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Hurricane Sally Forecast Advisory Number 17
2020-09-15 16:44:05| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE SEP 15 2020 000 WTNT24 KNHC 151443 TCMAT4 HURRICANE SALLY FORECAST/ADVISORY NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL AL192020 1500 UTC TUE SEP 15 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE HURRICANE WARNING FROM THE MOUTH OF THE PEARL RIVER TO BAY ST. LOUIS MISSISSIPPI HAS BEEN CHANGED TO A TROPICAL STORM WARNING. THE TROPICAL STORM WARNING FOR LAKE PONTCHARTRAIN...LAKE MAUREPAS... AND METROPOLITAN NEW ORLEANS HAS BEEN DISCONTINUED. 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 29.1N 88.2W AT 15/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT 2 KT ESTIMATED MINIMUM CENTRAL PRESSURE 983 MB MAX SUSTAINED WINDS 75 KT WITH GUSTS TO 100 KT. 64 KT....... 40NE 25SE 0SW 25NW. 50 KT....... 70NE 40SE 0SW 30NW. 34 KT.......110NE 110SE 30SW 90NW. 12 FT SEAS.. 90NE 150SE 120SW 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 29.1N 88.2W AT 15/1500Z AT 15/1200Z CENTER WAS LOCATED NEAR 29.1N 88.0W FORECAST VALID 16/0000Z 29.6N 88.2W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 40NE 20SE 0SW 15NW. 50 KT... 60NE 40SE 0SW 30NW. 34 KT...110NE 110SE 50SW 80NW. FORECAST VALID 16/1200Z 30.2N 88.1W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 20SE 10SW 20NW. 50 KT... 50NE 40SE 20SW 40NW. 34 KT... 90NE 100SE 50SW 60NW. FORECAST VALID 17/0000Z 31.0N 87.6W...INLAND MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 40SE 20SW 20NW. 34 KT... 60NE 90SE 50SW 40NW. FORECAST VALID 17/1200Z 31.9N 86.6W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 70SE 20SW 30NW. FORECAST VALID 18/0000Z 32.6N 85.2W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 18/1200Z 33.0N 83.6W...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 19/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.1N 88.2W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 15/1800Z NEXT ADVISORY AT 15/2100Z $$ FORECASTER BROWN
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