Mar 13, 2015 8:53 PM
Update on Weekend Winter Storm for NH
NH1 Chief Meteorologist - NH1.com
Winter Storm WATCH in effect from the National Weather Service for Coos County from 8pm Saturday through 8pm Sunday.
Winter Weather ADVISORY in effect from the National Weather Service for Southern Grafton, Southern Carroll, Sullivan, Belknap, Strafford, Merrimack, Hillsborough, Cheshire, and Central/Western Rockingham County from 7am to 3pm Saturday. Additional counties may be put under an advisory later.
Look for light freezing rain, some sleet, and light snow to overspread much of NH after sunrise Saturday. After the noon hour, warmer air taking over at the surface and aloft will make for a change over to rain for many from the Lakes Region and points south. For these folks, rain continues into Saturday Evening while the Mountains and North Woods stay snow or a mix of snow, sleet, and freezing rain. The activity may taper a bit late Saturday Night into the wee hours of Sunday Morning.
After 2am Sunday, a second piece of energy with this storm system will swing through and to go along with it, colder air will build back in to the Granite State. This will allow for folks seeing rain to change back to snow and several hours of light snow or snow showers will be possible as we work through the day Sunday.
For snow accumulation, by Sunday PM, the Mountains and Great North Woods can expect 6"+. A narrow area between the Lakes and Mountains can expect 3"-6". For the Upper Valley, Lakes, and northern Merrimack Valley, look for 1"-3". Monadnock, southern Merrimack Valley, and Seacoast, less than 1".
Ice accumulation should be less than 0.10" for most, but the Mountains and Great North Woods could see a little more than 0.10".
Rainfall totals could be as high as 0.75" especially for far southern NH and the Seacoast.