Tropical Depression Gordon Advisory Number 13 NWS National Hurricane Center Miami FL AL072018 1000 AM CDT Wed Sep 05 2018 ...GORDON CONTINUES TO WEAKEN OVER CENTRAL MISSISSIPPI... ...THREAT OF HEAVY RAINS AND FLOODING WILL CONTINUE FOR SEVERAL DAYS... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...32.3N 90.2W ABOUT 5 MI...10 KM W OF JACKSON MISSISSIPPI MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHESWATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. For more information on Gordon, please see products issued by your local National Weather Service office. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Depression Gordon was located near latitude 32.3 North, longitude 90.2 West. The depression is moving toward the northwest near 14 mph (22 km/h). A northwestward motion with a decrease in forward speed is expected over the next couple of days. On the forecast track, the center of Gordon will move across the lower Mississippi Valley today and tonight. A turn toward the north-northwest and north is forecast to occur on Friday. Maximum sustained winds have decreased to near 30 mph (45 km/h) with higher gusts. Additional weakening is expected as Gordon moves farther inland. Jackson, Mississippi, recently reported a wind gust of 35 mph (55 km/h). The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Gordon is expected to produce total rain accumulations of 4 to 8 inches over the western Florida Panhandle, southwest Alabama, central Mississippi, Arkansas, Missouri, southern Iowa and Illinois, with isolated maximum amounts of 12 inches through early Saturday. This rainfall will cause flash flooding across portions of these areas.
WIND: Wind gusts to tropical storm force could occur in showers and thunderstorms associated with Gordon today. TORNADOES: A tornado or two is possible through this evening over Mississippi and western Alabama. STORM SURGE: Water levels along the northern Gulf of Mexico coast will gradually subside later today.
Tropical Depression Gordon Discussion Number 13 NWS National Hurricane Center Miami FL AL072018 1000 AM CDT Wed Sep 05 2018 Surface observations and WSR-88D Doppler radar data indicate that Gordon continues to weaken as it passes near Jackson, Mississippi, and the initial intensity has been reduced to a possibly generous 25 kt. Additional weakening is expected as the cyclone moves farther inland, and it is expected to decay to a remnant low pressure area in about 48 h. The remnant low is then expected to become extratropical as it merges with a frontal zone over the central United States by Saturday. Although Gordon has weakened, the threat of heavy rainfall and flooding will continue for the next few days. The initial motion estimate is 320/12. Gordon should continue northwestward with a decrease in forward speed during the next 48 h as it moves along the southwestern side of a mid-level ridge. After that, the cyclone or its remnants are expected to turn northward and northeastward as it recurves into the westerlies. The new forecast track is similar to the previous one. However, during the first 48 h it lies to the east of the various consensus models due to a westward shift in the guidance since the last advisory. This will be the last advisory issued by the National Hurricane Center on Gordon. Future information on Gordon can be found in Public Advisories issued by the Weather Prediction Center beginning at 4 PM CDT, under AWIPS header TCPAT2, WMO header WTNT32 KWNH, and on the web at https://www.wpc.ncep.noaa.gov. Key Messages: 1. Even though Gordon is weakening, heavy rainfall will continue to affect the western Florida Panhandle, southwest Alabama, central Mississippi, Arkansas, Missouri, southern Iowa and Illinois, with isolated maximum amounts of 12 inches possible. This rainfall will cause flash flooding across portions of these areas. FORECAST POSITIONS AND MAX WINDS INIT 05/1500Z 32.3N 90.2W 25 KT 30 MPH...INLAND 12H 06/0000Z 33.3N 91.1W 25 KT 30 MPH...INLAND 24H 06/1200Z 33.9N 92.2W 20 KT 25 MPH...INLAND 36H 07/0000Z 34.5N 93.0W 20 KT 25 MPH...INLAND 48H 07/1200Z 35.3N 93.6W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 08/1200Z 37.0N 93.5W 20 KT 25 MPH...POST-TROP/EXTRATROP 96H 09/1200Z 39.5N 90.0W 20 KT 25 MPH...POST-TROP/EXTRATROP 120H 10/1200Z 43.0N 84.0W 20 KT 25 MPH...POST-TROP/EXTRATROP NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on Gordon. Future information on Gordon can be found in Public Advisories issued by the Weather Prediction Center beginning at 4 PM CDT, under AWIPS header TCPAT2, WMO header WTNT32 KWNH, and on the web at https://www.wpc.ncep.noaa.gov.
NOLA Reporter 