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Hurricane Grace Public Advisory Number 32
2021-08-21 10:53:20| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Sat Aug 21 2021 885 WTNT32 KNHC 210853 TCPAT2 BULLETIN Hurricane Grace Advisory Number 32 NWS National Hurricane Center Miami FL AL072021 400 AM CDT Sat Aug 21 2021 ...GRACE MOVING WESTWARD OVER EASTERN MEXICO... ...STRONG WINDS AND HEAVY RAINFALL WILL SPREAD ACROSS PORTIONS OF INTERIOR MEXICO TODAY... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...20.5N 97.8W ABOUT 45 MI...70 KM SW OF TUXPAN MEXICO ABOUT 135 MI...220 KM NW OF VERACRUZ MEXICO MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H PRESENT MOVEMENT...W OR 260 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...970 MB...28.64 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * The coast of mainland Mexico from Puerto Veracruz to Cabo Rojo A Tropical Storm Warning is in effect for... * The coast of mainland Mexico from north of Cabo Rojo to Barra del Tordo A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A Tropical Storm Warning means that tropical storm conditions are expected somewhere withing the warning area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 400 AM CDT (0900 UTC), the center of Hurricane Grace was located near latitude 20.5 North, longitude 97.8 West. Grace is moving toward the west near 14 mph (22 km/h), and this general motion is expected to continue through tonight. On the forecast track, Grace will continue to move farther inland and reach central Mexico later today. Maximum sustained winds have decreased to near 110 mph (175 km/h) with higher gusts. Rapid weakening is expected as Grace moves inland over the mountains of central Mexico today, and the hurricane is forecast to weaken to a tropical storm by this afternoon, and then dissipate on Sunday. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 970 mb (28.64 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. STORM SURGE: A dangerous storm surge will raise water levels by as much as 6 to 9 ft above normal tide levels in areas of onshore flow during the next few hours near where Grace made landfall. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are expected to continue within portions of the hurricane warning area in mainland Mexico over the next few hours. Tropical storm conditions are expected to continue within the tropical storm warning area in mainland Mexico through this morning. RAINFALL: Grace is expected to produce the following rainfall amounts: Over Veracruz, Puebla, Tlaxcala, Hidalgo, Queretaro, and eastern San Luis Potosi...6 to 12 inches of rain with isolated maximum totals of 18 inches are expected through Sunday. Heavy rainfall from Grace will result in significant flash and urban flooding as well as mudslides. SURF: High surf generated by Grace will affect the southern Gulf of Mexico coastline through the weekend. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 700 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Latto
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