Wintry weather for Midwest, Ohio Valley; Bitter cold for Northeast

A bitterly cold airmass has invaded the eastern U.S this weekend bringing the coldest temperatures of the season. Gusty winds will combine with these cold temperatures to create dangerous wind chills well below zero in many parts of the Northeast. Meanwhile, a developing storm in the Plains will bring wintry precipitation to the Midwest and Ohio Valley on Sunday.
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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.95°NLon: -73.05°WElev: 98ft.

Fair

11°F

-12°C

Humidity 40%
Wind Speed N 14 mph
Barometer 30.47 in (1032.0 mb)
Dewpoint -9°F (-23°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 14 Feb 1:56 pm EST
Extended Forecast for

Port Jefferson NY

  • This
    Afternoon

    This Afternoon: Sunny and cold, with a high near 11. Wind chill values between -5 and -10. Northwest wind 11 to 15 mph.

    Cold

    High: 11 °F

  • Tonight

    Tonight: Mostly clear, with a low around 5. Wind chill values between zero and 5. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Mostly Clear

    Low: 5 °F

  • Washington's
    Birthday

    Washington's Birthday: Snow likely, mainly after 4pm.  Increasing clouds, with a high near 36. Wind chill values between 10 and 20. Calm wind becoming south 5 to 9 mph in the afternoon.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Chance Snow
    then Snow
    Likely

    High: 36 °F

  • Monday
    Night

    Monday Night: Rain and snow likely, possibly mixed with freezing rain before 7pm, then rain likely, possibly mixed with freezing rain between 7pm and 10pm, then rain after 10pm.  Temperature rising to around 44 by 5am. Southeast wind 7 to 10 mph.  Chance of precipitation is 80%. Little or no ice accumulation expected.  New snow accumulation of less than a half inch possible.

    Wintry Mix
    Likely then
    Rain

    Low: 33 °F

  • Tuesday

    Tuesday: Rain. The rain could be heavy at times.  High near 54. Breezy, with a south wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon.  Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Heavy Rain
    and Breezy

    High: 54 °F

  • Tuesday
    Night

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

    Chance
    Showers then
    Chance
    Rain/Snow

    Low: 32 °F

  • Wednesday

    Wednesday: A chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 11am, then a chance of rain showers after 11am.  Partly sunny, with a high near 43. Chance of precipitation is 30%.

    Chance
    Rain/Snow
    then Chance
    Showers

    High: 43 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 26.

    Partly Cloudy

    Low: 26 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 32.

    Mostly Sunny

    High: 32 °F

Detailed Forecast

This Afternoon
Sunny and cold, with a high near 11. Wind chill values between -5 and -10. Northwest wind 11 to 15 mph.
Tonight
Mostly clear, with a low around 5. Wind chill values between zero and 5. Northwest wind 5 to 7 mph becoming calm in the evening.
Washington's Birthday
Snow likely, mainly after 4pm. Increasing clouds, with a high near 36. Wind chill values between 10 and 20. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday Night
Rain and snow likely, possibly mixed with freezing rain before 7pm, then rain likely, possibly mixed with freezing rain between 7pm and 10pm, then rain after 10pm. Temperature rising to around 44 by 5am. Southeast wind 7 to 10 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Tuesday
Rain. The rain could be heavy at times. High near 54. Breezy, with a south wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Wednesday
A chance of snow showers before 9am, then a chance of rain and snow showers between 9am and 11am, then a chance of rain showers after 11am. Partly sunny, with a high near 43. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Mostly clear, with a low around 22.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
A chance of showers. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
12:25 pm EST Feb 14, 2016
2pm EST Feb 14, 2016-6pm EST Feb 20, 2016
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database