All posts by Jack Sillin

I’m a third-year atmospheric science student at Cornell University who has been blogging about the weather since 2011. While I’m not officially a meteorologist, I have accumulated a bit of experience forecasting both local weather (in western Maine and New Hampshire) as well as national/international weather during my time writing for weather.us and weathermodels.com. I also have experience programming in Python, teaching concepts in weather forecasting, and communicating forecast information to general audiences.

Milder and Quiet Today

Hello everyone!

Today will feature milder temps and quiet weather as northwest winds begin to back around to the southwest. Low clouds are fairly widespread this morning despite some downsloping. As the morning goes on and winds start shifting, look for low clouds to thin out a bit while some mid/high clouds start moving in. The net result will be a mix of sun and clouds with the beginning and end of the day more likely to be overcast and breaks of sun more likely during the midday hours. High temps will rise quite a bit from yesterday, ranging from the low 30s up north, where low clouds may hang tougher, to near 50 along the NH/MA border.

-Jack

Cool and Breezy Today

Hello everyone!

Today will feature cool temps and breezy NW winds in the wake of yesterday’s storm. That means we’ll once again be running the upslope/downslope playbook with clouds up in the mountains and sunshine closer to the coast. Temps will of course act accordingly with highs in the low 10s up north and high 20s in the south. NW winds will be gusty especially during the morning with some spots making a run at 40mph. Winds will slacken and back towards the southwest this evening with some more widespread cloud cover arriving in advance of a weak system approaching from the west.

-Jack

Rain Changes to Snow Today

Hello everyone!

A strong cold front will cross the region today as low pressure develops along its axis. That means rain this morning will change to snow as the day goes on and colder air moves in. As per usual, the cold air will arrive on scene first in the mountains, where snow is already falling, and will take the longest to reach the coast. Snow should make it into the foothills mid/late morning and all the way to the coast by early/mid afternoon. That said, northwest winds bringing in the cold air will also be downsloping off the mountains which will limit the amount of precipitation available for snow once the cold air is in place. As a result, this will be a pretty minor system outside the foothills and mountains. The coastal plain can expect a general 1-3″ with some 4″ potential farther north and west.

Up in the mountains, heavier snow bands and colder temperatures will support more substantial accumulation. 8-12″ seems like a good bet for most of the mountains, especially outside the valleys. 4-8″ is probably a good rule of thumb for the foothills. Either way, it’ll be messy out there today. Temps will start near freezing in the north and in the mid 40s south before falling rapidly into the 10s and 20s later this afternoon.

-Jack

Milder and Quiet Today

Hello everyone!

Today will feature milder temps and quieter weather as we don’t really have any weather features in the immediate vicinity. Look for high temps to top out in the mid 30s up north and upper 50s in the south under partly to mostly cloudy skies. You’ll notice some westerly breezes this morning, especially up north, but these will slacken and turn southwesterly later in the day.

-Jack

A Bit of Light Snow Today

Hello everyone!

Some light snow is in the forecast today as a weak storm approaches from the southwest. Clouds from this system are already here this morning and overcast will stick around through the rest of the day. Snow will arrive in southern NH around noon before spreading north into the Whites and southern Maine during the early/mid afternoon.

Before precip arrives, southerly winds will push high temps into the mid/upper 30s for most of the region. Evaporational cooling should be enough to get snowflakes to the ground (except perhaps right at the coast) but with marginal temps, generally unimpressive dynamics to generate heavy banding, and the strong March sun, I don’t expect much if any accumulation on roads especially those that get treated this morning.

After sunset, temps will cool back towards freezing and accumulation will be able to proceed a bit more efficiently. That said, the storm will be weakening as it pulls offshore so we will have wasted our best dynamics at the time of day least conducive to accumulation.

With all that in mind, this will be a low-impact storm system. Snowfall totals will range from 2-4″ in the hills of SW NH to around an inch in York County away from the shoreline to less than that farther north. Parts of the northern mountains may struggle to see more than a few brief flurries.

-Jack

Cooler and Breezy Today

Hello everyone!

Cold air is moving into the region today on a brisk NW breeze. As a result, we’ll be dusting off the usual upslope/downslope playbook with clouds and chilly temps (low/mid 20s) up in the mountains and sunny skies/milder temps (mid 30s) along the coast. Some flurries are expected in the mountains, especially this morning, but overall today will remain dry.

-Jack

Rain Moves In Today

Hello everyone!

Our next storm system will move in today right on the heels of the one that produced yesterday’s extreme warmth. Any sunny breaks this morning will be short-lived as clouds pour into the area from the west. Rain will begin late morning in western NH before advancing into Maine during the early afternoon. This will be a mostly/entirely rain event outside the mountains where some wet snow is expected especially at higher elevations. Rain will fall steadily and heavily at times through the evening before coming to an end overnight. High temps will remain above normal, ranging from the mid 30s in the mountains and usual chilly foothill enclaves to the low/mid 50s in southern NH and adjacent parts of far SW ME.

-Jack

Very Mild But Unsettled Today

Hello everyone!

It will be feeling a lot like spring out there today as a warm front claws its way through the region and at least a few of us make a run into the 60s. The front will approach this morning with thick clouds and a round of precipitation that will fall mostly as rain except for some pockets of freezing rain in the foothills. Rain will move in around 9-10 AM and will depart between noon and 2 PM.

Behind the rain, southwest winds and emerging sunshine will push temps to levels we haven’t seen since Halloween. Points south of Brunswick/Fryeburg/Plymouth NH should be able to get safely into the 60s with parts of the CT Valley possibly making a run at 70. As always, the warm air will struggle as it tries to push farther into the foothills and mountains. This is nearly the perfect setup for overachieving temperatures, with clearing skies and a southwest wind, but leftover snowcover and topography will probably conspire to limit high temps to the mid 40s for most of the foothills and mountains. The Midcoast will actually see temps limited by an onshore component to the flow. Highs there will top out in the mid 50s.

This evening, the cold front approaches with a line of showers and thunderstorms that will develop this afternoon over Quebec and New York. As these storms move into the cooler air over our area around sunset, they will be weakening but some rain is likely around 6-8 PM especially up in the mountains. I can’t even rule out a rumble or two of thunder. Look to the northwest around sunset for the season’s first glimpse of towering cumulus!

-Jack

Clouds Increase, Temps Rise Today

Hello everyone!

Sunny skies this morning will slowly give way to more cloudiness this afternoon as our next storm system begins to approach from the west. With high pressure shifting offshore and winds starting to flip around to the southwest, temps will be on the rise as well. Highs will range from the upper 20s up north to the mid 40s in southern NH.

-Jack

Cool and Quiet Today

Hello everyone!

Today will feature cool temps and quiet weather as low pressure settles into Atlantic Canada. Winds will continue to blow from the west which means some upslope cloudiness in the mountains while the rest of the area should remain partly to mostly sunny. Temps will be seasonably cool, ranging from the upper 10s in the north to around freezing in SE NH.

-Jack