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Central PA Late January Thread Part III


Rick G

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Wow the NWS is very bullish on ZR here in State College!

Tuesday Night: Freezing rain. Low around 22. East wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

A blend of the 00z NAM and GFS could yield a very icy solution across much of central PA. As it is, the GFS is likely underdoing the low-level cold air...

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NWS for MDT:

Monday Night: Snow. Low around 20. Calm wind becoming east around 5 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Tuesday: Snow before 1pm, then snow and freezing rain. High near 32. East wind between 3 and 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Tuesday Night: Freezing rain. Low around 26. East wind between 5 and 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday: Rain or freezing rain, becoming all rain after 1pm. High near 38. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

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Wow the NWS is very bullish on ZR here in State College!

Tuesday Night: Freezing rain. Low around 22. East wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

A blend of the 00z NAM and GFS could yield a very icy solution across much of central PA. As it is, the GFS is likely underdoing the low-level cold air...

Here's mine 30 miles down the interstate from State:

Monday Night: Snow, mainly after 7pm. Low around 16. East wind between 3 and 8 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Tuesday: Snow before 1pm, then freezing rain likely. High near 29. Southeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Tuesday Night: Freezing rain. Low around 22. Southeast wind between 7 and 9 mph. Chance of precipitation is 90%.

Pretty much the same 22 degree nighttime low. I mean somethings gotta give there. There's either gonna be more sleet involved or if there's going to be freezing rain those temps aren't gonna last in the low to mid 20s for long. However the amount of time in between waves might allow surface temps to sneak up during the day Tuesday if we have any kind of a significant break and that might potentially yield more of an all zr/rain second wave.

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The trend seems to be stronger and warmer. If I had to guess, which I stink at, I would say NWS drops WSW for all but Northern Strip of counties, goes with WWA for rest of commonwealth for 1-4 inches of snow followed by .10 to .20 accretion of ice....not looking like the biggie we thought.

:arrowhead:

Only the GFS/GGEM have this trend. SREF and NAM are weaker and colder. Read the met posts in this thread! We don't have much of a chance at plain rain.

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The trend seems to be stronger and warmer. If I had to guess, which I stink at, I would say NWS drops WSW for all but Northern Strip of counties, goes with WWA for rest of commonwealth for 1-4 inches of snow followed by .10 to .20 accretion of ice....not looking like the biggie we thought.

I really doubt they drop any WSW. I also don't think that tonight's runs were significantly warmer than earlier runs (other than maybe the 18z, but they were quite cold). The NWS knows what they're doing and in this setup with a strong/cold high pressure to the north they know the cold will be under-forecasted. It will be very difficult, in my opinion, to have any region in central PA see mainly rain. Places north of I-80 should stay all frozen/freezing. This still has all the makings of being the biggie we thought, so lets sit back and see what unfolds! Snowman.gif

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I really doubt they drop any WSW. I also don't think that tonight's runs were significantly warmer than earlier runs (other than maybe the 18z, but they were quite cold). The NWS knows what they're doing and in this setup with a strong/cold high pressure to the north they know the cold will be under-forecasted. It will be very difficult, in my opinion, to have any region in central PA see mainly rain. Places should stay all frozen/freezing north of I-80 . This still has all the makings of being the biggie we thought, so lets sit back and see what unfolds! Snowman.gif

I hardly ever ask IMBY questions but I'm trying to make plans during this time, In your opinion how much frozen precip stays at snow vs. sleet or ZR, I live directly on the NY/PA border? In my own opinion I would expect 7-10" of snow then change over to sleet, but I'm just curious

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I hardly ever ask IMBY questions but I'm trying to make plans during this time, In your opinion how much frozen precip stays at snow vs. sleet or ZR, I live direcly on the NY/PA border? In my own opinion I would expect 7-10" of snow then change over to sleet, but I'm just curious

I think your call seems pretty reasonable. If the colder NAM turns out to be correct, it could be mostly snow and you would get double digit snowfall before a changeover (if it even does change over). Looking at the GFS at face value, it may be more like 4-7" before sleet and even rain. At this point, I think the GFS will get colder. Especially now seeing the EURO is colder too. Good luck up there!

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I think your call seems pretty reasonable. If the colder NAM turns out to be correct, it could be mostly snow and you would get double digit snowfall before a changeover (if it even does change over). Looking at the GFS at face value, it may be more like 4-7" before sleet and even rain. At this point, I think the GFS will get colder. Especially now seeing the EURO is colder too. Good luck up there!

Thanks I appreciate it! , hopefully we can stay all snow that would be amazing and totally surprise me. If I can get over a 12" of snow I would jump for joy. I just hope you guys stay out of the ice threat, that stuff is horrible to deal with, hopefully the Euro trends even colder

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Thanks I appreciate it! , hopefully we can stay all snow that would be amazing and totally surprise me. If I can get over a 12" of snow I would jump for joy. I just hope you guys stay out of the ice threat, that stuff is horrible to deal with, hopefully the Euro trends even colder

Bring on the ice! whistle.gif

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I think your call seems pretty reasonable. If the colder NAM turns out to be correct, it could be mostly snow and you would get double digit snowfall before a changeover (if it even does change over). Looking at the GFS at face value, it may be more like 4-7" before sleet and even rain. At this point, I think the GFS will get colder. Especially now seeing the EURO is colder too. Good luck up there!

Yea trying to judge from the Philly thread pbp it sounds as if the low attempts to secondary as I think I saw tombo mention about a 1004 over DC. Def a big step toward the NAM in that regard. Sounds like the Euro still evacuates the cold early in the game. If we do end up with a storm to try to transfer at around DC that would probably make for a ptype scenario like the colder NAM. And actually the GFS does do the same thing, except its right over PA where the "secondary" shows up.

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