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Tropical Storm Marco Forecast Advisory Number 8

2020-08-22 10:49:08| National Hurricane Center (Atlantic)

Issued at 0900 UTC SAT AUG 22 2020 000 WTNT24 KNHC 220849 TCMAT4 TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142020 0900 UTC SAT AUG 22 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WATCH IS IN EFFECT FOR... * PUNTA HERRERO TO CANCUN MEXICO A TROPICAL STORM WARNING IS IN EFFECT FOR... * PUNTA HERRERO TO DZILAM MEXICO A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 24 HOURS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN 24 HOURS. TROPICAL STORM CENTER LOCATED NEAR 19.6N 85.4W AT 22/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT....... 60NE 0SE 0SW 0NW. 12 FT SEAS.. 30NE 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 19.6N 85.4W AT 22/0900Z AT 22/0600Z CENTER WAS LOCATED NEAR 19.1N 85.2W FORECAST VALID 22/1800Z 20.9N 86.1W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 30SE 0SW 50NW. FORECAST VALID 23/0600Z 22.5N 87.1W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 0NW. 34 KT... 70NE 40SE 30SW 60NW. FORECAST VALID 23/1800Z 24.1N 88.3W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 20SE 0SW 0NW. 34 KT... 70NE 50SE 30SW 60NW. FORECAST VALID 24/0600Z 25.7N 89.9W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 0SW 0NW. 34 KT... 80NE 70SE 30SW 70NW. FORECAST VALID 24/1800Z 27.3N 91.3W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 20SE 0SW 20NW. 34 KT... 80NE 60SE 30SW 70NW. FORECAST VALID 25/0600Z 28.3N 93.4W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 20SE 0SW 20NW. 34 KT... 70NE 50SE 40SW 70NW. 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 26/0600Z 29.1N 96.2W...INLAND MAX WIND 40 KT...GUSTS 50 KT. OUTLOOK VALID 27/0600Z 29.6N 97.8W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.6N 85.4W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 22/1200Z NEXT ADVISORY AT 22/1500Z $$ FORECASTER ROBERTS

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Summary for Tropical Storm Marco (AT4/AL142020)

2020-08-22 08:04:39| National Hurricane Center (Atlantic)

...MARCO MOVING NORTH-NORTHWESTWARD TOWARD THE YUCATAN PENINSULA... As of 2:00 AM EDT Sat Aug 22 the center of Marco was located near 19.1, -85.2 with movement NNW at 13 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.

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Tropical Storm Marco Public Advisory Number 7A

2020-08-22 08:04:39| National Hurricane Center (Atlantic)

Issued at 200 AM EDT Sat Aug 22 2020 000 WTNT34 KNHC 220604 CCA TCPAT4 BULLETIN Tropical Storm Marco Intermediate Advisory Number 7A...CORRECTED NWS National Hurricane Center Miami FL AL142020 200 AM EDT Sat Aug 22 2020 CORRECTED LATITUDE IN DISCUSSION ...MARCO MOVING NORTH-NORTHWESTWARD TOWARD THE YUCATAN PENINSULA... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...19.1N 85.2W ABOUT 150 MI...240 KM SE OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NNW OR 335 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Punta Herrero to Cancun Mexico A Tropical Storm Warning is in effect for... * Punta Herrero to Dzilam Mexico A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within 24 hours. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 24 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM EDT (0600 UTC), the center of Tropical Storm Marco was located near latitude 19.1 North, longitude 85.2 West. Marco is moving toward the north-northwest near 13 mph (20 km/h). A slightly slower northwestward motion is expected for the next day or so, followed by an increase in forward speed by early next week. On the forecast track, the center of Marco will approach the east coast of the Yucatan Peninsula of Mexico today. The center will then cross the northeastern part of the Yucatan Peninsula tonight and move over the central Gulf of Mexico toward the northwestern Gulf on Sunday and Monday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Additional strengthening is forecast during the next couple of days as the system approaches the Yucatan peninsula and Marco could be near hurricane strength when it moves over the central Gulf of Mexico on Sunday. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. The minimum central pressure estimated by 53rd Air Force Reserve reconnaissane aircraft observations is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected to first reach the eastern Yucatan coast within the warning area this afternoon and will spread northward and westward within the warning area tonight, making outside preparations difficult or dangerous. Hurricane conditions are also possible within the hurricane watch area by this evening. RAINFALL: Marco is expected to produce the following rainfall accumulations through Sunday: Eastern portions of the Mexican states of Quintana Roo and Yucatan: 3 to 6 inches, isolated maximum totals of 10 inches. This rainfall may result in areas of flash flooding. Northeast Nicaragua and the Cayman Islands: 1 to 2 inches. NEXT ADVISORY ------------- Next complete advisory at 500 AM EDT. $$ Forecaster Roberts

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