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TROPICAL STORM HENRI FORECAST/ADVISORY NUMBER  19
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL082021
1500 UTC FRI AUG 20 2021
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
THE STORM SURGE WATCH HAS BEEN EXTENDED SLIGHTLY WESTWARD TO
FLUSHING NEW YORK...INCLUDING ADJACENT AREAS OF WESTERN LONG
ISLAND SOUND AND THE EAST RIVER.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A STORM SURGE WATCH IS IN EFFECT FOR...
* SOUTH SHORE OF LONG ISLAND FROM EAST ROCKAWAY INLET TO MONTAUK
* NORTH SHORE OF LONG ISLAND FROM KINGS POINT TO MONTAUK
* FLUSHING NEW YORK TO SAGAMORE BEACH MASSACHUSETTS
* NANTUCKET...MARTHA'S VINEYARD...AND BLOCK ISLAND
 
A HURRICANE WATCH IS IN EFFECT FOR...
* SOUTH SHORE OF LONG ISLAND FROM FIRE ISLAND INLET TO MONTAUK
* NORTH SHORE OF LONG ISLAND FROM PORT JEFFERSON HARBOR TO MONTAUK
* NEW HAVEN CONNECTICUT TO SAGAMORE BEACH MASSACHUSETTS
* NANTUCKET...MARTHA'S VINEYARD...AND BLOCK ISLAND
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* WEST OF FIRE ISLAND INLET TO EAST ROCKAWAY INLET NEW YORK
* WEST OF PORT JEFFERSON HARBOR NEW YORK
* WEST OF NEW HAVEN CONNECTICUT
 
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 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 TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
INTERESTS ELSEWHERE IN THE NORTHEASTERN U.S. AND ATLANTIC CANADA
SHOULD MONITOR THE PROGRESS OF HENRI.  ADDITIONAL WATCHES OR
WARNINGS WILL LIKELY BE REQUIRED LATER TODAY.
 
TROPICAL STORM CENTER LOCATED NEAR 30.4N  73.7W AT 20/1500Z
POSITION ACCURATE WITHIN  25 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT   6 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  996 MB
MAX SUSTAINED WINDS  55 KT WITH GUSTS TO  65 KT.
50 KT....... 50NE  50SE   0SW   0NW.
34 KT....... 80NE  80SE  40SW  60NW.
12 FT SEAS..150NE  90SE  60SW 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 30.4N  73.7W AT 20/1500Z
AT 20/1200Z CENTER WAS LOCATED NEAR 30.1N  73.6W
 
FORECAST VALID 21/0000Z 31.5N  73.7W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 50NE  50SE   0SW   0NW.
34 KT... 90NE 100SE  70SW  50NW.
 
FORECAST VALID 21/1200Z 34.1N  72.7W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT...  0NE  25SE   0SW   0NW.
50 KT... 50NE  60SE  20SW  20NW.
34 KT...100NE 120SE  80SW  50NW.
 
FORECAST VALID 22/0000Z 37.3N  71.8W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  25SE  10SW   0NW.
50 KT... 50NE  60SE  30SW  20NW.
34 KT...100NE 130SE  95SW  60NW.
 
FORECAST VALID 22/1200Z 39.8N  71.7W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 20NE  25SE  15SW   0NW.
50 KT... 40NE  50SE  30SW  30NW.
34 KT... 80NE 100SE  80SW  60NW.
 
FORECAST VALID 23/0000Z 41.4N  71.8W...INLAND
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 20NE  40SE  20SW   0NW.
34 KT... 60NE  80SE  60SW  30NW.
 
FORECAST VALID 23/1200Z 42.4N  71.8W...INLAND
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 50NE  50SE   0SW   0NW.
 
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 24/1200Z 43.7N  69.4W...POST-TROPICAL
MAX WIND  35 KT...GUSTS  45 KT.
 
OUTLOOK VALID 25/1200Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 30.4N  73.7W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 20/1800Z
 
NEXT ADVISORY AT 20/2100Z
 
$$
FORECASTER CANGIALOSI
 
 
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