RECORD OF WINDS,CENTRAL PRESSURE AND DAMAGE OF TROPICAL CYCLONE PHYAN IN THE ARABIAN SEA.

METD WEATHER STATION
DATA OBSERVATION CENTER
NAGPUR,INDIA

SUBJECT-

OBSERVATIONS FROM TROPICAL CYCLONE PHYAN

DEAR ALL
WE HAVE RECEIVED THE DATAS FROM THE CYCLONE PHYAN LIKE WIND KNOT,CENTRAL PRESSURE, DESTRUCTION ETC

A cyclonic storm, 'Phyan' crossed Maharashtra coast between Alibag and
Mumbai between 1530 and 1630 hrs IST of 11th November, 2009.

Best track Positions and other parameters for cyclonic storm PHYAN over
the Arabian Sea during 09-12 November 2009


THE DATA IS AS FOLLOWS
DD/MM/YY/ TIME/ LAT/LONG/CI.NO/CENTRAL PRESSURE/WIND KNOT/GRADE
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9-11-2009

0900 11.0/72.0 1.5 1000 4 25 D
1200 11.5/71.5 1.5 1000 4 25 D
1800 12.0/71.0 1.5 1000 4 25 D

10-11-2009

0000 12.5/70.5 1.5 998 4 25 D
0300 13.0/70.5 2.0 998 5 30 DD
0600 13.5/70.5 2.0 998 5 30 DD
1200 14.5/71.0 2.0 996 5 30 DD
1800 15.0/71.0 2.5 996 6 35 CS
2100 15.5/71.5 2.5 994 6 35 CS

11-11-2009
0000 16.0/71.5 2.5 992 8 40 CS
0300 17.0/72.0 3.0 990 10 45 CS
0600 17.5/72.5 3.0 988 12 45 CS
0900 19.0/73.0 2.5 992 8 40 CS

The cyclonic storm "PHYAN" crossed Maharashtra coast between Alibag and
Mumbai between 1000 & 1100 UTC of 11th November, 2009.
1200 19.5/73.5 -- 996 5 30 DD
1500 20.0/74.0 -- 998 5 30 DD
1800 20.0/74.0 -- 1000 4 20 D

12-11-2009
0000 The system weakened into a well marked low pressure area over north Madhya Maharashtra.

GRADE INDEX

D : Depression,
DD : Deep depression
CS : Cyclonic Storm

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MUMBAI LOSS

THE CYCLONE WAS A DEEP DEPRESSION WHICH HAD LOST ITS PRECIOUS CORE. IT WAS FILLED WITH WATER AND WINDS ONLY

LANDFALL FOR MUMBAI WAS ON 11TH NOV 09 AT 15:30HRS
WIND KNOTS-
30
CENTRAL PRESSURE
998hPa
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FOR CYCLONGENESIS

Environmental features
The environmental features like sea surface temperature, vertical wind shear
of horizontal wind, mid-tropospheric humidity, low level convergence, upper level
divergence and coriolis force were favourable for cyclogenesis over the southeast
Arabian Sea on 9th. The sea surface temperature was about 28-30 deg. C over
southeast and east central Arabian Sea. The vertical wind shear of horizontal wind
was low to moderate (10-20 knots) at 0830 hrs IST of 9th. In addition, the Madden
Julian Oscillation was also favourable, as its active phase lay over west equatorial.

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WIND HISTORY

The maximum wind (Kmph) reported at observatory stations of IMD at the
time of land fall are given below:
Pune : 68,
Goa 63,
Colaba,MUMBAI- 56.
However, according to Newspaper report, maximum surface wind was about
75 kmph along Maharashtra coast at the time of landfall.
The wind speed predicted at the time was 65--75 kmph gusting to 85 kmph
along and off Maharashtra and Goa coast based on 0830 IST observation of 10th
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Damage:

According to Newspaper report, the cyclone 'Phyan' caused damage to lives,
crops and properties in Goa and Konkan region especially in Ratnagiri, Sindhudurg,
Raigad and Thane districts. About 1000 houses in these districts suffered damages.
Seven persons died and 44 are missing due to cyclone 'Phyan'.
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METD WEATHER STATION
AKSHAY DEORAS