Wednesday, June 02, 2010
Wind speed estimation for Cyclone "Phet"
Only when IMD says it has crossed 220km/hr then only it will be named as supercyclone
current intensity of phet
NRL
—————
Best status from NRL: 110kts 941 mb
ADVANCED DVORAK TECHNIQUE
—————————-
Pressure/ Vmax
924.4mb/117.4kt
IMD
——–
But according IMD the pressure about 980mb.
JTWC
———
THE CURRENT INTENSITY ASSESSED
AT 110 KNOTS
posted by Pradeep
current intensity of phet
NRL
—————
Best status from NRL: 110kts 941 mb
ADVANCED DVORAK TECHNIQUE
—————————-
Pressure/ Vmax
924.4mb/117.4kt
IMD
——–
But according IMD the pressure about 980mb.
JTWC
———
THE CURRENT INTENSITY ASSESSED
AT 110 KNOTS
posted by Pradeep
7:30pm, Heavy thunder storms all along western Ghats and towards coast from Maharastra to Kerala.... http://ow.ly/i/1SlV
Cyclone "03 A - Phet" ...Update # 9.. Very near to Oman
Too close to Oman.
Still moving in North-West direction and NO sign of re-curve.
The system should re-curve in another 6 hrs or crash over Oman in another 24 hrs.
JTWC warning
--------------------------------
JTWC projected path
--------------------------------
Satellite shot at 7pm IST
-----------------------------------------
Still moving in North-West direction and NO sign of re-curve.
The system should re-curve in another 6 hrs or crash over Oman in another 24 hrs.
JTWC warning
--------------------------------
021500Z POSITION NEAR 18.4N 59.8E. TROPICAL CYCLONE (TC) 03A (PHET), LOCATED APPROXIMATELY 560 NM SOUTHWEST OF KARACHI, PAKISTAN, HAS TRACKED NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. TC 03A HAS CONTINUED TO RAPIDLY INTENSIFY OVER THE PAST 12 HOURS WITH THE CURRENT INTENSITY ASSESSED AT 125 KNOTS BASED ON THE PGTW DVORAK ESTIMATE OF 127 KNOTS. ANIMATED MULTISPECTRAL IMAGERY SHOWS A WELL-DEFINED 30 NM EYE. A MID- LATITUDE, UPPER LEVEL TROUGH IS PROVIDING A POLEWARD OUTFLOW CHANNEL FAVORABLE FOR CONTINUED INTENSIFICATION. TC 03A CONTINUES TO TRACK NORTHWESTWARD ALONG THE SOUTHWESTERN PERIPHERY OF A SUBTROPICAL STEERING RIDGE AND IS EXPECTED TO MAKE LANDFALL ONTO THE COAST OF OMAN BY TAU 36, WHERE IT SHOULD SLOW AND WEAKEN SIGNIFICANTLY OVER LAND. IT WILL THEN BEGIN TO RECURVE AROUND THE SUBTROPICAL RIDGE INTO THE WESTERLIES AND BEGIN TO ACCELERATE IN SPEED. TC PHET SHOULD THEN ENTER BACK OVER THE NORTHERN ARABIAN SEA BY TAU 72 WITH AN INTENSITY OF 45 KNOTS. TC 03A WILL CONTINUE NORTHEASTWARD WITH LITTLE CHANCE OF INTENSIFICATION DUE TO HIGHER VERTICAL WIND SHEAR AND SHOULD REACH THE COAST OF PAKISTAN BY TAU 96. TC PHET WILL DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND BY TAU 120. THE AVAILABLE NUMERICAL MODEL GUIDANCE STILL SHOWS A SPLIT BETWEEN THE FASTER RECURVERS (UKMO, ECMWF, WBAR) AND THOSE THAT ARE SLOWER (GFDN, GFS, NOGAPS), TAKING THE SYSTEM OVER OMAN. THE MODEL GUIDANCE HAS CONTINUALLY SHIFTED WESTWARD WITH A SLOWER RECURVE TO THE EAST. THIS FORECAST FAVORS THE MODELS SLOWER TO RECURVE AND IS SIMILAR TO MODEL CONSENSUS, TAKING TC 03A OVER OMAN AND WEAKENING IT SIGNIFICANTLY MORE THAN PREVIOUSLY FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 021200Z IS 27 FEET.
JTWC projected path
--------------------------------
Satellite shot at 7pm IST
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Category:
Cyclones,
India,
JTWC,
South West Monsoon
RT @abnashbudhani: foto taken after the heavy rainfall in aurangabad at around 6.45 pm http://ping.fm/6zT4Y @weatherofindia
"Phet" Update: 6pm IST
"Phet" Update: 6pm IST
"PHET" has strengthened further to Very Severe Cyclonic Storm during the last 6 hours. Current location is 18.2N 60.0E about 300 Kms South East of Oman Coast. Winds are at 125 Knots with Central pressure of about 929 Mb. The Wave height is 7 meters. Defying all predictions, of re-curving at 62E, it has moved North-Northwest continuously, and has progressed towards Oman. It is expected to strengthen further and track mainly North- Northwestwards direction for the next 24 to 36 hours. Now, it is expected to initially strike the North-Eastern coast of Oman in the next 24 hrs.
The re-curving promise holds good still. After striking Oman, the storm is predicted to move North-East back into the Arabian Sea. The influence of Western Disturbance has to be watched carefully to see how this system tracks after 36 hours. Various Forecast models are differing on the final track "PHET.''
It is important for all Arabian Sea coastline countries from Oman, Iran, Pakistan & India to be watchful and closely monitor "PHET" for any track changes.
Saurashtra & Gujarat:
Even though "Phet" is more than 1100 Kms. from Saurashtra Coast, due to the Intensity of this system, we can expect windy conditions and scattered rains in pockets for Saurashtra due to the the moisture incursion from Arabian Sea..
Oman:
"PHET" is only 300 Kms South-East of Oman Coast and due to the proximity precautions about very windy conditions as well as flash flooding due to rains need to be taken. Most Forecast models are expecting a Recurve North Eastwards after 36 hours.
"PHET" has strengthened further to Very Severe Cyclonic Storm during the last 6 hours. Current location is 18.2N 60.0E about 300 Kms South East of Oman Coast. Winds are at 125 Knots with Central pressure of about 929 Mb. The Wave height is 7 meters. Defying all predictions, of re-curving at 62E, it has moved North-Northwest continuously, and has progressed towards Oman. It is expected to strengthen further and track mainly North- Northwestwards direction for the next 24 to 36 hours. Now, it is expected to initially strike the North-Eastern coast of Oman in the next 24 hrs.
The re-curving promise holds good still. After striking Oman, the storm is predicted to move North-East back into the Arabian Sea. The influence of Western Disturbance has to be watched carefully to see how this system tracks after 36 hours. Various Forecast models are differing on the final track "PHET.''
It is important for all Arabian Sea coastline countries from Oman, Iran, Pakistan & India to be watchful and closely monitor "PHET" for any track changes.
Saurashtra & Gujarat:
Even though "Phet" is more than 1100 Kms. from Saurashtra Coast, due to the Intensity of this system, we can expect windy conditions and scattered rains in pockets for Saurashtra due to the the moisture incursion from Arabian Sea..
Oman:
"PHET" is only 300 Kms South-East of Oman Coast and due to the proximity precautions about very windy conditions as well as flash flooding due to rains need to be taken. Most Forecast models are expecting a Recurve North Eastwards after 36 hours.
Category:
Cyclones
The NLM
The 'VERY SEVERE CYCLONIC STROM [VSCS]' PHET enabled SWM winds to attain the maximum northern limit of monsoon. [Even the phraseology VSCS is changed after Orissa Super cyclone in 1999.] This will help monsoon wind to blow anywhere once the PHET ceased to exist. This will lead to more variability of rainfall in space and time. At this rate Kerala and Karnataka may NOT get their due share for the month of June (or even the rest of monsoon period). It is true that each year the SWM is different and no two SWM pattern is unique. After all it is RAINFALL that the monsoon's activity and strength is measured as VIGOROUS, ACTIVE, NORMAL OR WEAK.
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