
COMBINATION WITH DRY AIR ENTRAINMENT, WILL SEVERELY WEAKEN TC
03B WHILE OVER OPEN WATER. TC 03B IS EXPECTED TO DISSIPATE BELOW
TROPICAL CYCLONE STRENGTH JUST AFTER TAU 36, WITH THE REMNANT LOW
MAKING LANDFALL NEAR THE GULF OF KHAMBHAT AROUND TAU 48. DYNAMIC
MODEL GUIDANCE SHOWS GOOD AGREEMENT AS THE SYSTEM WEAKENS WITH ONLY
MINOR VARIATIONS IN THE EXACT LANDFALL LOCATION. OVERALL THERE IS
HIGH CONFIDENCE IN THE FORECAST TRACK. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 041200Z IS 20 FEET. NEXT WARNINGS AT 042100Z, 050300Z,
050900Z AND 051500Z.//
NNNN

METEOSAT Imagery

rb0-fcst

TROPICAL STORM RISK (TSR)

N Indian Ocean: Storm Alert issued at 4 Dec, 2017 12:00 GMT

Severe Cyclonic Storm OCKHI is currently located near 15.4 N 68.9 E with maximum 1-min sustained winds of 65 kts (75 mph). OCKHI is a category 1 storm on the Saffir Simpson Hurricane Wind Scale. OCKHI is forecast to affect land to the following likelihood(s) at the given lead time(s):

Green Alert Country(s) or Province(s)
    India
        probability for TS is 35% in about 36 hours
Green Alert City(s) and Town(s)
    Diu (20.7 N, 71.1 E)
        probability for TS is 35% in about 36 hours

Note that
Green Alert (Low) is TS to between 31% and 50% probability.
TS means Tropical Storm strength winds of at least 39 mph, 63 km/h or 34 knots 1-min sustained.

For graphical forecast information and further details please visit http://www.tropicalstormrisk.com/

201703b1

201703b_01

WEATHER UNDERGROUND

TC OCKHI WUND

(Above image: @wunderground)

OTHER

Cyclone Ockhi, which claimed 13 lives in Tamil Nadu and Kerala, has now moved beyond Lakshadweep, the weather department said bringing huge relief to the people of the rain-battered states.

However, many fishermen are still missing and warships have been deployed to comb the southeastern coast for fishing boats missing in wild seas.

Ockhi is now expected to travel north towards Mumbai and Gujarat in the next 48 hours, according to Indian Meteorological Department (IMD) Director S Sudevan in Thiruvananthapuram, though it is likely to lose intensity, reported news agency Reuters.

As many as 531 fishermen, stranded in the choppy waters off the Kerala and the Lakshadweep coasts due to Cyclone Ockhi, have been rescued, Kerala Chief Minister Pinarayi Vijayan said today. So far 393 people from Kerala have been rescued, Mr Vijayan said, as the state government announced a compensation of Rs. 10 lakh to the family of those who died in the storm.

Rescue operations are still on with Navy, Air Force and Coast Guard’s coordinated efforts in Thiruvananthapuram-Kollam coastal area. In Tamil Nadu, 60 fishermen are still missing and the Navy has been called in for their rescue
The Tamil Nadu government has also requested the centre to deploy helicopters of the Navy and the Coast Guard for the search and rescue efforts.” – NDTV (Reported by Sneha Mary Koshy, Edited by Soumyajit Majumder | Updated: December 02, 2017 20:26 IST)

FULL STORY

https://www.ndtv.com/tamil-nadu-news/as-cyclone-ockhi-wanes-kanyakumari-remains-in-knee-deep-water-powerless-1782641

MARITIME/SHIPPING

3Dasiasec_ir1 imd 04

METAREA8N / HIGH_SEAS_WARNING / 041800

WTIN01 DEMS 041800

GMDSS BULLETIN FOR MET. AREA VIII (N), NORTH OF EQUATOR
VALID FOR 24/48 HOURS FROM 04/1800 UTC 04 DECEMBER 2017.

PART-I
THE SEVERE CYCLONIC STORM OCKHI OVER EASTCENTRAL ARABIAN
SEA MOVED FURTHER NORTHNORTHEASTWARDS WITH A SPEED OF 19 KMPH
DURING PAST 6 HOURS AND LAY CENTRED AT 2030 HRS IST OF 04 TH
DECEMBER, 2017 OVER EASTCENTRAL ARABIAN SEA NEAR LATITUDE
16.1º N AND LONGITUDE 69.5º E, ABOUT 660 KM SOUTH-SOUTHWEST
OF SURAT AND 470 KM SOUTHWEST OF MUMBAI. IT IS VERY LIKELY
TO CONTINUE TO MOVE NORTH-NORTHEASTWARDS, WEAKEN GRADUALLY
AND CROSS SOUTH GUJARAT AND ADJOINING NORTH MAHARASHTRA
COASTS NEAR SURAT AS A DEEP DEPRESSION BY THE NIGHT OF
TOMORROW, THE 5 TH DECEMBER 2017. (.)
PART:-II
THE WELL MARKED LOW PRESSURE AREA OVER SOUTHEAST BAY OF
BENGAL AND ADJOINING SOUTH ANDAMAN SEA AND EQUATORIAL INDIAN
OCEAN WITH ASSOCIATED CYCLONIC CIRCULATION EXTENDING UPTO 5.8 KM
ABOVE MEAN SEA LEVEL PERSISTS. IT IS VERY LIKELY TO BECOME A
DEPRESSION OVER SOUTHEAST BAY OF BENGAL AND NEIGHBOURHOOD
DURING NEXT 24 HOURS AND DEEP DEPRESSION DURING THE SUBSEQUENT
48 HOURS. IT IS VERY LIKELY TO MOVE TOWARDS NORTH TAMILNADU¬SOUTH
ANDHRA PRADESH COASTS DURING NEXT 3 DAYS (.)
THE CYCLONIC CIRCULATION OVER SOUTHWEST BAY OF BENGAL OFF
TAMILNADU¬SRI LANKA COASTS EXTENDING UPTO 3.1 KM ABOVE MEAN SEA
LEVEL PERSISTS (.)
A1-FORECAST FOR 24 HOURS
I)WINDSPEED AND DIRECTION:-1)W OF 75 DEG E TO N OF 5 DEG N:N/NW-
LY 10/20 KTS BEC W/SW-LY 15/25 KTS TO THE E OF 70 DEG E(.)
2)REST AREA: N/NW-LY 10/20 KTS (.)
II)WEATHER:-1)E OF 63 DEG E FAIRLY WIDESPREAD RA/TS(.)
2)REST AREA :ISOLATED RA/TS(.)
III)VISIBILITY:-1)E OF 63 DEG E 4-3 NM(.)
2)REST AREA :8-6 NM(.)
IV)WAVE HEIGHT:1-4 MTR(.)
A1-FORECAST FOR 48 HOURS
I)WINDSPEED AND DIRECTION:-1)W OF 55 DEG E:NE/N-LY 10/20 KTS (.)
2)E OF 55 DEG E N/NW-LY 10/15 KTS BEC NW-LY 05/15 KTS TO THE
E OF 70 DEG E (.)
II)WEATHER:-1)E OF 66 DEG E:SCATTERED RA/TS(.)
2)REST AREA ISOLATED RA/TS(.)
III)VISIBILITY:-1)E OF 66 DEG E:6-4 NM(.)
2)REST AREA 8-6 NM(.)
IV)WAVE HEIGHT:-0.5-3 MTR(.)
A2-FORECAST FOR 24 HOURS
I)WINDSPEED AND DIRECTION:N/NW-LY 10/25 KTS BEC CYCLONIC 60/70
KTS TO THE E OF 65 DEG E AND S OF 22 DEG N(.)
II)WEATHER:1)E OF 66 DEG E TO S OF 22 DEG N :WIDESPREAD RA/TS(.)
2)REST AREA :ISOLATED RA/TS(.)
III)VISIBILITY:-1)E OF 66 DEG E TO S OF 22 DEG N :3-2 NM (.)
2)REST AREA 8-6 NM(.)
IV)WAVE HEIGHT:-1)E OF 65 DEG E:12-15 MTR(.)
2)REST AREA: 2-5 MTR(.)
A2-FORECAST FOR 48 HOURS
I)WINDSPEED AND DIRECTION:-1)W OF 65 DEG E N/NE-LY 20/25 KTS (.)
2)E OF 65 DEG E:CYCLONIC 30/35 KTS(.)
II)WEATHER:-1)E OF 66 DEG E TO S OF 22 DEG N:WIDESPREAD RA/TS(.)
2)REST AREA: ISOLATED RA/TS(.)
III)VISIBILITY:-1)E OF 66 DEG E TO S OF 22 DEG N:3-2 NM(.)
2)REST AREA: 8-6 NM (.)
IV)WAVE HEIGHT:-1)E OF 65 DEG E 5-6 MTR(.)
2)REST AREA: 3-4 MTR (.)
BOB A3-BAY OF BENGAL:EQUATOR TO 10 DEG N BETWEEN E OF 80 DEG
E AND WEST OF 10 DEG N/98 DEG 30 MIN E TO 6 DEG N/95 DEG
E AND THENCE S-WARDS TO EQUATOR(.)
A3-FORECAST FOR 24 HOURS
I)WINDSPEED AND DIRECTION: CYCLONIC 20/30 KTS(.)
II)WEATHER: WIDESPREAD RA/TS (.)
III)VISIBILITY: 3-2 NM (.)
IV)WAVE HEIGHT :3-4 MTR(.)
A3-FORECAST FOR 48 HOURS
I)WINDSPEED AND DIRECTION: CYCLONIC 25/30 KTS(.)
II)WEATHER:-WIDESPREAD RA/TS (.)
III)VISIBILITY:-3-2 NM (.)
IV)WAVE HEIGHT:-4-5 MTR(.)
BOB: A4: BAY OF BENGAL N OF 10 DEG N AND E OF 80 DEG E (.)
A4-FORECAST FOR 24 HOURS
I)WINDSPEED AND DIRECTION: N/NE-LY 05/15 KTS BEC E/NE-LY 10/25
KTS TO THE S OF 18 DEG N(.)
II)WEATHER:-1)S OF 15 DEG N WIDESPREAD RA/TS(.)
2)REST AREA :FAIR(.)
III)VISIBILITY: 1)S OF 15 DEG N 3-2 NM(.)
2)REST AREA :10-8 NM(.)
IV)WAVE HEIGHT:0.5-4 MTR (.)
A4-FORECAST FOR 48 HOURS
I)WINDSPEED AND DIRECTION:1)NE-LY 10/20 KTS BEC E/NE-LY 15/25
KTS TO THE S OF 15 DEG N (.)
II)WEATHER:1)S OF 16 DEG N :WIDESPREAD RA/TS(.)
2)REST AREA FAIR (.)
III)VISIBILITY: 1)S OF 16 DEG N :3-2 NM(.)
2)REST AREA: 10-8 NM(.)
IV)WAVE HEIGHT:-1-4 MTR(.)

ISSUED BY INDIA METEOROLOGICAL DEPARTMENT

=============================================================================

Do not use any information on this site for life or death decisions. All information is intended as supplementary to official sources. Kindly refer to your country’s official weather agency/government website for local warnings, advisories and bulletins.

 

Indonesia/ Australia: Tropical Cyclone Dahlia 01S 01/1800Z nr 10.8S 110.1E, slow moving (TCWC Perth) – Updated 01 Dec 2017 1935z (GMT/UTC)

Tropical Cyclone Dahlia 01S

MAXIMUM SIGNIFICANT WAVE HEIGHT AT 011200Z IS 18 FEET – JTWC

AUSTRALIAN GOVERNMENT BUREAU OF METEOROLOGY
TROPICAL CYCLONE WARNING CENTRE PERTH

TROPICAL CYCLONE FORECAST TRACK MAP

Tropical Cyclone Dahlia

Issued at 2:35 am AWST Saturday 2 December 2017. No Tropical Cyclone Advice is current for this system.

IDW60284 D AUS

 

Community Threat

Warning Zone
Gales within 24 hours
example of orange colour
Watch Zone
Gales from 24-48 hours
example of yellow colour

Past Cyclone Details

Past Location and Intensity Number
example of icon
Past Track and Movement
example of track

Current Cyclone Details

Current Location and Intensity Number
example of icon
Very Destructive Winds
example of region
Destructive Winds
example of region
Gale Force Winds
example of region

Forecast Cyclone Details
(Up to 72 hours from time of issue)

Forecast Location and Intensity Number
example of icon
Very Destructive Wind Boundary
example of region
Destructive Wind Boundary
example of region
Gale Force Wind Boundary
example of region
Most Likely Future Track
example of track
Range of Likely Tracks of Cyclone Centre
example of region

The forecast path shown above is the Bureau’s best estimate of the cyclone’s future movement and intensity. There is always some uncertainty associated with tropical cyclone forecasting and the grey zone indicates the range of likely tracks of the cyclone centre.

Due to the uncertainty in the future movement, the indicated winds will almost certainly extend to regions outside the rings on this map. The extent of the warning and watch zones reflects this.

This product is designed for land-based communities; mariners should read the coastal waters and high seas warnings.

Headline:

Tropical Cyclone Dahlia continues to develop over open waters well east of Christmas Island.

Areas affected:

Warning zone: None.

Watch zone: None.

Cancelled zones: None.

Details of Tropical Cyclone Dahlia at 2:00 am AWST:

Intensity: category 2, sustained winds near the centre of 95 kilometres per hour with wind gusts to 130 kilometres per hour.
Location: within 85 kilometres of 10.8 degrees South, 110.1 degrees East , 485 kilometres east of Christmas Island and 1310 kilometres north northwest of Exmouth .
Movement: slow moving .

Hazards:

Tropical Cyclone Dahlia is located over open waters well east of Christmas Island. The cyclone is forecast to move to the south over the weekend and may intensify further, however it is then expected to weaken on Monday well off the northwest WA coast. The cyclone is expected to remain over open waters and is unlikely to directly impact the WA coast before weakening below cyclone intensity.

Details:

Time (AWST) Intensity Category Latitude
(decimal deg.)
Longitude
(decimal deg.)
Estimated Position
Accuracy (km)
0hr 2 am December 2 2 10.8S 110.1E 85
+6hr 8 am December 2 3 11.3S 110.1E 80
+12hr 2 pm December 2 3 11.8S 110.0E 100
+18hr 8 pm December 2 3 12.2S 109.9E 125
+24hr 2 am December 3 3 12.8S 109.8E 145
+36hr 2 pm December 3 2 14.3S 109.6E 185
+48hr 2 am December 4 1 16.0S 109.4E 220
+60hr 2 pm December 4 1 17.7S 109.4E 255
+72hr 2 am December 5 1 18.9S 110.1E 290

Tropical Cyclone information is also available in MetEye

Next Issue

The next Forecast Track Map will be issued by 9:00 am AWST Saturday

IDW24010
Australian Government Bureau of Meteorology
Western Australia

TROPICAL CYCLONE INFORMATION BULLETIN
Issued at 2:37 am WST on Saturday 2 December 2017
BY THE BUREAU OF METEOROLOGY
TROPICAL CYCLONE WARNING CENTRE PERTH

Tropical Cyclone Dahlia (Category 2) was located at 2:00 am AWST near 10.8S
110.1E, that is 485 km east of Christmas Island and slow moving.
Tropical Cyclone Dahlia is located over open waters well east of Christmas
Island. The cyclone is forecast to move to the south over the weekend and may
intensify further, however it is then expected to weaken on Monday well off the
northwest WA coast. The cyclone is expected to remain over open waters and is
unlikely to directly impact the WA coast before weakening below cyclone
intensity.

The next Information Bulletin will be issued at 9:00 am AWST.

Joint Typhoon Warning Center (JTWC)

Tropical Cyclone 01S (Dahlia) Warning #07
Issued at 01/1500Z  

sh0118

01s_011200sair

Google Earth Overlay
WTXS31 PGTW 011500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL CYCLONE 01S (DAHLIA) WARNING NR 007
01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY

WARNING POSITION:
011200Z — NEAR 10.5S 110.5E
MOVEMENT PAST SIX HOURS – 110 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 040 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS – 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS – 050 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 100 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
095 NM NORTHWEST QUADRANT
REPEAT POSIT: 10.5S 110.5E

FORECASTS:
12 HRS, VALID AT:
020000Z — 11.3S 110.8E
MAX SUSTAINED WINDS – 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS – 035 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 095 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
075 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 190 DEG/ 04 KTS

24 HRS, VALID AT:
021200Z — 12.0S 110.7E
MAX SUSTAINED WINDS – 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS – 035 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 200 DEG/ 06 KTS

36 HRS, VALID AT:
030000Z — 13.2S 110.3E
MAX SUSTAINED WINDS – 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS – 015 NM NORTHEAST QUADRANT
005 NM SOUTHEAST QUADRANT
005 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS – 035 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 075 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 190 DEG/ 09 KTS

EXTENDED OUTLOOK:
48 HRS, VALID AT:
031200Z — 15.0S 110.0E
MAX SUSTAINED WINDS – 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS – 020 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
015 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS – 040 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 065 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 165 DEG/ 08 KTS

72 HRS, VALID AT:
041200Z — 18.2S 110.8E
MAX SUSTAINED WINDS – 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS – 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS – 070 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 145 DEG/ 06 KTS

LONG RANGE OUTLOOK:

96 HRS, VALID AT:
051200Z — 20.3S 112.4E
MAX SUSTAINED WINDS – 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS – 040 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 110 DEG/ 06 KTS

120 HRS, VALID AT:
061200Z — 21.0S 114.8E
MAX SUSTAINED WINDS – 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER

REMARKS:
011500Z POSITION NEAR 10.7S 110.6E.
TROPICAL CYCLONE 01S (DAHLIA), LOCATED APPROXIMATELY 738 NM
NORTH-NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED EAST-
SOUTHEASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED
SATELLITE IMAGERY DEPICTS FLARING CONVECTION ASSOCIATED WITH THE LOW
LEVEL CIRCULATION CENTER (LLCC). THE INITIAL POSITION WAS PLACED WITH
GOOD CONFIDENCE BASED ON A 011119Z SSMIS MICROWAVE IMAGE. THE INITIAL
INTENSITY IS 50 KNOTS BASED ON DVORAK ESTIMATES OF T4.0 (65
KNOTS)FROM KNES AND T3.0 (45 KNOTS) FROM PGTW AND A SATCON ESTIMATE
OF 45 KNOTS. VERTICAL WIND SHEAR IS MODERATE (15 TO 20 KNOTS) AND
BOTH POLEWARD AND EQUATORWARD OUTFLOW REMAIN GOOD. SEA SURFACE
TEMPERATURES ARE FAVORABLE FOR DEVELOPMENT IN THE SHORT TERM (28 TO
29 DEGREES CELSIUS) BUT WILL BECOME UNFAVORABLE (25 DEGREES CELSIUS)
AFTER TAU 72. TC 01S WILL TRACK SOUTHWARD ALONG THE WESTERN PERIPHERY
OF THE SUBTROPICAL RIDGE LOCATED OVER NORTHWEST AUSTRALIA. NUMERICAL
MODEL GUIDANCE HAS SHOWN SOME DISAGREEMENT IN THE TIMING OF THE
SOUTHWARD TURN. HOWEVER, THERE IS STILL HIGH CONFIDENCE IN THE JTWC
FORECAST TRACK. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 011200Z IS 18
FEET. NEXT WARNINGS AT 012100, 020300Z, 020900, AND 021500Z.//
NNNN

HIMAWARI Imagery

TROPICAL STORM RISK (TSR)

S Indian Ocean: Storm Alert issued at 1 Dec, 2017 0:00 GMT

Tropical Storm DAHLIA is currently located near 9.7 S 109.0 E with maximum 1-min sustained winds of 50kts (58 mph). DAHLIA is forecast to affect land to the following likelihood(s) at the given lead time(s):

Green Alert Country(s) or Province(s)
    Indonesia
        probability for TS is 45% currently
Green Alert City(s) and Town(s)
    Cilacap (7.7 S, 109.0 E)
        probability for TS is 45% currently

Note that
Green Alert (Low) is TS to between 31% and 50% probability.
TS means Tropical Storm strength winds of at least 39 mph, 63 km/h or 34 knots 1-min sustained.

For graphical forecast information and further details please visit http://www.tropicalstormrisk.com/

201701s

201701s_0

MARITIME/SHIPPING

METAREA10 / TROPICAL_CYCLONE_WARNING_PERTH / 1803 

WTAU06 APRF 011803
CENTRAL PRESSURE 975 HPA.
WINDS TO 70 KNOTS.

REMARKS
ALL SHIPS IN THE AREA PLEASE SEND WEATHER REPORTS EVERY THREE HOURS.
REGULAR WEATHER OBSERVING SHIPS USE NORMAL CHANNELS.
OTHER SHIPS PLEASE USE EITHER EMAIL TO TCWCWA?BOM.GOV.AU OR FAX TO
+61892632261
OR SATELLITE USING SAC1241 THROUGH LAND EARTH STATION BURUM 312 (OR
212 AS
APPROPRIATE) VIA PERTH.

NEXT WARNING WILL BE ISSUED BY 0100 UTC 02 DECEMBER 2017.

WEATHER PERTH

//END PART 02/02//

METAREA10 / HIGH_SEAS_FORECAST_NORTHERN / 1803

IDW23200
40:3:2:24:11S110E999:11:00
PAN PAN

HIGH SEAS WEATHER WARNING FOR METAREA 10 ISSUED BY THE
AUSTRALIAN BUREAU OF METEOROLOGY TROPICAL CYCLONE WARNING CENTRE PERTH
AT 1803UTC 1 DECEMBER 2017

HURRICANE FORCE WIND WARNING

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

SITUATION
At 1800 UTC Tropical Cyclone Dahlia was centred within 45 nautical miles of
latitude ten decimal eight south (10.8S)
longitude one hundred and ten decimal one east (110.1E)
Recent movement : slow moving
Maximum winds : 50 knots
Central pressure: 985 hPa

AREA AFFECTED
Within 90 nautical miles in NE quadrant
and within 60 nautical miles in SE quadrant
and within 60 nautical miles in SW quadrant
and within 90 nautical miles in NW quadrant.

FORECAST
Maximum winds to 50 knots near the centre increasing to 70 knots by 1800 UTC 02
December.

Winds above 64 knots within 20 nautical miles of centre after 0000 UTC 02
December, with very high seas.

Winds above 48 knots within 30 nautical miles of centre with high seas.

Winds above 34 knots within 90 nautical miles in NE quadrant
and within 60 nautical miles in SE quadrant
and within 60 nautical miles in SW quadrant
and within 90 nautical miles in NW quadrant with very rough seas and heavy
swell.

 

Forecast positions
At 0600 UTC 02 December: Within 55 nautical miles of 11.8 south 110.0 east
Central pressure 980 hPa.
Winds to 65 knots.
At 1800 UTC 02 December: Within 80 nautical miles of 12.8 south 109.8 east
Central pressure 975 hPa.
Winds to 70 knots.

REMARKS
All ships in the area please send weather reports every three hours.
Regular weather observing ships use normal channels.
Other ships please use either email to tcwcwa@bom.gov.au or fax to +61892632261
or satellite using SAC1241 through Land Earth Station Burum 312 [or 212 as
appropriate] via Perth.

Next warning will be issued by 0100 UTC 02 December 2017.

WEATHER PERTH

 

=============================================================================

Do not use any information on this site for life or death decisions. All information is intended as supplementary to official sources. Kindly refer to your country’s official weather agency/government website for local warnings, advisories and bulletins.