Korea/ China: Severe Tropical Storm Chan-Hom (09W) 12/1500Z POSITION nr 37.5N 125.1E, moving N/NNE 20 knots (JTWC) – Updated 120715 1500z (GMT/UTC)

Severe Tropical Storm Chan-Hom (09W)

MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 121200Z IS 20 FEET. (JTWC)

(Image: wunderground.com) 5 day forecast

(Image: wunderground.com) 5 day forecast

(Image: wunderground.com) Satellite

(Image: wunderground.com) Satellite

Japan Meteorological agency

1509-00 c12

Tropical cyclones do not necessarily move along the lines
connecting the centers of probability circles.

Unit:
1KT(knot) = 1.852 km/h = 0.5144 m/s
1NM(nautical mile) = 1.852 km

15071215 c12

STS 1509 (CHAN-HOM)
Issued at 12:45 UTC, 12 July 2015

<Analyses at 12/12 UTC>
Scale
Intensity
Center position N36°35′(36.6°)
E125°00′(125.0°)
Direction and speed of movement NNE 35km/h(18kt)
Central pressure 980hPa
Maximum sustained wind speed 25m/s(50kt)
Maximum wind gust speed 35m/s(70kt)
Area of 30kt winds or more E600km(325NM)
W390km(210NM)
<Forecast for 13/00 UTC>
Intensity
Center position of probability circle N39°40′(39.7°)
E127°00′(127.0°)
Direction and speed of movement NNE 30km/h(17kt)
Central pressure 985hPa
Maximum sustained wind speed 23m/s(45kt)
Maximum wind gust speed 35m/s(65kt)
Radius of probability circle 90km(50NM)
<Forecast for 13/12 UTC>
Intensity
LOW
Center position of probability circle N42°10′(42.2°)
E130°30′(130.5°)
Direction and speed of movement NE 35km/h(18kt)
Central pressure 992hPa
Maximum sustained wind speed 18m/s(35kt)
Maximum wind gust speed 25m/s(50kt)
Radius of probability circle 160km(85NM)

Joint Typhoon Warning Center (JTWC)

Tropical Storm 09W (Chan-hom) Warning #49
Issued at 12/1500Z

wp0915 c12

3 Hour Position Update Graphic <>Valid 11/2100Z

3 Hour Position Update Graphic <>Valid 11/2100Z

09W_112332sams c12

WTPN31 PGTW 121500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 09W (CHAN-HOM) WARNING NR 049
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY

WARNING POSITION:
121200Z — NEAR 36.8N 124.7E
MOVEMENT PAST SIX HOURS – 015 DEGREES AT 20 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS – 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS – 150 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
115 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
REPEAT POSIT: 36.8N 124.7E

FORECASTS:
12 HRS, VALID AT:
130000Z — 39.6N 126.3E
MAX SUSTAINED WINDS – 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 050 DEG/ 10 KTS

24 HRS, VALID AT:
131200Z — 40.9N 128.3E
MAX SUSTAINED WINDS – 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND

REMARKS:
121500Z POSITION NEAR 37.5N 125.1E.
TROPICAL STORM 09W (CHAN-HOM), LOCATED APPROXIMATELY 100 NM WEST-
SOUTHWEST OF INCHON, SOUTH KOREA, HAS TRACKED NORTH-NORTHEASTWARD
AT 20 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 121200Z IS 20 FEET. NEXT WARNINGS AT 122100Z, 130300Z AND 130900Z.
REFER TO TYPHOON 11W (NANGKA) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY
UPDATES.//
NNNN

TSR NW Pacific: Storm Alert issued at 12 Jul, 2015 12:00 GMT

Tropical Storm CHAN-HOM (09W) currently located near 36.8 N 124.7 E is forecast to strike land to the following likelihood(s) at the given lead time(s):

Yellow Alert Country(s) or Province(s)
    China
        probability for TS is 100% within 12 hours
    North Korea
        probability for TS is 100% currently
    South Korea
        probability for TS is 100% currently
Yellow Alert City(s) and Town(s)
    P’yongyang (39.0 N, 125.8 E)
        probability for TS is 100% within 12 hours
    Sariwon (38.5 N, 125.8 E)
        probability for TS is 100% within 12 hours
    Seoul (37.5 N, 126.9 E)
        probability for TS is 100% within 12 hours
    Kanggye (41.0 N, 126.6 E)
        probability for TS is 100% within 12 hours
    Hamhung (39.9 N, 127.6 E)
        probability for TS is 95% within 12 hours
    Sinuiju (40.1 N, 124.4 E)
        probability for TS is 85% within 12 hours
    Kunsan (36.0 N, 126.8 E)
        probability for TS is 70% currently
    Ch’ungju (36.6 N, 127.5 E)
        probability for TS is 55% within 12 hours

Note that
Yellow Alert (Elevated) is CAT 1 or above to between 10% and 30% probability, or TS to above 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/

201509W_0 c12

(Image: TSR)

MARITIME/ SHIPPING

seawarn c12

CLICK IMAGE FOR MORE DETAIL

WTJP21 RJTD 121200
WARNING 121200.
WARNING VALID 131200.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
SEVERE TROPICAL STORM 1509 CHAN-HOM (1509) 980 HPA
AT 36.6N 125.0E YELLOW SEA MOVING NORTHNORTHEAST 18 KNOTS.
POSITION GOOD.
MAX WINDS 50 KNOTS.
RADIUS OF OVER 30 KNOT WINDS 325 MILES EAST SEMICIRCLE AND 210 MILES
ELSEWHERE.
FORECAST POSITION FOR 130000UTC AT 39.7N 127.0E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 45 KNOTS.
FORECAST POSITION FOR 131200UTC AT 42.2N 130.5E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
992 HPA, MAX WINDS 35 KNOTS.
BECOMING EXTRATROPICAL LOW.

JAPAN METEOROLOGICAL AGENCY.=

WWJP25 RJTD 120600
WARNING AND SUMMARY 120600.
WARNING VALID 130600.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
EXPECTED EASTERLY WINDS 30 TO 60 KNOTS PREVAILING OVER WATERS BOUNDED
BY 15N 176E 15N 180E 13N 180E 13N 176E 15N 176E FOR NEXT 24 HOURS.
STORM WARNING.
EXPECTED WESTERLY WINDS 30 TO 60 KNOTS PREVAILING OVER WATERS BOUNDED
BY 13N 176E 13N 180E 11N 180E 11N 176E 13N 176E FOR NEXT 24 HOURS.
WARNING.
DENSE FOG OBSERVED LOCALLY OVER SEA OF OKHOTSK SEA OF JAPAN.
WARNING.
DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 32N 136E 33N 136E
35N 137E 36N 143E 43N 146E 56N 163E 60N 164E 60N 180E 40N 180E 36N
160E 32N 142E 32N 136E.
SUMMARY.
LOW 998 HPA AT 49N 132E ENE 10 KT.
LOW 1002 HPA AT 47N 153E SE 15 KT.
HIGH 1010 HPA AT 57N 146E ALMOST STATIONARY.
REMARKS.
TYPHOON 1511 NANGKA (1511) 950 HPA AT 18.6N 137.6E : SEE TROPICAL
CYCLONE WARNING.
SEVERE TROPICAL STORM 1509 CHAN-HOM (1509) 975 HPA AT 34.9N 124.2E :
SEE TROPICAL CYCLONE WARNING.

JAPAN METEOROLOGICAL AGENCY.=

Further warnings exist for METAREA XI http://weather.gmdss.org/XI.html

PassageWeather is a FREE sailing weather website: http://www.passageweather.com/

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.

2 thoughts on “Korea/ China: Severe Tropical Storm Chan-Hom (09W) 12/1500Z POSITION nr 37.5N 125.1E, moving N/NNE 20 knots (JTWC) – Updated 120715 1500z (GMT/UTC)

  1. China typhoon: Chan-hom hits coast of Zhejiang province – BBC News
    Powerful typhoon Chan-hom has made landfall along the coast of China’s eastern Zhejiang province.

    Almost one million people have been evacuated from coastal areas in anticipation of the typhoon carrying wind speeds of 173km/h (107mph).

    Chan-hom’s path is expected to take it south of Shanghai later on Saturday.

    More here: http://www.bbc.co.uk/news/world-asia-33491507

    Like

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