New event. Flash Flood Watch from 9/8/2021 8:00 PM to 9/9/2021 2:00 AM EDT for Central Maryland, Delmarva/Southern MD, Southern PA. More information.
Interactive NWS Alert
Radar valid at 200 am EDT, Sep 9th 2021
Frederick MD-Carroll-Northern Baltimore-Cecil-Southern Baltimore-
Northwest Montgomery-Central and Southeast Montgomery-Northwest
Howard-Central and Southeast Howard-Northwest Harford-Southeast
Including the cities of Reisterstown, Columbia, Silver Spring,
Jarrettsville, Eldersburg, Rockville, Ellicott City, Frederick,
Westminster, Damascus, Cockeysville, Elkton, Aberdeen, Bethesda,
Lisbon, Gaithersburg, Ballenger Creek, Germantown, and Baltimore
611 PM EDT Wed Sep 8 2021
...FLASH FLOOD WATCH IN EFFECT UNTIL 2 AM EDT THURSDAY...
The National Weather Service in Sterling Virginia has issued a
* Flash Flood Watch for portions of central Maryland, north central
Maryland, northeast Maryland and northern Maryland, including the
following areas: in central Maryland, Central and Southeast
Howard, Central and Southeast Montgomery, Northwest Howard and
Northwest Montgomery. In north central Maryland, Carroll and
Frederick MD. In northeast Maryland, Cecil. In northern Maryland,
Northern Baltimore, Northwest Harford, Southeast Harford and
* Until 2 AM EDT Thursday.
* Showers and scattered thunderstorms are expected tonight. Average
rainfall amounts of one-half to one inch is expected. However,
thunderstorms will contain very heavy rainfall with rainfall rates
around 1 to 3 inches per hour. Localized rainfall amounts of 2 to
4 inches are possible.
* Heavy amounts of rain in a short period of time may cause creeks
and streams to rapidly rise out of their banks as well as the
potential for flash-flooding in urban areas.
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
iNWS is an experimental service intended for NWS core partners,
including emergency managers, community leaders and other government