ZCZC NFDTCPAT2 ALL TTAA00 KWNH DDHHMM BULLETIN Post-Tropical Cyclone Bertha Advisory Number 5 NWS Weather Prediction Center College Park MD AL022020 500 AM EDT Thu May 28 2020 ...BERTHA BECOMES EXTRATROPICAL AS IT LIFTS QUICKLY NORTHWARD... ...LOCALLY HEAVY RAIN AND FLOODING STILL POSSIBLE... SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...38.3N 80.8W ABOUT 80 MI...130 KM NNW OF ROANOKE VIRGINIA MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H PRESENT MOVEMENT...N OR 10 DEGREES AT 28 MPH...44 KM/H MINIMUM CENTRAL PRESSURE...1012 MB...29.89 INCHES WATCHES AND WARNINGS -------------------- Flash Flood Watches are in effect for central West Virginia and a small part of coastal North Carolina through early morning. DISCUSSION AND OUTLOOK ---------------------- At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Bertha was located near latitude 38.3 North, longitude 80.8 West. The post-tropical cyclone is moving toward the north near 28 mph (44 km/h) and this motion is expected to continue through midday Thursday, followed by a turn to the north-northeast. Maximum sustained winds are near 25 mph (35 km/h) with higher gusts. Bertha is expected to weaken and dissipate by Thursday evening as it crosses the eastern Great Lakes. The estimated minimum central pressure is 1012 mb (29.89 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Bertha is expected to produce total rain accumulations of around one inch from West Virginia through eastern Ohio, southern and western Pennsylvania and far western New York, and 1 to 2 inches from South Carolina across eastern North Carolina into southeast Virginia. Isolated maximum storm total amounts of 4 inches are possible in southern Pennsylvania and parts of the Carolinas and southeast Virginia. This rainfall may produce life threatening flash flooding, aggravate and prolong ongoing river flooding, and produce rapid out of bank rises on smaller rivers. WIND: Gusty winds are possible across the higher elevations of southwest Virginia and West Virginia as Bertha progresses across the Appalachians. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Burke FORECAST POSITIONS AND MAX WINDS INIT 28/0900Z 38.3N 80.8W 20 KT 25 MPH...POST-TROP/EXTRATROP 12H 28/1800Z 41.8N 80.0W 15 KT 20 MPH...POST-TROP/EXTRATROP 24H 29/0600Z...DISSIPATED NNNN