Jump to content

February 11-12, 2023 | NE / Mid-Atlantic Winter Storm Speculation


Penn State

Recommended Posts

  • Admin
5 hours ago, Uscg Ast said:

Even if this came up the coast, there is no cold air to play with. This threat is unfortunately DOA.

If that incoming shortwave somehow can catch it, low probability but non zero, it'll provide enough cold for ME, NH, VT if the moisture can get pulled west enough, and perhaps even parts of CT and RI with the right interaction.

f114(2).thumb.gif.72cd7915ec2787bc323cc4e87eed061f.gif

GFS trend.

gfs_z500_vort_us_fh114_trend(2).thumb.gif.f7c855bc4c5d9bea257a0a06d2222b6b.gif

 

  • LIKE 1
Link to comment
Share on other sites

  • Admin

GYX

Quote

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Since the polar vortex moved into the mid latitudes last
weekend, any build up of cold air in the arctic has been slow,
and flow has been dominate by the sub-tropical ridging over the
Caribbean and the Gulf of Mexico. This trend seems to continue
this weekend into next week, with the CWA more on the warmer
ridge side of the southern stream. Also, with the more dynamic
SW flow aloft well to our W, It looks like any systems will be
weak and low impact.

However, the long range starts off on the colder side as CAA
advection on gusty NW winds Friday night into Saturday. Saturday
is the coldest day in the forecast, but even then highs will
make to around normal, in the mid 20s to mid 30s N to S. Winds
should die off gradually Saturday night, with some late rad
cooling possible bring minds down to 5-10 above in the mtns, and
15-20 in the S. Late Sunday into early Monday, watching coastal
low shift Operational models keep most of the precip to our S,
and suggest a chance of light snow /or rain/ around Sunday night
in the far srn zones, and ensemble means tend to follow this
idea that system stays to our S, with only a graze of the S, but
there are enough members /about 20%/, that would produce more
significant snow across the southern CWA to not be completely
confident about this yet. Beyond this, into the middle of next
week, it looks warmer with the possible of a fast moving season
around Wednesday.

 

Link to comment
Share on other sites

  • Admin

Gonna take 3-4 days for that energy sliding down the lee of the Rockies to get to the SE coast.

CODNEXLAB-GOES-East-continental-conus-08-10_21Z-20230209_map_noBar-21-4n-10-100.thumb.gif.1825f145d42cd944a57c459f111f8f86.gif

Meanwhile, the northern stream energy that's trying to catch it, just getting to the Aleutian islands.

CODNEXLAB-GOES-West-global-npacwestlarge-08-10_10Z-20230209_map_noBar-21-4n-10-100.thumb.gif.97343348b88f4d8f8aa40de6a61b59ae.gif

Can the hare catch the tortoise?

Link to comment
Share on other sites

Sterling says ….hard pressed to do much but rain…

 

LONG TERM /SUNDAY THROUGH WEDNESDAY/... The aforementioned upper low will lift out of the MS River Valley and towards the Carolinas on Sunday. Surface low pressure will quickly strengthen along the stalled frontal boundary along the eastern seaboard. This will most likely track to our south, as nearly all solutions paint that solution. The big question is, just how far south does it go? That question remains a bit unclear, though guidance is starting to at least come to some consensus. With most guidance lifting the upper low through the carolinas, becoming more negatively tilted, this favors some precipitation in our area. The biggest issue for winter lovers, outside of the mountains, is the fact that this storm has trended so much slower. The air mass in place at the surface is far from what one would want to produce snowfall. This storm is going to get all of its cold air aloft from that strong cutoff upper low. A heavy band will setup somewhere northwest of the low pressure center, and this is where the best chance for snowfall would occur outside of the mountains. But even that may not be enough for areas along the I-95 corridor, as temperatures look to be well in the upper 30s to low 40s. The best chance for snowfall lies along and west of the Blue Ridge, especially at higher elevations. This matches the ensemble means at this point as well, which paint a solid stripe of accumulating snowfall in that area. Snowfall farther east can certainly not be ruled out though at this time, but probabilities just aren`t looking as promising. As always, consult weather.gov/lwx/winter for the latest winter weather forecast updates. This storm system, having trended slower in recent days, is still around 4 days out, so many things can change in that amount of time. As said in previous forecasts, cutoff upper lows are notoriously difficult to handle, and any small deviation in track/speed could spell big changes to the forecast. Precipitation should be coming to an end by Monday morning at the latest. The last several runs in guidance have held pretty firm with the timing and haven`t shown any further signs of a slowing trend. So, am growing increasingly confident in a mostly dry Monday, at least during the afternoon.

  • SAD 1
Link to comment
Share on other sites

1 hour ago, WeatherFlash said:

Brutal winter lol

The worst ever.  Ugh!  Once this winter I had to clear off 1/4" of snow off the car.  No shoveling though.  I'm wiped out from that.  I need a long vacation to recover.

  • FACEPALM 1
  • LAUGH 2
  • SNOWMAN 1
  • MELTING 1
Link to comment
Share on other sites

Thank God that silly storm is heading out to sea, so I get nothing. Good because I could use a dry stretch. Weird how I've gotten used to the idea of no snow in this winter. It's like I step outside and even though it's February, I'm accustomed to the idea of seeing a brown ground and rain every few days, just like your typical March/April weather.

Edited by TheComet
  • HOT 1
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
  • Recently Browsing   0 members

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