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HURRICANE ISAIAS FORECAST/ADVISORY NUMBER  15
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092020
2100 UTC FRI JUL 31 2020
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
A HURRICANE WARNING IS IN EFFECT FOR THE EAST COAST OF FLORIDA FROM
BOCA RATON TO THE VOLUSIA/BREVARD COUNTY LINE.
 
A HURRICANE WATCH IS IN EFFECT FROM THE VOLUSIA/BREVARD COUNTY LINE
TO THE FLAGLER/VOLUSIA COUNTY LINE AND FROM SOUTH OF BOCA RATON TO
HALLENDALE BEACH.
 
A STORM SURGE WATCH IS IN EFFECT FOR THE EAST COAST OF FLORIDA FROM
JUPITER INLET TO PONTE VEDRE BEACH.
 
A TROPICAL STORM WATCH IS IN EFFECT FROM THE FLAGLER/VOLUSIA COUNTY
LINE TO PONTE VEDRE BEACH.
 
A TROPICAL STORM WARNING IS IN EFFECT FOR LAKE OKEECHOBEE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A HURRICANE WARNING IS IN EFFECT FOR...
* BOCA RATON TO THE VOLUSIA/BREVARD COUNTY LINE FLORIDA
* NORTHWESTERN BAHAMAS
* SOUTHEASTERN BAHAMAS
* CENTRAL BAHAMAS
 
A HURRICANE WATCH IS IN EFFECT FOR...
* HALLENDALE BEACH TO SOUTH OF BOCA RATON FLORIDA
* VOLUSIA-BREVARD COUNTY LINE TO THE FLAGLER/VOLUSIA COUNTY LINE
 
A STORM SURGE WATCH IS IN EFFECT FOR...
* JUPITER INLET TO PONTE VEDRE BEACH FLORIDA
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* TURKS AND CAICOS ISLANDS
* NORTH OF OCEAN REEF TO SOUTH OF BOCA RATON FLORIDA
* LAKE OKEECHOBEE
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* FLAGLER/VOLUSIA COUNTY LINE TO PONTE VEDRE BEACH FLORIDA
 
INTERESTS ELSEWHERE ALONG THE SOUTHEAST COAST OF THE UNITED STATES
SHOULD MONITOR THE PROGRESS OF ISAIAS.  ADDITIONAL WATCHES OR
WARNINGS MAY BE REQUIRED LATER TONIGHT AND SATURDAY.
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF
TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS.  PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
 
A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA.  A WATCH IS TYPICALLY ISSUED 48 HOURS
BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE
WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR
DANGEROUS.
 
A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE-
THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE
COASTLINE...IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS.
FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER
SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT
HURRICANES.GOV.
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
HURRICANE CENTER LOCATED NEAR 22.6N  75.7W AT 31/2100Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT  13 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  991 MB
MAX SUSTAINED WINDS  65 KT WITH GUSTS TO  80 KT.
64 KT....... 30NE  20SE   0SW  20NW.
50 KT....... 80NE  30SE   0SW  50NW.
34 KT.......150NE  70SE  30SW 130NW.
12 FT SEAS..300NE 150SE  90SW 300NW.
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 22.6N  75.7W AT 31/2100Z
AT 31/1800Z CENTER WAS LOCATED NEAR 22.2N  75.2W
 
FORECAST VALID 01/0600Z 23.9N  77.2W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 30NE  20SE  10SW  20NW.
50 KT... 70NE  40SE  20SW  50NW.
34 KT...140NE  90SE  40SW 120NW.
 
FORECAST VALID 01/1800Z 25.4N  78.8W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  20SE  10SW  20NW.
50 KT... 60NE  40SE  20SW  40NW.
34 KT...120NE  90SE  40SW 100NW.
 
FORECAST VALID 02/0600Z 26.8N  79.9W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 20NE  15SE  10SW  20NW.
50 KT... 50NE  30SE  20SW  40NW.
34 KT...120NE  90SE  40SW  80NW.
 
FORECAST VALID 02/1800Z 28.3N  80.4W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 20NE  15SE  10SW  20NW.
50 KT... 50NE  30SE  20SW  40NW.
34 KT...110NE  90SE  40SW  70NW.
 
FORECAST VALID 03/0600Z 30.0N  80.4W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 40NE  30SE  20SW  40NW.
34 KT...110NE  90SE  50SW  70NW.
 
FORECAST VALID 03/1800Z 32.5N  79.4W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 40NE  30SE  20SW  30NW.
34 KT...110NE  90SE  50SW  60NW.
 
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 04/1800Z 39.0N  74.5W
MAX WIND  55 KT...GUSTS  65 KT.
 
OUTLOOK VALID 05/1800Z 45.4N  65.9W...POST-TROP/EXTRATROP
MAX WIND  50 KT...GUSTS  60 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.6N  75.7W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 01/0000Z
 
NEXT ADVISORY AT 01/0300Z
 
$$
FORECASTER STEWART
 
 
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