Flood Watch In Affect

It includes Frederick County, surrounding jurisdictions.

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Portions of Maryland, northern Virginia and panhandle West
  Virginia, including the following areas: in Maryland, Carroll,
  Cecil, Frederick MD, Northern Baltimore, Northwest Harford and
  Washington. In northern Virginia, Western Loudoun. In panhandle
  West Virginia, Berkeley, Jefferson and Morgan.

* WHEN...Through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Creeks and streams may rise out of their banks. Flooding may occur
  in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - Multiple rounds of scattered to numerous showers and
    thunderstorms are likely this afternoon and tonight. The most
    likely time period for thunderstorms producing heavy rain and
    potential flash flooding is this evening into the overnight,
    but thunderstorms could develop as early as this afternoon.
    Several inches of rain are possible in a short period of
    time, which would cause rapid rises of water.
  - http://www.weather.gov/safety/flood

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.