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Jan 20/21 Snow Threat


snowNH

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The thermal gradient is pretty good actually. You can see that on 850 progs. The problem

Is that the flow just to the north is out of the west and the lift is centered more

Towards the surface low. Basically no closed lows means lift may be centers closer to surface low. Things sort of losing crappier in the last 10 hrs after 12z. The gradient is there but the advection processes blow. Definitely not as good as 12z when I threw those numbers out but we'll see. That was a problem brought up in the afternoon. It may not get going until it exists stage right.

There's a great antecedent thermal gradient, but it has trouble getting compressed like we often see in SWFEs. It shows how the forcing is kind of weak.

At any rate the newer RUC is more optimistic, we'll have to see.

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LOL...epic fail. I was optimistic when I got home from work and saw BOX had me for 3-6"...and a WWA. Then I saw the nam and gfs...wow. SREFS don't look horrible. If I was on an 11pm broadcast right now I would def. downplay this though. Maybe 2-3" for me near the pike?

So 3-6 to 2-3 is an epic fail, hmm our priorities have changed :weenie:

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There's a great antecedent thermal gradient, but it has trouble getting compressed like we often see in SWFEs. It shows how the forcing is kind of weak.

At any rate the newer RUC is more optimistic,

we'll have to see.

Yeah that's what I mean. We lose some of the processes for good isentropic lift well north of the low, if guidance is right. Lift should be good across se mass. But We'll just have to see....sometimes or can improve last minute.

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Just a quick question and point about using the Mass Pike as such a common marker or cut off for snow/rain/heavy snow. Why do we use a road that has a pretty significant bend in it. I mean when we say "north of the pike" do mean north of the pike near boston which is in the middle of the state latitudinally, or are we referring to out near springfield which is almost on the connecticut border. Tough marker to use. So a place like dedham is south of the pike, but springfield is north of the pike. Just wondering what part of the pike people are referring to.

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UK or RGEM?

RGEM didn't look bad..similar to 18z.

PA couple of issues:

Cold and dry tonight. My tendinitis suggests this event is fair at best. It hurt much more the the other night.

So all those in consideration, I am calling for 2-5 imby. Downgrade from 3-6. Would love to bust.

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Yeah it really bends northwest in the Berkshires and into the connector to the NY Thruway in ENY, but I don't think most people on this forum are thinking in terms of that far west.

Just a quick question and point about using the Mass Pike as such a common marker or cut off for snow/rain/heavy snow. Why do we use a road that has a pretty significant bend in it. I mean when we say "north of the pike" do mean north of the pike near boston which is in the middle of the state latitudinally, or are we referring to out near springfield which is almost on the connecticut border. Tough marker to use. So a place like dedham is south of the pike, but springfield is north of the pike. Just wondering what part of the pike people are referring to.

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Wait, are you saying that it's doing more than you thought right now? I'm confused

No I'm saying that the qpf didn't argue for lots of moderate snow quite yet. The shield was going to take a hit as the flow started moving more to the ene after diving more ese. On phone so I'm limited to what I can see but I saw models more lackluster than I would like. Like will and I mentioned if the dynamics suck and the storm is weaker or further south, that will affect the nrn shield of the snow. You can only have a good deformation band if the dynamics allow it.

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