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Tropical Storm Sally Forecast Advisory Number 7
2020-09-13 11:41:33| National Hurricane Center (Atlantic)
Issued at 0900 UTC SUN SEP 13 2020 000 WTNT24 KNHC 130940 CCA TCMAT4 TROPICAL STORM SALLY FORECAST/ADVISORY NUMBER 7...CORRECTED NWS NATIONAL HURRICANE CENTER MIAMI FL AL192020 0900 UTC SUN SEP 13 2020 CORRECTED FOR INLAND STATUS AT 60 AND 72 HOURS CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WARNING HAS BEEN ISSUED FROM PORT FOURCHON LOUISIANA TO MISSISSIPPI/ALABAMA BORDER. A HURRICANE WARNING HAS BEEN ISSUED FROM GRAND ISLE LOUISIANA NORTHEAST TO OCEAN SPRINGS MISSISSIPPI...INCLUDING NEW ORLEANS...LAKE PONTCHARTRAIN AND LAKE MAUREPAS. A HURRICANE WATCH HAS BEEN ISSUED FROM EAST OF MORGAN CITY LOUISIANA TO WEST OF GRAND ISLE. A TROPICAL STORM WARNING HAS BEEN ISSUED FROM EAST OF OCEAN SPRINGS MISSISSIPPI TO INDIAN PASS FLORIDA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT FOURCHON LOUISIANA TO THE MISSISSIPPI/ALABAMA BORDER * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND LAKE BORGNE A HURRICANE WARNING IS IN EFFECT FOR... * GRAND ISLE LOUISIANA TO OCEAN SPRINGS MISSISSIPPI * LAKE PONTCHARTRAIN AND LAKE MAUREPAS INCLUDING METROPOLITAN NEW ORLEANS A STORM SURGE WATCH IS IN EFFECT FOR... * MISSISSIPPI/ALABAMA BORDER TO THE ALABAMA/FLORIDA BORDER A HURRICANE WATCH IS IN EFFECT FOR... * EAST OF OCEAN SPRINGS TO THE ALABAMA/FLORIDA BORDER A TROPICAL STORM WARNING IS IN EFFECT FOR... * EAST OF OCEAN SPRINGS TO INDIAN PASS A TROPICAL STORM WATCH IS IN EFFECT FOR... * INDIAN PASS TO OCHLOCKONEE RIVER FLORIDA 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. A WARNING IS TYPICALLY ISSUED 36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. 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. 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 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...IN THIS CASE WITHIN 12 TO 24 HOURS. TROPICAL STORM CENTER LOCATED NEAR 27.0N 84.0W AT 13/0900Z POSITION ACCURATE WITHIN 35 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 50 KT. 34 KT....... 50NE 80SE 0SW 20NW. 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 27.0N 84.0W AT 13/0900Z AT 13/0600Z CENTER WAS LOCATED NEAR 26.7N 83.5W FORECAST VALID 13/1800Z 27.7N 85.4W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 0NW. 34 KT... 90NE 80SE 0SW 40NW. FORECAST VALID 14/0600Z 28.3N 87.2W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 40NE 20SE 0SW 20NW. 34 KT... 90NE 80SE 20SW 70NW. FORECAST VALID 14/1800Z 28.7N 88.7W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 10SE 10SW 15NW. 50 KT... 40NE 20SE 20SW 30NW. 34 KT...100NE 80SE 50SW 70NW. FORECAST VALID 15/0600Z 29.2N 89.7W MAX WIND 85 KT...GUSTS 105 KT. 64 KT... 20NE 10SE 10SW 20NW. 50 KT... 40NE 30SE 20SW 30NW. 34 KT...100NE 80SE 50SW 60NW. FORECAST VALID 15/1800Z 30.1N 90.0W...INLAND MAX WIND 70 KT...GUSTS 85 KT. 50 KT... 40NE 30SE 10SW 30NW. 34 KT... 60NE 90SE 30SW 40NW. FORECAST VALID 16/0600Z 31.0N 90.0W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 10NE 10SE 0SW 10NW. 34 KT... 30NE 60SE 30SW 20NW. 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 17/0600Z 32.8N 88.6W...INLAND MAX WIND 30 KT...GUSTS 40 KT. OUTLOOK VALID 18/0600Z 34.5N 84.5W...INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 27.0N 84.0W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 13/1200Z NEXT ADVISORY AT 13/1500Z $$ FORECASTER BLAKE
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