Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.35°NLon: -103.77°WElev: 3898ft.

Overcast

0°C

32°F

Humidity 87%
Wind Speed W 7 km/h
Barometer 30.33 in
Dewpoint -2°C (28°F)
Visibility NA
Wind Chill-3°C (27°F)
Last update 12 Feb 6:35 am MST
Extended Forecast for

Lead SD

  • Today

    Today: A 30 percent chance of snow, mainly before 11am.  Patchy fog before 11am.  Otherwise, cloudy, with a high near 2. Calm wind becoming southeast 5 to 10 km/h in the morning.

    Chance Snow
    and Patchy
    Fog

    High: 2 °C

  • Tonight

    Tonight: A chance of snow before 11pm, then patchy freezing drizzle.  Areas of fog after 11pm.  Otherwise, cloudy, with a low around -3. South wind 8 to 10 km/h.  Chance of precipitation is 30%.

    Patchy Wintry
    Mix and Areas
    Fog

    Low: -3 °C

  • Saturday

    Saturday: Areas of fog before 11am.  Otherwise, cloudy, with a high near 7. Southwest wind 5 to 10 km/h becoming northwest in the afternoon.

    Areas Fog
    then Cloudy

    High: 7 °C

  • Saturday
    Night

    Saturday Night: Rain and snow likely before 11pm.  Mostly cloudy, with a low around -1. West wind 14 to 23 km/h, with gusts as high as 32 km/h.  Chance of precipitation is 60%.

    Rain/Snow
    Likely then
    Mostly Cloudy

    Low: -1 °C

  • Sunday

    Sunday: A 20 percent chance of rain after 11am.  Mostly cloudy, with a high near 4. West wind 13 to 16 km/h.

    Slight Chance
    Rain

    High: 4 °C

  • Sunday
    Night

    Sunday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around -2. Northwest wind 11 to 13 km/h.

    Chance Snow

    Low: -2 °C

  • Washington's
    Birthday

    Washington's Birthday: A chance of rain and snow before 11am, then a chance of rain.  Mostly cloudy, with a high near 7. Chance of precipitation is 30%.

    Chance
    Rain/Snow
    then Chance
    Rain

    High: 7 °C

  • Monday
    Night

    Monday Night: A chance of rain before 11pm, then a chance of rain and snow.  Mostly cloudy, with a low around 1. Chance of precipitation is 30%.

    Chance
    Rain/Snow

    Low: 1 °C

  • Tuesday

    Tuesday: A 30 percent chance of rain.  Mostly cloudy, with a high near 9.

    Chance Rain

    High: 9 °C

Detailed Forecast

Today
A 30 percent chance of snow, mainly before 11am. Patchy fog before 11am. Otherwise, cloudy, with a high near 2. Calm wind becoming southeast 5 to 10 km/h in the morning.
Tonight
A chance of snow before 11pm, then patchy freezing drizzle. Areas of fog after 11pm. Otherwise, cloudy, with a low around -3. South wind 8 to 10 km/h. Chance of precipitation is 30%.
Saturday
Areas of fog before 11am. Otherwise, cloudy, with a high near 7. Southwest wind 5 to 10 km/h becoming northwest in the afternoon.
Saturday Night
Rain and snow likely before 11pm. Mostly cloudy, with a low around -1. West wind 14 to 23 km/h, with gusts as high as 32 km/h. Chance of precipitation is 60%.
Sunday
A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 4. West wind 13 to 16 km/h.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around -2. Northwest wind 11 to 13 km/h.
Washington's Birthday
A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 7. Chance of precipitation is 30%.
Monday Night
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 1. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of rain. Mostly cloudy, with a high near 9.
Tuesday Night
Mostly cloudy, with a low around 2.
Wednesday
Partly sunny, with a high near 10.
Wednesday Night
Mostly cloudy, with a low around 1.
Thursday
Partly sunny, with a high near 10.
Click Map For Forecast
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 1622 m)
6:56 am MST Feb 12, 2016
7am MST Feb 12, 2016-6pm MST Feb 18, 2016
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database