Sterling Rescue Water Rescue Team

* Flash Flood Warning for...
Northwestern Howard County in central Maryland...
Montgomery County in central Maryland...
Southern Frederick County in north central Maryland...
Loudoun County in northern Virginia...

* Until 245 AM EDT

* At 1050 PM EDT, Doppler radar indicated heavy rain across the area.
Up to two inches of rain have already fallen. Additional rainfall
amounts of two inches are possible. Flash flooding is expected to
begin shortly.

* Some locations that may experience flooding include...
Germantown, Rockville, Gaithersburg, Leesburg, Olney, Damascus,
Lansdowne, Lowes Island, Poolesville, Aspen Hill, Ashburn,
Montgomery Village, North Potomac, Redland, Colesville,
Countryside, Purcellville, Brunswick, Round Hill and Rossmoor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3908 7698 3902 7793 3909 7786 3911 7785
3914 7782 3920 7780 3932 7771 3935 7706

HEAVY RAINFALL POTENTIAL | MONDAY .... Thunderstorms this afternoon and evening will likely produce TORRENTIAL DOWNPOURS in the "High" and "Very High" area.

While the "Flash Flood Guidance" is showing 1.5 to 3 inches in a 1 to 3 hour period (the amount of rain it would take in that duration to produce flash flooding), very high dew points in the mid 70's and Precipitable Water ranging 2 to 3 inches are strong indicators of a heavy rainfall potential. Watch for rapidly rising creeks and streams, and flooding across low-lying and poor drainage areas.