ZCZC NFDTCPAT1 ALL TTAA00 KWNH DDHHMM BULLETIN Post-Tropical Cyclone Delta Advisory Number 27 NWS Weather Prediction Center College Park MD AL262020 400 AM CDT Sun Oct 11 2020 ...POST-TROPICAL DELTA CONTINUES TO BE A HEAVY RAINFALL THREAT... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...34.6N 87.7W ABOUT 65 MI...105 KM ENE OF TUPELO MISSISSIPPI ABOUT 120 MI...190 KM SSW OF NASHVILLE TENNESSEE MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...ENE OR 60 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- Flood and Flash Flood watches remain in effect for areas in and near the southern Appalachians. DISCUSSION AND OUTLOOK ---------------------- At 400 AM CDT (0900 UTC), the center of Post-Tropical Cyclone Delta was located near latitude 34.6 North, longitude 87.7 West. The post-tropical cyclone is moving toward the east-northeast near 15 mph (24 km/h) and this motion is expected to continue today. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Weakening is forecast during the next 24 hours, as Delta's surface low is expected to dissipate across the central Appalachians late Sunday night. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: In the Appalachian region of northeast Georgia, the western Carolinas, and western Virginia, the remnants of Delta are expected to produce storm total rainfall of 3 to 6 inches, which could lead to flash, urban, and small stream flooding, especially in areas of steep terrain. Isolated minor river flooding is possible. Across much of the rest of the Mid-Atlantic, 1 to 3 inches of rain, with locally higher amounts, are expected. Localized flash and urban flooding are possible, but overall hydrologic impacts are expected to be minimal. Moderate to major river flooring will continue across the Calcasieu and Vermillion river basins in Louisiana through much of next week. TORNADOES: A few brief/weak tornadoes are possible across the Carolinas today. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Hurley FORECAST POSITIONS AND MAX WINDS INIT 11/0900Z 34.6N 87.7W 25 KT 30 MPH...POST-TROP/EXTRATROP 12H 11/1800Z 35.5N 85.6W 20 KT 25 MPH...POST-TROP/EXTRATROP 24H 12/0600Z 36.8N 82.6W 15 KT 15 MPH...POST-TROP/EXTRATROP 36H 12/1800Z 37.5N 79.1W 15 KT 15 MPH...POST-TROP/EXTRATROP 48H 13/0600Z...POST-TROP/EXTRATROP NNNN
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