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Londonderry, NH Police Department
Thursday January 4th, 2018 :: 03:00 p.m. EST


Wind Chill Watch until 10:00AM Sunday

...POWERFUL COASTAL STORM CONTINUES TO BRING HEAVY SNOW AND STRONG WINDS WITH VERY COLD WIND CHILL VALUES TO FOLLOW... .Surface low pressure southeast of Cape Cod will track northeast toward the Bay of Fundy this evening, with very heavy snow and increasingly strong winds expected across Maine and New Hampshire to the northwest of the low track. Blizzard conditions are likely along the coastal plain, where the greatest combination of heavy snow and strong winds will line up to produce whiteout conditions at times. As the snow winds down this evening, the winds will continue to blow the snow around through the night. By Friday, much colder air will be pulled into the area with wind chill values as cold or colder than what was experienced last week. ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 4 AM EST FRIDAY... ...WIND CHILL WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SUNDAY MORNING...

* WHAT...Blizzard conditions occurring. Dangerously cold wind chills possible this weekend. Travel will be very dangerous to impossible through tonight. Tree branches could fall as well. Total snow accumulations of 12 to 18 inches are expected through tonight. Wind chill values this weekend could fall to as low as 35 below zero.

* WHERE...The interior coastal plain of New Hampshire and southwest Maine.

* WHEN...Blizzard conditions through late tonight. Dangerous wind chill values expected Friday through Sunday morning.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause whiteout conditions in blowing snow. Significant drifting of the snow is likely. Dangerously cold wind chills as low as 35 below zero this weekend will cause frostbite in as little as 10 minutes to exposed skin. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds and poor visibilities are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. For a more precise forecast for your specific location...go to A Wind Chill Watch means there is the potential for a combination of very cold air and the wind to create dangerously low wind chill values. Monitor the latest forecasts and warnings for updates on this situation.


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Londonderry, NH Police Department
268 Mammoth Rd
Londonderry, NH 03053

Emergency: 9-1-1
Non-emergencies: 603-432-1118

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Alert Details

Moderate - Possible threat to life or property
Future - Responsive action SHOULD be taken in the near future
Possible (p <= ~50%)
Meteorological (inc. flood)
Wind Chill Watch

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