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TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER   4
NATIONAL WEATHER SERVICE MIAMI FL   AL1300
0900Z FRI SEP 22 2000
 
TROPICAL STORM CENTER LOCATED NEAR 12.7N  28.2W AT 22/0900Z
POSITION ACCURATE WITHIN  45 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 17 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 70NE  55SE  55SW  70NW.
12 FT SEAS.. 70NE  55SE  55SW  70NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 12.7N  28.2W AT 22/0900Z
AT 22/0600Z CENTER WAS LOCATED NEAR 12.6N  27.4W
 
FORECAST VALID 22/1800Z 13.2N  30.5W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 25NE  25SE  25SW  25NW.
34 KT... 80NE  65SE  65SW  80NW.
 
FORECAST VALID 23/0600Z 13.6N  33.2W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 25NE  25SE  25SW  25NW.
34 KT... 85NE  70SE  70SW  85NW.
 
FORECAST VALID 23/1800Z 14.1N  36.2W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 20NE  20SE  20SW  20NW.
50 KT... 35NE  35SE  35SW  35NW.
34 KT... 90NE  70SE  70SW  90NW.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.7N  28.2W
 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
 
OUTLOOK VALID 24/0600Z 14.4N  38.5W
MAX WIND  75 KT...GUSTS  90 KT.
50 KT... 45NE  35SE  35SW  45NW.
 
OUTLOOK VALID 25/0600Z 15.0N  43.5W
MAX WIND  85 KT...GUSTS 105 KT.
50 KT... 55NE  45SE  45SW  55NW.
 
NEXT ADVISORY AT 22/1500Z
 
FORECASTER STEWART
  
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