ZCZC MIATCPAT3 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Depression Hanna Advisory Number 16 NWS National Hurricane Center Miami FL AL082020 400 PM CDT Sun Jul 26 2020 ...HANNA WEAKENS TO A TROPICAL DEPRESSION OVER NORTHEASTERN MEXICO... ...HEAVY RAIN AND DANGEROUS FLASH FLOODING CONTINUE OVER FAR SOUTHEAST TEXAS AND NORTHEAST MEXICO... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...25.6N 100.6W ABOUT 35 MI...55 KM WSW OF MONTERREY MEXICO MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WSW OR 245 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. 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 400 PM CDT (2100 UTC), the center of Tropical Depression Hanna was located near latitude 25.6 North, longitude 100.6 West. The depression 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. Maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Additional weakening is expected as the center of Hanna moves farther inland. Hanna is expected to become a remnant low on Monday and dissipate by Monday night. The estimated minimum central pressure is 1002 mb (29.59 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. 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, northern San Luis Potosi, and eastern Durango...1 to 4 inches. This rain will produce life-threatening flash flooding, rapid rises on small streams, and isolated minor 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 northeastern Mexico coasts through early Monday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: Isolated tornadoes are possible through this evening across parts of south Texas NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on Hanna. Future information on this system can be found in Public Advisories issued by the Weather Prediction Center beginning at 10 PM CDT, under AWIPS header TCPAT3, WMO header WTNT33 KWNH, and on the web at http://www.wpc.ncep.noaa.gov. $$ Forecaster Brown NNNN