ZCZC NFDTCPAT3 ALL TTAA00 KWNH DDHHMM BULLETIN Tropical Depression Hanna Advisory Number 17 NWS Weather Prediction Center College Park MD AL082020 1000 PM CDT Sun Jul 26 2020 ...TROPICAL DEPRESSION HANNA OVER NORTHEASTERN MEXICO... ...HEAVY RAIN AND DANGEROUS FLASH FLOODING CONTINUE OVER FAR SOUTHEAST TEXAS AND NORTHEAST MEXICO... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...24.6N 101.7W ABOUT 110 MI...190 KM SW OF MONTERREY MEXICO MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...WSW OR 250 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- Flash flood warnings are in effect for Deep South Texas. Interests in northeastern Mexico and southern Texas 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 PM CDT (0300 UTC), the center of Tropical Depression Hanna was located near latitude 24.6 North, longitude 101.7 West. The depression is moving toward the southwest near 7 mph (11 km/h) and this motion is expected to continue into early Monday. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Continued weakening should continue as Hanna moves across higher terrain and becomes a remnant low on Monday. The estimated minimum central pressure is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Hanna is expected to produce the following rain accumulations and flood threats through Monday: South Texas...Additional 1 to 4 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 the 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. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Carbin FORECAST POSITIONS AND MAX WINDS INIT 27/0300Z 24.6N 101.7W 25 KT 30 MPH...INLAND 12H 27/1200Z 24.2N 102.7W 20 KT 25 MPH...POST-TROP/INLAND NNNN