Severe Thunderstorm and Flash Flood Threats Early This Week

The threat for severe thunderstorms and flash flooding are likely from the central and southern Plains into the Ohio/Tennessee Valleys and Mid-Atlantic early this week. A couple of slow moving systems will track west to east, while a plume of moisture focuses near a stalled front. Some of the thunderstorms could contain damaging winds and large hail, while flood watches extend from MO/IL to DE/NJ. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

89°F

32°C

Humidity 42%
Wind Speed Vrbl 5 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Jun 1:52 pm EDT
Extended Forecast for

Great Falls VA

  • This
    Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 4pm. Some of the storms could produce small hail and gusty winds.  Mostly cloudy, with a high near 85. Southwest wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely

    High: 85 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 11pm.  Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely then
    Slight Chance
    T-storms

    Low: 70 °F

  • Tuesday

    Tuesday: A slight chance of showers, then showers and thunderstorms likely after 11am.  Mostly cloudy, with a high near 84. West wind 3 to 6 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    T-storms
    Likely

    High: 84 °F

  • Tuesday
    Night

    Tuesday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm.  Cloudy, with a low around 70. Light south wind.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    T-storms
    Likely then
    Showers
    Likely

    Low: 70 °F

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 83. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    High: 83 °F

  • Wednesday
    Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am.  Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Showers
    Likely then
    Chance
    Showers

    Low: 69 °F

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm, mainly after 2pm.  Partly sunny, with a high near 86. Chance of precipitation is 60%.

    Showers
    Likely

    High: 86 °F

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 68 °F

  • Friday

    Friday: Mostly sunny, with a high near 81.

    Mostly Sunny

    High: 81 °F

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Some of the storms could produce small hail and gusty winds. Mostly cloudy, with a high near 85. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 11pm. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 84. West wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Cloudy, with a low around 70. Light south wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 82.
Click Map For Forecast
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
1:31 pm EDT Jun 17, 2019
2pm EDT Jun 17, 2019-6pm EDT Jun 23, 2019
 
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Additional Resources

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