Jump to content
  • Member Statistics

    17,587
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

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


HoarfrostHubb

Recommended Posts

NAM is much flatter...just look at the height lines out ahead of the system. This is due to the GFS having a really involved 2nd s/w.

Toggle those two:

http://www.meteo.psu...N_0z/avn84.html

http://www.meteo.psu...F_0z/wrf84.html

to my weenie eyes, they both had the surface just west of the GL, the 0 line at 850 are real, real close and precip signature about as close as you can get at 84 hrs away on 2 diff models

at least that's what I saw

Link to comment
Share on other sites

  • Replies 1.6k
  • Created
  • Last Reply

not really the graident really weakens as the storm moves in, the timing is not good. The high retreats to the NW.

That is pretty much true of every gradient storm we have. This solution overcomes the cold fairly easily with the shortwaves to the west very amplified. So it is a quick snow to rain.

Link to comment
Share on other sites

Shortwave number 1 actually loops up into James Bay...The Euro never lets it get north of the US/Can border. That is the biggest difference between the two on the first sytem. There is also some extra interaction with wave #2 here by the GFS.

But with wave number one looping straight up to the west like that, the cold air has really no chance and the advection is pretty weak initially. So there really isn't much precip while the cold air is in place.

Link to comment
Share on other sites

That is pretty much true of every gradient storm we have. This solution overcomes the cold fairly easily with the shortwaves to the west very amplified. So it is a quick snow to rain.

we have had many graident storms in the past where the high gets traped and doesnt retreat, even with the primary over Chicago or Detroit. Even if the cold just gets locked at the low levels and we get sleet or zr. The psuedo 50/50 low is too far NE and while there is blocking, its not a classic west based NAO. Combined those factors with the powerhouse pac jet and displaced PV, its not a great look for snow anywhere in the NE.

Link to comment
Share on other sites

we have had many graident storms in the past where the high gets traped and doesnt retreat, even with the primary over Chicago or Detroit. Even if the cold just gets locked at the low levels and we get sleet or zr. The psuedo 50/50 low is too far NE and while there is blocking, its not a classic west based NAO. Combined those factors with the powerhouse pac jet and displaced PV, its not a great look for snow anywhere in the NE.

I agree its not a "great look". But it doesn't have to be to get snow.

What did you call the Euro? It never let the -4C 850 line get N of the NH/MA border in this event. Its very possible to get snow in this pattern. It also might fail, That's been repeatedly said today.

Link to comment
Share on other sites

I agree its not a "great look". But it doesn't have to be to get snow.

What did you call the Euro? It never let the -4C 850 line get N of the NH/MA border in this event. Its very possible to get snow in this pattern. It also might fail, That's been repeatedly said today.

yes the euro is a better look and we still have a few days before the 1st wave, hopefully the trends of the past few gfs runs abate.

Link to comment
Share on other sites

That was pretty fugly on the whole... even that first event was really warm. I sort of expect a warm solution from something really amped up, but if that first event is warm... good luck on the second one.

Some other December's with real cold air around, the 0C H85 temps being modeled, would be -10C in other storms, with 0C much closer to the actual low. Then we really would be looking at a really sweet time on the whole for most on here.

Link to comment
Share on other sites

That was pretty fugly on the whole... even that first event was really warm. I sort of expect a warm solution from something really amped up, but if that first event is warm... good luck on the second one.

Some other December's with real cold air around, the 0C H85 temps being modeled, would be -10C in other storms, with 0C much closer to the actual low. Then we really would be looking at a really sweet time on the whole for most on here.

Ggem putting more toast in the tub too

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...