Meteorologist, Winter Weather Specialist, and Snow Storm Chaser. Certified Airman 👨🏻✈️ PSU 2008. Wilkes U. 2016
Northeast PA
Joined February 2013
- Tweets22.7K
- Following351
- Followers16.8K
- Likes38.2K
Pinned Tweet
Polar Vortex Day 2026
Why do we track the #PolarVortex ?
Watch and find out!
It was a pleasure meeting all the folks that came out to celebrate the return of the Polar Vortex to the Northern Hemisphere with the 6th Annual Polar Vortex Day at the North Pole inside Knoebels Amusement Resort
Winter Forecast Season has Officially Begun!
#winteriscoming
#wxtwitter #wxX
The Polar Vortex has officially entered a Sudden Stratospheric Warming Event as zonal winds have now reversed to Easterly.
It is coinciding with a snow forecast in my neck of the woods. Coincidence?
Maybe.... Maybe Not.
15z RAP Snow Accumulation Animation
If this is correct, it's going to be an interesting morning in NEPA
#PAwx #NYwx #wxtwitter #wxX
Model Snowfall Comparison
Here is a look at what the models are showing for snow tonight and tomorrow.
OFFICIAL FORECAST 👇
Locations above 800' in NEPA and Southern NY have nearly a 100% chance of snow. The Bullseyes will likely be in Sullivan County PA and the Catskills of NY.
I expect coatings to an inch or 2 at around 800 feet (this would include most of the Wyoming Valley).
Areas above 800 feet could see 2-4" of accumulation while the highest elevations such as Laporte PA in Sullivan County and the Catskills of NY could squeeze out 4-8".
~Meteorologist Mark Margavage
#PAwx #NYwx #wxtwitter #wxX
Ruh Roh!!!
The 0z GFS is looking A LOT like the RAP runs I have been showing...
They have a thump of snow on the back side of this storm. It too now gets the snow very close to NYC with a Bullseye in NEPA and the Catskills.
#PAwx #NYwx #wxtwitter #wxX
Ladies and Gentlemen... I present to you the 21z RAP for your viewing pleasure.
Dare I say it...?
I am starting to get excited!
#PAwx #NYwx #wxtwitter #wxX
EDIT: The original post contained the 15z surface animation with the 21z snow map... that has been fixed... oops.
3
625
The Long Range European Model is sending a clear signal if you know how to read it!
#wxtwitter #wxX
Woah... 🫢
Hot off the presses, the RAP is producing snow all the way to NYC with NEPA getting a real thump thanks to dynamic cooling.
Some non-believers are going to be shocked by this I reckon.
Model snowfall total in the comments 👇
#PAwx #NYwx #VTwx #MAwx #winteriscoming #wxtwitter #wxX
Short Range Models are showing a very dynamic situation in NEPA this weekend. Rain changes to accumulating snow... ESPECIALLY AT ELEVATIONS ABOVE 800 FEET.
In fact some of them such as the HRRR are showing quite a thump of snow Friday morning in the Northern Poconos.
Totals have not been locked in.
STAY TUNED!!!
#PAwx #wxtwitter #wxX #NEPA
Mark Margavage retweeted
Looking ahead... perhaps the CFS is trying to tell us something about the beginning of December...
#wxtwitter #wxX
Weekend Snow??
Yes, it's possible, and in some locations, likely.
Here is a comparison of snowfall totals from the most recent runs of the big 4 computer forecast models;
AIFS, ECMWF, GDPS, and GFS all valid as of 1pm Saturday.
As you can see, models still don't have this ironed out as far as snow totals go, but as far as location goes, you're going to have to be north of I-80 to see the snow, the exception being the High Ground of West Virginia.
#winteriscoming #wxtwitter #wxX
Looking ahead... perhaps the CFS is trying to tell us something about the beginning of December...
#wxtwitter #wxX