ZCZC MIATCMAT4 ALL
TTAA00 KNHC DDHHMM
 
TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER  22
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092018
0300 UTC THU SEP 13 2018
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT... 
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* MARTINIQUE
* DOMINICA
* GUADELOUPE
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* ANTIGUA
* MONTSERRAT
* ST. KITTS AND NEVIS
* SABA AND ST. EUSTATIUS
* ST. MARTIN AND ST. MAARTEN
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA... IN THIS CASE WITHIN 24
HOURS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA... IN THIS CASE WITHIN 24 HOURS.
 
INTERESTS ELSEWHERE IN THE LEEWARD ISLANDS SHOULD MONITOR THE
PROGRESS OF ISAAC.
 
TROPICAL STORM CENTER LOCATED NEAR 15.3N  58.0W AT 13/0300Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT  17 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT.......150NE   0SE   0SW 120NW.
12 FT SEAS..150NE  30SE  30SW 150NW.
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 15.3N  58.0W AT 13/0300Z
AT 13/0000Z CENTER WAS LOCATED NEAR 15.3N  57.2W
 
FORECAST VALID 13/1200Z 15.5N  60.4W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT...120NE   0SE   0SW  90NW.
 
FORECAST VALID 14/0000Z 15.6N  63.4W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 80NE   0SE   0SW  60NW.
 
FORECAST VALID 14/1200Z 15.7N  66.4W
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 70NE   0SE   0SW  50NW.
 
FORECAST VALID 15/0000Z 15.7N  69.2W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 70NE   0SE   0SW  50NW.
 
FORECAST VALID 16/0000Z 15.6N  73.9W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 70NE   0SE   0SW  50NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 17/0000Z 16.5N  77.5W
MAX WIND  35 KT...GUSTS  45 KT.
 
OUTLOOK VALID 18/0000Z 17.5N  82.0W
MAX WIND  35 KT...GUSTS  45 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.3N  58.0W
 
NEXT ADVISORY AT 13/0900Z
 
$$
FORECASTER BERG
 
 
NNNN