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Very Heavy Rain, Severe Thunderstorms, and High Flash Flood Risk moves into the Mississippi Valley and Midwest

Thunderstorms, some severe, with very heavy rain have moved into the Mid South and Tennessee Valley today. Flash flooding and severe thunderstorms will be possible from the central Gulf Coast to the Upper Great Lakes. The greatest threat of excessive rains will be in portions of the Lower and Middle Mississippi Valleys. This storm system has a history of producing life threatening flash floods. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

83°F

28°C

Humidity 51%
Wind Speed S 13 G 18 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 30 Apr 6:52 pm EDT
Extended Forecast for

Great Falls VA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 7pm.  Mostly cloudy, with a low around 65. South wind 7 to 9 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Partly Cloudy

    Low: 65 °F

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 5pm.  Mostly cloudy, with a high near 81. South wind 14 to 17 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%.

    Mostly Cloudy
    then Chance
    T-storms

    High: 81 °F

  • Monday
    Night

    Monday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south wind 15 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely and
    Breezy then
    Chance
    Showers

    Low: 59 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 mph.

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

    High: 76 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 52. West wind 8 to 14 mph, with gusts as high as 21 mph.

    Partly Cloudy

    Low: 52 °F

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    Sunny

    High: 70 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers.  Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Chance
    Showers

    Low: 50 °F

  • Thursday

    Thursday: Showers likely.  Cloudy, with a high near 65. Chance of precipitation is 70%.

    Showers
    Likely

    High: 65 °F

  • Thursday
    Night

    Thursday Night: Showers likely.  Cloudy, with a low around 55. Chance of precipitation is 70%.

    Showers
    Likely

    Low: 55 °F

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 7pm. Mostly cloudy, with a low around 65. South wind 7 to 9 mph. Chance of precipitation is 20%.
Monday
A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 81. South wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Monday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 76. Breezy, with a west wind 15 to 20 mph, with gusts as high as 32 mph.
Tuesday Night
Partly cloudy, with a low around 52. West wind 8 to 14 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 70.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Thursday
Showers likely. Cloudy, with a high near 65. Chance of precipitation is 70%.
Thursday Night
Showers likely. Cloudy, with a low around 55. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 69. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Sunday
Sunny, with a high near 67.
Click Map For Forecast
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
2:24 pm EDT Apr 30, 2017
6pm EDT Apr 30, 2017-6pm EDT May 7, 2017
 
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