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Hurricane Ida Forecast Advisory Number 9
2021-08-28 16:50:44| National Hurricane Center (Atlantic)
Issued at 1500 UTC SAT AUG 28 2021 000 WTNT24 KNHC 281450 TCMAT4 HURRICANE IDA FORECAST/ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 1500 UTC SAT AUG 28 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING HAS BEEN EXTENDED EASTWARD ALONG THE NORTHERN GULF COAST TO THE ALABAMA/FLORIDA BORDER. THE HURRICANE WATCH ALONG THE COAST OF MISSISSIPPI FROM THE MOUTH OF THE PEARL RIVER TO THE MISSISSIPPI/ALABAMA BORDER HAS BEEN DISCONTINUED. THE HURRICANE WATCH ALONG THE COAST OF LOUISIANA WEST OF INTRACOASTAL CITY HAS ALSO BEEN DISCONTINUED. THE STORM SURGE WATCH FROM SABINE PASS TO ROCKEFELLER WILDLIFE REFUGE LOUISIANA HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * EAST OF ROCKEFELLER WILDLIFE REFUGE LOUISIANA TO THE MISSISSIPPI/ALABAMA BORDER * VERMILION BAY...LAKE BORGNE...LAKE PONTCHARTRAIN...AND LAKE MAUREPAS A HURRICANE WARNING IS IN EFFECT FOR... * INTRACOASTAL CITY LOUISIANA TO THE MOUTH OF THE PEARL RIVER * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS A STORM SURGE WATCH IS IN EFFECT FOR... * MOBILE BAY A TROPICAL STORM WARNING IS IN EFFECT FOR... * CAMERON LOUISIANA TO WEST OF INTRACOASTAL CITY LOUISIANA * MOUTH OF THE PEARL RIVER TO THE ALABAMA/FLORIDA BORDER 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. HURRICANE CENTER LOCATED NEAR 24.8N 86.1W AT 28/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 984 MB MAX SUSTAINED WINDS 75 KT WITH GUSTS TO 90 KT. 64 KT....... 25NE 20SE 0SW 0NW. 50 KT....... 50NE 40SE 20SW 30NW. 34 KT.......110NE 100SE 60SW 100NW. 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 24.8N 86.1W AT 28/1500Z AT 28/1200Z CENTER WAS LOCATED NEAR 24.4N 85.7W FORECAST VALID 29/0000Z 26.3N 87.9W MAX WIND 100 KT...GUSTS 120 KT. 64 KT... 20NE 20SE 15SW 20NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT...120NE 100SE 70SW 100NW. FORECAST VALID 29/1200Z 28.0N 89.8W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 30NE 25SE 15SW 25NW. 50 KT... 60NE 50SE 30SW 40NW. 34 KT...130NE 110SE 80SW 100NW. FORECAST VALID 30/0000Z 29.4N 91.0W...NEAR COAST OF LOUISIANA MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 30NE 30SE 20SW 30NW. 50 KT... 50NE 50SE 30SW 40NW. 34 KT...110NE 110SE 80SW 100NW. FORECAST VALID 30/1200Z 31.0N 91.5W...INLAND MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 20NE 30SE 0SW 20NW. 34 KT... 60NE 90SE 40SW 40NW. FORECAST VALID 31/0000Z 32.7N 91.0W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 31/1200Z 34.4N 89.8W...INLAND MAX WIND 25 KT...GUSTS 35 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 01/1200Z 36.8N 85.3W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 02/1200Z 37.9N 79.9W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 24.8N 86.1W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 28/1800Z NEXT ADVISORY AT 28/2100Z $$ FORECASTER BROWN
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