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Severe weather possible for parts of eastern, north-central and southwestern U.S.

The NWS Storm Prediction Center is forecasting a risk of severe thunderstorms Tuesday afternoon across a large portion of the eastern U.S. from the Mid-Atlantic & Ohio Valley into the Deep South. Severe thunderstorms are also possible across parts of the northern Plains & southern Ariz. Damaging wind gusts & large hail will be the main threats with severe thunderstorms that develop in these areas.
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Current conditions at

Washington DC, Washington-Dulles International Airport (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

84°F

29°C

Humidity 55%
Wind Speed SW 13 mph
Barometer 29.79 in (1008.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 30 Jun 4:52 pm EDT
Extended Forecast for

Potomac MD

  • Tonight

    Severe Thunderstorms Chance for Measurable Precipitation 60%

    Severe
    Thunderstorms

    Low: 68 °F

  • Wednesday

    Chance Thunderstorms Chance for Measurable Precipitation 40%

    Chance
    Thunderstorms

    High: 86 °F

  • Wednesday
    Night

    Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

    Slight Chc
    Thunderstorms

    Low: 67 °F

  • Thursday

    Chance Showers Chance for Measurable Precipitation 30%

    Chance
    Showers

    High: 84 °F

  • Thursday
    Night

    Showers Likely Chance for Measurable Precipitation 60%

    Showers
    Likely

    Low: 67 °F

  • Friday

    Chance Showers Chance for Measurable Precipitation 40%

    Chance
    Showers

    High: 79 °F

  • Friday
    Night

    Chance Showers Chance for Measurable Precipitation 40%

    Chance
    Showers

    Low: 68 °F

  • Independence
    Day

    Chance Thunderstorms Chance for Measurable Precipitation 50%

    Chance
    Thunderstorms

    High: 81 °F

  • Saturday
    Night

    Chance Showers Chance for Measurable Precipitation 30%

    Chance
    Showers

    Low: 68 °F

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before midnight. Some storms could be severe, with damaging winds. Mostly cloudy, with a low around 68. South wind 5 to 9 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. West wind 5 to 9 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 67. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A chance of showers after noon. Increasing clouds, with a high near 84. Light and variable wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
Showers likely, mainly after midnight. Cloudy, with a low around 67. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Independence Day
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 69.
Monday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 71.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.
  Click Map For Forecast
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 ft)
4:38 pm EDT Jun 30, 2015
6pm EDT Jun 30, 2015-6pm EDT Jul 7, 2015
 
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