Jump to content
  • Member Statistics

    17,603
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Central PA Thread - Met. Winter 11-12 Obs/Disco


PennMan

Recommended Posts

This would be my first guess... looks like majority of the precip will be rain for most of us. We'll see if 12z suggests anything different. The bigger story will be the fall in temperatures creating a big black ice problem for the Friday morning commute.

UNV: Dusting - 1"

IPT: Dusting - 1"

MDT: Flurries

JST: 2" - 4"

PIT: 2" - 4"

May not see much snow around here but this is def a worry!

back end of the HRRR runs now starting to come into period of interest for tonight... I was taking a look to see how it compared to 0z NAM run last night for 0z tonight

post-285-0-93883900-1326376878.jpg

post-285-0-73579500-1326376889.jpg

Link to comment
Share on other sites

  • Replies 1.6k
  • Created
  • Last Reply

OT a bit but you guys will find this interesting. South Lake Tahoe, CA has only received a trace of snow this season...by now they should be at 57"!

But anyway. I'm rooting for an inch or so to at least whiten the ground here. And there should at least be some snow falling the next few days. Looks like CPT is pulling back on amounts a bit for eastern/southern areas of the CWA (up to and including my area). Makes sense given the shift westward with the best dynamics as others have said.

Link to comment
Share on other sites

Yep, as mentioned yesterday winds prognostication are always a bit too high than actual verification as the event approaches. Advisory criteria is possible briefly especially on the ridges, but lack of complete mixing throughout the day will prevent the highest winds around 925mb from reaching the surface. I do think some 50mph gusts are likely along the front.

Link to comment
Share on other sites

Visible satellite indicating breaks in the stratus deck south of I-80 and complete clearing south of the Mason-Dixon line. Already 46F here along Blue Mountain with overcast conditions. It will be critical to track the northward advancement of the full warm sector over Virginia currently. It is likely temperatures verify at or above MOS guidance today.

Link to comment
Share on other sites

Yep, as mentioned yesterday winds prognostication are always a bit too high than actual verification as the event approaches. Advisory criteria is possible briefly especially on the ridges, but lack of complete mixing throughout the day will prevent the highest winds around 925mb from reaching the surface. I do think some 50mph gusts are likely along the front.

You've been bringing it lately man. Great stuff all around.
Link to comment
Share on other sites

Visible satellite indicating breaks in the stratus deck south of I-80 and complete clearing south of the Mason-Dixon line. Already 46F here along Blue Mountain with overcast conditions. It will be critical to track the northward advancement of the full warm sector over Virginia currently. It is likely temperatures verify at or above MOS guidance today.

Solid overcast here, misty and still 37, our expected high was 46. I am reluctant to say this due to how quickly satellite images can change and clouds can erode, but the breaks south of I-80 are being gobbled up. At least now, based on the current satellite trend, I don't think we see much sun if any. So, not sure if we get to 46 since we've gone up one degree in four hours. Different story to our south, of course. Might not mean anything, however.

Link to comment
Share on other sites

I really don't know what to expect out of this. Could be a surprise. I am hoping I am sitting here later and it starts raining for like 30 mins and then bam it is snowing hard for like 2 hours and I pick up 1.5" Would be nice. If we can get 2-3 hrs of decent snow at .5-1" per hr that is good enough for me.

Link to comment
Share on other sites

Solid overcast here, misty and still 37, our expected high was 46. I am reluctant to say this due to how quickly satellite images can change and clouds can erode, but the breaks south of I-80 are being gobbled up. At least now, based on the current satellite trend, I don't think we see much sun if any. So, not sure if we get to 46 since we've gone up one degree in four hours. Different story to our south, of course. Might not mean anything, however.

Yeah, you may be able to escape any clearing looking at the last few satellite images. For the southern areas, the clearing line is almost up to the Mason-Dixon line. Knowing the density of CAD across central Pennsylvania, the clearing probably will not be able to reach any farther north than the Blue Ridge line along I-76.

Link to comment
Share on other sites

Yeah, you may be able to escape any clearing looking at the last few satellite images. For the southern areas, the clearing line is almost up to the Mason-Dixon line. Knowing the density of CAD across central Pennsylvania, the clearing probably will not be able to reach any farther north than the Blue Ridge line along I-76.

Good point.

Link to comment
Share on other sites

The boundary layer is still looking very mild tonight and tomorrow morning as the ULL rotates through. We are going to need a dynamic squall to cool the column if we want any snow even as far northwest as the AOO, UNV, IPT line. Once northwest of the Alleghany Front there is a high chance of whiteout conditions briefly with light to moderate accumulations. But for areas southwest of there, this is not an impressive setup for snow accumulations (BL is just too mild).

A similar squall line moved through back in February 2008 where the BL cooled below freezing allowing for snow accums, but pre-squall 2m temperatures were in the upper 30s (not the mid to upper 40s).

f18.gif

Link to comment
Share on other sites

Just after i posted about the sun coming out, i went into a meeting. The sun was out for only a short time. looks really gloomy

I'm seeing the same thing. Sun had just broken through in Lancaster (Neffsville) as I was leaving. Leaving east Petersburg (2-3 miles away heading west), there was a definite cloud boundary a mile or two west of the landisville exit of 283. Completely overcast from that point west to Middletown.

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...