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Hurricane Irma Forecast Advisory Number 42
2017-09-09 16:57:04| National Hurricane Center (Atlantic)
Issued at 1500 UTC SAT SEP 09 2017 000 WTNT21 KNHC 091456 TCMAT1 HURRICANE IRMA FORECAST/ADVISORY NUMBER 42 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 1500 UTC SAT SEP 09 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WARNING HAS BEEN EXTENDED FROM CHASSAHOWITZKA TO THE SUWANEE RIVER. THE STORM SURGE WATCH HAS BEEN EXTENDED FROM NORTH OF THE SUWANEE RIVER TO OCHLOCKONEE RIVER AND FROM NORTH OF THE VOLUSIA/BREVARD COUNTY LINE NORTH TO ISLE OF PALMS SOUTH CAROLINA. THE HURRICANE WARNING FOR THE EAST COAST OF THE UNITED STATES HAS BEEN EXTENDED NORTHWARD TO FERNANDINA BEACH, AND THE HURRICANE WATCH HAS BEEN EXTENDED FROM NORTH OF FERNANDINA BEACH TO EDISTO BEACH. THE HURRICANE WARNING FOR THE GULF OF MEXICO COAST HAS BEEN EXTENDED TO THE AUCILLA RIVER. THE HURRICANE WATCH IS NOW IN EFFECT FROM WEST OF THE AUCILLA RIVER TO INDIAN PASS. A TROPICAL STORM WATCH HAS BEEN ISSUED FROM NORTH OF EDISTO BEACH TO THE SOUTH SANTEE RIVER. A TROPICAL STORM WATCH HAS BEEN ISSUED FROM WEST OF INDIAN PASS TO THE OKALOOSA/WALTON COUNTY LINE. THE GOVERNMENT OF CUBA HAS EXTENDED THE HURRICANE WARNING TO THE HAVANA PROVINCE. THE GOVERNMENT OF THE BAHAMAS HAS ADJUSTED THE HURRICANE WARNING TO ONLY INCLUDE ANDROS ISLAND...BIMINI AND GRAND BAHAMA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * VOLUSIA/BREVARD COUNTY LINE SOUTHWARD AROUND THE FLORIDA PENINSULA TO THE SUWANEE RIVER * FLORIDA KEYS * TAMPA BAY A STORM SURGE WATCH IS IN EFFECT FOR... * NORTH OF THE VOLUSIA/BREVARD COUNTY LINE TO THE ISLE OF PALMS SOUTH CAROLINA * NORTH OF THE SUWANEE RIVER TO OCHLOCKONEE RIVER A HURRICANE WARNING IS IN EFFECT FOR... * FERNANDINA BEACH SOUTHWARD AROUND THE FLORIDA PENINSULA TO THE AUCILLA RIVER * FLORIDA KEYS * LAKE OKEECHOBEE * FLORIDA BAY * CUBAN PROVINCES OF CAMAGUEY...CIEGO DE AVILA...SANCTI SPIRITUS... VILLA CLARA...MATANZAS AND HAVANA * ANDROS ISLAND, BIMINI AND GRAND BAHAMA A HURRICANE WATCH IS IN EFFECT FOR... * NORTH OF FERNANDINA BEACH TO EDISTO BEACH * WEST OF THE AUCILLA RIVER TO INDIAN PASS * CUBAN PROVINCES OF HOLGUIN AND LAS TUNAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF HOLGUIN, LAS TUNAS A TROPICAL STORM WATCH IS IN EFFECT FOR... * NORTH OF EDISTO BEACH TO SOUTH SANTEE RIVER * WEST OF INDIAN PASS TO THE OKALOOSA/WALTON COUNTY LINE 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 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 WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. 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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA... GENERALLY WITHIN 48 HOURS. INTERESTS ELSEWHERE IN CUBA AND THE SOUTHEASTERN UNITED STATES SHOULD MONITOR THE PROGRESS OF IRMA. HURRICANE CENTER LOCATED NEAR 22.8N 79.8W AT 09/1500Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 941 MB EYE DIAMETER 10 NM MAX SUSTAINED WINDS 110 KT WITH GUSTS TO 135 KT. 64 KT....... 60NE 60SE 30SW 60NW. 50 KT.......100NE 90SE 50SW 80NW. 34 KT.......160NE 160SE 120SW 170NW. 12 FT SEAS..420NE 30SE 30SW 120NW. 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 22.8N 79.8W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 22.7N 79.3W FORECAST VALID 10/0000Z 23.4N 80.7W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...100NE 90SE 50SW 80NW. 34 KT...160NE 160SE 120SW 170NW. FORECAST VALID 10/1200Z 24.5N 81.6W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...110NE 100SE 60SW 90NW. 34 KT...170NE 160SE 120SW 170NW. FORECAST VALID 11/0000Z 26.4N 82.1W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 70NE 70SE 40SW 60NW. 50 KT...120NE 120SE 70SW 100NW. 34 KT...220NE 180SE 140SW 200NW. FORECAST VALID 11/1200Z 29.0N 82.8W MAX WIND 100 KT...GUSTS 120 KT. 50 KT...130NE 120SE 70SW 100NW. 34 KT...250NE 220SE 150SW 240NW. FORECAST VALID 12/1200Z 34.5N 86.0W...POST-TROP/INLAND MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 13/1200Z 36.0N 89.0W...POST-TROP/INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 14/1200Z 37.0N 88.5W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.8N 79.8W NEXT ADVISORY AT 09/2100Z $$ FORECASTER AVILA
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