TROPICAL STORM TOMAS ADVISORY 3A

[Nws Olney Maryland]

BULLETIN
TROPICAL STORM TOMAS INTERMEDIATE ADVISORY NUMBER 3A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL212010
200 AM AST SAT OCT 30 2010

...CENTER OF TOMAS WILL PASS NEAR BARBADOS IN THE NEXT FEW HOURS...


SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...12.4N 58.8W
ABOUT 75 MI...115 KM SE OF BARBADOS
ABOUT 175 MI...280 KM ESE OF ST. VINCENT
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/HR
PRESENT MOVEMENT...WNW OR 300 DEGREES AT 15 MPH...24 KM/HR
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* BARBADOS
* ST. VINCENT AND THE GRENADINES
* ST. LUCIA
* MARTINIQUE

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* TRINIDAD AND TOBAGO
* GRENADA
* DOMINICA

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN 24 HOURS.
PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE NEARING
COMPLETION.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN
24 HOURS.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 200 AM AST...0600 UTC...THE CENTER OF TROPICAL STORM TOMAS WAS
LOCATED NEAR LATITUDE 12.4 NORTH...LONGITUDE 58.8 WEST. TOMAS IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 15 MPH...24 KM/HR. THIS
GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH EARLY SUNDAY...
WITH A TURN TOWARD THE WEST AND SOME DECREASE IN FORWARD SPEED
EXPECTED LATE SUNDAY. ON THE FORECAST TRACK...THE CENTER OF TOMAS
WILL APPROACH BARBADOS IN THE NEXT FEW HOURS AND MOVE ACROSS THE
REMAINDER OF THE NORTHERN WINDWARD ISLANDS ON SATURDAY.

MAXIMUM SUSTAINED WINDS REMAIN NEAR 65 MPH...100 KM/HR...WITH HIGHER
GUSTS. STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...AND
TOMAS COULD BECOME A HURRICANE BY SATURDAY MORNING.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 105 MILES...165 KM
FROM THE CENTER.

BARBADOS RECENTLY REPORTED A 10-MINUTE WIND OF 38 MPH...61 KM/HR.
A WIND GUST TO 58 MPH...93 KM/HR...WAS REPORTED ON BARBADOS A
COUPLE OF HOURS AGO.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB...29.44 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE OCCURRING ON BARBADOS...AND
WILL SPREAD ACROSS THE REMAINDER OF THE WARNING AREA EARLY
SATURDAY. HURRICANE CONDITIONS ARE EXPECTED ON BARBADOS EARLY
SATURDAY AND WITHIN THE REMAINDER OF THE HURRICANE WARNING AREA
LATER SATURDAY MORNING.

RAINFALL...TOMAS IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS
OF 3 TO 5 INCHES...WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 8
INCHES...ACROSS PORTIONS OF THE WINDWARD AND SOUTHERN LEEWARD
ISLANDS.

STORM SURGE...A DANGEROUS STORM SURGE WILL RAISE WATER LEVELS BY
AS MUCH AS 1 TO 3 FEET ABOVE NORMAL TIDE LEVELS WITHIN AREAS OF
ONSHORE FLOW. THE SURGE WILL BE ACCOMPANIED BY LARGE AND
POTENTIALLY DESTRUCTIVE WAVES.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 AM AST.