Public Tropical Cyclone Advisory
458 WTNT34 KWNH 101534 TCPAT4 BULLETIN Post-Tropical Cyclone Isaias Advisory Number 16 NWS Weather Prediction Center College Park MD AL092026 1000 AM CDT Sat Oct 10 2026 ...FLASH FLOODING RISK CONTINUES WITH ISAIAS... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...32.8N 86.8W ABOUT 50 MI...80 KM S OF BIRMINGHAM ALABAMA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNW OR 335 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- SUMMARY OF WATCHES AND WARNINGS IN EFFECT: Flood Watches are in effect for... * Portions of the Southeast United States * Southern Appalachians High Wind Warning is in effect for... * Northeast Alabama, northern Georgia, southern Appalachians Wind Advisory is in effect for... * Much of the remainder of the Southeast United States DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Post-Tropical Cyclone Isaias was located near latitude 32.8 North, longitude 86.8 West. The post-tropical cyclone is moving toward the north-northwest near 10 mph (17 km/h) and this motion is expected to continue today, with a turn to the northeast tonight into Sunday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts, especially in areas of elevated terrain. Wind gusts may increase during the day today, with weakening speeds expected tonight into Sunday. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Isaias can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC. RAINFALL: Rainfall totals of 3 to 6 inches with localized maximum amounts of 10 inches are possible across the Southern Appalachians from northeast Georgia into the western Carolinas and from the upper coast of South Carolina into eastern North Carolina. Additional rainfall totals of 1 to 2 inches possible across the remainder of the Southeast into northern Florida. Flash, urban, and river flooding is possible across the region, with considerable impacts, including landslides, possible across the southern Appalachians. Significant river flooding across the western Florida Panhandle will crest today through Sunday. For a complete depiction of forecast rainfall associated with Isaias, please see the National Weather Service Storm Total Rainfall Graphic available at hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at4.shtml?ero. TORNADOES: A couple of tornadoes are possible today across eastern Georgia and the Carolinas. WIND: Strong wind gusts continue to pose a threat across the southeastern United States today, including Georgia, the southern Appalachians, and extending west through much of central and northern Alabama, Mississippi, and Tennessee. Scattered power outages and downed trees and powerlines may occur, with the risk highest in elevated terrain. SURF: Swells from Isaias will continue to affect much of the Gulf coasts of the United States, Mexico, and western Cuba this weekend. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. A depiction of rip current risk for the United States can be found at: hurricanes.gov/graphics_at4.shtml?ripCurrents NEXT ADVISORY ------------- Next complete advisory at 400 PM CDT.