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Central PA Winter 2022/2023


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8 minutes ago, paweather said:

Is the ICON drunk? LOL How can a low that far inland be snow for us? 

because it is norther stream energy dropping SE and pops a secondary below us.  Look at 540 and you'll see that antecedent cold is deep enough and stays below us, and keep our precious column cold enough.  Next panel has far SE taintin to rain for a wee bit after most precip falls as snow. 

Mind you thats a verbatim analysis of 1 model run thats a week out, but since its a week....and a big week....worthy of mention. 

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5 minutes ago, pasnownut said:

because it is norther stream energy dropping SE and pops a secondary below us.  Look at 540 and you'll see that antecedent cold is deep enough and stays below us, and keep our precious column cold enough.  Next panel has far SE taintin to rain for a wee bit after most precip falls as snow. 

Mind you thats a verbatim analysis of 1 model run thats a week out, but since its a week....and a big week....worthy of mention. 

Definitely worthy of a mention!

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In a lull in the precip currently, hopefully can get some regen of the precip shield back this way this afternoon. Something the HRRR continues to advertise later this afternoon (after about 19-20z) showing a renewed surge of precip (which should be mostly snow with the cooling aloft) into the central counties likely associated with the deepening of the coastal low. That’s going to play big on what the eventual snow totals end up being in the AOO-UNV-IPT corridor. CTP had already backed off some on totals due to models starting a couple degrees too cold with this initial phase of the precip shield. 

What’s also likely to happen as the low tracks across the Chesapeake into the Delmarva this afternoon/eve  is that will eventually push the R/S line near or more likely above Harrisburg in the Sus Valley, so the next few hours is likely the time to put something on the ground for the LSV’ers that are seeing frozen precip. 

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FirstHand Weather:

Good gosh, 12z GFS. As mentioned in other posts, the upcoming pattern on and around Christmas will support low pressure development along the Gulf and/or the Southeast coast, then driving up the eastern seaboard.
But model guidance will likely be all over the place over the next few days on who gets wintry precip around Christmas. Nonetheless, it’s been a long time since I’ve been this excited about an upcoming pattern in December
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