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| #940820 (Received by flhurricane at: 10:48 PM 17.Sep.2018) TCPAT1 BULLETIN Post-Tropical Cyclone Florence Advisory Number 75 NWS Weather Prediction Center College Park MD AL062018 1100 PM EDT Mon Sep 17 2018 ...FLORENCE IS AN ELONGATED LOW PRESSURE AREA AS IT CONTINUES TO PRODUCE HEAVY RAIN OVER PORTIONS OF THE MID-ATLANTIC STATES... SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...39.8N 80.2W ABOUT 20 MI...30 KM NW OF MORGANTOWN WEST VIRGINIA ABOUT 260 MI...420 KM W OF PHILADELPHIA PENNSYLVANIA MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H PRESENT MOVEMENT...NE OR 35 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. Flash flood watches are in effect from Maryland and northern Virginia northward into southern New York then eastward across portions of southern New England. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM EDT (0300 UTC), the center of Post-Tropical Cyclone Florence was located near latitude 39.8 North, longitude 80.2 West. The post-tropical cyclone is moving toward the northeast near 12 mph (19 km/h) and this motion is expected to become more easterly and quicker on Tuesday and Wednesday before Florence becomes absorbed by another low pressure area on Thursday. Maximum sustained winds are near 25 mph (35 km/h) with higher gusts. Some strengthening is forecast Tuesday night and Wednesday as the system transitions into an extratropical cyclone. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Florence is expected to produce heavy to excessive rainfall through Tuesday. Portions of the northern Mid- Atlantic states and southern New England are expected to receive an additional 2 to 4 inches of rain...with isolated maximum amounts of 6 inches possible. For more information on rainfall totals please see the Storm Summary available at www.wpc.ncep.noaa.gov/discussions/nfdscc4.html NEXT ADVISORY ------------- Next complete advisory at 500 AM EDT. $$ Forecaster Roth |