A Bit Cooler but Still Unsettled Today

Hello everyone!

Today will feature the passage of the cold front which brought showers and storms to parts of the area last night. Ahead of the front, expect continued warm and humid weather especially over eastern parts of the area. Onshore flow will continue to keep the midcoast on the cooler side at the cost of some occasionally-dense fog. Breaks of sun will try to emerge ahead of the front this morning, especially over southern NH and interior points northeast of Portland. Temps will climb into the mid to high 70s for most with a few low 80s right along the I-95 corridor.

The warm and humid airmass ahead of the cold front will support another round of showers and storms starting midday. The front is a little too early for major severe weather, but areas along/east of I-95 between Brunswick and Waterville might be able to squeeze out just enough energy for a loud boomah or two. For the rest of us, showers will be more of the rule starting midday and continuing into the afternoon. With the remnants of Tropical Storm Claudette passing by just to our southeast, there will be plenty of moisture to support locally heavy rain this afternoon.

By sunset, the front will be offshore and NW breezes will be pushing much cooler air into the region.

-Jack

showers and Storms May Pack a Punch Inland Today

Hello everyone!

Today will feature warmer and more humid weather as southwesterly breezes kick up and push tropical air into the region. That warm air will be ushered in by a warm front this morning which is bringing some showers to parts of the mountains and foothills as I write this around 9:30 EDT. Behind the front, skies clear out with mostly sunny weather expected for the midday hours. Clouds will then increase this afternoon as a cold front approaches from the west.

High temps this afternoon will range from around 70 along the Midcoast where cool onshore winds will provide relief from the heat to the low 90s in interior SW ME and southern NH. With dew points surging towards 70, this airmass will feel positively unpleasant. Thankfully it’s only here for a day.

Showers and thunderstorms will develop to our west this afternoon and move into NH around 6-7 PM. Western areas will be most at risk for severe weather with damaging winds, hail, lightning, heavy rain, and tornadoes all on the menu of possibilities from the CT Valley northeast into the Maine mountains. Storms will weaken considerably as they approach the coast around/after sunset.

As a programming note, being out in MT for the summer, the weekend schedule of camping and mountain climbing doesn’t overlap well with posting updates at a time they’d be useful on Saturdays/Sundays. My apologies for that this past weekend. In the future I’ll endeavor to include a weekend outlook with Friday’s update to address this.

-Jack

Clouds Increase Today ahead of Our Next Cold Front

Hello everyone!

Today will feature increasing clouds ahead of our next cold front which will be approaching from the west. Skies are clear across the region this morning but clouds are spreading across Quebec and New York as I write this around 9:15. I’d expect to start seeing clouds filtering in from the west in the early to mid afternoon across our area. This morning’s sunshine and light southerly flow ahead of the front will push temps into the low 80s for most of the area today with points along the coast north and east of Portland seeing cooler air move in off the ocean this afternoon.

As far as precip goes, we’ll be watching some thunderstorms currently over Michigan try to move our way this evening. They should lose enough energy to no longer pose a severe weather threat or even much of a threat of thunder, but some rain is possible especially over NH around and after sunset.

The cold front itself will cross the region with a round (or two) of showers and thunderstorms tomorrow, some of which may pack severe weather.

-Jack

Pretty Darn Nice Today

Hello everyone!

Today will feature widespread sunshine, dew points near 40, and high temps in the high 60s north to mid 70s in the foothills. In other words, 10/10 weather for this time of year. You may notice some NW breezes this morning but those should taper off this afternoon while winds switch around to the south/southeast along the coast. Get outside and enjoy it!

-Jack

Brighter and a Little Milder Today

Hello everyone!

Yesterday’s cold front is now offshore which means brighter skies and, for most, milder temperatures today. Yes the airmass moving into the region is cooler through most of the atmosphere, but the sunshine and northwesterly downsloping breezes will allow temps where we are at the surface to get warmer than they were on the “warm side” of the storm yesterday, except for the mountains.

That cool air aloft and warmer air near the ground means we’ll have to consider the introduction of some atmospheric instability this afternoon. Look for clouds to bubble up in the next couple hours especially up in the north where some clouds will grow tall enough to produce some brief showers. Where clouds and showers are most widespread north of route 2, high temps will be limited to the low 60s while the rest of the area enjoys temps in the low to mid 70s this afternoon.

-Jack

Cool and Unsettled Again Today

Hello everyone!

Today’s weather looks a lot like yesterday’s as low pressure slides up the Saint Lawrence Valley. A warm front extending southeast of that low will bisect the region today leaving much of coastal Maine, especially east of Portland, with cool onshore flow while warmer air is allowed into New Hampshire and the Maine mountains. That warm air along with some modestly increased humidity will support some showers and thunderstorms as a cold front approaches this afternoon. With modest instability (thunderstorm fuel), I’m not expecting anything special from these storms but a few folks will enjoy downpours and thunder this afternoon. The best shot at some storms will be up in the mountains and in the foothills.

Thick clouds especially in Maine will keep temps down today with highs ranging from the mid 60s along the Midcoast to the low 70s in the foothills. Some spots in central/southern NH will warm into the mid 70s.

-Jack

Cool and Unsettled Today

Hello everyone!

My apologies for the quasi-unintended Forecasterjack hiatus over the past few days, during which time I wandered the Great Plains in search of Bison and big thunderstorms before getting settled into my home for the summer in Montana. I figured cell coverage would be better than it was, and sometimes the timing didn’t quite work out for me to post at a moment that would’ve been useful. Anyways, I’m back now so let’s take a look at the forecast.

A weakening line of thunderstorms is entering the region from the west this morning and will make for a wet commute across most of NH. I don’t expect much of this to make it into Maine but a few showers are possible in western parts of the state midmorning.

More clouds and showers will move into the area from the southwest later in the morning after developing in an unstable airmass over NY. With so much cloud cover holding temps in the mid 60s over central NH and low 70s elsewhere, there won’t be much instability for storms to develop this afternoon as a cold front approaches. So while weakening storms moving in from NY might be able to produce a rumble or two of thunder, garden variety showers will be the rule of the day today.

-Jack

Thoroughly Unpleasant Weather Continues Today

Hello everyone!

Today will feature another day of thoroughly unpleasant weather as temps remain high and humidity only gets higher. Highs will once again range from the upper 80s in the far north and along the immediate shorelines to the low 90s inland and dew points will surge into the dreaded lower 70s. This means heat index values in the low to mid 90s across the area. If you have to be outside and not submerged in water today, be sure to drink lots of water and stick to the shade if possible.

This airmass will prove fertile for afternoon showers and thunderstorms, though the mechanism by which the atmosphere will initially be perturbed to set off storm development is a little unclear. One option is a cold front entering the region from the north around sunset, while another seems to be a subtle convergence boundary draped over southern NH. Thus the highest chances for thunderstorms this afternoon will be up in the mountains and down near the MA border, though I can’t rule out a brief shower anywhere. Storms today will mostly pose a heavy rain threat given the absurd amount of moisture we have around. Lightning and gusty winds are also possible.

-Jack

Heat Peaks Today

Hello everyone!

Today will feature the peak of our current heatwave as west-southwesterly winds continue to push hot air into the area under mostly sunny skies. Look for high temps ranging from around 90 near to coast to the mid or perhaps even upper 90s inland. With large-scale westerly breezes, the cooling effect of the ocean will be limited to the tips of the peninsulas and even there won’t be all that strong. Humidity will remain uncomfortably high though not extremely oppressive as the same atmospheric processes that allow for the extreme heat will also keep a lid on the humidity. Without any disturbances in sight, I don’t expect any shower or thunderstorm activity this afternoon despite the hot and humid airmass.

Tomorrow will still be hot but clouds will increase ahead of an approaching cold front and thus we won’t be able to push quite as far into the 90s. Real liberation from the heat appears to be in store later in the week.

-Jack

Hot and Humid Today

Hello everyone!

Today will feature hot temperatures and modestly high humidity as we have the misfortune of sourcing our airmass from the Gulf of Mexico. Temps will rise into the mid to high 80s in the north and along the coast east of I-95/I-295 while the interior makes a solid run into the low 90s. Large-scale southwesterly breezes will hamper the ability of the sea breeze to make meaningful progress cooling down anyone not on the Midcoast peninsulas.

Skies will start out mostly sunny this morning before another advancing warm front helps kick up some cumulus during the midday hours. A few of these cumulus clouds will grow tall enough to produce showers and maybe even a thunderstorm or two starting around 12-2 PM. The best odds of a shower or two seem to be in the mountains over towards the coast near Brunswick. Clouds and any showers will fade as the sun slips towards the horizon this evening.

-Jack