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Jan 20/21 Snow Threat


snowNH

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thanks for thislooks like western Ct and then Se mass could have *potential* areas of 5-8 and like 6-9 respectfully. does the qpf taper slightly from w ct into RI before picking up again over cape.

do you have a qpf total for like PVD/ and or KTAN on today's euro phil

I hope so euro had exactly .5 at BDR other models agree, with decent ratios hopefully a nice snowfall, but we are the forgotten corner when it comes to discussion.

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You're calling for a 1-2 inch forecast to "bust badly." Into what, the relatively adjacent 2-4 inch zone?

Aside from the NAM, most models have trouble working .2" plus of QPF north of the MA/NH border... even with 18:1 ratios that's 3.6" tops, and that's if they get all the QPF forecast and the ratios are that generous for the duration.

If an area gets 1.6" more than the max of what's been forecast, with snow, I don't know that I'd consider it much of a bust unless the forecast was for no snow at all.

I think his 4-6 band is way too narrow...shows little knowledge of our climo. And yes...3-6 is dramatically different vs 2-4. Maybe I'm in the minority but I think if you go 2-4 and someone gets 5.5 it's a much bigger bust than going 3-6 and someone getting 2.4. Also, looking at it closely, Kevin will do better than 2-4....or we'll all pay...lol.

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yeah i got a kick out of that. it bumped a bit down here but otherwise the numbers are almost exact.

it's 18z temp at BOS is 22F...19F at ORH (down to 11F there by 00z LOL)

I think the one trend I did notice, that Scott brought up..was a bump up down your way. It looks like enough moisture is brought him to really help wring out the moisture there. The flow is progressive to the north, so when you look at the 850mb fields, there is good srly flow, and then all of the sudden it becomes more wrly over CNE. So frontogenesis should be good..especially down your way, but it makes me think there could be maybe another fronto band around here or to the north. In fact, on the SPC site, it has some decent frontogenesis and MPV or EPV..same thing for all intents and purposes. Those are a great product BTW..SPC SREFs.

I also like the lingering cold and CAA at 950 with ne winds. Also might be a mini coastal front near the coastline so perhaps some lighter snows from time to time across se ma. I can see that happening.

The only thing that I don't like, is a possible cutoff from say the 5-6" amounts to more 2-3" stuff. That might be nearby this area. The widespread 2-3..maybe 4" stuff will be just that...cover a wide area, but the meat of the good lift may just tickle this area.

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I think the one trend I did notice, that Scott brought up..was a bump up down your way. It looks like enough moisture is brought him to really help wring out the moisture there. The flow is progressive to the north, so when you look at the 850mb fields, there is good srly flow, and then all of the sudden it becomes more wrly over CNE. So frontogenesis should be good..especially down your way, but it makes me think there could be maybe another fronto band around here or to the north. In fact, on the SPC site, it has some decent frontogenesis and MPV or EPV..same thing for all intents and purposes. Those are a great product BTW..SPC SREFs.

I also like the lingering cold and CAA at 950 with ne winds. Also might be a mini coastal front near the coastline so perhaps some lighter snows from time to time across se ma. I can see that happening.

The only thing that I don't like, is a possible cutoff from say the 5-6" amounts to more 2-3" stuff. That might be nearby this area. The widespread 2-3..maybe 4" stuff will be just that...cover a wide area, but the meat of the good lift may just tickle this area.

Somehow a band of higher totals is going to verify NW of us as it always does in these setups imo. We may be in a screwzone while a band sets up to our NW and if there is a north trend, maybe a sleet line somewhere in SE Mass.

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Somehow a band of higher totals is going to verify NW of us as it always does in these setups imo. We may be in a screwzone while a band sets up to our NW and if there is a north trend, maybe a sleet line somewhere in SE Mass.

The forcing is so weak though, that this band is not certain, it may be relatively weak. What I could see is a mini Essex county min like some guidance has, but who knows.

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I think the one trend I did notice, that Scott brought up..was a bump up down your way. It looks like enough moisture is brought him to really help wring out the moisture there. The flow is progressive to the north, so when you look at the 850mb fields, there is good srly flow, and then all of the sudden it becomes more wrly over CNE. So frontogenesis should be good..especially down your way, but it makes me think there could be maybe another fronto band around here or to the north. In fact, on the SPC site, it has some decent frontogenesis and MPV or EPV..same thing for all intents and purposes. Those are a great product BTW..SPC SREFs.

I also like the lingering cold and CAA at 950 with ne winds. Also might be a mini coastal front near the coastline so perhaps some lighter snows from time to time across se ma. I can see that happening.

The only thing that I don't like, is a possible cutoff from say the 5-6" amounts to more 2-3" stuff. That might be nearby this area. The widespread 2-3..maybe 4" stuff will be just that...cover a wide area, but the meat of the good lift may just tickle this area.

18z NAM seems to be onto this idea too of a good max over SE areas. If we can stay cold enough this could push double digits around here somewhere.

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I think his 4-6 band is way too narrow...shows little knowledge of our climo. And yes...3-6 is dramatically different vs 2-4. Maybe I'm in the minority but I think if you go 2-4 and someone gets 5.5 it's a much bigger bust than going 3-6 and someone getting 2.4. Also, looking at it closely, Kevin will do better than 2-4....or we'll all pay...lol.

Haven't we already paid by putting up with him so far this winter? Or, you know, in general?

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I think his 4-6 band is way too narrow...shows little knowledge of our climo. And yes...3-6 is dramatically different vs 2-4. Maybe I'm in the minority but I think if you go 2-4 and someone gets 5.5 it's a much bigger bust than going 3-6 and someone getting 2.4. Also, looking at it closely, Kevin will do better than 2-4....or we'll all pay...lol.

Of course cause that's 1.5" above the range. 1.5" below the range would be like getting 0.5" out of a 2-4" forecast. That's a bust.

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I think the one trend I did notice, that Scott brought up..was a bump up down your way. It looks like enough moisture is brought him to really help wring out the moisture there. The flow is progressive to the north, so when you look at the 850mb fields, there is good srly flow, and then all of the sudden it becomes more wrly over CNE. So frontogenesis should be good..especially down your way, but it makes me think there could be maybe another fronto band around here or to the north. In fact, on the SPC site, it has some decent frontogenesis and MPV or EPV..same thing for all intents and purposes. Those are a great product BTW..SPC SREFs.

I also like the lingering cold and CAA at 950 with ne winds. Also might be a mini coastal front near the coastline so perhaps some lighter snows from time to time across se ma. I can see that happening.

The only thing that I don't like, is a possible cutoff from say the 5-6" amounts to more 2-3" stuff. That might be nearby this area. The widespread 2-3..maybe 4" stuff will be just that...cover a wide area, but the meat of the good lift may just tickle this area.

NCEP actually has a similar site...it's hard to find but i have it bookmarked...i'll find it and send it to you.

it does seem like stuff starts to come together nicely after 17 or 18z through 21z +/-. you can see the 850 frontogenesis start to go to town over E MA at that point. so could be several hours of intensifying precip.

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The forcing is so weak though, that this band is not certain, it may be relatively weak. What I could see is a mini Essex county min like some guidance has, but who knows.

Yeah I could see maybe some dry air nosing down from maine lowering totals there. But I wouldn't be surprised if this thing bumps north tonight at 00z with some sleet taint up to KTAN as the final solution.

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