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| #1009826 (Received by flhurricane at: 4:45 PM 26.Jul.2020) TCDAT3 Tropical Depression Hanna Discussion Number 16 NWS National Hurricane Center Miami FL AL082020 400 PM CDT Sun Jul 26 2020 Surface observations along with radar and satellite imagery show that Hanna continues to weaken as it moves farther inland. There have been no recent observations of sustained tropical-storm-force winds, and Doppler velocities have continued to decrease. Based on these trends, the initial wind speed has been reduced to 30 kt. Hanna should continue to spin down while it moves over the high terrain of northeastern Mexico. The system is forecast to become a remnant low in 12-18 hours, and should dissipate over the mountains of Mexico by late Monday, if not sooner. Hanna is moving west-southwestward or 245/8 kt. The cyclone should continue on this general heading and speed until dissipation occurs. The updated NHC track forecast is again similar to the previous advisory and is close to the dynamical model consensus. This is the last NHC advisory 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. Key Messages 1. Heavy rainfall from Hanna has already produced numerous reports of flash flooding across south Texas. Additional heavy rainfall will continue to result in life-threatening flash flooding over south Texas and northern Mexico, and isolated minor river flooding in south Texas. FORECAST POSITIONS AND MAX WINDS INIT 26/2100Z 25.6N 100.6W 30 KT 35 MPH...INLAND 12H 27/0600Z 25.2N 101.6W 25 KT 30 MPH...INLAND 24H 27/1800Z 25.0N 102.6W 20 KT 25 MPH...POST-TROP/INLAND 36H 28/0600Z...DISSIPATED $$ Forecaster Brown |
