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BULLETIN
TROPICAL STORM HELENE ADVISORY NUMBER 13
NATIONAL WEATHER SERVICE MIAMI FL
10 AM CDT THU SEP 21 2000
...TROPICAL DEPRESSION TWELVE BECOMES TROPICAL STORM
HELENE...TROPICAL STORM WARNINGS ISSUED...
AT 10 AM CDT...1500Z...A TROPICAL STORM WARNING IS 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 10 AM CDT...1500Z...THE CENTER OF TROPICAL STORM HELENE
WAS LOCATED NEAR LATITUDE 26.6 NORTH...LONGITUDE 87.2 WEST
OR ABOUT 265 MILES SOUTH OF PENSACOLA FLORIDA.
HELENE IS MOVING TOWARD THE NORTH-NORTHWEST NEAR 13 MPH...AND A TURN
TO THE NORTH IS EXPECTED TODAY. THIS MOTION COULD BRING THE CENTER
NEAR THE NORTHERN GULF COAST TONIGHT OR FRIDAY MORNING.
MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH...WITH HIGHER GUSTS. SOME
FURTHER STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS.
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 1006 MB...29.71 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 10 AM CDT POSITION...26.6 N... 87.2 W. MOVEMENT
TOWARD...NORTH-NORTHWEST NEAR 13 MPH. MAXIMUM SUSTAINED
WINDS... 50 MPH. MINIMUM CENTRAL PRESSURE...1006 MB.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 1 PM CDT FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 4 PM
CDT.
FORECASTER BEVEN
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