Next Storm System Arrives Tonight

Hello everyone!

Our next storm system will arrive from the west tonight as low pressure moves towards the Adirondacks. Expect any morning breaks of sun to quickly transition to overcast skies this afternoon. Precip will arrive in western NH this evening before moving into Maine a little before midnight. Precip will start as snow for everyone away from the NH Seacoast. Snow will then change to rain along the coast south of Portland (east of the Turnpike) and along the Midcoast (SE of Route 1) with minimal accumulations there. 1-3″ will be on the ground around midnight for most areas, so be very careful if you’re travelling back from NYE festivities!

After midnight, snow will change over to mixed precip in NH, with the mix line creeping east during the early morning hours. I am very skeptical of surface warmth making it very far inland, but areas east of the Turnpike as well as Southern NH should see a change to rain by sunrise tomorrow morning. Other areas will see a mix of sleet and freezing rain, while only the far NW mountains (near Sugarloaf) hold onto all snow. Total accumulations will range from nothing on the NH seacoast to 1-3″ for the rest of the coast, 3-6″ for areas just inland, 4-8″ for the foothills, and 6-10″ for the mountains. These amounts will be highest in NE parts of each zone (less mix) and lower in SW parts of each zone (more sleet/ice vs pure snow).

High temps today will range from 25 in the north to 35 in the south.

-Jack

Morning Snow Showers Clear Out This Afternoon

Hello everyone!

High pressure will be the dominant force in our weather for most of the day today, but first we’ll be dealing with some snow showers this morning as a weak upper level disturbance moves through. These snow showers won’t amount to anything in terms of accumulation, but they’ll be just enough to put some flakes in the air especially in southern/western parts of the area. Look for skies to clear later this morning, with sunshine out in full force by this afternoon. High temps will be cool, ranging from 15 in the north to around freezing in Southern NH.

Our next storm arrives New Year’s Day with inland snow and coastal rain.

-Jack

Cold Front Brings Drier Weather For All, Warmer Weather For Some

Hello everyone!

A cold front is working its way south through the area this morning as yesterday’s storm system moves off into the Canadian Maritimes. While this front will bring cooler and drier weather to the whole area tomorrow, its impacts will be more location-specific today.

The mountains will see a drop in temps, with any remaining above-freezing areas dropping below 32 in the next few hours. Upsloping will produce plenty of clouds along with a few snow showers in the favored areas. Temps will be falling through the 20’s by this evening.

The foothills will actually see temps *rise* as the front pushes through. Why? Yesterday’s cold air damming is still here, meaning a very shallow layer of cold air exists below much warmer air just aloft. When the front arrives, its turbulence will mix that warmer air down much faster than the new cold air can be moved into the area. As a result, any remaining below-freezing areas will see temps spike into the mid/upper 30’s for a few hours this afternoon under partly sunny skies.

The coastline will see a few showers early this morning as the front moves through, followed by drier conditions and sunnier skies. Temps will warm up nicely in a downsloping regime into the low to mid 40.

Our next storm arrives New Year’s Eve with snow in the mountains, a mix in the foothills, and rain along the coast.

-Jack

Morning Snow Gradually Gives Way To Afternoon Rain/Mix

Hello everyone!

Today will feature morning snow across the area before a transition to rain and mixed precipitation this afternoon. The transition to rain is already well underway along the coast as temps warm above freezing with SE winds. Inland, however, is a different story. As those SE winds try to move away from the coast, they encounter a bubble of cold air “dammed” against the higher terrain. This bubble of cold air will keep precip types frozen into this afternoon even as warm air rushes in aloft. As a result, the foothills and mountains can expect a period of sleet and freezing rain to follow this morning’s snow before precip tapers off into showers this afternoon.

High temps will range from 30 in the north to 50 in SE NH.

-Jack

Clouds Increase This Afternoon

Hello everyone!

Clouds will slowly increase this afternoon as our next storm system slowly approaches from the west. In the meantime though, a few hours of sunny skies will be available this morning, and the storm’s precipitation will hold off until late tonight. Look for high temps ranging from 15 in the north to 30 in the south with light northwest winds this morning becoming calm this afternoon. Enjoy the beautiful day and get outside if you can!

Snow arrives from west to east tonight around/a little after midnight. Look for a general 1-3″ away from the immediate coast before a change to sleet progresses from west to east mid-morning. During that time, the rain/frozen line will be advancing northward through the coastal plain but will get hung up in the foothills as weak cold air damming establishes itself. This isn’t a classic CAD setup as there’s no high pressure to the north that’s able to feed cold dry air in, but it should be at least good enough for a delayed rain transition, and thus icy roads for the morning commute. Residual rain/freezing rain will clear out Friday night with a cold front re-establishing our seasonal temps Saturday.

-Jack

More Upslope/Downslope Today

Hello everyone!

Today will feature a continuation of our favorite upslope/downslope pattern as a weak disturbance passes overhead and establishes NW flow. The disturbance will be too moisture-starved to bring any precip downwind of the mountains, but a few inches of upslope snow can be expected in the favored areas. Skies will be sunnier downwind of the mountains with overcast conditions along the higher terrain. Temps will range from 20 in the north to 30 in the south.

-Jack

Cool And Clear Today

Hello everyone and Merry Christmas to all those celebrating!

Today will feature cool and clear weather across the area as Canadian high pressure moves overhead. Look for mostly sunny skies, light NW winds, and a lack of precipitation. Those light NW winds will keep a few more clouds in the mix in the favored upslope areas, but even there the sun should make an appearance by the afternoon hours. Temps will be seasonably cool, ranging from 15 in the north to 35 in the south.

Enjoy the lovely Christmas weather, hopefully Santa will deliver on our requests for snow to start off the new year!

-Jack