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Tropical Storm Marco Forecast Advisory Number 11
2020-08-23 04:43:52| National Hurricane Center (Atlantic)
Issued at 0300 UTC SUN AUG 23 2020 000 WTNT24 KNHC 230243 TCMAT4 TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142020 0300 UTC SUN AUG 23 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WATCH IS IN EFFECT FOR... * SABINE PASS TO THE ALABAMA/FLORIDA BORDER * LAKE PONTCHARTRAIN...LAKE MAUREPAS...LAKE BORGNE...AND MOBILE BAY A HURRICANE WATCH IS IN EFFECT FOR... * INTRACOASTAL CITY LOUISIANA TO THE MISSISSIPPI/ALABAMA BORDER * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS A TROPICAL STORM WARNING IS IN EFFECT FOR... * PROVINCE OF PINAR DEL RIO CUBA A TROPICAL STORM WATCH IS IN EFFECT FOR... * MISSISSIPPI/ALABAMA BORDER TO THE ALABAMA/FLORIDA BORDER 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 WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. TROPICAL STORM CENTER LOCATED NEAR 22.8N 86.3W AT 23/0300Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 994 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 20NE 20SE 0SW 10NW. 34 KT....... 50NE 60SE 10SW 30NW. 12 FT SEAS.. 60NE 30SE 0SW 30NW. 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 22.8N 86.3W AT 23/0300Z AT 23/0000Z CENTER WAS LOCATED NEAR 22.3N 86.1W FORECAST VALID 23/1200Z 24.3N 87.1W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 10NE 10SE 0SW 0NW. 50 KT... 20NE 20SE 0SW 10NW. 34 KT... 60NE 60SE 10SW 40NW. FORECAST VALID 24/0000Z 26.3N 87.9W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 10SW 20NW. 34 KT... 70NE 50SE 20SW 40NW. FORECAST VALID 24/1200Z 28.3N 88.9W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 10SW 20NW. 34 KT... 70NE 50SE 20SW 40NW. FORECAST VALID 25/0000Z 29.6N 90.4W...INLAND MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 20SE 0SW 20NW. 34 KT... 50NE 30SE 10SW 30NW. FORECAST VALID 25/1200Z 30.5N 92.0W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 0SE 0SW 30NW. FORECAST VALID 26/0000Z 30.9N 93.5W...INLAND MAX WIND 30 KT...GUSTS 40 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 27/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.8N 86.3W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 23/0600Z NEXT ADVISORY AT 23/0900Z $$ FORECASTER ZELINSKY
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