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Hurricane Irma Forecast Advisory Number 41
2017-09-09 11:00:03| National Hurricane Center (Atlantic)
Issued at 0900 UTC SAT SEP 09 2017 000 WTNT21 KNHC 090859 TCMAT1 HURRICANE IRMA FORECAST/ADVISORY NUMBER 41 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 0900 UTC SAT SEP 09 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE HURRICANE WARNING AND THE STORM SURGE WARNING ARE EXTENDED NORTHWARD ALONG THE FLORIDA WEST COAST FROM ANCLOTE RIVER TO CHASSAHOWITZKA. THE HURRICANE WARNING IS EXTENDED NORTHWARD ALONG THE FLORIDA EAST COAST TO THE FLAGLER/VOLUSIA COUNTY LINE. A TROPICAL STORM WATCH HAS BEEN ISSUED NORTH OF FERNANDINA BEACH TO ALTAMAHA SOUND GEORGIA. ADDITIONAL WATCHES AND WARNINGS MAY BE REQUIRED FOR PORTIONS OF THE COASTS OF GEORGIA AND SOUTH CAROLINA...AS WELL AS PORTIONS OF THE FLORIDA GULF COAST LATER TODAY. 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 CHASSAHOWITZKA * FLORIDA KEYS * TAMPA BAY A STORM SURGE WATCH IS IN EFFECT FOR... * NORTH OF THE VOLUSIA/BREVARD COUNTY LINE TO THE FLAGLER/VOLUSIA COUNTY LINE * NORTH OF CHASSAHOWITZKA TO SUWANNEE RIVER A HURRICANE WARNING IS IN EFFECT FOR... * FLAGLER/VOLUSIA COUNTY LINE SOUTHWARD AROUND THE FLORIDA PENINSULA TO CHASSAHOWITZKA * FLORIDA KEYS * LAKE OKEECHOBEE * FLORIDA BAY * CUBAN PROVINCES OF CAMAGUEY...CIEGO DE AVILA...SANCTI SPIRITUS... VILLA CLARA...AND MATANZAS * CENTRAL BAHAMAS AND RAGGED ISLAND * NORTHWESTERN BAHAMAS A HURRICANE WATCH IS IN EFFECT FOR... * NORTH OF THE FLAGLER/VOLUSIA COUNTY LINE TO FERNANDINA BEACH * NORTH AND WEST OF CHASSAHOWITZKA TO INDIAN PASS * CUBAN PROVINCES OF HOLGUIN AND LAS TUNAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF HOLGUIN...LAS TUNAS...LA HABANA...AND CIUDAD DE LA HABANA A TROPICAL STORM WATCH IS IN EFFECT FOR... * NORTH OF FERNANDINA BEACH TO ALTAMAHA SOUND 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...FLORIDA...AND THE SOUTHEASTERN UNITED STATES SHOULD MONITOR THE PROGRESS OF IRMA. HURRICANE CENTER LOCATED NEAR 22.5N 78.8W AT 09/0900Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 930 MB EYE DIAMETER 30 NM MAX SUSTAINED WINDS 135 KT WITH GUSTS TO 165 KT. 64 KT....... 60NE 60SE 30SW 60NW. 50 KT.......100NE 90SE 50SW 80NW. 34 KT.......160NE 160SE 120SW 170NW. 12 FT SEAS..480NE 30SE 30SW 90NW. 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 22.5N 78.8W AT 09/0900Z AT 09/0600Z CENTER WAS LOCATED NEAR 22.3N 78.3W FORECAST VALID 09/1800Z 22.9N 80.0W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...100NE 90SE 50SW 80NW. 34 KT...160NE 160SE 120SW 170NW. FORECAST VALID 10/0600Z 23.8N 81.1W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...110NE 100SE 60SW 90NW. 34 KT...170NE 160SE 120SW 170NW. FORECAST VALID 10/1800Z 25.4N 81.8W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 70NE 70SE 40SW 60NW. 50 KT...120NE 120SE 70SW 100NW. 34 KT...220NE 180SE 140SW 200NW. FORECAST VALID 11/0600Z 27.7N 82.4W...INLAND MAX WIND 105 KT...GUSTS 130 KT. 50 KT...130NE 120SE 90SW 110NW. 34 KT...250NE 220SE 150SW 240NW. FORECAST VALID 12/0600Z 32.5N 84.5W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT...120NE 180SE 60SW 60NW. 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 13/0600Z 35.5N 88.0W...INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 14/0600Z 36.0N 87.5W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.5N 78.8W NEXT ADVISORY AT 09/1500Z $$ FORECASTER BEVEN
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