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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Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.02°NLon: -75.7°WElev: 288ft.

Partly Cloudy

11°F

-12°C

Humidity 40%
Wind Speed NW 16 G 30 mph
Barometer 30.28 in (1025.8 mb)
Dewpoint -9°F (-23°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 13 Feb 5:54 pm EST
Extended Forecast for

Downingtown PA

Wind Chill Advisory until February 14, 09:00am
Click here for hazard details and duration
Wind Chill Advisory
  •  
    Wind Chill Advisory until February 14, 09:00am

    NOW until
    9:00am Sun

    Wind Chill Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 1. Wind chill values as low as -13. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 32 mph.

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

    Low: 1 °F

  • Sunday

    Sunday: Sunny, with a high near 16. Wind chill values as low as -13. Northwest wind 7 to 11 mph.

    Sunny

    High: 16 °F

  • Sunday
    Night

    Sunday Night: A slight chance of snow after 4am.  Increasing clouds, with a low around 11. Light and variable wind.  Chance of precipitation is 20%.

    Partly Cloudy
    then Slight
    Chance Snow

    Low: 11 °F

  • Washington's
    Birthday

    Washington's Birthday: Snow, mainly after 7am.  High near 33. Southeast wind around 6 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Snow

    High: 33 °F

  • Monday
    Night

    Monday Night: Rain, snow, freezing rain, and sleet before 1am, then rain or freezing rain between 1am and 3am, then rain after 3am.  Low around 31. Light and variable wind becoming southeast around 5 mph.  Chance of precipitation is 90%. Little or no ice accumulation expected.  New snow and sleet accumulation of 1 to 2 inches possible.

    Wintry Mix

    Low: 31 °F

  • Tuesday

    Tuesday: Rain, mainly before 11am. The rain could be heavy at times.  High near 48. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Heavy Rain
    then Chance
    Rain

    High: 48 °F

  • Tuesday
    Night

    Tuesday Night: A chance of rain before 1am, then a chance of rain and snow between 1am and 2am, then a chance of snow after 2am.  Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Mostly Cloudy
    then Chance
    Rain/Snow

    Low: 32 °F

  • Wednesday

    Wednesday: A chance of snow before 10am, then a chance of rain.  Partly sunny, with a high near 43. Chance of precipitation is 30%.

    Chance
    Rain/Snow
    then Chance
    Rain

    High: 43 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 1. Wind chill values as low as -13. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 16. Wind chill values as low as -13. Northwest wind 7 to 11 mph.
Sunday Night
A slight chance of snow after 4am. Increasing clouds, with a low around 11. Light and variable wind. Chance of precipitation is 20%.
Washington's Birthday
Snow, mainly after 7am. High near 33. Southeast wind around 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Rain, snow, freezing rain, and sleet before 1am, then rain or freezing rain between 1am and 3am, then rain after 3am. Low around 31. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 90%. Little or no ice accumulation expected. New snow and sleet accumulation of 1 to 2 inches possible.
Tuesday
Rain, mainly before 11am. The rain could be heavy at times. High near 48. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
A chance of rain before 1am, then a chance of rain and snow between 1am and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
A chance of snow before 10am, then a chance of rain. Partly sunny, with a high near 43. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
Sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Mostly cloudy, with a high near 51.
Click Map For Forecast
Point Forecast:
Downingtown PA
 40.02°N 75.7°W (Elev. 338 ft)
3:37 pm EST Feb 13, 2016
6pm EST Feb 13, 2016-6pm EST Feb 20, 2016
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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