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Tropical Storm Marco Forecast Advisory Number 10
2020-08-22 22:54:20| National Hurricane Center (Atlantic)
Issued at 2100 UTC SAT AUG 22 2020 000 WTNT24 KNHC 222054 TCMAT4 TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142020 2100 UTC SAT AUG 22 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WATCH HAS BEEN ISSUED FROM SABINE PASS EASTWARD TO THE ALABAMA/FLORIDA BORDER...INCLUDING LAKE PONTCHARTRAIN...LAKE MAUREPAS...LAKE BORGNE...AND MOBILE BAY. A HURRICANE WATCH HAS BEEN ISSUED FROM INTRACOASTAL CITY LOUISIANA EASTWARD TO THE MISSISSIPPI/ALABAMA BORDER...INCLUDING LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS. A TROPICAL STORM WATCH HAS BEEN ISSUED FROM THE MISSISSIPPI/ALABAMA BORDER EASTWARD TO THE ALABAMA/FLORIDA BORDER. THE GOVERNMENT OF MEXICO HAS DISCONTINUED THE TROPICAL STORM WARNING FOR THE NORTHEASTERN YUCATAN COAST. 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 21.9N 85.7W AT 22/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 992 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 20NE 20SE 0SW 10NW. 34 KT....... 50NE 80SE 10SW 40NW. 12 FT SEAS.. 60NE 0SE 0SW 0NW. 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 21.9N 85.7W AT 22/2100Z AT 22/1800Z CENTER WAS LOCATED NEAR 21.4N 85.5W FORECAST VALID 23/0600Z 23.3N 86.5W 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 23/1800Z 25.3N 87.3W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 10SW 20NW. 34 KT... 70NE 50SE 20SW 40NW. FORECAST VALID 24/0600Z 27.5N 88.3W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 10SW 20NW. 34 KT... 70NE 50SE 20SW 40NW. FORECAST VALID 24/1800Z 29.3N 89.6W...ON THE COAST MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 0SW 20NW. 34 KT... 60NE 40SE 20SW 40NW. FORECAST VALID 25/0600Z 30.4N 91.1W...INLAND MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 10SE 0SW 0NW. 34 KT... 50NE 30SE 20SW 30NW. FORECAST VALID 25/1800Z 31.1N 92.7W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 30SE 0SW 30NW. 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 26/1800Z 32.3N 95.6W...INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 27/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.9N 85.7W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 23/0000Z NEXT ADVISORY AT 23/0300Z $$ FORECASTER BERG
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