Today will feature a fast-moving snowstorm as low pressure rapidly traverses the state of Massachusetts. Radar imagery shows moderate/heavy snow banding well underway across the entire area this morning, perhaps with the exception of light snow along the Canadian border. Snow will continue to fall steadily through this afternoon, especially along Maine’s coastal plain. Farther south in NH, rain will mix with snow and lead to lower accumulations. Some mixing may also occur east of I-95 and south of Portland. Snow will taper off from west to east this afternoon. As the low rapidly intensifies offshore, heavier snow will linger along the coast into the early evening hours before departing around 6-7 PM.
The highest snow totals today will generally be found north and east of Portland where 4-8” will fall. This area will also include most of Cumberland County and northern York County, even those areas that are west of PWM. Amounts will slowly taper off W/NW of a Fryeburg/Waterville line, with only 1-3” expected along the Canadian border.
High temps today will range from 25 in the north to 35 in southeastern NH.
My apologies for the lack of post yesterday morning, I’m down at the American Meteorological Society’s Annual Meeting in Boston and had a few more meetings than were originally on my schedule. Anyways, today’s weather looks fairly tame across the region as westerly winds carry drier, but not colder, air into the region. As per usual, westerly flow means we’ll have a classic upslope/downslope pattern set up where clouds stick around in the mountains while the coastal plain enjoys mostly sunny skies. Temperatures will follow a similar pattern, with highs in the upper 20’s north and low 40’s south. No precipitation is expected until our next storm moves in late tonight.
Today will feature some light precipitation as warm air tries to move back into the region after cooler air moved in last night. Without much moisture (or lift), this storm won’t be able to drop much in the way of precipitation, but most areas should get a few flakes or raindrops this afternoon. Otherwise, expect cloudy and quiet conditions across the region. High temps will range from 25 in the mountains to 40 along the MA border. Any snow accumulations will remain under an inch, with the best chance for a coating up in the mountains.
New England weather is often fickle and the conditions you experience often depend considerably on your location. Today, we’ll see that maxim put on steroids as a very sharp frontal boundary stalls out over the area.
Temperatures this morning highlight this contrast well. Most of NH is relatively warm this morning, ranging from around 40 in the north to just shy of 65 in the south. York County ME has joined in the warm air with temps around 60, but just north in Lewiston temps are barely above freezing. The cold air located over much of Maine will slowly try to work its way south today, but its ability to do so will be curtailed by the advance of the storm system responsible for this whole mess which is currently moving through upstate New York.
Thankfully, you have to travel a bit farther north before temps dip below freezing. The freezing line, as best I can tell from limited observations, is somewhere around Route 2, and it will likely remain there for the rest of the day. Just north of that line, freezing rain is falling this morning. Thankfully, it looks like the window of opportunity for ice accretion will end up being a bit narrower than we thought last night. That means that instead of around a half inch of ice accretion, most spots likely end up closer to 1/4 or 1/3 of an inch. While scattered outages are still possible, this small change in the forecast should alleviate the concern of power outages for most.
Precipitation will end from west to east after the passage of a cold front later this morning. In the south, breezy SW winds will shift towards the WNW while northern areas see light NE breezes flip around to the WNW and become a bit stronger. WNW flow will produce a bit of downslope-induced clearing along the coast, but otherwise expect overcast skies today.
Temperatures, especially in the south, will fluctuate several times today so instead of spending a long paragraph explaining exactly what temperatures will do in a given location, I’ll leave you with this animation showing the HRRR’s forecast for temperatures each hour today beginning at 6 AM and ending at 7 PM. I find the temperature gradient over York County this afternoon particularly interesting. Over just 10-20 miles, the temperature will range from almost 70 to around 40!
Today will feature extremely mild weather as a strong cold front approaches from the west. Expect high temps ranging from 40 in the insulated valleys up north to a little above 60 in SE NH. A few breaks of sunshine are possible especially east of the mountains, but overall expect mostly cloudy skies across the area today. With the exception of a few light rain/sleet showers this morning across the far north, dry weather is a pretty safe bet too. If you have any plans that take you outside (and not to the ski slopes), today’s an awesome day to get those done before cold air returns tomorrow.
As that cold air moves in tomorrow, many parts of the area especially away from the coast will experience freezing rain. While widespread power outages aren’t expected, I suspect a non-trivial number of folks will end up with the lights off for at least a few hours tomorrow night. Today is a great day to stock up on extra batteries/make sure your devices are charged/etc. in preparation for the ice. The best chance for outages will be found west of I-95 and north of 302. I’ll have a more detailed look at the ice either this evening or first thing tomorrow morning.
After our one-day run of seasonably cool temperatures yesterday, we’re headed back to mild weather today as southwesterly winds increase ahead of an approaching cold front. That front will spread clouds into the region from west to east this morning. A quick glance at satellite imagery reveals that most of the area is already beneath thick overcast as of 6:45 AM. The front will push some precipitation our way too, but everything moving in from the west will have a hard time making much headway today as a summer-like Bermuda High makes its presence known. With that in mind, the best chance for spotty light snow or mixed precip today will be found in the north and mountains. No accumulations of significance are expected.
High temps today will range from 30 in the northern mountains to the upper 40’s along the NH Seacoast.
Today will feature a brief shot of colder air behind the storm that narrowly missed to our east yesterday. The chilly airmass has been moving into the region on gusty NW flow overnight. Gusty NW winds will continue this morning before tapering off midday as high pressure begins to crest over the region. Skies this morning are mainly clear except for in the mountains where upsloping remains in progress. Mainly sunny conditions will continue through the mid afternoon hours before high clouds ahead of our next storm begin approaching from the west.
High temps today will be on the cooler side, but believe it or not that’s actually to be expected in January. We’ve just been so warm for so long that “normal” temps now feel cold. The mountains should top out around 15 this afternoon while the coastline gets up into the mid 20’s.