Post-Tropical Cyclone Ida Public Advisory Number 26
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000 WTNT34 KWNH 011448 TCPAT4 BULLETIN Post-Tropical Cyclone Ida Advisory Number 26 NWS Weather Prediction Center College Park MD AL092021 1100 AM EDT Wed Sep 01 2021 ...IDA NOW EXTRATROPICAL WITH WIDESPREAD HEAVY RAIN AND AREAS OF LIFE THREATENING FLASH FLOODING TODAY AND TONIGHT NEAR THE TRACK... ...AN ENHANCED RISK FOR SEVERAL TORNADOES ACROSS PARTS OF THE MID-ATLANTIC THIS AFTERNOON AND EVENING... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...38.3N 80.2W ABOUT 45 MI...70 KM SSW OF ELKINS WEST VIRGINIA ABOUT 70 MI...110 KM N OF ROANOKE VIRGINIA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...ENE OR 60 DEGREES AT 25 MPH...41 KM/H MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES WATCHES AND WARNINGS -------------------- Flood and Flash Flood Watches are in effect for portions of the central Appalachians, Mid-Atlantic, and into southern New York and southern New England. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM EDT (1500 UTC), the center of Post-Tropical Cyclone Ida was located near latitude 38.3 North, longitude 80.2 West. The post-tropical cyclone is moving toward the east-northeast near 25 mph (41 km/h) and this motion is expected to continue. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Some strengthening is forecast later today and tonight as Ida moves offshore. The estimated minimum central pressure is 1000 mb (29.53 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Post-Tropical Cyclone Ida will produce the following rainfall totals: Mid Atlantic to Southern New England: 3 to 8 inches with isolated higher amounts through Thursday. Significant and life-threatening flash flooding is likely from the Mid-Atlantic into southern New England, especially across highly urbanized metropolitan areas and areas of steep terrain. Widespread moderate and major river flooding impacts are forecast from northern West Virginia and western Maryland into southern Pennsylvania and New Jersey, particularly in the Monongahela, Potomac, Susquehanna, Delaware, lower Hudson and Coastal Connecticut river basins. Widespread minor to isolated major river flooding is occurring or forecast from the Lower Mississippi Valley into far western Alabama and northeast Georgia. Rivers will remain elevated into next week. For the latest rainfall reports and wind gusts associated with Post-Tropical Cyclone Ida, see the companion storm summary at WBCSCCNS4 with the WMO header of ACUS44 KWBC or at the following link: www.wpc.ncep.noaa.gov/discussions/nfdscc4.html TORNADOES: Several tornadoes are probable across portions of the Mid Atlantic today, mainly during the afternoon and evening hours. NEXT ADVISORY ------------- Next complete advisory at 500 PM EDT. $$ Forecaster Churchill FORECAST POSITIONS AND MAX WINDS INIT 01/1500Z 38.3N 80.2W 25 KT 30 MPH...POST-TROP/EXTRATROP 12H 02/0000Z 40.0N 76.0W 30 KT 35 MPH...POST-TROP/EXTRATROP 24H 02/1200Z 42.5N 70.3W 35 KT 40 MPH...POST-TROP/EXTRATROP 36H 03/0000Z 44.9N 65.8W 35 KT 40 MPH...POST-TROP/EXTRATROP