All Activity

I feel like the AIs are hitting some theoretical ceiling if the surface was bare and dry. That would make sense given the sun angle equivalent in fall for Oct 5-10 where records are in the mid/upper 80s in the warm spots. But I think it’s safe to toss those readings. Slash 10°F off of those and you start getting closer to the op runs and highs from that 2/21/2018 record heat day.

Solid melt day today for many , highs 48-52 dews 35-40 bright March sun, can hear the gutters already pouring water at 10am

Well, PS: I'm jelly over her band

On the pack? Yeah no

Euro MJO goes into 8 and loops

I was thinking the same yesterday, but the east winds might put the kabosh on that threat to at least some extent.

Bonanza already beginning.

Heh... I haven't railed on about BDs since 2010. I know that. I was late getting my Met head wrapped around the total mechanics of what BD synopsis is/why ... but once that light turned on - Understanding goes a long way to ameliorating once vexations. Those are 25 dollar words to say that if you get why, it's not as frustrating nor annoying. LOL BDs are a decoupling of the synoptics in the vertical. Basically, around 250 mb above the surface ( expressing altitude in pressure) ...so ~4,000 feet(1300 m) give or take, the bulk troposphere no longer cares what's happening below that level. Down here in the basement, the air is moving NE --> SW, and above that level the pattern may only look vaguely like that could even be taking place below. These become disparate circulation modes. This is caused to happen because of topographic layout over the eastern continent. Everywhere E of the eastern cordillera, particularly E of the Berks to White Mountain axis... there is a drop off in elevation down to sea level. Given the normal trajectory of the westerlies ( flowing WSW or W or NW over those elevations, causes a "curl" vector which points back SW underneath as the elevation descends. That vector is overcome much of the time... such that we dont' have a BD flow always. But, at other times, such as when there is +PP ( pressure pattern) over Maine/GOM/Maritime, that imbalance will take advantage of the vector immediately. Rollin' on back SW the air comes, because air always moves from +PP to -PP. That action of doing so, is the uncoupled state. There are reasons by the +PPs set up. They range from S/Ws moving SE out of Quebec toward the lower Maritime, where backside NVA/downward motion piles the air. There's a cold front up there that passes by and piles air precariously close to the vector ... so that can get the air rolling. The other way is just aggregate cold Labradorian current modulated air density, which is intrinsically +PP in a narrow lowest level. If that sniffs the vector, it'll start rolling back SW. Kind of a fuzzy different between that kind and seabreezing. In March through early June really ... both these kinds of BD means are aplenty. So anyway ... in understanding all this, heh. It's built in.

40s dews will do some damage. Especially with sun. I will say that mesos were hitting that foggy/cloudy spot in the CRV in MA/CT for days indicated by a cool spot in the afternoon on the 2m temp progs. I was curious to see what that was going to look like if it was real….well voila.

Snow at Logan, rain for Jerry?

21-22”

Cold

It’s 32 there on hrrr.

About 4” here. Pretty morning with a deep winter vibe. Looking forward to feeling 50+ today for the high! Yesterday before the snow started and then first thing this morning.

Loses its punch as it goes SW. just sort of borderline there.

Will be 28-30 here. H cubed is frigid

Yep- I see nothing boring about the upcoming pattern with a classic battleground developing between the extremes and an active storm track. Looks like a lot of potential for powerhouse spring systems in mid March

24-25" average. Little bit more in the shaded areas, little bit less in full sun. I think my biggest event this year was like 6-7" inches. It's pretty dense, just little events stacking on top of each other.

Idk I think this trends a bit colder.. lots of snow otg.. and a fresh cold drain from the NE.

I agree, but we ended up with 2 inches before the changeover in Westfield yesterday. Maybe I didn't pay attention, but i don't recall models showing that either

Fog gone some melting but with ice cover and only a few hours of AF dews won't be a melting Bonanza

Snowed 9 PM thru about 2:30 AM, nice fluffy 2.8" on 0.23" LE, 22" at the stake. Forecast had been 1-3. Bright sun already has cleaned most of the trees.

Hey, hey, hey now! I finished with the exact same numbers of you. Who woulda thunk?

3k NAM near BOS. Mini snow bomb? Lol

Then there is this