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Potential winter threats


tombo82685

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I seem to remember last December starting off with tons of blocking and potential but nothing happening initially which leads to tons of angst. Then BOOM we got 12/19. Seems like some patience may be needed here. I know this level of blocking/-NAO is very unusual in such a strong Nina but I think the Atlantic is going to help us most of this winter....persistence FTW.

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When the Euro shows something like this I always remind people it got the pressure within 1mb and the center within 50 miles of the 96 Blizzard at 168 hours.

I think its important to note that this isn't a model predicting a storm with an UNFAVORABLE upper level setup. We have a robustly -AO, -NAO, 50/50 low and what looks like a neutral to maybe slightly pos PNA for a second just in time for some amplification of this system. Its a lot different than fantasy land GFS (or for that matter EURO since at 240 it often shows storms that dont end up as advertised) showing a large storm in a seemingly unfavorable set-up. Just an important fact to keep in mind...

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I don't think many of us were remember that... :P

but yeah that storm dumped 20" in ACY and not a flake in NYC from what I read.

It was basically a model error in the short range the opposite of what occurred in the January 2000 event...the NGM model was grossly off with the track and evolution of the system but I don't think we'll ever see that bad of a forecast inside 24 hours ever again.

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It was basically a model error in the short range the opposite of what occurred in the January 2000 event...the NGM model was grossly off with the track and evolution of the system but I don't think we'll ever see that bad of a forecast inside 24 hours ever again.

not to mention that was almost 22 years ago and while our modeling isn't perfect (far from it) its a lot better and more comprehensive then it was back then

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What kind of ratios are we talking in the interior of PA?? 12:1?

ok i through this together really quickly. Im going to start from greatest amt to least amount. basically take 20 miles east of nyc and draw a line straight down thats that seperates snow from rain

googlearth1.jpg

pink- 2-2.5

whitish yellow 1.75-2

blue-1.5-1.75

darker blue-1.25-1.5

lime green-1-1.25

turquise-.75-1

yellow-.5-.75

pinkish red-.25-.5

greenish blue-.1-.25

pinkish purple-.01-.1

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not to mention that was almost 22 years ago and while our modeling isn't perfect (far from it) its a lot better and more comprehensive then it was back then

The modeling was tremendously better in 1995 than it was in 1989...the 3-4 year period from 1989 to around 1993 saw the biggest advancement in forecast models of any 3-4 period since 1970 by a mile.

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I can only think of what this board would have been like during President's Day week of 1989.

Considering it was going to be the first real all snow event since 1983, probably very hyped....January 1987 did drop a foot of snow on many parts of the NYC metro but the amounts varied quite a bit with some places seeing as little as 6 and others around 12-13...it also switched to rain and sleet...the 1979 event would have been priceless as well, it was very close to the 2/6/10 event but was shifted maybe 50-75 miles more north.

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hr 384 brings siberia to south central canada just about to enter northern plains

haha beat me to it...this thing is coming even further south if we were to extrapolate...looks to possibly have a storm also with energy on the Pac coast. Cold run 850s dont rise above 0 (and temps for the matter for the most part) for the hole run past 60 hrs. Also long duration weird looking storm from 240ish on

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