Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
Mesoscale Discussion 1950
NWS Storm Prediction Center Norman OK
0342 PM CST Fri Nov 26 2021
Areas affected...portions of western New England
Concerning...Heavy snow
Valid 262142Z - 270045Z
SUMMARY...An uptick in heavy snow is possible over the next several
hours across portions of New England as temperatures cool and local
topography enhances precipitation development. Snow rates may
occasionally surpass 1 inch per hour resulting in low visibility and
fast accumulation.
DISCUSSION...As of 2140 UTC, regional water vapor imagery showed a negatively-tilted upper low across southern Canada and upstate NY.
across much of New England ahead of the upper low, synoptic ascent
was supporting widespread precipitation in the form of rain and
snow. While initially above freezing, surface temperatures ahead of
the upper low have begun to drop in response to dynamic cooling from
precipitation increasing in coverage and intensity, as well as
increasing low-level cold advection from west/northwesterly
low-level flow. NEXRAD and local observations from KNEX show a band
of heavier snowfall, with rates of 1 to 2 inches per hour, has
developed near the NY, MA and VT borders. Likely enhanced by local
topography and weak 850-700 mb frontogenesis, this snow band may
produce occasional heavy snow with rates of 1-2 inches per hour as
it slowly moves north and east through this evening.
A change over to snow and the potential for periodic heavy snow will
also develop farther north across portions of western VT and NH as
surface temperatures continue to cool this evening. Model soundings
show surface temperatures falling below freezing by 22-23z with
steadily increasing DGZ depths. The favorable large-scale ascent and
sufficiently moist/cool airmass should support the potential for 1
inch per hour snow rates for a few hours before forcing weakens and
shifts to the east later this evening.
Quite cold today. Morning lows were in the low teens in the northern and western suburbs. The high temp today by me was only 28 degrees. Big warm up later next week
Still below normal today and tomorrow but warming up for the middle of the week. Won't last long however.
Look at all that cold in Alaska and below it the well above normal temps out west. Strange pattern. I think it has something to do with all the cool waters in the GOA
I don't know but it seems to me the ECMWF is favoring the MJO moving into Phase 6 which would promote ridging out west. That might help dump some of that super cold air up in Alaska into the eastern 2/3rds
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
