The Show Called Spring Is Over

Posted by Chris Lambert

We reached the mid 50s this afternoon, although with such a strong wind, it definitely didn't feel quite as warm.  That southwest wind is now a northwest wind and that closes the Spring show we've had for the weekend.  Colder air pours into southern New England tonight, and by tomorrow morning, temps are back into the teens and lower 20s.

The cold weather sets the stage for snow.  An upper-level low drifts in from the west Monday afternoon providing enough instability to bring in some flurries and light snow by day's end. 

Things get interesting overnight... to say the least.   The upper-level energy captures moisture from an ocean storm far out, draws some of that moisture in, and with instability in the atmosphere set-up across New England thanks to cold air rushing in aloft, snow becomes steady predawn Tuesday, through Tuesday mornings commute.   In this type of situation (Norlun Trough or inverted trough.. technical name) snow amounts from town to town can vary quite a bit.  I'm thinking 1-3" west of I-93 and west of Rt. 24. 3-5" are likely closer to the coast, in part from a coastal front that sets up early in the morning to aid in istability and moisture.  Within that 3-5" there is a possibility of localized bands setting up (tends to be north of the Norlun trough axis), where a few towns could well exceed the 5". The best chance for that is Cape Ann to the Seacoast of NH and coastal southern Maine, as well as the Cape.   To pinpoint the towns in line for that now is a tough promise since we need to know exactly where that trough sets up.  The snow will be light and fluffy, and temps fall into the teens Tuesday afternoon.

Tuesday night-Thursday look cold, in fact, mornings start near 0 Wednesday and Thursday, and highs Wednesday hit 15 if you're lucky.  Then more snow Friday!  Welcome back winter, right?

Come On Ride The Train

Posted by Pete Bouchard

Heavy rain is on the move! All afternoon long it was stalled over Western Massachusetts and Connecticut. Heavy pulses of rain traveled over the same towns and cities - a process meteorologists call "training" - resulting in flash flooding in some counties to our west.

Unsettling

Posted by Jeremy Reiner

Another day where we have cool, ocean air battling warmer land air leading to a clash of air. That means clouds, drizzle, fog, humidity (frizzy hair) for much of the day. It's not a washout though. The highest chance of rain is this morning--until 9:30am and then later this afternoon (after 3pm). In between, you will see a lot of clouds but also some sunshine at times. Even limited sun will be able to shove temps well into the 70s. This warm & humid air is what will lead to another round of showers & t-storms later today. Some of the storms will be intense. Like the past two days the strongest storms will be in western New England. Only isolated showers/ thunderstorms are expected along the coastline later today. Sox game will have the risk of some showers but they should be able to play that game. Welcome back Tito!

Saved by The Sea Breeze

Posted by Pete Bouchard

Although my forecast was busted today, there was one good thing that came out of it.

Stability.

That gray overcast that hung over the eastern half of the Commonwealth provided a stablizing influence to our atmosphere. The cool air blowing in from the ocean kept the temperatures in the upper 50s and low 60s all the way back to Metrowest. While that makes for lousy short-and-t-shirt weather, it is poison to thunderstorms.

Wild & Wacky

Posted by Jeremy Reiner

Wild temperatures yesterday---from the 80s down into the low 60s in just an hour AND some heavy duty thunderstorms. The reason was a cool front that dropped in from Maine. That front is in western New England this morning and it's a chameleon as it will become a warm front and try to warm things back up during the day.