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Hurricane Sally Forecast Advisory Number 18
2020-09-15 22:38:12| National Hurricane Center (Atlantic)
Issued at 2100 UTC TUE SEP 15 2020 000 WTNT24 KNHC 152038 TCMAT4 HURRICANE SALLY FORECAST/ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL192020 2100 UTC TUE SEP 15 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * MOUTH OF THE MISSISSIPPI RIVER TO THE OKALOOSA/WALTON COUNTY LINE FLORIDA * MOBILE BAY A HURRICANE WARNING IS IN EFFECT FOR... * EAST OF BAY ST. LOUIS TO NAVARRE FLORIDA A TROPICAL STORM WARNING IS IN EFFECT FOR... * EAST OF NAVARRE FLORIDA TO INDIAN PASS FLORIDA * BAY ST. LOUIS WESTWARD TO GRAND ISLE LOUISIANA 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. 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. HURRICANE CENTER LOCATED NEAR 29.5N 88.1W AT 15/2100Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTH OR 350 DEGREES AT 2 KT ESTIMATED MINIMUM CENTRAL PRESSURE 979 MB MAX SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT. 64 KT....... 35NE 20SE 0SW 25NW. 50 KT....... 70NE 40SE 0SW 50NW. 34 KT.......110NE 110SE 80SW 80NW. 12 FT SEAS..120NE 120SE 90SW 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 29.5N 88.1W AT 15/2100Z AT 15/1800Z CENTER WAS LOCATED NEAR 29.3N 88.1W FORECAST VALID 16/0600Z 29.9N 88.1W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 40NE 20SE 0SW 15NW. 50 KT... 60NE 40SE 20SW 30NW. 34 KT...110NE 110SE 80SW 80NW. FORECAST VALID 16/1800Z 30.6N 87.7W...INLAND MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 40NE 40SE 20SW 30NW. 34 KT... 80NE 100SE 60SW 60NW. FORECAST VALID 17/0600Z 31.5N 86.9W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 60NE 90SE 40SW 40NW. FORECAST VALID 17/1800Z 32.5N 85.3W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 18/0600Z 33.1N 83.3W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 18/1800Z 33.5N 81.0W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 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 19/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.5N 88.1W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 16/0000Z NEXT ADVISORY AT 16/0300Z $$ FORECASTER BROWN
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