Post by NHC Olney Maryland on Sept 1, 2010 9:58:23 GMT -5
BULLETIN
TROPICAL STORM FIONA ADVISORY NUMBER 7
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL082010
500 AM AST WED SEP 01 2010
...FIONA A LITTLE STRONGER AS IT MOVES TOWARD THE NORTHERN
LEEWARD ISLANDS...
SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...17.4N 60.2W
ABOUT 200 MI...320 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/HR
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/HR
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 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...IN THIS CASE WITHIN 12
TO 18 HOURS.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 12 TO 18 HOURS.
INTERESTS ELSEWHERE IN THE NORTHERN LEEWARD ISLANDS SHOULD MONITOR
THE PROGRESS OF FIONA.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE
MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE
FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE
THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 500 AM AST...0900 UTC...THE CENTER OF TROPICAL STORM FIONA WAS
LOCATED BY RADAR AND RECONNAISSANCE AIRCRAFT TO BE NEAR LATITUDE
17.4 NORTH...LONGITUDE 60.2 WEST. FIONA IS MOVING TOWARD THE
WEST-NORTHWEST NEAR 14 MPH...22 KM/HR. A GRADUAL TURN TOWARD THE
NORTHWEST IS EXPECTED TO OCCUR LATER TODAY AND ON THURSDAY. ON THE
FORECAST TRACK...THE CENTER OF FIONA IS SHOULD PASS OVER OR JUST
NORTH OF THE NORTHERNMOST LEEWARD ISLANDS LATER THIS MORNING AND
AFTERNOON.
MAXIMUM SUSTAINED WINDS MEASURED BY AN AIR FORCE RESERVE UNIT
RECONNAISSANCE AIRCRAFT HAVE INCREASED TO NEAR 45 MPH...75
KM/HR...WITH HIGHER GUSTS. SOME SLIGHT STRENGTHENING IS POSSIBLE
DURING THE NEXT 24 HOURS...FOLLOWED BY LITTLE CHANGE INTENSITY
AFTER THAT.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM
FROM THE CENTER.
THE MINIMUM CENTRAL PRESSURE RECENTLY MEASURED BY RECONNAISSANCE
AIRCRAFT WAS 1004 MB...29.65 INCHES.
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS COULD SPREAD OVER PORTIONS OF THE
NORTHERN LEEWARD ISLANDS BY LATER THIS MORNING AND AFTERNOON.
RAINFALL...FIONA IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF
1 TO 3 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF 5 INCHES...OVER
PORTIONS OF THE NORTHERN LEEWARD ISLANDS.
NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...800 AM AST.
NEXT COMPLETE ADVISORY...1100 AM AST.
TROPICAL STORM FIONA ADVISORY NUMBER 7
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL/OLNEY MD AL082010
500 AM AST WED SEP 01 2010
...FIONA A LITTLE STRONGER AS IT MOVES TOWARD THE NORTHERN
LEEWARD ISLANDS...
SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...17.4N 60.2W
ABOUT 200 MI...320 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/HR
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/HR
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 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...IN THIS CASE WITHIN 12
TO 18 HOURS.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 12 TO 18 HOURS.
INTERESTS ELSEWHERE IN THE NORTHERN LEEWARD ISLANDS SHOULD MONITOR
THE PROGRESS OF FIONA.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE
MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE
FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE
THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL
METEOROLOGICAL SERVICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 500 AM AST...0900 UTC...THE CENTER OF TROPICAL STORM FIONA WAS
LOCATED BY RADAR AND RECONNAISSANCE AIRCRAFT TO BE NEAR LATITUDE
17.4 NORTH...LONGITUDE 60.2 WEST. FIONA IS MOVING TOWARD THE
WEST-NORTHWEST NEAR 14 MPH...22 KM/HR. A GRADUAL TURN TOWARD THE
NORTHWEST IS EXPECTED TO OCCUR LATER TODAY AND ON THURSDAY. ON THE
FORECAST TRACK...THE CENTER OF FIONA IS SHOULD PASS OVER OR JUST
NORTH OF THE NORTHERNMOST LEEWARD ISLANDS LATER THIS MORNING AND
AFTERNOON.
MAXIMUM SUSTAINED WINDS MEASURED BY AN AIR FORCE RESERVE UNIT
RECONNAISSANCE AIRCRAFT HAVE INCREASED TO NEAR 45 MPH...75
KM/HR...WITH HIGHER GUSTS. SOME SLIGHT STRENGTHENING IS POSSIBLE
DURING THE NEXT 24 HOURS...FOLLOWED BY LITTLE CHANGE INTENSITY
AFTER THAT.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM
FROM THE CENTER.
THE MINIMUM CENTRAL PRESSURE RECENTLY MEASURED BY RECONNAISSANCE
AIRCRAFT WAS 1004 MB...29.65 INCHES.
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS COULD SPREAD OVER PORTIONS OF THE
NORTHERN LEEWARD ISLANDS BY LATER THIS MORNING AND AFTERNOON.
RAINFALL...FIONA IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF
1 TO 3 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF 5 INCHES...OVER
PORTIONS OF THE NORTHERN LEEWARD ISLANDS.
NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...800 AM AST.
NEXT COMPLETE ADVISORY...1100 AM AST.