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.

Overcast With Coastal Showers Possible Today

Hello everyone!

In another glorious sign of our forthcoming shift towards autumn, today’s weather will be brought to you by a non-tropical storm developing offshore. This storm, currently located near the Outer Banks of NC, will move towards Cape Cod during the day today. The system has already pushed thick clouds overhead, especially outside the mountains. This will generally remain the rule for the rest of today with only a few brief breaks of sun possible in the far north. Shower activity will be focused to our southeast for most of today, so the coast stands the best shot at some raindrops especially after sunset. A few isolated showers can’t be ruled out in the mountains either especially north of Farmington.

Cloud cover and southeasterly breezes will hold temps in the mid to upper 70s for most with a few low 80s possible northeast of Augusta.

-Jack

Cloudy but Dry Today

Hello everyone!

Today will feature mostly cloudy skies but mostly dry weather as a storm develops just a little too far offshore to bring precipitation to our area. As with any storm taking a track like this, clouds will be thickest along the coast with breaks of sun expected up in the mountains and in western NH especially this afternoon. High temps will stay a bit on the cooler side thank to the clouds, ranging from the low 70s along the immediate coast to the upper 70s in southern NH.

-Jack

Isolated Showers Possible this Afternoon

Hello everyone!

Low pressure moving to our north will keep today from being perfectly clear, though most of the day will be nice for most of the area. A mix of sun and clouds this morning with scattered showers northeast of Augusta will give way to some more clouds this afternoon as instability develops under an upper-level low. Near the coast, some of these clouds will grow tall enough for rain and isolated thunder during the afternoon. The clouds and cooler air aloft will hold temps to the mid 70s north and upper 70s south.

-Jack

Showers and Thunderstorms Return This Afternoon

Hello everyone!

Today will feature the return of showers and thunderstorms as an area of low pressure moves in from the west. Any sunshine this morning will be short-lived along the coast with overcast settling in for the afternoon. Southerly winds will pick up this afternoon and push moisture-laden air into the area, leading to some patchy fog along the Midcoast and an increase in humidity everywhere. The first showers should arrive in western NH between 3 and 5 PM before spreading east into Maine. Rain will fall heavily at times through the night before tapering off closer to tomorrow morning. Most of the area can expect around 0.5-1.5″ of rain with a few towns that end up under some heavy thunderstorms exceeding that and a few towns drawing the short straw between cells with less.

This system happens to be what I call the “summer backbreaker” as it will signal the end of deep/mid summer and the beginning of our slide into late summer/early fall. There will still be warm/hot days heading into August, as well as humidity unfortunately, but this is our first real cool airmass arriving on NW flow rather than E/NE flow so it signals a shift in the state of the atmosphere worth noting. If you couldn’t tell by now, this is one of my favorite days each year. Enjoy it!

-Jack

Pretty Nice Weather Today

Hello everyone!

Today will feature pretty nice weather across the area as high pressure builds overhead. Look for mostly sunny skies this morning with just a dash of cloud cover moving in this evening. There will be just enough humidity over far southern areas to support some pop-up clouds earlier in the afternoon, a couple of which just might grow tall enough to produce some brief and isolated showers. Overall though, today looks pretty dry. The northerly/northwesterly breezes will push air into the region from Quebec (not on fire) instead of NW Ontario (very much on fire) so smoke won’t be nearly as much of a concern today as it was over the past couple days. Enjoy that beautiful clean air!

-Jack

Cold Front Brings Unsettled Weather and Some Respite From the Smoke Today

Hello everyone!

Today’s primary weather feature of interest will be a cold front moving through the area this afternoon. Ahead of the front, winds will be very light and out of the WNW. This means that humidity leftover from yesterday will linger especially near the coast. Warm temps will also linger, especially in the south where sunshine will be most widespread in the early part of the day. Look for highs here to top out in the low to mid 80s while the mountains remain confined to the mid 70s under thicker cloud cover and occasional showers.

Another concern today will be continued poor air quality from wildfire smoke. Rather astonishingly, New England retains the “worst air quality in the country” award this morning if you discount a handful of stations directly in the path of the largest fire over in California. Air quality is slowly improving as the sun comes up and disperses the smoke through a deeper layer of the atmosphere, but folks sensitive to the smoke (you know who you are by now) should take it easy outside especially for the next few hours. The cleanest air today will be found behind the front in the north.

A wave passing along the front will bring a round of strong thunderstorms to southern New England this evening. We’ll be on the northern edge of this wave so any thunder should be confined to southern NH and any severe weather to the south of the MA border. That said, rain may fall heavily at times starting late afternoon in NH and early evening over in ME. This system will be moving pretty quickly so flooding concerns aren’t too high, but the usual suspects could see some wet basements and slow drainage.

-Jack

Showers and Storms Possible Again Today

Hello everyone!

Today will feature another round of showers and thunderstorms for a lucky few as another cold front approaches from the west. Southwesterly breezes ahead of this front will push warmer and more humid air into the region with highs rising into the upper 70s up north and mid 80s in the south away from the coast. Temps at the coast will be held down by onshore breezes and a bit of fog/stratus especially this morning.

Everyone will see another batch of wildfire smoke move through midday through the afternoon. This smoke will be present in high concentrations near the ground so hazy conditions and air quality degradations are in order unfortunately. As of this morning, air quality stations in VT and upstate NY are reporting air quality that is “unhealthy for sensitive groups” while Cornwall Ontario has air quality bad enough to be unhealthy for everyone. As this smoke moves in from the northwest over the next few hours, take it easy if you have to be outside.

Showers and storms will pop up intermittently this afternoon with the highest odds of rain to be found over northern and northeastern parts of the area. Storms that form north of Portland/Fryeburg could produce some small hail and gusty winds in addition to heavy rain and lightning.

-Jack

Weekend Outlook

Hello everyone!

I’m headed back offline this weekend so this post will contain forecast information to get you through until I’m back on Monday morning.

Tomorrow looks to be the nicer day of the weekend with sunny skies in the morning giving way to a few clouds in the afternoon. High pressure will be passing right overhead so clouds will be of the afternoon pop-up variety and are unlikely to drop more than a brief shower over the mountains and southern foothills. High temps will range through the mid/upper 70s for most with a sea breeze holding temps down along the coast.

Unsettled weather will return (again) on Sunday as low pressure moves up the Saint Lawrence Valley. Expect showers to be ongoing across most of the area as the sun comes up with the steadiest rain found up in the mountains closer to the storm. Warmer air will try to move in behind these showers midday, with some breaks of sun possible in southern and western NH. Just how much sun we get will determine how strong a round of afternoon showers and storms can get as that low drags a cold front through. Right now, the best shot at some afternoon sunshine and evening thunderstorms looks to be southwestern NH but if you see some sunshine in the ME foothills, keep the possibility of some rumbles in the back of your mind.

Thick cloud cover and onshore southeasterly breezes will hold temps in the mid 60s along the Midcoast with upper 60s to around 70 more common in the foothills and points west of Portland. Some spots in SW NH may run into the mid 70s if the sun can come out, but that’s not a guarantee.

Showers and storms will fade around sunset before quieter weather returns to start the week.

I’ll be back again on Monday.

-Jack

Another Round of Afternoon Showers and Storms Today

Hello everyone!

Today will feature another round of afternoon showers and thunderstorms as pockets of cooler air aloft continue to provide instability across the area. Skies will start off mostly sunny this morning before becoming mostly cloudy this afternoon as instability is generated by the contrast between warming air near the ground and cooling air aloft. Any one of these afternoon clouds will be capable of dropping some rain and gusty winds given the setup. The best chance for a severe storm (producing winds strong enough to maybe cause a power outage or two) will be in southern NH and far SW ME where more instability will be present. These storms shouldn’t last too long so if one drifts by your area, just duck inside for a few minutes to let it pass. Shower activity will fade around and after sunset as we lose daytime heating.

High temps will remain seasonably cool, ranging from the upper 60s up north to the upper 70s in southern NH.

-Jack

Cool and Somewhat Unsettled Today

Hello everyone!

Our general trend of cooler and more unsettled weather will continue today as an upper-level disturbance slides through the area. A cold front has moved offshore and taken with it most of the tropical air, so storms today won’t have nearly as much fuel as they did a couple days ago. That said, scattered showers are possible in the foothills and mountains especially this afternoon. Otherwise, skies will feature a mix of sun and clouds with high temps in the low to mid 70s.

-Jack