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| #1154295 (Received by flhurricane at: 5:04 AM 24.Sep.2023) TCPAT1 BULLETIN Post-Tropical Cyclone Ophelia Advisory Number 12 NWS Weather Prediction Center College Park MD AL162023 500 AM EDT Sun Sep 24 2023 ...POST-TROPICAL OPHELIA CONTINUES TO POSE A RISK OF COASTAL FLOODING AND LOCALLY HEAVY RAIN FROM WASHINGTON D.C. TO NEW YORK CITY TODAY... SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...37.7N 77.3W ABOUT 85 MI...135 KM S OF WASHINGTON D.C. MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: Flash flood watches have expired. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: Coastal flood warnings and advisories remain in effect for portions of the U.S. Mid-Atlantic. DISCUSSION AND OUTLOOK ---------------------- At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Ophelia was located near latitude 37.7 North, longitude 77.3 West. The post-tropical cyclone is moving toward the north-northeast near 12 mph (19 km/h) and this motion is expected to continue today before a turn to the east tonight. Maximum sustained winds are near 25 mph (35 km/h) with higher gusts. A gradual weakening is forecast during the next 48 hours as the low center moves slowly offshore. The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Ophelia can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC, and on the web at hurricanes.gov/text/MIATCDAT1.shtml STORM SURGE: Water levels remain elevated within portions of Chesapeake Bay and its tidal rivers but should gradually recede through today. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Ophelia is expected to produce the following additional rainfall through late this coming night: Portions of the Mid-Atlantic to southern New England…1 to 3 inches This rainfall may produce localized flash, urban, and small stream flooding impacts across portions of the Mid-Atlantic region into southern New England. Isolated river flooding is possible in areas of heavier rainfall. SURF: Swells generated by Ophelia will continue to affect much of the east coast of the United States through today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- This is the last public advisory issued by the Weather Prediction Center on this system. $$ Forecaster Carbin |
