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December 16-17, 2020 Winter Storm Obs/Nowcasting


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I’m in Hershey. Yesterday was jackpotted here. Now I’m not sure what the hell to expect. Trend early in the day was westward. Now it seems more of an oscillation between models. Guess... we nowcast?

My prediction is 10-30” of some sort of mostly frozen precipitation.

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2 minutes ago, medmax said:

I’m in Hershey. Yesterday was jackpotted here. Now I’m not sure what the hell to expect. Trend early in the day was westward. Now it seems more of an oscillation between models. Guess... we nowcast?

My prediction is 10-30” of some sort of mostly frozen precipitation.

I’d go 1-30” just to be safe 

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5 minutes ago, Zdudswx said:

There’s so much discrepancy just 12 hours out. Some mesos trending west, some East. No real consensus on anything 

There is pretty good consensus that areas east of I-81 gets some snow, then sleet/rain, and then a little snow on the backside. Totals will depend on the length of the front thump and backside snows. Places near DC will not get much snow. Don't be fooled by the snow maps. Most of them interpret sleet as snow and will be way off.

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Just now, mattie g said:

Should be great to go into the office in DC tomorrow. Everyone will probably be teleworking and I’ll be up on the 10th floor watching the cold rain fall to the ground as cold rain.

If your buildings tall enough, you may be able to catch a pellet or two before it melts from the rooftop.

 

I kid, I kid. 

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4 minutes ago, medmax said:

I’m in Hershey. Yesterday was jackpotted here. Now I’m not sure what the hell to expect. Trend early in the day was westward. Now it seems more of an oscillation between models. Guess... we nowcast?

My prediction is 10-30” of some sort of mostly frozen precipitation.

Ask @mattie g what his call is for Harrisburg, PA.  I’m sure he has a prediction.

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2 minutes ago, PhineasC said:

There is pretty good consensus that areas east of I-81 gets some snow, then sleet/rain, and then a little snow on the backside. Totals will depend on the length of the front thump and backside snows. Places near DC will not get much snow. Don't be fooled by the snow maps. Most of them interpret sleet as snow and will be way off.

Can smell the sour grapes all the way from here. :( Next time, friend. 
 

there will be plenty east of 81 who see warning level snowfall. 

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1 minute ago, losetoa6 said:

Phin

Every model shows below freezing surface here through duration and I'm east of 81 so no rain here most likely but mixing definitely. I think we do pretty good here accumulation wise . I'm going with 8-13" total storm . 

That's possible. I could see you getting 8 inches or so. You will have an interval of sleet or ZR in the middle, totals will depend on how long it lasts and if the CCB stuff materializes, which is never a sure bet around here. 

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48 minutes ago, PhineasC said:

It's pretty clear what's happening, but let the football spiking continue in the ever-shrinking jackpot zone south of the Mason-Dixon.

If I can get 4-6 before a changeover and some backside snow, I’d be fine with that. I hate sleet but it’s better than rain I suppose.

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