Heavy Rain and Flash Flooding Possible in Portions of the Southeast, Mid-Atlantic and Appalachians. A Few Severe Thunderstorms Possible in the West and Northwest

Rain and thunderstorms are expected over much of the Southeast, Mid-Atlantic, and central Appalachians. Locally heavy rain is possible, with flash flooding possible over some areas. A few severe thunderstorms will be possible over portions of the western and northwestern U.S. today and Friday.
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Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

24°C

75°F

Humidity 41%
Wind Speed E 17 km/h
Barometer 29.92 in
Dewpoint 10°C (50°F)
Visibility 16 km
Last update 5 May 5:15 pm MDT
Extended Forecast for

Lead SD

  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms.  Mostly sunny, with a steady temperature around -4. East wind around 10 km/h.  Chance of precipitation is 20%.

    Isolated
    T-storms

    High: 24 °C

  • Tonight

    Tonight: Partly cloudy, with a low around 12. East wind 8 to 13 km/h becoming southwest after midnight.

    Partly Cloudy

    Low: 12 °C

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 3pm.  Partly sunny, with a high near 23. West wind 8 to 13 km/h becoming north 16 to 21 km/h in the morning. Winds could gust as high as 29 km/h.

    Mostly Sunny
    then Chance
    T-storms

    High: 23 °C

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms, then showers likely after midnight.  Cloudy, with a low around 6. Northeast wind 13 to 16 km/h.  Chance of precipitation is 70%.

    Chance
    T-storms then
    Showers
    Likely

    Low: 6 °C

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before noon.  Mostly cloudy, with a high near 13. East wind 16 to 23 km/h, with gusts as high as 32 km/h.

    Chance
    Showers

    High: 13 °C

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 3. Southeast wind 14 to 23 km/h, with gusts as high as 32 km/h.

    Slight Chance
    Showers

    Low: 3 °C

  • Sunday

    Sunday: A 20 percent chance of showers.  Partly sunny, with a high near 13.

    Slight Chance
    Showers

    High: 13 °C

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 4.

    Mostly Cloudy

    Low: 4 °C

  • Monday

    Monday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 15. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 15 °C

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny, with a steady temperature around -4. East wind around 10 km/h. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 12. East wind 8 to 13 km/h becoming southwest after midnight.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 23. West wind 8 to 13 km/h becoming north 16 to 21 km/h in the morning. Winds could gust as high as 29 km/h.
Friday Night
A chance of showers and thunderstorms, then showers likely after midnight. Cloudy, with a low around 6. Northeast wind 13 to 16 km/h. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 13. East wind 16 to 23 km/h, with gusts as high as 32 km/h.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 3. Southeast wind 14 to 23 km/h, with gusts as high as 32 km/h.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 13.
Sunday Night
Mostly cloudy, with a low around 4.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 15. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 3.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 9. Chance of precipitation is 60%.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 1.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 9.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 1.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 12.
Click Map For Forecast
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 1622 m)
3:58 pm MDT May 5, 2016
5pm MDT May 5, 2016-6pm MDT May 12, 2016
 
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Additional Resources

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