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Hurricane Ida Forecast Advisory Number 12
2021-08-29 10:55:29| National Hurricane Center (Atlantic)
Issued at 0900 UTC SUN AUG 29 2021 000 WTNT24 KNHC 290855 TCMAT4 HURRICANE IDA FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 0900 UTC SUN AUG 29 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * EAST OF ROCKEFELLER WILDLIFE REFUGE LOUISIANA TO THE ALABAMA/FLORIDA BORDER * VERMILION BAY...LAKE BORGNE...LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND MOBILE BAY 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 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 WITHIN THE NEXT 6 TO 12 HOURS. 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...IN THIS CASE WITHIN THE NEXT 12 TO 24 HOURS. HURRICANE CENTER LOCATED NEAR 28.0N 89.1W AT 29/0900Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT 13 KT ESTIMATED MINIMUM CENTRAL PRESSURE 946 MB EYE DIAMETER 15 NM MAX SUSTAINED WINDS 120 KT WITH GUSTS TO 145 KT. 64 KT....... 35NE 30SE 20SW 30NW. 50 KT....... 70NE 60SE 40SW 60NW. 34 KT.......120NE 100SE 80SW 110NW. 12 FT SEAS..180NE 150SE 150SW 120NW. 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 28.0N 89.1W AT 29/0900Z AT 29/0600Z CENTER WAS LOCATED NEAR 27.6N 88.7W FORECAST VALID 29/1800Z 29.1N 90.3W...NEAR SERN LOUISIANA COAST MAX WIND 125 KT...GUSTS 150 KT. 64 KT... 35NE 30SE 20SW 30NW. 50 KT... 70NE 60SE 40SW 60NW. 34 KT...130NE 110SE 90SW 100NW. FORECAST VALID 30/0600Z 30.6N 91.1W...INLAND MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 25NE 25SE 15SW 15NW. 50 KT... 50NE 50SE 30SW 30NW. 34 KT...100NE 120SE 80SW 70NW. FORECAST VALID 30/1800Z 32.2N 91.0W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 120SE 40SW 40NW. FORECAST VALID 31/0600Z 33.8N 90.0W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 31/1800Z 35.4N 87.9W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 01/0600Z 36.7N 85.2W...INLAND 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 02/0600Z 38.9N 78.9W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 03/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 28.0N 89.1W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 29/1200Z NEXT ADVISORY AT 29/1500Z $$ FORECASTER STEWART
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