Home Tropical Storm Henri Forecast Advisory Number 20
 

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Tropical Storm Henri Forecast Advisory Number 20

2021-08-20 22:40:44| National Hurricane Center (Atlantic)

Issued at 2100 UTC FRI AUG 20 2021 000 WTNT23 KNHC 202040 TCMAT3 TROPICAL STORM HENRI FORECAST/ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082021 2100 UTC FRI AUG 20 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WARNING IS IN EFFECT FOR THE SOUTH SHORE OF LONG ISLAND FROM MASTIC BEACH TO MONTAUK POINT...THE NORTH SHORE OF LONG ISLAND FROM OYSTER BAY TO MONTAUK POINT...FROM GREENWICH CONNECTICUT TO CHATHAM MASSACHUSETTS...INCLUDING NANTUCKET... MARTHA'S VINEYARD...AND BLOCK ISLAND. A HURRICANE WARNING IS IN EFFECT FOR THE SOUTH SHORE OF LONG ISLAND FROM FIRE ISLAND INLET TO MONTAUK POINT...FOR THE NORTH SHORE OF LONG ISLAND FROM PORT JEFFERSON HARBOR TO MONTAUK POINT...AND FROM NEW HAVEN CONNECTICUT...TO WEST OF WATCH HILL RHODE ISLAND. A TROPICAL STORM WARNING IS IN EFFECT FROM WEST OF PORT JEFFERSON HARBOR TO WEST OF NEW HAVEN CONNECTICUT...AND FOR THE SOUTH SHORE OF LONG ISLAND FROM WEST OF FIRE ISLAND INLET TO EAST ROCKAWAY INLET. A TROPICAL STORM WATCH IN EFFECT FROM MANASQUAN INLET NEW JERSEY TO WEST OF EAST ROCKAWAY INLET NEW YORK...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 * NORTH SHORE OF LONG ISLAND FROM OYSTER BAY TO MONTAUK POINT * GREENWICH CONNECTICUT TO CHATHAM MASSACHUSETTS * NANTUCKET...MARTHA'S VINEYARD...AND BLOCK ISLAND A STORM SURGE WATCH IS IN EFFECT FOR... * SOUTH SHORE OF LONG ISLAND FROM WEST OF MASTIC BEACH TO EAST ROCKAWAY INLET * NORTH SHORE OF LONG ISLAND FROM WEST OF OYSTER BAY TO FLUSHING * FLUSHING NEW YORK TO WEST OF GREENWICH CONNECTICUT * 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 A TROPICAL STORM WATCH IS IN EFFECT FOR... * MANASQUAN INLET NEW JERSEY TO WEST OF EAST ROCKAWAY INLET NEW YORK...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. 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 TONIGHT OR SATURDAY. TROPICAL STORM CENTER LOCATED NEAR 31.2N 73.9W AT 20/2100Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT 6 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 31.2N 73.9W AT 20/2100Z AT 20/1800Z CENTER WAS LOCATED NEAR 30.8N 73.8W FORECAST VALID 21/0600Z 32.8N 73.3W 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 21/1800Z 35.8N 72.3W 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 22/0600Z 38.9N 71.9W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 25SE 10SW 0NW. 50 KT... 50NE 60SE 30SW 20NW. 34 KT...100NE 130SE 90SW 60NW. FORECAST VALID 22/1800Z 40.8N 72.4W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 20NE 25SE 0SW 0NW. 50 KT... 40NE 50SE 30SW 30NW. 34 KT... 80NE 100SE 70SW 60NW. FORECAST VALID 23/0600Z 42.0N 72.8W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 80SE 50SW 30NW. FORECAST VALID 23/1800Z 42.9N 72.6W...POST-TROPICAL 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 24/1800Z 43.8N 68.9W...POST-TROPICAL MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 25/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 31.2N 73.9W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 21/0000Z NEXT ADVISORY AT 21/0300Z $$ FORECASTER CANGIALOSI

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