TROPICAL STORM FIONA ADVISORY 4

[NHC Olney Maryland]

BULLETIN
TROPICAL STORM FIONA ADVISORY NUMBER 4
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL082010
1100 AM AST TUE AUG 31 2010

...FIONA CONTINUES WEST-NORTHWESTWARD...NO CHANGE IN STRENGTH...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...15.9N 55.3W
ABOUT 440 MI...705 KM E OF THE LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/HR
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 24 MPH...39 KM/HR
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES


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

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* ST. MARTIN AND ST. BARTHELEMY

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* ANTIGUA...BARBUDA...MONTSERRAT...ST. KITTS...NEVIS...AND ANGUILLA
* ST. MAARTEN...SABA...AND ST. EUSTATIUS

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 36 HOURS.

INTERESTS ELSEWHERE IN THE NORTHERN LEEWARD ISLANDS SHOULD MONITOR
THE PROGRESS OF FIONA. ADDITIONAL WATCHES OR WARNINGS MAY BE
REQUIRED FOR A PORTION OF THIS AREA LATER TODAY.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1100 AM AST...1500 UTC...THE CENTER OF TROPICAL STORM FIONA WAS
LOCATED NEAR LATITUDE 15.9 NORTH...LONGITUDE 55.3 WEST. FIONA IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 24 MPH...39 KM/HR. A TURN
TOWARD THE NORTHWEST WITH A DECREASE IN FORWARD SPEED IS
ANTICIPATED DURING THE NEXT DAY OR SO. ON THE FORECAST TRACK...THE
CENTER OF FIONA IS EXPECTED TO PASS NEAR OR NORTHEAST OF THE
NORTHERN LEEWARD ISLANDS EARLY WEDNESDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH...65 KM/HR...WITH HIGHER
GUSTS. SOME GRADUAL STRENGTHENING IS POSSIBLE DURING THE NEXT DAY
OR SO. AN AIR FORCE RECONNAISSANCE AIRCRAFT IS SCHEDULED TO
INVESTIGATE THE STORM THIS AFTERNOON.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM
TO THE NORTHEAST OF THE CENTER.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB...29.71 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS COULD SPREAD OVER PORTIONS OF THE
NORTHERN LEEWARD ISLANDS TONIGHT OR EARLY WEDNESDAY.


NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...200 PM AST.
NEXT COMPLETE ADVISORY...500 PM AST.