000 WTNT24 KNHC 271456 TCMAT4 HURRICANE IAN FORECAST/ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092022 1500 UTC TUE SEP 27 2022 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WARNING HAS BEEN ISSUED FOR THE U.S. EAST COAST FROM MARINELAND FLORIDA TO THE MOUTH OF ST. MARY'S RIVER INCLUDING THE ST. JOHNS RIVER...AND THE DRY TORTUGAS. ALONG THE FLORIDA WEST COAST...A STORM SURGE WARNING HAS BEEN ISSUED FROM SUWANEE RIVER TO ANCLOTE RIVER. A HURRICANE WATCH IS IN EFFECT FOR THE WEST COAST OF FLORIDA FROM SOUTH OF BONITA BEACH TO CHOKOLOSKEE. A STORM SURGE WATCH HAS BEEN ISSUED FROM THE MOUTH OF THE ST. MARY'S RIVER TO SOUTH SANTEE RIVER SOUTH CAROLINA. THE TROPICAL STORM WARNING ALONG THE U.S. EAST COAST HAS BEEN EXTENDED NORTH TO ALTAMAHA SOUND GEORGIA AND SOUTH TO BOCA RATON FLORIDA. A TROPICAL STORM WATCH IS IN EFFECT FROM SOUTH OF BOCA RATON TO EAST OF FLAMINGO FLORIDA...FOR THE UPPER FLORIDA KEYS AND FLORIDA BAY. A TROPICAL STORM WATCH IS IN EFFECT FROM NORTH OF ALTAMAHA SOUND TO SOUTH SANTEE RIVER SOUTH CAROLINA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF ISLA DE JUVENTUD...PINAR DEL RIO...AND ARTEMISA * BONITA BEACH TO ANCLOTE RIVER...INCLUDING TAMPA BAY * DRY TORTUGAS A STORM SURGE WARNING IS IN EFFECT FOR... * SUWANEE RIVER SOUTHWARD TO FLAMINGO * TAMPA BAY * DRY TORTUGAS * MARINELAND TO THE MOUTH OF THE ST. MARY'S RIVER * ST. JOHNS RIVER A TROPICAL STORM WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF LA HABANA...MAYABEQUE...AND MATANZAS * SUWANNEE RIVER TO THE ANCLOTE RIVER * FLAMINGO TO BONITA BEACH * LOWER AND MIDDLE FLORIDA KEYS * BOCA RATON TO ALTAMAHA SOUND * LAKE OKEECHOBEE A STORM SURGE WATCH IS IN EFFECT FOR... * FLORIDA KEYS FROM THE CARD SOUND BRIDGE WESTWARD TO KEY WEST * FLORIDA BAY * AUCILLA RIVER TO SUWANEE RIVER * MOUTH OF ST. MARY'S RIVER TO SOUTH SANTEE RIVER * SOUTH OF MARINELAND TO THE VOLUSIA/FLAGLER COUNTY LINE A HURRICANE WATCH IS IN EFFECT FOR... * NORTH OF ANCLOTE RIVER TO SUWANNEE RIVER * SOUTH OF BONITA BEACH TO CHOKOLOSKEE A TROPICAL STORM WATCH IS IN EFFECT FOR... * NORTH OF SUWANNEE RIVER TO INDIAN PASS * NORTH OF ALTAMAHA SOUND TO SOUTH SANTEE RIVER * SOUTH OF BOCA RATON TO EAST OF FLAMINGO * UPPER FLORIDA KEYS * FLORIDA BAY A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...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. 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. 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. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. HURRICANE CENTER LOCATED NEAR 23.0N 83.5W AT 27/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTH OR 5 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 963 MB EYE DIAMETER 20 NM MAX SUSTAINED WINDS 100 KT WITH GUSTS TO 120 KT. 64 KT....... 30NE 25SE 20SW 20NW. 50 KT....... 60NE 60SE 50SW 60NW. 34 KT.......120NE 120SE 100SW 120NW. 12 FT SEAS.. 75NE 180SE 60SW 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 23.0N 83.5W AT 27/1500Z AT 27/1200Z CENTER WAS LOCATED NEAR 22.6N 83.6W FORECAST VALID 28/0000Z 24.4N 83.3W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 30NE 25SE 20SW 20NW. 50 KT... 60NE 60SE 50SW 60NW. 34 KT...120NE 120SE 100SW 130NW. FORECAST VALID 28/1200Z 26.0N 83.0W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 30NE 30SE 30SW 30NW. 50 KT... 70NE 50SE 50SW 70NW. 34 KT...130NE 120SE 110SW 150NW. FORECAST VALID 29/0000Z 27.1N 82.5W MAX WIND 110 KT...GUSTS 135 KT. 64 KT... 20NE 30SE 30SW 30NW. 50 KT... 70NE 50SE 50SW 60NW. 34 KT...190NE 120SE 130SW 160NW. FORECAST VALID 29/1200Z 27.8N 82.1W...INLAND MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 20SE 20SW 20NW. 50 KT... 70NE 40SE 30SW 50NW. 34 KT...300NE 120SE 120SW 160NW. FORECAST VALID 30/0000Z 28.5N 81.7W...INLAND MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 60NE 50SE 40SW 40NW. 34 KT...300NE 120SE 120SW 150NW. FORECAST VALID 30/1200Z 29.5N 81.5W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 50NE 50SE 20SW 20NW. 34 KT...300NE 120SE 90SW 120NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 01/1200Z 33.0N 81.8W...INLAND MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 02/1200Z 35.0N 81.5W...POST-TROP/EXTRATROP MAX WIND 25 KT...GUSTS 35 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.0N 83.5W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 27/1800Z NEXT ADVISORY AT 27/2100Z $$ FORECASTER BLAKE