SPAC/AUS: INVEST 93P

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SPAC/AUS: INVEST 93P

#1 Postby Extratropical94 » Wed Apr 13, 2011 10:55 am

JTWC:
AN AREA OF CONVECTION HAS PERSISTED NEAR 15.2S 159.5E,
APPROXIMATELY 580 NM NORTHWEST OF NOUMEA, NEW CALEDONIA. ANIMATED
VISUAL IMAGERY SHOWS CLEAR TURNING AND CONSOLIDATION OF CONVECTION
ASSOCIATED WITH THE LOW LEVEL CIRCULATION CENTER (LLCC). THE LLCC
EXISTS ALONG A LINE OF CONVERGENCE IN THE SOUTHERN PACIFIC
CONVERGENCE ZONE. A 122140Z SSMIS IMAGE REVEALED SOME CURVED BANDING
ON THE SOUTHEAST PERIPHERY OF THE LLCC, BUT AN OVERALL LACK OF
ORGANIZATION. THE PGTW 130000Z UPPER-LEVEL STREAMLINE ANALYSIS SHOWS
AN ANTICYCLONE DIRECTLY OVER THE LLCC, AND VERTICAL WIND SHEAR OVER
THE SYSTEM IS BELOW 10 KNOTS. SATELLITE-DERIVED SEA SURFACE
TEMPERATURES IN THE REGION ARE ESTIMATED AT 28 TO 29 DEGREES
CELSIUS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1009 MB.
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS POOR.

BOM:
The monsoon trough lies over the northern Coral Sea with a weak embedded low to
the northwest of New Caledonia. The low is expected to remain weak and move
slowly south over the next three days.

Likelihood of a tropical cyclone developing in the Eastern Region on:

Thursday: Very low
Friday: Low
Saturday: Low

NRL:
15 kt, 1010 mbar, 14.7N 159.6E
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#2 Postby Grifforzer » Thu Apr 14, 2011 9:43 pm

TROPICAL CYCLONE 3 - DAY OUTLOOK
Issued By: Tropical Cyclone Centre, RSMC, Nadi

Equator to 25S and 160E to 120W
Issue Time: 0400 UTC Thursday 14 April 2011
Next Issue: 0400 UTC Friday 15 April 2011
Existing Tropical Cyclones:
Nil.

Friday, April 15th
A tropical disturbance is expected to develop west of New Caledonia. Potential for this disturbance to develop into a cyclone is low.

Saturday, April 16th
The tropical disturbance is expected to remain slow moving west of New Caledonia. Potential for this disturbance to develop into a cyclone is low

Sunday, April 17th
The tropical disturbance is expected to remain slow moving west of New Caledonia. Potential for this disturbance to develop into a cyclone is low
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#3 Postby HURAKAN » Fri Apr 15, 2011 9:16 am

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#4 Postby HURAKAN » Fri Apr 15, 2011 3:44 pm

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#5 Postby HURAKAN » Fri Apr 15, 2011 3:54 pm

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#6 Postby HURAKAN » Fri Apr 15, 2011 4:06 pm

GALE WARNING 001 ISSUED FROM RSMC NADI Apr 15/1950 UTC 2011 UTC.

IN THE AREA EAST OF 160E AND BOUNDED WITHIN 20S 160E 20S 163E 24S 160E 20S 160E,
EXPECT SOUTHEAST WINDS 20 TO 33 KNOTS OVER WATERS ONLY. WINDS POSSIBLY
INCREASING TO 30 TO 35 KNOTS IN THE NEXT 06 TO 18 HOURS.

AREA OF GALES SLOW MOVING.

THIS IS THE FIRST WARNING FOR THIS SYSTEM.
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#7 Postby HURAKAN » Fri Apr 15, 2011 5:03 pm

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#8 Postby HURAKAN » Fri Apr 15, 2011 5:22 pm

Tropical Disturbance Summary For area Equator to 25S, 160E to 120W
ISSUED FROM RSMC NADI Apr 15/2204 UTC 2011 UTC.

TROPICAL DISTURBANCE TD15F ANALYSED NEAR 22.4S 160.9E AT 152100 UTC
SLOW MOVING. POSITION FAIR BASED ON MTSAT VIS/IR WITH ANIMATION AND
SURFACE OBSERVATIONS. SST AROUND 26 DEGREES.

ORGANISATION HAS IMPROVED SLIGHTLY IN THE PAST 24 HOURS. CONVECTION
HAS SLIGHTLY INCREASED IN THE PAST 12HRS.

UPPER LEVEL CYCLONIC CIRCULATION EXTENDS UPTO 700HPA. SYSTEM LIES
UNDER AN UPPER RIDGE IN A MODERATELY SHEARED ENVIRONMENT.

GLOBAL MODELS HAVE PICKED UP THE SYSTEM AND ARE MOVING IT IN A
SOUTHEASTERLY DIRECTION WITH SLIGHT INTENSIFICATION.

POTENTIAL FOR THE DISTURBANCE TO DEVELOP IN TO A TROPICAL CYCLONE IN
THE NEXT 24 TO 48 HOURS IS MODERATE.
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#9 Postby HURAKAN » Fri Apr 15, 2011 10:04 pm

TROPICAL DISTURBANCE ADVISORY NUMBER A1 ISSUED FROM RSMC NADI
Apr 16/0202 UTC 2011 UTC.

TROPICAL DEPRESSION 15F [1000 HPA] WAS LOCATED NEAR 23.0S 160.6E AT
160000 UTC. DEPRESSION MOVING SOUTH-SOUTHEAST AT 13 KNOTS. POSITION
POOR BASED ON VIS/IR IMAGERY. MAXIMUM 10-MINUTE AVERAGE WINDS NEAR
THE CENTRE ESTIMATED AT ABOUT 30 KNOTS.

ORGANISATION AND CONVECTION HAS SLIGHTLY IMPROVED IN PAST 24 HRS.
SYSTEM LIES IN A MODERATELY SHEARED ENVIRONMENT. SST AROUND 28C.
SYSTEM STEERED SOUTH-SOUTHEAST BY NORTHWEST DEEP LAYER MEAN FLOW.
DVORAK ANALYSIS BASED 0.4 LOG10 SPIRAL YIELDING DT=2.0 MET AND PT
AGREE THUS T2.0/2.0/D0.5/24HRS. GLOBAL MODELS AGREE ON
SOUTH-SOUTHEAST WITH LITTLE INTENSIFICATION.

FORECASTS :
AT 12 HRS VALID AT 161200 UTC 25.1S 163.0E MOV SE AT 13KT WITH 30 KT
CLOSE TO CENTRE
AT 24 HRS VALID AT 170000 UTC 27.2S 166.7E MOV SE AT 16KT WITH 30 KT
CLOSE TO CENTRE

OUTLOOK :
AT 36 HRS VALID AT 171200 UTC 30.2S 171.8E MOV SE AT 20KT WITH 30 KT
CLOSE TO CENTRE

THE NEXT TROPICAL DISTURBANCE ADVISORY ON TROPICAL DEPRESSION 15F
WILL BE ISSUED AROUND 160800 UTC.

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#10 Postby HURAKAN » Sat Apr 16, 2011 6:57 am

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