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Dec 16-20 Snow/Mix events - Going over like a fart in church


HoarfrostHubb

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Well--my daughter's 8-year old birthday/slumber party's going on. My daughter went to another room and went to sleep. Her guests are still awake and driving me out of my skull!!

AAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

WRT to the system, I still say, meh.

Give them all shawls and some coffee

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Give them all shawls and some coffee

LOL. One kid bailed and her dad picked her up. Another one (one of twins) just came down and she wants to go home, too. Is it a slumber party if everyone goes home before they fall asleep?

GFS continues the bleh look for most of SNE with #1--a bit of cold air to work with at the start. Toasters for all on round 2.

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The event beginning 144hours in this GFS run is a lot more frozen/freezing than some may think -

Cold air barreling towards the coast. It has a ton of potential and will probably bring many a white xmas. There's not even a hint yet of it dulling out and I don't think it will as it actually has cold air with it.

Rain to snow, TBD on how much.

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I think we can all say that south of the pike is 90% dead for Sunday-Monday timeframe. The 22nd is pretty close to a big snowstorm here though verbatim...get that 850 freezing line a little south and east and that's a 1-2' snowstorm verbatim.

you sure that wouldn't be a sleet storm with a warm layer around 8H , that is some rippin SE flow @850

it honestly doesn't look that good to me, even looks a bit strange to have 0c 850 that cold, with the low position and no quebec high locking in much cold.

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Hey Will - you should whip out your stats sheet and tabulate up the snowiest top 20 winters in history (regionally), and then see how much snow fell in those years before January 1

This question piqued my curiosity, so I took a quick look through xmACIS for BOS, ORH and HFD ThreadEX sties.

A big early season was not a necessity for big overall season. Double digit totals before Jan 1st obviously helped the cause, but there were winters > 90" at ORH with under 10" before Jan 1. There were at least an even split of dud Decembers in there too for all sites. Some with as much as 45" others near 5". The key was really getting at least one cool season month to double or triple the long term averages (one of which was almost always Jan or Feb).

Probably nothing earth shattering there, but moral of the story is no one should be punting winter yet.

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actually lookin at 0z nam (as it gets closer to it's accurate range) shows NE mass a bit snowier and 850 c a bit further s in NE mass. Puts ray on border of 3 inch snows with 4-5 not far away. basically bears watching still for a front end thump in my area up thru ray and esp. by andover/methuen etc

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The event beginning 144hours in this GFS run is a lot more frozen/freezing than some may think -

Unfortunately considering the projected wavelengths, the longwave trof axis once again looks to set up pretty far west. That spells nasty midwestern primary. Not impossible to pull if off, but odds favor an outcome like the one we're currently facing.

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Watches are up here prelim 5-9"

I probably could have held off on the watch, but at that point I would just be punting to the day shift for the sake of punting. I'm 50/50 that we hit 6" in 12 hours or 9" in 24, so why not pull the trigger and get word out.

The hardest part was really determining the cutoff between one event and the next right behind it.

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I probably could have held off on the watch, but at that point I would just be punting to the day shift for the sake of punting. I'm 50/50 that we hit 6" in 12 hours or 9" in 24, so why not pull the trigger and get word out.

The hardest part was really determining the cutoff between one event and the next right behind it.

Yes, the gap has closed between the 2, like to see the trends of subtle shifts further SE with that 2nd wave Bl could be a problem

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Yes, the gap has closed between the 2, like to see the trends of subtle shifts further SE with that 2nd wave Bl could be a problem

I'm less concerned with the BL than the temps aloft. I don't see much of an impetus to scour out the low level cold behind the first wave, so I'm expecting cold air to remain stuck against the mountains. Problem is that the second wave follows so quickly that there is no CAA in the mid levels, and we're left with a truly stale air mass. It's all a question of how quickly we can get the secondary to crash those heights back towards the coast.

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