HURRICANE BERTHA ADVISORY NUMBER 21
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL022008
500 AM AST TUE JUL 08 2008
...POWERFUL BERTHA MAINTAINING MAJOR HURRICANE STATUS...
AT 500 AM AST...0900Z...THE CENTER OF HURRICANE BERTHA WAS LOCATED
NEAR LATITUDE 21.4 NORTH...LONGITUDE 53.3 WEST OR ABOUT 675 MILES...
1085 KM...EAST-NORTHEAST OF THE NORTHERN LEEWARD ISLANDS AND ABOUT
1035 MILES...1660 KM...SOUTHEAST OF BERMUDA.
BERTHA IS MOVING TOWARD THE NORTHWEST NEAR 10 MPH...17 KM/HR...AND
THIS GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 48 HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 120 MPH...195 KM/HR...WITH HIGHER
GUSTS. BERTHA IS A CATEGORY THREE HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE SCALE. SOME FLUCTUATIONS IN INTENSITY MAY OCCUR TODAY...
BUT A GRADUAL WEAKENING TREND IS EXPECTED TO BEGIN WITHIN THE NEXT
COUPLE OF DAYS.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES...45 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 115
MILES...185 KM.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 955 MB...28.20 INCHES.
REPEATING THE 500 AM AST POSITION...21.4 N...53.3 W. MOVEMENT
TOWARD...NORTHWEST NEAR 10 MPH. MAXIMUM SUSTAINED WINDS...120 MPH.
MINIMUM CENTRAL PRESSURE...955 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
1100 AM AST.
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