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TROPICAL STORM HELENE INTERMEDIATE ADVISORY NUMBER  13A
NATIONAL WEATHER SERVICE MIAMI FL
1 PM CDT THU SEP 21 2000
 
...HELENE TURNING NORTHWARD AND STRENGTHENING...

A TROPICAL STORM WARNING REMAINS IN EFFECT FROM THE MOUTH OF THE
PEARL RIVER...ON THE LOUISIANA-MISSISSIPPI BORDER...EASTWARD TO THE
MOUTH OF THE AUCILLA RIVER FLORIDA.  SMALL CRAFT SHOULD REMAIN IN
PORT FROM THE MOUTH OF THE PEARL RIVER TO THE MOUTH OF THE
MISSISSIPPI RIVER.
 
AT 1 PM CDT...1800Z...THE CENTER OF TROPICAL STORM HELENE
WAS LOCATED NEAR LATITUDE 27.1 NORTH...LONGITUDE  87.2 WEST
OR ABOUT 230 MILES SOUTH OF PENSACOLA FLORIDA.
 
HELENE IS NOW MOVING TOWARD THE NORTH NEAR 13 MPH...AND THIS MOTION
IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS.  THIS MOTION COULD
BRING THE CENTER NEAR THE NORTHERN GULF COAST TONIGHT OR FRIDAY
MORNING.
 
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 65 MPH...WITH HIGHER
GUSTS.  WHILE UPPER LEVEL WINDS DO NOT FAVOR SIGNIFICANT
STRENGTHENING...ANY FURTHER INCREASE WOULD BRING HELENE CLOSE TO
HURRICANE STRENGTH.  THEREFORE...A HURRICANE WATCH OR WARNING MAY BE
REQUIRED FOR PORTIONS OF THE NORTHEASTERN GULF COAST LATER TODAY.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO  85 MILES MAINLY TO
THE EAST OF THE CENTER.
 
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT IS 999 MB...29.50 INCHES.

STORM SURGE FLOODING OF 3 TO 5 FT ABOVE NORMAL TIDE LEVELS...WITH
HIGHER LEVELS IN BAYS...ACCOMPANIED BY BATTERING WAVES...IS LIKELY
NEAR AND TO THE EAST OF WHERE THE CENTER MAKES LANDFALL.

RAINFALL AMOUNTS OF 5 TO 8 INCHES...WITH LOCALLY HEAVIER
AMOUNTS...ARE LIKELY ALONG THE PATH OF HELENE.
 
REPEATING THE 1 PM CDT POSITION...27.1 N... 87.2 W.  MOVEMENT
TOWARD...NORTH NEAR 13 MPH.  MAXIMUM SUSTAINED WINDS... 65 MPH. 
MINIMUM CENTRAL PRESSURE...999 MB.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.

THE NEXT  ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 4 PM CDT.
 
FORECASTER BEVEN
 
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