Australia: Tropical Cyclone (now Extratropical) 23P ITA 140900Z nr 24.0S 155.9E, moving ESE at 23 knots (JTWC) – Updated 140414 1620z

TROPICAL CYCLONE 23P (ITA) (JTWC)

Ex-TC Ita (BoM)

(Image: wunderground.com) 5 day forecast (Click image for source)

(Image: wunderground.com) 5 day forecast (Click image for source)

 

Australian Government - Bureau of Meteorology

Map of Australian region showing the location of any current active tropical cyclones

IDQ20018
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA – EASTERN REGION
Issued by BRISBANE TROPICAL CYCLONE WARNING CENTRE
at: 0726 UTC 14/04/2014
Name: Ex-Tropical Cyclone Ita
Identifier: 15U
Data At: 0600 UTC
Latitude: 23.7S
Longitude: 155.1E
Location Accuracy: within 30 nm [55 km]
Movement Towards: east southeast [122 deg]
Speed of Movement: 18 knots [33 km/h]
Maximum 10-Minute Wind: 50 knots [95 km/h]
Maximum 3-Second Wind Gust: 70 knots [130 km/h]
Central Pressure: 992 hPa
Radius of 34-knot winds NE quadrant: 140 nm [260 km]
Radius of 34-knot winds SE quadrant: 100 nm [185 km]
Radius of 34-knot winds SW quadrant: 100 nm [185 km]
Radius of 34-knot winds NW quadrant: 100 nm [185 km]
Radius of 48-knot winds NE quadrant: 50 nm [95 km]
Radius of 48-knot winds SE quadrant: 20 nm [35 km]
Radius of 48-knot winds SW quadrant: 50 nm [95 km]
Radius of 48-knot winds NW quadrant: 0 nm [0 km]
Radius of 64-knot winds:
Radius of Maximum Winds: 25 nm [45 km]
Dvorak Intensity Code: N/A
Pressure of outermost isobar: 1006 hPa
Radius of outermost closed isobar: 150 nm [280 km]
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+06: 14/1200: 24.3S 156.6E: 040 [080]: 050 [095]: 992
+12: 14/1800: 24.7S 157.6E: 055 [100]: 050 [095]: 992
+18: 15/0000: 25.3S 158.6E: 065 [125]: 045 [085]: 995
+24: 15/0600: 25.9S 159.9E: 080 [145]: 045 [085]: 995
+36: 15/1800: 27.6S 162.6E: 100 [185]: 040 [075]: 993
+48: 16/0600: 30.9S 166.8E: 120 [220]: 035 [065]: 996
+60: 16/1800: 36.0S 170.2E: 140 [255]: 035 [065]: 994
+72: 17/0600: 38.2S 170.3E: 155 [290]: 035 [065]: 990
+96: 18/0600: : : :
+120: 19/0600: : : :
REMARKS:
Analysis of the cloud system and ASCAT data suggests that the system has
completed its transition to a vigorous extra-tropical low. Movement will
continue to be rapidly ESE due to NW’ly steering from a strong upper trough over
eastern Australia. Deep layer wind shear over the system is estimated to be 30 –
40 knots.

Surface observations from Cato Island indicate that the system has intensified
during the extra-tropical transition, with maximum sustained winds pushed up to
50 knots. Dvorak analysis no longer relevant. Confidence in the LLCC position is
fair, using visible satelite imagery and surface automatic weather station
observations.
Copyright Commonwealth of Australia
==

No further technical bulletins are expected to be issued for this system.

Joint Typhoon Warning Center (JTWC)

https://i2.wp.com/www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/sh2314.gif

 

https://i2.wp.com/www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/satshots/23P_140532sams.jpg

 

 

WTPS31 PGTW 140900

MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 23P (ITA) WARNING NR 020//
RMKS/
1. TROPICAL CYCLONE 23P (ITA) WARNING NR 020
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY

WARNING POSITION:
140600Z — NEAR 23.7S 155.1E
MOVEMENT PAST SIX HOURS – 120 DEGREES AT 23 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS – 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 034 KT WINDS – 075 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
REPEAT POSIT: 23.7S 155.1E

FORECASTS:
12 HRS, VALID AT:
141800Z — 25.0S 158.2E
MAX SUSTAINED WINDS – 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL

REMARKS:
140900Z POSITION NEAR 24.0S 155.9E.
TROPICAL CYCLONE (TC) 23P (ITA), LOCATED APPROXIMATELY 260 NM NORTH-
NORTHEAST OF BRISBANE, AUSTRALIA, HAS TRACKED EAST-SOUTHEASTWARD AT
23 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY (MSI) REVEALS TC 23P HAS STARTED TO RAPIDLY UNDERGO EXTRA-
TROPICAL TRANSITION (ETT) AS IT BECOMES FURTHER EMBEDDED IN THE MID-
LATITUDE WESTERLIES. THE LOW LEVEL CIRCULATION CENTER HAS STARTED TO
ELONGATE WHILE THE DEEP CONVECTION HAS BECOME SHEARED TO THE
SOUTHEAST AS THE SYSTEM HAS STARTED TO TAKE ON FRONTAL
CHARACTERISTICS. THE LATEST AMSU CROSS SECTION ADDITIONALLY SHOWS A
DEVELOPING WARM CORE ANOMALY IN THE LOWER LEVELS, INDICATIVE OF A
DEVELOPING WARM FRONT, WHILE THE UPPER-LEVEL WARM CORE ANOMALY HAS
DISSIPATED. AS TC ITA CONTINUES SOUTHEAST, THE VERTICAL WIND SHEAR
FROM THE WESTERLIES WILL CONTINUE TO FURTHER ACCELERATE THE ETT
PROCESS, TRANSITIONING THE SYSTEM INTO A GALE FORCE LOW WITHIN THE
NEXT 12 HOURS. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT
TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED
FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 140600Z
IS 12 FEET.//
NNNN

Other Reports

2 adults & 3 children rescued from flood waters 10km S of Cooktown

http://www.sbs.com.au/news/article/2014/04/12/water-rescue-underway-after-ita-newman

MARITIME

WOAU01 AMMC 141222
40:2:1:04:55S075E35060:11:00
IDY21000
SECURITE
HIGH SEAS WEATHER WARNING FOR METAREA 10
Issued by the Bureau of Meteorology National Meteorological and Oceanographic
Centre
AT 1222UTC 14 APRIL 2014
GALE WARNING FOR WESTERN AREA.

PLEASE BE AWARE

Wind gusts can be 40 percent stronger than the averages given here, and maximum
waves may be up to twice the height.

Situation
Vigorous westerly quarter flow.

Area Affected
Bounded by 44S080E 41S110E 41S116E 43S116E 46S112E 50S111E 50S080E 44S080E.

Forecast
W quarter winds 30/40 knots initially west of 090E, extending to west of 096E by
141800UTC, west of 103E by 150001UTC, west of 110E by 150600UTC and throughout
area by 151200UTC. Wind speeds increasing to 35/45 knots south of 47S after
141800UTC. Rough to very rough seas. Moderate to heavy swell.

WEATHER MELBOURNE

WOAU06 AMMC 141232
40:2:1:04:55S075E35095:11:00
IDY21050
SECURITE
HIGH SEAS WEATHER WARNING FOR METAREA 10
Issued by the Bureau of Meteorology National Meteorological and Oceanographic
Centre
AT 1232UTC 14 APRIL 2014
STORM FORCE WIND WARNING FOR WESTERN AND SOUTHEASTERN AREAS.

PLEASE BE AWARE
Wind gusts can be 40 percent stronger than the averages given here, and maximum
waves may be up to twice the height.

Situation
Area A: Vigorous flow associated with a low 986hPa near 46S103E at 141200UTC.
Low forecast 976hPa near 46S107E at 141800UTC, 976hPa near 46S113E at 150001UTC,
976hPa near 47S118E at 150600UTC and 975hPa near 49S123E at 151200UTC.

Area B: Vigorous northerly flow developing associated with a cold front forecast
near 42S126E 45S129E 50S127E at 150900UTC and 42S129E 45S131E 50S129E at
151200UTC.

Area Affected
Area A: Bounded by 50S100E 44S094E 40S095E 37S103E 40S118E 46S128E 50S128E
50S100E.

Area B: Bounded by 50S127E 45S129E 45S133E 50S133E 50S127E.

Forecast
Area A: Clockwise winds 30/40 knots within 480nm of low in sector from south
through northwest to east, decreasing to within 360nm of low by 151200UTC. Winds
increasing to 40/50 knots within 240nm of low in northern semicircle. Winds
further increasing to 45/55 knots within 180nm in northern quadrant of low
between 142100UTC and 150300UTC.

Area B: N quarter winds 30/40 knots within 180nm east of cold front developing
by 150900UTC. Winds decreasing below 34 knots west of cold front.

Rough to very rough seas rising to high in storm force wind area. Moderate to
heavy swell.

WEATHER MELBOURNE

METAREA X

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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