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Discussion-OBS Weekend Feb 8-9 Another mainly 12 hour snow-ice event possibly changing to rain before ending Sunday. NYC-LI-S of I78 on the edge?


wdrag
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33 minutes ago, Tatamy said:

As of 6 PM you have to be north of I80 if you want to find snow in PA.  The only exception is Fort Indiantown Gap which is reporting flurries.  Everyone else is reporting ice / sleet/ wintry mix or rain.  All Pittsburgh reporting sites are reporting thunderstorms.  

so mixed precip even in the Poconos south of I-80?

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Just now, EastonSN+ said:

It's funny when you see the next line so far south in the Delmarva yet it's close to the Poconos as well. East is just as important as North in the storm.

Yes, the cold air is banked to the east.  This is similar to those suppressed systems that hit west of us but the further east you go the further south the snow gets.  This time the cold air works in our favor.

 

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1 minute ago, EastonSN+ said:

It's funny when you see the next line so far south in the Delmarva yet it's close to the Poconos as well. East is just as important as North in the storm.

Reading the central PA forum pretty much everyone is starting as then pounding sleet. Hopefully around Allentown we see the cold air make a better stand, otherwise from I-80 on south we probably just start as a pellet fest. 

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18 minutes ago, jm1220 said:

CC radar has sleet almost to Williamsport. HRRR is too cold. 

Yep, just looked at that and can see the sleet signature.  Also, the main part of my comparison was the radar intensity/precip looking much more robust and close to the HRRR as opposed to the NAM.  There have been two "trends" that concern most - less precip on the NAM and some other models, especially W and SW of NYC and faster WAA driven transition to sleet like the NAM vs. what some of the models show.  Personally, I'd rather get the higher QPF and mostly sleet than low QPF and sleet (if I can't have snow).  

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5 minutes ago, jm1220 said:

Reading the central PA forum pretty much everyone is starting as then pounding sleet. Hopefully around Allentown we see the cold air make a better stand, otherwise from I-80 on south we probably just start as a pellet fest. 

It actually sinks South as it heads East slightly.

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5 minutes ago, jm1220 said:

Reading the central PA forum pretty much everyone is starting as then pounding sleet. Hopefully around Allentown we see the cold air make a better stand, otherwise from I-80 on south we probably just start as a pellet fest. 

Even ABE is now reporting UP, but honestly the 12Z Euro showed them mixing by 01z, its just a question if the area from like SMQ ENE through the metro sees the sleet line stall

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2 minutes ago, lee59 said:

31.9 here with still a light east wind. That does not sound promising but just saw AccuWeather on channel 7 and they are still with a heavy hit of snow the first few hours putting down 2-4 around the city and 4-8 north. Maybe an inch per hour.

Dewpoints are in the low 20s so we’ll wetbulb down, but we still have an onshore wind so that will try to raise temps. Then of course we have the strong mid level WAA at 750mb. 

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37 minutes ago, Tatamy said:

Not sure where you got that radar view on the bottom from but it’s not correct.

Thanks, shouldn't have trusted the weathertap radar, lol.  Dual pol shows the sleet signature pretty well in PA; as I just said in another post, my comparison was more about the precip intensity being much closer to the HRRR than the NAM, which is still a good thing at least for now.

image.thumb.png.51ef7410ca22766358c13de762d660f0.png

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