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Tropical Storm Delta Forecast Discussion Number 23
2020-10-10 10:36:02| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Sat Oct 10 2020 000 WTNT41 KNHC 100835 TCDAT1 Tropical Storm Delta Discussion Number 23 NWS National Hurricane Center Miami FL AL262020 400 AM CDT Sat Oct 10 2020 Delta continues to track north-northeastward across Louisiana bringing tropical-storm-force winds and heavy rains to portions of Louisiana, Mississippi, and Arkansas. Doppler radar images show that the storm is asymmetric, with most of the heavy rains occurring on the north side of the circulation. Based on surface observations, the initial intensity is lowered to 40 kt for this advisory. Continued weakening is forecast, and Delta should become a tropical depression later today, and dissipate entirely in a couple of days. The tropical storm is moving north-northeastward at 14 kt. A bend to the northeast is expected to occur later today, and that motion should continue until the system opens into a trough in 48 to 60 hours. Even though Delta is forecast to dissipate over or near Kentucky, the moisture associated with its remnants will continue northeastward and move across the mid-Atlantic and northeast U.S. early next week. Key Messages: 1. Water levels will continue to subside today along the Louisiana coast. Consult products issued by your local National Weather Service forecast office for additional information. 2. Tropical-storm-force winds will persist for a few more hours near the path of Deltas center. 3. Heavy rainfall will lead to flash flooding and minor river flooding across portions of the Lower Mississippi and Tennessee Valleys today, and into the Southern Appalachians through Sunday. Minor to major river flooding will continue across portions of Louisiana and Mississippi though much of next week. FORECAST POSITIONS AND MAX WINDS INIT 10/0900Z 31.8N 91.8W 40 KT 45 MPH...INLAND 12H 10/1800Z 33.2N 90.6W 30 KT 35 MPH...INLAND 24H 11/0600Z 34.4N 88.8W 25 KT 30 MPH...INLAND 36H 11/1800Z 36.0N 86.6W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 12/0600Z 38.2N 83.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 12/1800Z...DISSIPATED $$ Forecaster Cangialosi
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Category:Transportation and Logistics
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