National Weather Service says up to two and a half inches of rain is possible.
Flood Watch
Flood Watch National Weather Service Baltimore MD/Washington DC 1129 AM EDT Fri Mar 22 2024 MDZ004>006-016>018-503-505-507-VAZ038>040-050-051-055-056-501-502- 505-506-526-527-222330- /O.EXA.KLWX.FA.A.0006.240323T0600Z-240323T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Frederick MD-Carroll-Northern Baltimore-Charles-St. Marys-Calvert- Northwest Montgomery-Northwest Howard-Northwest Harford-Greene- Madison-Rappahannock-Orange-Culpeper-Stafford-Spotsylvania- Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- Including the cities of Dunkirk, Damascus, Montclair, Stanardsville, Reisterstown, Orange, Culpeper, Sterling, Gordonsville, Manassas, Huntingtown, Cockeysville, Frederick, Washington, Warrenton, California, Ballenger Creek, Lake Ridge, North Beach, Chesapeake Beach, Ashburn, Haymarket, Lusby, Lisbon, Dale City, Waldorf, Jarrettsville, Leesburg, St. Charles, Lexington Park, Prince Frederick, Falmouth, Purcellville, Woodbridge, Turnbull, Eldersburg, Westminster, Germantown, Fredericksburg, and Madison 1129 AM EDT Fri Mar 22 2024 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Maryland, including the following areas, Calvert, Carroll, Charles, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery and St. Marys and Virginia, including the following areas, Central and Southeast Prince William/Manassas/Manassas Park, Culpeper, Eastern Loudoun, Greene, Madison, Northern Fauquier, Northwest Prince William, Orange, Rappahannock, Southern Fauquier, Spotsylvania, Stafford and Western Loudoun. * WHEN...From late tonight through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Rainfall of 1.5 to 2.5 inches is most likely late tonight through Saturday morning. Rain will depart by Saturday afternoon. The bulk of the rain is expected to fall overnight tonight into early Saturday morning within roughly a six hour window. This may result in flooding of urban and poor drainage areas, as well as on smaller streams. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. By The National Weather Service, Sterling, Va.