Jump to content
  • Member Statistics

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

Western PA/Pittsburgh Winter 2021/22 Discussion


meatwad
 Share

Recommended Posts

5 minutes ago, Rd9108 said:

So EPS the west leaning members increased and the east members got further west. I'd say that's a solid trend let's just hope this doesn't wind up coming right up our neighborhood.

Mean snowfall increased a bit from 12z. 

  • Like 1
Link to comment
Share on other sites

34 minutes ago, Rd9108 said:

ICON is east of its 12z run fwiw

I know people use the ICON as an additional resource, but I really don't think the model has much value.

That said, this storm becoming a Central PA special is definitely not out of the question.  Unfortunately, if it becomes a stacked and occluded low, you're going to have a tight bowling-ball precip shield.  To get the best snowfall then you'd have to be on the western border of the central LP with not much room for error.  Obviously the exact track is still waffling, but you get this scenario and move the low back east away from us and suddenly PIT's potential goes from 8-12" to 2-4" or the like.  It's not a normal Miller A with expansive overrunning.

The ensembles appear to keep lagging behind the operationals.  If the operationals start jumping east, watch for the ensembles to catch up in a couple cycles.  TBD.

Link to comment
Share on other sites

GFS is so far west almost that we would potentially have dry slot and mixing issues. It pushes the "bullseye" up into western OH though we still get crushed and for us verbatim would be an all time impactful storm if we get ten inches and ice.

 

That said, have we EVER seen a track like this actually verify? I remember a storm about 12-15 years ago that was supposed to destroy us but ended up an Ohio blizzard and fringed us and we mixed.

Link to comment
Share on other sites

5 minutes ago, KPITSnow said:

GFS is so far west almost that we would potentially have dry slot and mixing issues. It pushes the "bullseye" up into western OH though we still get crushed and for us verbatim would be an all time impactful storm if we get ten inches and ice.

 

That said, have we EVER seen a track like this actually verify? I remember a storm about 12-15 years ago that was supposed to destroy us but ended up an Ohio blizzard and fringed us and we mixed.

I dont buy that rain/snow map. Low track still look really good for us. If it take that track through Harrisburg we should be real good

Link to comment
Share on other sites

1 minute ago, MikeB_01 said:

I dont buy that rain/snow map. Low track still look really good for us. If it take that track through Harrisburg we should be real good

I think it is more of when the low retrogrades almost all the way back to Cumberland Maryland is where the issues would show up.

Link to comment
Share on other sites

Overnight runs all still look decent from quick looks. NWS has a decent discussion on the storm and addresses that dryslot between precip maxes near the low center and the deformation band that we have been seeing. I'm not sure what to look for on that, other than getting the low center slightly further east so we stay firmly in the deform band.

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
Broad longwave troughing will persist across the eastern CONUS this
weekend and likely through the entirety of next week, bringing
persistent cold weather and occasional snow chances to the Upper
Ohio Valley and Allegheny Mountains.

Attention is on the upcoming winter storm Sunday into Monday. Latest
deterministic and ensemble guidance has come closer in agreement
with confidence slowly increasing towards an accumulating snowfall
event for much of the forecast area. By late Saturday night, the low
will begin to track from the TN Valley area northeastward into the
Mid-Atlantic and then eventually New England by Monday. There`s been
nearly unanimous westward shift in the latest ensemble suites, with
less energy diverted into developing a strong sfc low along the
coastline.

If latest consensus were to verify and the center of the surface /
low-level low were to track northeastward just east of the spine of
Appalachia, this would place the Upper Ohio Valley and Allegheny
Mountains in a climatologically favorable(-for snow) spot on the
north/northwest side of low, within the deformation snow band and
then wrap around moisture and cyclonic flow as the low departs.
However, there is often times an axis of lesser precip/snow,
essentially a dry slot, between the low center and the deformation
snow band. For this reason, it`s unlikely we`ll be able to provide a
high-confidence accumulation forecast until perhaps just 24 hours.
That said, p-type is just about a non-issue with this storm given
the colder air in place, so we can at least say with confidence that
snow will fall... we`re just unsure how much at this time. Latest
ensemble means do suggest 3+ inches is becoming probable in much of
the area east of I-77, with 6 inches or more entirely possible
wherever banding occurs. Winter storm watches/warnings are likely in
the coming days as this system gets closer.

After the system departs Monday, cold northwest low-level flow off
the Great Lakes will likely result in some chance for additional
snow into Tuesday, followed by another quick-hitting clipper
creating a chance for light snow on Wednesday as well.
  • Like 1
Link to comment
Share on other sites

Just now, Ahoff said:

I fully expected SE shifts overnight.  I resigned myself to that, but now I'm getting more excited than I want to be.

I've just never seen us in the bullseye for this long.  Feels like it has to be different, but still worried, lol.

It’s not the mixing, nor a miss east, that will get us. It’s going to be the dry slot this time.

Link to comment
Share on other sites

6 minutes ago, KPITSnow said:

That’s absolutely ridiculous

It looks like they took the first paragraph of the previous discussion, reworded it slightly (it must have been too long), and didn’t carry any of the discussion about the Sun-Mon storm from the 3:30 version.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...