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#1013461 (Received by flhurricane at: 11:00 AM 23.Aug.2020) TCMAT4 TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142020 1500 UTC SUN AUG 23 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WATCH HAS BEEN DISCONTINUED FROM THE MISSISSIPPI/ALABAMA BORDER TO THE ALABAMA/FLORIDA BORDER...INCLUDING MOBILE BAY. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR.... * MORGAN CITY LOUISIANA TO OCEAN SPRINGS MISSISSIPPI * LAKE BORGNE A HURRICANE WARNING IS IN EFFECT FOR... * MORGAN CITY LOUISIANA TO THE MOUTH OF THE PEARL RIVER A STORM SURGE WATCH IS IN EFFECT FOR... * SABINE PASS TO MORGAN CITY LOUISIANA * OCEAN SPRINGS MISSISSIPPI TO THE MISSISSIPPI/ALABAMA BORDER * LAKE PONTCHARTRAIN AND LAKE MAUREPAS A HURRICANE WATCH IS IN EFFECT FOR... * INTRACOASTAL CITY LOUISIANA TO WEST OF MORGAN CITY * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS A TROPICAL STORM WARNING IS IN EFFECT FOR... * MOUTH OF THE PEARL RIVER TO THE MISSISSIPPI/ALABAMA BORDER * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS A TROPICAL STORM WATCH IS IN EFFECT FOR... * MISSISSIPPI/ALABAMA BORDER 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 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 WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. TROPICAL STORM CENTER LOCATED NEAR 24.7N 87.3W AT 23/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 20NE 20SE 0SW 20NW. 34 KT....... 60NE 50SE 20SW 50NW. 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 24.7N 87.3W AT 23/1500Z AT 23/1200Z CENTER WAS LOCATED NEAR 24.3N 87.2W FORECAST VALID 24/0000Z 26.4N 88.1W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 10NE 10SE 0SW 0NW. 50 KT... 20NE 20SE 0SW 20NW. 34 KT... 60NE 50SE 20SW 50NW. FORECAST VALID 24/1200Z 28.2N 89.1W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 15NE 10SE 0SW 10NW. 50 KT... 30NE 20SE 0SW 20NW. 34 KT... 70NE 50SE 20SW 50NW. FORECAST VALID 25/0000Z 29.5N 90.4W...INLAND MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 10NE 0SE 0SW 0NW. 34 KT... 40NE 30SE 10SW 20NW. FORECAST VALID 25/1200Z 30.5N 92.1W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 20NE 0SE 0SW 0NW. FORECAST VALID 26/0000Z 31.2N 93.8W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 26/1200Z 31.8N 95.4W...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 27/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 24.7N 87.3W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 23/1800Z NEXT ADVISORY AT 23/2100Z $$ FORECASTER LATTO |