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Tropical Storm Hanna Public Advisory Number 15
2020-07-26 16:44:44| National Hurricane Center (Atlantic)
Issued at 1000 AM CDT Sun Jul 26 2020 704 WTNT33 KNHC 261444 TCPAT3 BULLETIN Tropical Storm Hanna Advisory Number 15 NWS National Hurricane Center Miami FL AL082020 1000 AM CDT Sun Jul 26 2020 ...CENTER OF HANNA CONTINUES TO MOVE INLAND OVER NORTHEASTERN MEXICO... ...HEAVY RAIN AND DANGEROUS FLASH FLOODING CONTINUES OVER FAR SOUTHEAST TEXAS AND NORTHEAST MEXICO... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...26.1N 99.7W ABOUT 75 MI...120 KM NE OF MONTERREY MEXICO ABOUT 90 MI...150 KM W OF MCALLEN TEXAS MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WSW OR 250 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning along the coast of Texas south of Baffin Bay has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Barra el Mezquital Mexico to the Mouth of the Rio Grande Interests in northeastern Mexico should monitor the progress of Hanna. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Storm Hanna was located near latitude 26.1 North, longitude 99.7 West. Hanna is moving toward the west-southwest near 9 mph (15 km/h) and this motion is expected to continue through Monday. On the forecast track, the center of Hanna should continue to move farther inland over northeastern Mexico through tonight. Maximum sustained winds have decreased to near 45 mph (75 km/h) with higher gusts. Additional weakening is expected as the center of Hanna moves farther inland, and the cyclone is expected to weaken to a tropical depression later today and dissipate Monday or Monday night. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 995 mb (29.39 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Hanna can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC and on the web at www.hurricanes.gov/text/MIATCDAT3.shtml. STORM SURGE: Water levels along the Texas coast will gradually subside through this afternoon. Consult products issued by your local National Weather Service forecast office for additional information. WIND: Tropical storm conditions will continue near the center of Hanna for the next several hours, and along the coast of Mexico within the warning area for a few more hours. RAINFALL: Hanna is expected to produce the following rain accumulations and flood threats through Monday: South Texas...Additional 2 to 5 inches. Storm total amounts 6 to 12 inches, isolated 16 inches. Northern Mexican states of Coahuila, Nuevo Leon, Tamaulipas...6 to 12 inches, isolated 16 inches. Northern Mexican states of northern Zacatecas and eastern Durango...1 to 4 inches. This rain will produce life-threatening flash flooding, rapid rises on small streams, and isolated minor to moderate river flooding in South Texas. Flash flooding and mudslides are likely across Northern Mexican states. SURF: Swells generated by Hanna will continue to affect much of the Texas and Louisiana coasts for another day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A few tornadoes are possible today into this evening across parts of south Texas. NEXT ADVISORY ------------- Next intermediate advisory at 100 PM CDT. Next complete advisory at 400 PM CDT. $$ Forecaster Brown
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