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Tropical Storm Henri Forecast Advisory Number 21
2021-08-21 04:59:16| National Hurricane Center (Atlantic)
Issued at 0300 UTC SAT AUG 21 2021 000 WTNT23 KNHC 210259 TCMAT3 TROPICAL STORM HENRI FORECAST/ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082021 0300 UTC SAT AUG 21 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WATCH HAS BEEN UPGRADED TO A WARNING BETWEEN GREENWICH CT TO FLUSHING NY AND FLUSHING TO OYSTER BAY NY. A TROPICAL STORM WARNING IS NOW IN EFFECT FROM WATCH HILL RHODE ISLAND EAST TO WOODS HOLE MASSACHUSETTS INCLUDING BLOCK ISLAND AND MARTHA'S VINEYARD. A TROPICAL STORM WARNING IS ALSO IN EFFECT WEST OF EAST ROCKAWAY INLET NEW YORK TO MANASQUAN INLET NEW JERSEY...INCLUDING NEW YORK CITY. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * SOUTH SHORE OF LONG ISLAND FROM MASTIC BEACH TO MONTAUK POINT NEW YORK * NORTH SHORE OF LONG ISLAND FROM MONTAUK POINT TO FLUSHING NEW YORK * FLUSHING NEW YORK TO CHATHAM MASSACHUSETTS * NANTUCKET...MARTHA'S VINEYARD...AND BLOCK ISLAND A STORM SURGE WATCH IS IN EFFECT FOR... * EAST ROCKAWAY INLET TO MASTIC NEW YORK * NORTH OF CHATHAM MASSACHUSETTS TO SAGAMORE BEACH MASSACHUSETTS * CAPE COD BAY A HURRICANE WARNING IS IN EFFECT FOR... * SOUTH SHORE OF LONG ISLAND FROM FIRE ISLAND INLET TO MONTAUK POINT * NORTH SHORE OF LONG ISLAND FROM PORT JEFFERSON HARBOR TO MONTAUK POINT * NEW HAVEN CONNECTICUT TO WEST OF WATCH HILL RHODE ISLAND A HURRICANE WATCH IS IN EFFECT FOR... * WATCH HILL RHODE ISLAND TO SAGAMORE BEACH MASSACHUSETTS * NANTUCKET...MARTHA'S VINEYARD...AND BLOCK ISLAND A TROPICAL STORM WARNING IS IN EFFECT FOR... * PORT JEFFERSON HARBOR TO WEST OF NEW HAVEN CONNECTICUT * SOUTH SHORE OF LONG ISLAND FROM WEST OF FIRE ISLAND INLET TO EAST ROCKAWAY INLET * WATCH HILL RHODE ISLAND TO WOODS HOLE MASSACHUSETTS INCLUDING BLOCK ISLAND AND MARTHA'S VINEYARD. * COASTAL NEW YORK AND NEW JERSEY WEST OF EAST ROCKAWAY INLET TO MANASQUAN INLET...INCLUDING NEW YORK CITY A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...DURING THE NEXT 36 HOURS IN THE INDICATED LOCATIONS. FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT HURRICANES.GOV. THIS IS A LIFE-THREATENING SITUATION. PERSONS LOCATED WITHIN THESE AREAS SHOULD TAKE ALL NECESSARY ACTIONS TO PROTECT LIFE AND PROPERTY FROM RISING WATER AND THE POTENTIAL FOR OTHER DANGEROUS CONDITIONS. PROMPTLY FOLLOW EVACUATION AND OTHER INSTRUCTIONS FROM LOCAL OFFICIALS. 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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. 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. INTERESTS ELSEWHERE IN THE NORTHEASTERN U.S. AND ATLANTIC CANADA SHOULD MONITOR THE PROGRESS OF HENRI. ADDITIONAL WATCHES OR WARNINGS MAY BE REQUIRED ON SATURDAY SATURDAY. TROPICAL STORM CENTER LOCATED NEAR 32.3N 73.5W AT 21/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTH OR 10 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 994 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 50NE 50SE 0SW 0NW. 34 KT....... 90NE 100SE 50SW 70NW. 12 FT SEAS..180NE 120SE 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 32.3N 73.5W AT 21/0300Z AT 21/0000Z CENTER WAS LOCATED NEAR 31.6N 73.7W FORECAST VALID 21/1200Z 34.3N 72.8W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 20NE 25SE 0SW 0NW. 50 KT... 50NE 50SE 0SW 0NW. 34 KT...100NE 110SE 90SW 50NW. FORECAST VALID 22/0000Z 37.7N 72.1W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 25SE 0SW 0NW. 50 KT... 50NE 60SE 20SW 20NW. 34 KT...110NE 130SE 100SW 50NW. FORECAST VALID 22/1200Z 40.2N 72.6W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 25SE 10SW 0NW. 50 KT... 50NE 60SE 30SW 20NW. 34 KT...100NE 130SE 90SW 60NW. FORECAST VALID 23/0000Z 41.4N 73.4W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 20NE 20SE 0SW 0NW. 34 KT... 70NE 100SE 70SW 60NW. FORECAST VALID 23/1200Z 42.2N 73.2W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 80SE 30SW 0NW. FORECAST VALID 24/0000Z 42.7N 72.3W...POST-TROP/INLAND MAX WIND 30 KT...GUSTS 40 KT. 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 25/0000Z 43.5N 67.0W...POST-TROPICAL MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 26/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 32.3N 73.5W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 21/0600Z NEXT ADVISORY AT 21/0900Z $$ FORECASTER BEVEN
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