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Jan 20/21 Snow Threat


snowNH

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In my experience you get carried away if you assume fluff factor on top of the NAM qpf output. The best way to handle the NAM is just assume 10-1 snow ratios.... Then if the qpf goes down by like 30% in the last couple runs you don't get dissappointed.

So if the NAM says .5" now ...assume 5 inches of snow. Then if tomorrow night's NAM cuts you to .35, but you actually get 15-1 ratios...well you still got your 5 inches.

Between 30-40% of getting 0.25" or greater in 6 hrs.

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In my experience you get carried away if you assume fluff factor on top of the NAM qpf output. The best way to handle the NAM is just assume 10-1 snow ratios.... Then if the qpf goes down by like 30% in the last couple runs you don't get dissappointed.

So if the NAM says .5" now ...assume 5 inches of snow. Then if tomorrow night's NAM cuts you to .35, but you actually get 15-1 ratios...well you still got your 5 inches.

LOL, why did you quote me on this?

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I'm not surprised it's trending north now. The surprise to me was that the much vaunted Euro also got cold feet and went south the last two runs. I expect it will bump back north at 0Z.

You're forgetting one of the commandments...

Thou shalt not get thy hopes up over the 18z NAM

Trend thus far this season is to trend north and screw our area...it only stands to reason that when we get breathing room, the trend will reverse and still screw our area.

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yeah looks like it goes right over it. would likely mix and/or flip out here for a time midday...but better precip for a good chunk of SNE.

It was weak on the lift and precip, even for looking a little better. Probably would be better if we had strong lift. GFS soundings were pretty cold until the very end it seemed, for HYA.

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Yeah ....tonight + Saturday just might get me to 30 inches..... I only had 8 inches in the late October stuff.

Liking the trend on the 18Z data. Looks like the Saturday event should get my seasonal total past the 50" mark. I stand at 46.5" now, 26.8" from October. Hard to believe given how little they've had out toward ALB.

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It was weak on the lift and precip, even for looking a little better. Probably would be better if we had strong lift. GFS soundings were pretty cold until the very end it seemed, for HYA.

one thing that continues to be present is a very large mid-level RH field...so should be an expansive area of snow...not one of those sharp cut-offs

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Liking the trend on the 18Z data. Looks like the Saturday event should get my seasonal total past the 50" mark. I stand at 46.5" now, 26.8" from October. Hard to believe given how little they've had out toward ALB.

That's pretty crazy... we are at the same snowfall on the season so you'll probably pass our snowfall down here in the town of Stowe with these next events. But we got absolutely shut out in October. Your area over towards Pete (the Berkshires in general) may have the most snowfall out of New England this winter, aside from 1,500ft+ along the northern Green Mountain spine.

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I'm liking the looks of this. I'll be "watching" it from the pool.

MAZ002-200900-

WESTERN FRANKLIN MA-

INCLUDING THE CITIES OF...ASHFIELD...CHARLEMONT...COLRAIN...

SHELBURNE

416 PM EST THU JAN 19 2012

.TONIGHT...SNOW. TOTAL SNOW ACCUMULATION OF 1 TO 3 INCHES. NOT AS

COOL. NEAR STEADY TEMPERATURE IN THE LOWER 20S. SOUTHEAST WINDS

AROUND 5 MPH...BECOMING WEST AFTER MIDNIGHT. CHANCE OF SNOW

90 PERCENT.

.

.FRIDAY NIGHT...PARTLY CLOUDY IN THE EVENING...THEN CLOUDY WITH

SNOW LIKELY AFTER MIDNIGHT. SNOW ACCUMULATION OF 1 TO 3 INCHES

POSSIBLE. LOWS AROUND 10 ABOVE. WEST WINDS AROUND 5 MPH...

BECOMING EAST AFTER MIDNIGHT. CHANCE OF SNOW 60 PERCENT.

.SATURDAY...SNOW. COLD WITH HIGHS IN THE LOWER 20S. EAST WINDS

AROUND 5 MPH...BECOMING NORTH IN THE AFTERNOON. CHANCE OF SNOW

80 PERCENT.

.SATURDAY NIGHT...PARTLY CLOUDY. LOWS AROUND 12. NORTH WINDS

AROUND 5 MPH.

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That's pretty crazy... we are at the same snowfall on the season so you'll probably pass our snowfall down here in the town of Stowe with these next events. But we got absolutely shut out in October. Your area over towards Pete (the Berkshires in general) may have the most snowfall out of New England this winter, aside from 1,500ft+ along the northern Green Mountain spine.

Yeah, it's pretty wild thanks to that epic meso band we had in the 10/29 storm. You've had more snow since October due to the usual upslope type storms. Minus October, I've had only 19.7", which is considerably below normal. Goes to show how one or two storms can skew seasonal snowfall totals. This type of thing definitely happened in SENE in the 2005 winter when they had more than many parts of NNE.

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Yeah, it's pretty wild thanks to that epic meso band we had in the 10/29 storm. You've had more snow since October due to the usual upslope type storms. Minus October, I've had only 19.7", which is considerably below normal. Goes to show how one or two storms can skew seasonal snowfall totals. This type of thing definitely happened in SENE in the 2005 winter when they had more than many parts of NNE.

What did you end up with in the Oct storm, Mitch? The band hung over me for several hours and I wound up with 2', but you were ground zero with that bad boy.

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Yeah, it's pretty wild thanks to that epic meso band we had in the 10/29 storm. You've had more snow since October due to the usual upslope type storms. Minus October, I've had only 19.7", which is considerably below normal. Goes to show how one or two storms can skew seasonal snowfall totals. This type of thing definitely happened in SENE in the 2005 winter when they had more than many parts of NNE.

First comparison I've seen to that winter. :lol:

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So would I, that would get us to an average winter. We could do it, especially if February and March produce. I believe Pete has said that he is already over 50".

51.75". Even though Scooter and Joe don't want the October snow to count. I'm thinking a big Feb/March couplet like 1957.

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