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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.75°NLon: -73.01°WElev: 98ft.

Overcast

23°F

-5°C

Humidity 50%
Wind Speed SW 15 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 12 Feb 2:56 pm EST
Extended Forecast for

Patchogue NY

Wind Chill Advisory February 13, 04:00pm until February 14, 12:00pm
Click here for hazard details and duration
Wind Chill Advisory
  • Tonight

    Tonight: A slight chance of snow showers after 7pm.  Cloudy, with a low around 18. Wind chill values between 5 and 15. West wind 7 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers

    Low: 18 °F

  • Saturday

    Saturday: A slight chance of snow showers before 3pm.  Mostly cloudy and cold, with a temperature falling to around 13 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 18 to 28 mph, with gusts as high as 41 mph.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers
    and Windy

    High: 19 °F

  • Saturday
    Night

    Saturday Night: A slight chance of snow showers between 7pm and 8pm.  Partly cloudy, with a low around 2. Wind chill values between -10 and -20. Windy, with a northwest wind 22 to 26 mph, with gusts as high as 44 mph.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers
    and Windy

    Low: 2 °F

  • Sunday

    Sunday: Sunny and cold, with a high near 15. Wind chill values between -10 and -20. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 34 mph.

    Sunny and
    Blustery then
    Sunny

    High: 15 °F

  • Sunday
    Night

    Sunday Night: Increasing clouds, with a low around 14. Northwest wind 5 to 10 mph becoming light west  after midnight.

    Increasing
    Clouds

    Low: 14 °F

  • Washington's
    Birthday

    Washington's Birthday: Snow likely, mainly after 3pm.  Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Slight Chance
    Snow then
    Snow Likely

    High: 36 °F

  • Monday
    Night

    Monday Night: Rain likely, mainly after midnight.  Cloudy, with a low around 32. Chance of precipitation is 70%.

    Rain Likely

    Low: 32 °F

  • Tuesday

    Tuesday: Rain likely.  Cloudy, with a high near 49. Chance of precipitation is 70%.

    Rain Likely

    High: 49 °F

  • Tuesday
    Night

    Tuesday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 36. Chance of precipitation is 60%.

    Rain Likely

    Low: 36 °F

Detailed Forecast

Tonight
A slight chance of snow showers after 7pm. Cloudy, with a low around 18. Wind chill values between 5 and 15. West wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
A slight chance of snow showers before 3pm. Mostly cloudy and cold, with a temperature falling to around 13 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 18 to 28 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of snow showers between 7pm and 8pm. Partly cloudy, with a low around 2. Wind chill values between -10 and -20. Windy, with a northwest wind 22 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 20%.
Sunday
Sunny and cold, with a high near 15. Wind chill values between -10 and -20. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 34 mph.
Sunday Night
Increasing clouds, with a low around 14. Northwest wind 5 to 10 mph becoming light west after midnight.
Washington's Birthday
Snow likely, mainly after 3pm. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 32. Chance of precipitation is 70%.
Tuesday
Rain likely. Cloudy, with a high near 49. Chance of precipitation is 70%.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Wednesday
A chance of rain after noon. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 39.
Click Map For Forecast
Point Forecast:
Patchogue NY
 40.75°N 73.01°W (Elev. 0 ft)
3:17 pm EST Feb 12, 2016
3pm EST Feb 12, 2016-6pm EST Feb 19, 2016
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database