000 WTNT21 KNHC 082055 TCMAT1 HURRICANE IRMA FORECAST/ADVISORY NUMBER 39 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 2100 UTC FRI SEP 08 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE HURRICANE WARNING HAS BEEN EXTENDED NORTHWARD FOR EAST COAST OF FLORIDA TO SEBASTIAN INLET... AND ALONG THE WEST COAST OF THE PENINSULA NORTHWARD TO ANNA MARIA ISLAND. THE HURRICANE WATCH HAS BEEN EXTENDED NORTHWARD ALONG THE WEST COAST OF FLORIDA TO SUWANNEE RIVER. A STORM SURGE WATCH HAS BEEN ISSUED NORTH OF VENICE TO THE ANCLOTE RIVER... INCLUDING TAMPA BAY... AND FROM PONCE INLET TO THE FLAGLER/ VOLUSIA COUNTY LINE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * SEBASTIAN INLET SOUTHWARD AROUND THE FLORIDA PENINSULA TO VENICE * FLORIDA KEYS A STORM SURGE WATCH IS IN EFFECT FOR... * NORTH OF SEBASTIAN INLET TO THE FLAGLER/VOLUSIA COUNTY LINE * NORTH OF VENICE TO ANCLOTE RIVER * TAMPA BAY A HURRICANE WARNING IS IN EFFECT FOR... * SEBASTIAN INLET SOUTHWARD AROUND THE FLORIDA PENINSULA TO ANNA MARIA ISLAND * FLORIDA KEYS * LAKE OKEECHOBEE * FLORIDA BAY * SOUTHEASTERN BAHAMAS * CUBAN PROVINCES OF CAMAGUEY... CIEGO DE AVILA... SANCTI SPIRITUS... AND VILLA CLARA * CENTRAL BAHAMAS * NORTHWESTERN BAHAMAS A HURRICANE WATCH IS IN EFFECT FOR... * NORTH OF SEBASTIAN INLET TO THE FLAGLER/VOLUSIA COUNTY LINE * NORTH OF ANNA MARIA ISLAND TO THE SUWANNEE RIVER * CUBAN PROVINCES OF GUANTANAMO... HOLGUIN... LAS TUNAS AND MATANZAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF GUANTANAMO... HOLGUIN... AND LAS TUNAS 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. INTERESTS ELSEWHERE IN CUBA... FLORIDA... AND THE SOUTHEASTERN UNITED STATES SHOULD MONITOR THE PROGRESS OF IRMA. HURRICANE CENTER LOCATED NEAR 22.1N 76.5W AT 08/2100Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 925 MB EYE DIAMETER 40 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 120SE 80SW 150NW. 12 FT SEAS..510NE 180SE 60SW 480NW. 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 22.1N 76.5W AT 08/2100Z AT 08/1800Z CENTER WAS LOCATED NEAR 22.0N 76.0W FORECAST VALID 09/0600Z 22.4N 78.2W MAX WIND 135 KT...GUSTS 165 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...100NE 90SE 50SW 80NW. 34 KT...170NE 120SE 90SW 150NW. FORECAST VALID 09/1800Z 23.0N 79.9W MAX WIND 135 KT...GUSTS 165 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...100NE 90SE 50SW 80NW. 34 KT...170NE 130SE 90SW 150NW. FORECAST VALID 10/0600Z 24.1N 81.0W MAX WIND 140 KT...GUSTS 170 KT. 64 KT... 60NE 60SE 30SW 60NW. 50 KT...100NE 90SE 60SW 90NW. 34 KT...170NE 130SE 110SW 160NW. FORECAST VALID 10/1800Z 25.7N 81.5W MAX WIND 125 KT...GUSTS 150 KT. 50 KT...100NE 90SE 70SW 90NW. 34 KT...190NE 170SE 130SW 190NW. FORECAST VALID 11/1800Z 30.6N 83.0W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 30SE 20SW 20NW. 34 KT...170NE 170SE 150SW 100NW. 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 12/1800Z 35.0N 85.9W...INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 13/1800Z 35.6N 87.0W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.1N 76.5W NEXT ADVISORY AT 09/0300Z $$ FORECASTER AVILA