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Merrimack Police Department
Thursday March 30th, 2017 :: 04:00 p.m. EDT


Winter Storm Warning until 04:00PM Saturday

...Late season winter storm Friday into Saturday, uncertainties remain... .Low pressure will develop over the Mid Atlantic states tonight and Friday which will then move northeastward to south of Cape Cod Saturday before departing out to sea thereafter. There remains a considerable amount of uncertainty in snow amounts even with the storm beginning Friday morning for portions of the forecast area. The northward and eastward extent of heavy snowfall is still uncertain at this time due to continued uncertainties in storm track. Also, warm air aloft may work in for a time allowing for mixing with sleet across southern New Hampshire and southernmost Maine. These factors will have fairly large ramifications for either higher or lower snow totals than forecast. However, confidence is high enough in the occurrence of a significant snowfall to issue a winter storm warning in western and southwestern New Hampshire for Friday and Saturday. Otherwise, confidence is not quite high enough for the rest of the watch area at this time but a significant snowfall remains possible. In addition, the snow will likely be heavy and wet so power outages will be possible depending on how much snow falls. ...WINTER STORM WARNING IN EFFECT FROM 8 AM FRIDAY TO 4 PM EDT SATURDAY... The National Weather Service in Gray has issued a Winter Storm Warning for heavy snow...which is in effect from 8 AM Friday to 4 PM EDT Saturday. The Winter Storm Watch is no longer in effect.

* HAZARD TYPES...Heavy snow possibly mixing with sleet at times.

* Accumulations...Snow accumulation of 8 to 12 inches...with locally higher amounts possible.

* TIMING...Snow will begin early Friday morning across southwestern New Hampshire then move northeastward, covering the rest of the warning area by mid to late morning. The snow may not accumulate on roads at lower elevations until later afternoon or evening. The snow will increase in intensity Friday evening and overnight before ending around midday Saturday.

* IMPACTS...Slippery roads and low visibilities. The snow will be heavy and wet, especially across southern New Hampshire where the potential for power outages will exist.

* Winds...East 5 to 10 mph with gusts up to 20 mph.

* Temperatures...Around 30.

* quarter mile or less at times.



A Winter Storm Warning for heavy snow means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous. Only travel in an emergency. If you must travel...keep an extra flashlight... food...and water in your vehicle in case of an emergency. For a more precise forecast for your specific location...go to

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Merrimack Police Department
31 Baboosic Lake Rd
Merrimack, NH 03054

Emergency: 9-1-1
Non-emergencies: 603-424-3774

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Alert Details

Moderate - Possible threat to life or property
Expected - Responsive action SHOULD be taken soon (within next hour)
Likely (p > ~50%)
Meteorological (inc. flood)
Winter Storm Warning

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