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HURRICANE GERT FORECAST/ADVISORY NUMBER  42
NATIONAL WEATHER SERVICE MIAMI FL   AL0999
2100Z TUE SEP 21 1999
 
AT 5 PM AST...2100Z...THE HURRICANE WARNING FOR BERMUDA IS
DOWNGRADED TO A TROPICAL STORM WARNING.  THIS TROPICAL STORM WARNING
WILL BE DISCONTINUED AT 7 PM AST...2300Z.
 
HURRICANE CENTER LOCATED NEAR 33.4N  61.9W AT 21/2100Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE NORTH NORTHEAST OR  20 DEGREES AT 17 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  960 MB
EYE DIAMETER  30 NM
MAX SUSTAINED WINDS  90 KT WITH GUSTS TO 110 KT
64 KT.......120NE  90SE  50SW  90NW
50 KT.......180NE 180SE 120SW 120NW
34 KT.......225NE 225SE 125SW 160NW
12 FT SEAS..900NE 600SE 600SW 600NW
ALL QUADRANT RADII IN NAUTICAL MILES
 
REPEAT...CENTER LOCATED NEAR 33.4N  61.9W AT 21/2100Z
AT 21/1800Z CENTER WAS LOCATED NEAR 32.7N  62.1W
 
FORECAST VALID 22/0600Z 36.0N  60.7W
MAX WIND  85 KT...GUSTS 105 KT
64 KT...120NE  90SE  50SW  90NW
50 KT...180NE 180SE 120SW 120NW
34 KT...225NE 225SE 125SW 160NW
 
FORECAST VALID 22/1800Z 40.0N  58.5W
MAX WIND  80 KT...GUSTS  95 KT
64 KT...120NE  90SE  50SW  90NW
50 KT...180NE 180SE 120SW 120NW
34 KT...225NE 225SE 125SW 160NW
 
FORECAST VALID 23/0600Z 44.0N  55.5W
MAX WIND  70 KT...GUSTS  85 KT
64 KT...120NE 120SE  75SW  75NW
50 KT...150NE 150SE 100SW 100NW
34 KT...200NE 200SE 125SW 125NW
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 33.4N  61.9W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 23/1800Z 48.0N  52.0W...EXTRATROPICAL
MAX WIND  60 KT...GUSTS  75 KT
50 KT...120NE 120SE  75SW  75NW
 
OUTLOOK VALID 24/1800Z 57.0N  44.0W...EXTRATROPICAL
MAX WIND  50 KT...GUSTS  60 KT
50 KT...120NE 120SE  75SW  75NW
 
NEXT ADVISORY AT 22/0300Z
 
PASCH
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
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