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HURRICANE LENNY INTERMEDIATE ADVISORY NUMBER  19A
NATIONAL WEATHER SERVICE MIAMI FL
1 AM AST THU NOV 18 1999

...CORRECTED FOR POSITION IN REPEAT SECTION AND FRENCH ST. MARTIN...

...EXTREMELY DANGEROUS HURRICANE LENNY LASHING THE NORTHEASTERN
CARIBBEAN...

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 1 AM AST...0500Z...THE EYE OF HURRICANE LENNY WAS LOCATED NEAR
LATITUDE 17.7 NORTH...LONGITUDE  64.0 WEST OR ABOUT 65 MILES...
100 KM...WEST-SOUTHWEST OF ST. MAARTEN IN THE NORTHEAST CARIBBEAN.
 
LENNY HAS MOVED LITTLE THE LAST HOUR HOWEVER...A GENERAL NORTHEAST
MOTION IS EXPECTED TO RESUME THURSDAY. THIS TRACK WILL BRING THE
CORE OF EXTREMELY DANGEROUS HURRICANE LENNY ACROSS THE WARNING AREA
TONIGHT.  

MAXIMUM SUSTAINED WINDS ARE NOW NEAR 145 MPH...230 KM/HR...WITH
HIGHER GUSTS ESPECIALLY OVER UNPROTECTED SOUTH AND WEST FACING
HARBORS.  STRONGER SUSTAINED WINDS COULD BE EXPERIENCED IN
MOUNTAINOUS AREAS. LENNY IS STILL A DANGEROUS CATEGORY 4 HURRICANE
ON THE SAFFIR/SIMPSON HURRICANE SCALE. SOME FLUCTUATIONS IN
INTENSITY ARE EXPECTED 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.  RECENT OBSERVATIONS RELAYED FROM AMATEUR 
RADIO OPERATORS TO THE NATIONAL HURRICANE CENTER INCLUDE REPORTS 
OF ESTIMATED SUSTAINED WINDS OF 80 MPH...130 KPH...ON FRENCH ST. 
MARTIN AND A GUST TO TO 101 MPH...163 KPH...ON SABA.

THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE
HURRICANE HUNTER AIRCRAFT WAS 944 MB...27.88 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 HEAVY RAINS CONTINUING TO SPREAD 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 1 AM AST POSITION...17.7 N... 64.0 W.  MOVEMENT...
NEARLY STATIONARY.  MAXIMUM SUSTAINED WINDS...145 MPH.  MINIMUM
CENTRAL PRESSURE... 944 MB.
 
THE NEXT INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER 3 AM AST FOLLOWED BY THE NEXT COMPLETE ADVISORY 
AT 5 AM AST.

GUINEY
 
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