SWPAC: INNIS - former Cyclone: Discussion

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SWPAC: INNIS - former Cyclone: Discussion

#1 Postby wyq614 » Sat Feb 14, 2009 1:28 am

Tropical Disturbance Summary For area Equator to 25S, 160E to 120W
ISSUED FROM RSMC NADI Feb 13/2351 UTC 2009 UTC.

TROPICAL DISTURBANCE TD10F [1007HPA] ANALYSED NEAR 18S 174E AT 132100
UTC SLOW MOVING. POSITION POOR BASED ON MTSAT IR/VIS WITH ANIMATION.
SST AROUND 29 DEGREE CELCIUS.

SYSTEM LIES TO THE NORTH OF A 250HPA TROUGH UNDER A DIFFLUENT REGION
WITH LLCC DIFFICULT TO LOCATE. CONVECTION HAS BEEN PERSISTENT FOR THE
LAST 24 HOURS. HOWEVER, ORGANISATION REMAINS DISORGANISED. TD10F IS
STEERED BY LOW LEVEL NORTHEASTERLIES INTO AN AREA OF MODERATE SHEAR.

GLOBAL MODELS [UK/EC/GFS] HAVE PICKED THE SYSTEM AND SLOWLY MOVING IT
SOUTHWEST WITH LITTLE INTENSIFICATION.

POTENTIAL FOR TD10F TO DEVELOP INTO A TROPICAL CYCLONE IN THE NEXT 24
TO 48 HOURS IS LOW.


NO OTHER SIGNIFICANT TROPICAL DISTURBANCE ANALYSED OR FORECAST FOR
THE AREA.

14/0230 UTC 18.3S 173.9E T1.0/1.0 INVEST (IN1) -- Southwest Pacific

However, it is worth noting that EC has it move southwest and strike New Caledonia directly as a tropical storm in long-range outlook for quite a few forecasts.
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Re: SWPAC: Tropical Depression 10F (Invest 93P) - Discussion

#2 Postby Crostorm » Sat Feb 14, 2009 1:08 pm

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#3 Postby Chacor » Sun Feb 15, 2009 7:44 am

Tropical Disturbance Summary For area Equator to 25S, 160E to 120W
ISSUED FROM RSMC NADI Feb 15/0947 UTC 2009 UTC.

TROPICAL DEPRESSION TD10F [1003HPA] LOCATED NEAR 17.4S 170.9E AT
150900 UTC MOVING WEST 04 KNOTS. POSITION POOR BASED ON MTSAT IR
IMAGERY WITH ANIMATION AND LATEST QUIKSCAT PASS. SST AROUND 28-29
DEGREE CELCIUS.

SYSTEM LIES TO THE NORTH OF A 250HPA ANTI-CYCLONIC CIRCULATION IN A
DIFFLUENT REGION. PULSATING CONVECTION LIES JUST TO THE NORTH OF
LLCC. OUTFLOW IS EXPOSED TO THE NORTH BUT RESTRICTED ELSEWHERE.
ASSOCIATED CYCLONIC CIRCULATION EXTENDS TO 500HPA. . A NORTHWESTERLY
SURGE ASSOCIATED WITH A CONVERGENCE ZONE LIES TO THE NORTH. LATEST
WATER VAPOUR SHOWS DRY AIR ENTRAINMENT FROM THE SOUTH.10F IS EXPECTED
TO MOVE WESTWARDS DUE TO A LOW-LEVEL EASTERLY STEERING WITH A RIDGE
BUILDING TO THE SOUTH. CIMSS INDICATES 20 KNOT ENVIRONMENTAL SHEAR
OVER THE SYSTEM. HOWEVER, ON ITS FORECAST TRACK 10F IS EXPECTED TO
MOVE INTO AREA OF LOW SHEAR.

GLOBAL MODELS [UK/EC/GFS] AGREE ON A WESTWARD TRACK AND THEN
SOUTHWEST WITH SLIGHT INTENSIFICATION.

POTENTIAL FOR 10F TO DEVELOP INTO A TROPICAL CYCLONE IN THE NEXT 24
TO 48 HOURS IS LOW TO MODERATE.

NO OTHER SIGNIFICANT TROPICAL DISTURBANCE ANALYSED OR FORECAST FOR
THE AREA.
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Re: SWPAC: Tropical Depression 10F (Invest 93P) - Discussion

#4 Postby HURAKAN » Sun Feb 15, 2009 7:07 pm

Image

WTPS21 PGTW 152130
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
200 NM EITHER SIDE OF A LINE FROM 16.9S 172.3E TO 21.1S 165.9E
WITHIN THE NEXT 06 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IM-
AGERY AT 152100Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 17.2S 171.5E. THE SYSTEM IS MOVING WESTWARD AT 06 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 20.8S
171.5E IS NOW LOCATED NEAR 17.2S 171.5E, APPROXIMATELY 340 NM WEST
OF FIJI. ANIMATED INFRARED SATELLITE IMAGERY INDICATES SIGNIFICANTLY
IMPROVED CONSOLIDATION OVER THE PAST 06 HOURS WITH CONVECTIVE BAND-
ING WRAPPING INTO A DEFINED LOW-LEVEL CIRCULATION CENTER (LLCC). A
15/1850Z SSMI IMAGE SHOWED STRONG BANDING OVER THE NORTHERN SEMI-
CIRCLE WITH WEAKER, FORMATIVE BANDING OVER THE SOUTHEAST QUADRANT,
AND A SOMEWHAT ELONGATED LLCC. A 15/1833Z QUIKSCAT IMAGE ALSO SHOWS
A STRONGER (BUT ELONGATED) LLCC WITH 25-30 KNOT UNFLAGGED WINDS
NEAR THE CENTER. THE UPPER-LEVEL ENVIRONMENT HAS IMPROVED CONSID-
ERABLY WITH THE 15/18Z STREAMLINE ANALYSIS INDICATING A DEVELOPING
ANTICYCLONE OVER THE LLCC AND ENHANCED POLEWARD OUTFLOW CAUSED BY
A SHIFT IN THE UPPER-LEVEL TROUGH/LOW NORTHWEST OF THE SYSTEM.
ANIMATED WATER VAPOR IMAGERY REFLECTS THIS IMPROVEMENT WITH EXPAND-
ING POLEWARD OUTFLOW EVIDENT OVER THE SOUTHERN SEMI-CIRCLE. SST IS
ALSO FAVORABLE FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE
IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT
OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED
BY 162130Z.//
NNNN
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#5 Postby HURAKAN » Mon Feb 16, 2009 5:14 pm

WTPS21 PGTW 162130
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
165 NM EITHER SIDE OF A LINE FROM 19.6S 166.5E TO 21.6S 159.4E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IM-
AGERY AT 161800Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 20.0S 165.9E. THE SYSTEM IS MOVING WEST-SOUTHWESTWARD AT 18
KNOTS.
2. REMARKS:
THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 17.2S 171.5E
171.5E IS NOW LOCATED NEAR 20.0S 165.9E, APPROXIMATELY 150 NM NORTH-
NORTHWEST OF NOUMEA, NEW CALEDONIA. ANIMATED INFRARED SATELLITE
IMAGERY INDICATES A WELL DEFINED LOW LEVEL CIRCULATION CENTER (LLCC)
THAT HAS SEEN A SIGNIFICANT INCREASE IN BANDING CONVECTION DEVELOPING
TOWARDS THE CENTER AS INDICATED BY A 161720Z AMSU-B PASS. THE LLCC
HAS REMAINED WELL DEFINED OVER THE PAST 06 HOURS BUT MODERATE VERT-
ICAL WIND SHEAR HAS ALLOWED THE LLCC TO REMAIN PARTIALLY EXPOSED WITH
THE MAJORITY OF CONVECTION ON THE SOUTHERN AND SOUTHEASTERN PERIPHERY
BUT IMPROVING. THE UPPER-LEVEL ENVIRONMENT HAS REMAINED FAVORABLE
WITH AN ANTICYCLONE OVER THE LLCC AND ENHANCED POLEWARD OUTFLOW
CAUSED BY A SHIFT IN THE UPPER-LEVEL TROUGH/LOW NORTHWEST OF THE
SYSTEM. ANIMATED WATER VAPOR IMAGERY REFLECTS THIS IMPROVEMENT WITH
EXPANDING POLEWARD OUTFLOW EVIDENT OVER THE SOUTHERN SEMI-CIRCLE.
SST IS ALSO FAVORABLE FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED
SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL
PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS REMAINS GOOD.
THIS SUPERSEDES REF A.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY
172130Z.//
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#6 Postby HURAKAN » Mon Feb 16, 2009 10:33 pm

Image

Image

NRL: 15P - 35 knots
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Re: SWPAC: Tropical Depression 10F (Invest 93P) - Discussion

#7 Postby HURAKAN » Mon Feb 16, 2009 10:35 pm

Image

WTPS31 PGTW 170300
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE 15P (FIFTEEN) WARNING NR 001//
RMKS/
1. TROPICAL CYCLONE 15P (FIFTEEN) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
---
WARNING POSITION:
170000Z --- NEAR 20.7S 165.1E
MOVEMENT PAST SIX HOURS - 225 DEGREES AT 10 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
REPEAT POSIT: 20.7S 165.1E
---
FORECASTS:
12 HRS, VALID AT:
171200Z --- 22.9S 163.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 205 DEG/ 18 KTS
---
24 HRS, VALID AT:
180000Z --- 26.2S 161.4E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 190 DEG/ 18 KTS
---
36 HRS, VALID AT:
181200Z --- 29.8S 160.8E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT
055 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 155 DEG/ 21 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
190000Z --- 33.5S 162.9E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
---
REMARKS:
170300Z POSITION NEAR 21.2S 164.6E.
TROPICAL CYCLONE (TC) 15P (FIFTEEN), LOCATED APPROXIMATELY 120 NM
NORTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTHWESTWARD AT 10
KNOTS OVER THE PAST 06 HOURS. ANIMATED MULTISPECTRAL IMAGERY
INDICATES IMPROVING CONVECTION DEVELOPING OVER A LOW LEVEL
CIRCULATION CENTER (LLCC). A 161824Z WINDSAT PASS INDICATES TIGHT
BANDING WRAPPING ABOUT THE LLCC WITH DEEP CONVECTION ON THE SOUTHERN
PERIPHERY. THE UPPER-LEVEL ENVIRONMENT HAS REMAINED FAVORABLE
WITH AN ANTICYCLONE OVER THE LLCC AND ENHANCED POLEWARD OUTFLOW
CAUSED BY A SHIFT IN THE UPPER-LEVEL TROUGH/LOW NORTHWEST OF THE
SYSTEM. ANIMATED WATER VAPOR IMAGERY REFLECTS THIS IMPROVEMENT WITH
EXPANDING POLEWARD OUTFLOW EVIDENT OVER THE SOUTHERN SEMI-CIRCLE.
SST IS ALSO FAVORABLE FOR FURTHER DEVELOPMENT. TC 15P WILL TRACK
AROUND A MID-LEVEL SUBTROPICAL RIDGE THAT IS WEAKENING ON ITS
WESTERN FLANK AND WILL ALLOW THE SYSTEM TO SHIFT FROM A
SOUTHWESTWARD TRACK TO A SOUTHWARD TRACK. CONTINUED UPPER LEVEL
OUTFLOW AND A FAVORABLE SST WILL ALLOW TC 15P TO INTENSIFY THROUGH
TAU 36 THEN BEGIN TO WEAKEN AS A MID-LATITUDE TROUGH INTERACTS WITH
TC 15P. THIS FORECAST FAVORS THE CONSENSUS OF DYNAMIC AIDS WHICH ARE
IN FAIR AGREEMENT. THIS WARNING SUPERSEDES AND CANCELS REF A,
NAVMARFCSTCEN 162121Z FEB 09 TROPICAL CYCLONE FORMATION ALERT
(WTPS21 PGTW 162130) MAXIMUM SIGNIFICANT WAVE HEIGHT AT 170000Z IS
10 FEET. NEXT WARNINGS AT 171500Z AND 180300Z.//
NNNN
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Re: SWPAC: Tropical Depression 10F (TC 15P) - Discussion

#8 Postby HurricaneBill » Mon Feb 16, 2009 11:27 pm

I think the next name is "Innis".
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#9 Postby Crostorm » Tue Feb 17, 2009 3:30 am

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 7.2.3
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 17 FEB 2009 Time : 073200 UTC
Lat : 22:01:07 S Lon : 163:50:40 E


CI# /Pressure/ Vmax
3.1 / 989.6mb/ 47.0kt


Final T# Adj T# Raw T#
(3hr avg)
3.1 2.9 2.9

Latitude bias adjustment to MSLP : +0.0mb

Center Temp : -54.8C Cloud Region Temp : -51.0C

Scene Type : UNIFORM CDO CLOUD REGION

Positioning Method : FORECAST INTERPOLATION

Ocean Basin : WEST PACIFIC
Dvorak CI > MSLP Conversion Used : PACIFIC

Tno/CI Rules : Constraint Limits : NO LIMIT
Weakening Flag : OFF
Rapid Dissipation Flag : OFF
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Re: SWPAC: Tropical Depression 10F (TC 15P) - Discussion

#10 Postby Crostorm » Tue Feb 17, 2009 3:32 am

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Re: SWPAC: Tropical Depression 10F (TC 15P) - Discussion

#11 Postby Crostorm » Tue Feb 17, 2009 3:33 am

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#12 Postby HURAKAN » Tue Feb 17, 2009 6:19 am

Gale Warning 026 ISSUED FROM RSMC NADI Feb 17/0717 UTC 2009 UTC.

Tropical Cyclone INNIS 10F [995hPa] centre was located near 21
decimal 8 South 163 decimal 9 East at 170600 UTC.
Position Poor.
Repeat position 21.8S 163.9E at 170600 UTC.
Cyclone moving south-southwest at about 13 knots.
Expect sustained winds of 35 knots close to the centre, increasing to
40 knots during the next 6 to 12 hours.
Expect winds over 33 knots within 200 nautical miles of centre in the
southern quadrant and within 120 nautical miles elsewhere of centre.

Forecast position near 24.5S 162.4E at 171800 UTC.
and near 27.9S 160.1E at 180600 UTC.

All vessels within 300 nautical miles of centre are requested to
send
reports every three hours. VOS reporting ships use normal channels.
Other vessels fax plus 679 6720190 or email naditcc at met dot gov
dot fj.

This warning cancels and replaces warning 025.
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#13 Postby HURAKAN » Tue Feb 17, 2009 7:07 am

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#14 Postby HURAKAN » Tue Feb 17, 2009 8:07 am

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#15 Postby HURAKAN » Tue Feb 17, 2009 8:34 am

Gale Warning 027 ISSUED FROM RSMC NADI Feb 17/1316 UTC 2009 UTC.

Tropical Cyclone INNIS 10F [990hPa] centre was located near 22
decimal 9 South 163 decimal 7 East at 171200 UTC.
Position Poor.
Repeat position 22.9S 163.7E at 171200 UTC.
Cyclone moving south-southwest at about 13 knots.
Expect sustained winds of 40 knots close to the centre.
Expect winds over 33 knots within 150 nautical miles of centre in the
southern semicircle and within 120 nautical miles of centre in the
northern semicircle.

Forecast position near 26.2S 163.1E at 180000 UTC.
and near 29.9S 161.7E at 181200 UTC.

All vessels within 300 nautical miles of centre are requested to
send
reports every three hours. VOS reporting ships use normal channels.
Other vessels fax plus 679 6720190 or email naditcc at met dot gov
dot fj.

This warning cancels and replaces warning 026.
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#16 Postby Chacor » Tue Feb 17, 2009 10:08 am

TROPICAL DISTURBANCE ADVISORY NUMBER A7 ISSUED FROM RSMC NADI
Feb 17/1425 UTC 2009 UTC.

***CORRECTION FOR ADVISORY NUMBER***
TROPICAL CYCLONE INNIS 10F [990HPA] CENTRE WAS LOCATED NEAR 22.9S
163.7E AT 171200 UTC.POSITION POOR BASED ON MTSAT/IR IMAGERY AND
RECENT MICROWAVE PASS. CYCLONE MOVING SOUTH-SOUTHWEST AT ABOUT 13
KNOTS. EXPECT SUSTAINED WINDS OF 40 KNOTS CLOSE TO THE CENTRE. EXPECT
WINDS OVER 33 KNOTS WITHIN 150 NAUTICAL MILES OF CENTRE IN THE
SOUTHERN SEMICIRCLE AND WITHIN 120 NAUTICAL MILES OF CENTRE IN THE
NORTHERN SEMICIRCLE.

OVERALL ORGANISATION HAS IMPROVED IN THE PAST 24 HOURS. THE SYSTEM
REMAINS UNDER A GOOD DIFFLUENT REGION WITH AN UPPER TROUGH TO THE FAR
WEST. CYCLONE LOCATED JUST NORTH OF A WEAK JET ENTRANCE REGION.
DVORAK ANALYSIS BASED ON A WRAP OF 0.45 ON LOG10 SPIRAL YIELDS
DT=2.5, MET=PT=3.0. FT BASED ON MET, THUS T3.0/3.0/D1.5 24HRS. CIMMS
INDICATES THAT THE SYSTEM LIES IN A LOW SHEARED ENVIRONMENT AND IS
EXPECTED TO MOVE INTO INCREASING SHEAR BEYOND 12 TO 18 HOURS. SST
AROUND 28C. INNIS IS STEERED SOUTH SOUTHWEST BY A NORTHERLY DEEP
LAYER MEAN FLOW. GLOBAL MODELS INDICATE INNIS WILL REMAIN ON A
SOUTHERLY TRAJECTORY WITH LITTLE INTENSIFICATION.

FORECASTS:
12HRS VALID AT 180000 UTC NEAR 26.2S 163.1E MOV SSW 15KT WITH 40 KT
CLOSE TO CENTRE.
24HRS VALID AT 181200 UTC NEAR 29.9S 161.7E MOV SSW 18KT WITH 40 KT
CLOSE TO CENTRE.

OUTLOOK:
36HRS VALID AT 190000 UTC NEAR 33.6S 161.9E MOV S 20KT WITH 40KT
CLOSE TO THE CENTRE.
48HRS VALID AT 191200 UTC NEAR 36.1S 163.9E MOV SSE 15KT WITH 40KT
CLOSE TO THE CENTRE.


THE NEXT TROPICAL DISTURBANCE ADVISORY ON TC INNIS WILL BE ISSUED
AROUND 172030 UTC.
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Re: SWPAC: INNIS - Tropical Cyclone: Discussion

#17 Postby AirNik » Tue Feb 17, 2009 4:55 pm

It's going at a good speed now, looks to stay away from Australia. Heavy rain will probably be a much bigger issue than the wind on the islands.
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#18 Postby HURAKAN » Tue Feb 17, 2009 8:42 pm

Gale Warning 028 ISSUED FROM RSMC NADI Feb 17/1940 UTC 2009 UTC.

CORRECTION TO CENTRAL PRESSURE...
Tropical Cyclone INNIS 10F [995hPa] centre was re-located near 24
decimal 8 South 160 decimal 5 East at 171800 UTC.
Position Poor.
Repeat position 24.8S 160.5E at 171800 UTC.
Cyclone moving southwest at about 18 knots.
Expect sustained winds of 35 knots close to the centre.
Expect winds over 33 knots within 150 nautical miles of centre in the
southern semicircle and within 120 nautical miles of centre in the
northern semicircle.

Forecast position near 28.8S 158.8E at 180600 UTC.
and near 33.4S 158.5E at 181800 UTC.

All vessels within 300 nautical miles of centre are requested to
send
reports every three hours. VOS reporting ships use normal channels.
Other vessels fax plus 679 6720190 or email naditcc at met dot gov
dot fj.

This warning cancels and replaces warning 027
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Re: SWPAC: INNIS - Tropical Cyclone: Discussion

#19 Postby HURAKAN » Tue Feb 17, 2009 8:47 pm

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#20 Postby Chacor » Tue Feb 17, 2009 8:55 pm

TROPICAL DISTURBANCE ADVISORY NUMBER A8 ISSUED FROM RSMC NADI
Feb 17/2026 UTC 2009 UTC.

TROPICAL CYCLONE INNIS 10F [995HPA] CENTRE WAS LOCATED NEAR 24.8S
160.5E AT 171800 UTC. POSITION POOR BASED ON MTSAT/EIR IMAGERY AND
RECENT MICROWAVE PASS. CYCLONE MOVING SOUTHWEST AT ABOUT 18 KNOTS.
EXPECT SUSTAINED WINDS OF 35 KNOTS CLOSE TO THE CENTRE. EXPECT WINDS
OVER 33 KNOTS WITHIN 150 NAUTICAL MILES OF CENTRE IN THE SOUTHERN
SEMICIRCLE AND WITHIN 120 NAUTICAL MILES OF CENTRE IN THE NORTHERN
SEMICIRCLE.

LLCC SHEARED LESS THAN 3/4 DEG FROM DEEP CONVECTION. THE SYSTEM
REMAINS UNDER A DIFFLUENT REGION AND 25 KNOT SHEAR. CYCLONE LOCATED
JUST NORTH OF A WEAK JET ENTRANCE REGION. DVORAK ANALYSIS BASED ON
SHEAR YIELDS DT=2.5, MET=PT=2.5. FT BASED ON MET, THUS
T2.5/3.0/D0.5/24HRS. CIMMS INDICATES DECREASING SHEAR TO THE SOUTH.
SST AROUND 27C. INNIS IS BEING STEERED SOUTHWESTWARDS BY LOW TO MID
LEVEL NORTHEASTERLIES. GLOBAL MODELS AGREE ON A GRADUAL TURN TO A
SOUTHERLY TRACK WITH LITTLE INTENSIFICATION.

FORECASTS:
12HRS VALID AT 180600 UTC NEAR 28.8S 158.8E MOV SSW 22KT WITH 35 KT
CLOSE TO CENTRE.
24HRS VALID AT 181800 UTC NEAR 33.4S 158.5E MOV S 23KT WITH 35 KT
CLOSE TO CENTRE.

OUTLOOK:
36HRS VALID AT 190600 UTC NEAR 37.9S 159.4E MOV SSE 12KT WITH 35KT
CLOSE TO THE CENTRE.
48HRS VALID AT 191800 UTC NEAR 41.4S 161.4E MOV SSE 10KT WITH 35KT
CLOSE TO THE CENTRE.


THIS IS THE FINAL TROPICAL DISTURBANCE ADVISORY ON TC INNIS AS IT IS
MOVING OUT OF NADI'S AREA OF RESPONSIBILITY.
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