B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION HAS PERSISTED NEAR 6.5N 86.3E,
APPROXIMATELY 380 NM EAST OF COLOMBO, SRI LANKA. ANIMATED INFRARED
SATELLITE IMAGERY DEPICTS A BROAD LOW LEVEL CIRCULATION CENTER
(LLCC) ENHANCED BY A STRONG WESTERLY SURGE ALONG THE EQUATOR. A
121621Z GPM 89GHZ MICROWAVE IMAGE FURTHER DEPICTS THE BROAD LLCC
WITH LIMITED ASSOCIATED CONVECTION. THE DISTURBANCE IS IN A
FAVORABLE ENVIRONMENT WITH LOW (5-10 KNOT) VERTICAL WIND SHEAR, GOOD
DIVERGENCE ALOFT, AND VERY WARM SEA SURFACE TEMPERATURES. GLOBAL
MODELS SHOW FURTHER DEVELOPMENT IN THE NEXT 2-3 DAYS AS THE SYSTEM
TRACKS NORTHWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT
15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR
1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
Bulletin No.: 01 (BOB 01/2016)
Time of issue: 1200 hours IST Dated: 17.05.2016
Sub: Depression over Southwest Bay of Bengal
Yesterday’s well marked low pressure area over north Sri Lanka and adjoining areas of Gulf of
Mannar and southwest Bay of Bengal moved north-northwestwards, concentrated into a Depression
and lay centered at 11.00N and 81.00E, about 240 kms south-southeast of Chennai at 0830 hours IST
of today, the 17th May, 2016. It is likely to move north-northwestwards during next 12 hours and
northwards thereafter along north Tamil Nadu & south Andhra Pradesh coasts. It is likely to intensify
into a deep depression during next 48 hours.
Bulletin No.: 04 (BOB 01/2016)
Time of issue: 0730 hours IST Dated: 18.05.2016
Sub: Depression over Southwest Bay of Bengal
The depression over southwest Bay of Bengal moved nearly northwards in past six hours and
lay centred at 0530 hrs IST of today, the 18th May, 2016 near Latitude 13.0º N and Longitude 80.8 ºE,
about 90 Km east of Chennai and about 70 km from the coast. The system is likely to move northnortheastwards
and intensify into a deep depression and further into a cyclonic storm in during next 48 hours.
提升卡
千斤頂
