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BULLETIN
HURRICANE LENNY ADVISORY NUMBER  20
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST THU NOV 18 1999
 
...CORRECTED WARNING SECTION...

...EXTREMELY DANGEROUS LENNY DRIFTING EASTWARD TOWARD THE NORTHERN
LEEWARD ISLANDS...

A HURRICANE WARNING REMAINS IN EFFECT FOR CULEBRA...VIEQUES...THE
U.S. AND BRITISH VIRGIN ISLANDS. A HURRICANE WARNING ALSO REMAINS IN
EFFECT FOR DUTCH ST. MAARTEN...FRENCH ST. MARTIN...ST.
BARTHELEMEY...ANGUILLA...SABA...ST. EUSTATIUS...ST. KITTS...NEVIS...
MONTSERRAT...ANTIGUA...AND BARBUDA.
 
TROPICAL STORM WARNINGS REMAIN IN EFFECT EAST OF A PONCE-MANATI
LINE...INCLUDING SAN JUAN.
 
ALL INTERESTS ALONG COASTAL SECTIONS OF PUERTO RICO WEST OF A PONCE-
MANATI LINE SHOULD EXERCISE CAUTION UNTIL WINDS AND SEAS SUBSIDE.
 
AT 5 AM AST...0900Z...THE CENTER OF HURRICANE LENNY WAS LOCATED NEAR
LATITUDE 17.8 NORTH...LONGITUDE  63.6 WEST OR ABOUT 35 MILES...60
KM...WEST-SOUTHWEST OF ST. MAARTEN.
 
LENNY IS DRIFTING EASTWARD...AND A GENERAL EAST-NORTHEAST MOTION IS
EXPECTED LATER TODAY. THIS MOTION SHOULD BRING THE EYEWALL OF THE
HURRICANE OVER THE ISLAND OF SABA SHORTLY AND OVER ST. MAARTEN AND
ANGUILLA LATER THIS MORNING.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 145 MPH...230 KM/HR...WITH HIGHER
GUSTS.  LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT
24 HOURS.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO  60 MILES... 95 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 185 MILES...295 KM.

THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT WAS 947 MB...27.86 INCHES.
 
RAINFALL TOTALS OF 10 TO 15 INCHES...WITH LOCALLY HIGHER AMOUNTS IN
MOUNTAINOUS REGIONS ARE ASSOCIATED WITH THE HURRICANE.  THESE RAINS
CAN PRODUCE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES.  SAN JUAN
DOPPLER RADAR SHOWS BANDS OF HEAVY RAINS OVER PORTIONS OF PUERTO
RICO...THE VIRGIN ISLANDS...AND THE NORTHERN LEEWARD ISLANDS.
 
STORM SURGE FLOODING OF 5 TO 8 FT ABOVE NORMAL...ACCOMPANIED BY
LARGE AND DANGEROUS BATTERING WAVES...IS EXPECTED NEAR THE CENTER
IN THE WARNED AREA.
 
REPEATING THE 5 AM AST POSITION...17.8 N... 63.6 W.  MOVEMENT
TOWARD...DRIFTING EAST.  MAXIMUM SUSTAINED WINDS...145 MPH.  MINIMUM
CENTRAL PRESSURE... 947 MB.
 
INTERMEDIATE ADVISORIES WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 7 AM AST AND 9 AM AST FOLLOWED BY THE NEXT COMPLETE
ADVISORY AT 11 AM AST.
 
BEVEN
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT1 AND WMO HEADER WTNT71 KNHC.
 
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