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Tropical Storm Gamma Public Advisory Number 3A
2020-10-03 07:59:50| National Hurricane Center (Atlantic)
Issued at 100 AM CDT Sat Oct 03 2020 536 WTNT35 KNHC 030559 TCPAT5 BULLETIN Tropical Storm Gamma Intermediate Advisory Number 3A NWS National Hurricane Center Miami FL AL252020 100 AM CDT Sat Oct 03 2020 ...GAMMA STRENGTHENS AS IT MOVES TOWARD THE YUCATAN PENINSULA... ...HEAVY RAINFALL EXPECTED TO BE THE MAIN THREAT... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...19.2N 86.6W ABOUT 85 MI...135 KM SSE OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...45 MPH...70 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.41 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Punta Herrero to Cabo Catoche Mexico A Tropical Storm Watch is in effect for... * South of Punta Herrero to Puerto Costa Maya Mexico * West of Cabo Catoche to Dzilam Mexico 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. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 100 AM CDT (0600 UTC), the center of Tropical Storm Gamma was located near latitude 19.2 North, longitude 86.6 West. Gamma is moving toward the northwest near 9 mph (15 km/h). A slower northwestward motion is expected during the next couple of days, followed by a turn to the west or west-southwest. On the forecast track, the center of Gamma should be near the northeastern Yucatan Peninsula later today. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 45 mph (70 km/h) with higher gusts. Additional strengthening is expected before Gamma moves inland over the northeastern Yucatan Peninsula later today. After landfall, slight weakening or little change in strength is expected. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The minimum central pressure reported by the Hurricane Hunter aircraft is 996 mb (29.41 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Gamma can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT5.shtml. RAINFALL: Gamma is expected to produce rainfall of 4 to 8 inches across portions of the Yucatan Peninsula and far western Cuba, with maximum rainfall amounts as high as 10 to 15 inches possible across the northeastern portion of the Mexican state of Quintana Roo. This rainfall may produce life-threatening flash floods. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas with rainfall of 8 to 12 inches and isolated maximum amounts of 20 inches. This rainfall may produce life-threatening flash floods and mudslides. Rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected in the Bay Islands of Honduras and over the Cayman Islands. WIND: Tropical storm conditions are expected within the Tropical Storm Warning area by later this morning, and are possible within the Tropical Storm Watch area later today and on Sunday. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Forecaster Beven
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