nasty looking cell southeast of Syracuse. There's your elevated supercell and what is indicative even just along/north of WF
EDIT: actually may not be that elevated
SW CT very much in the game. The warm front looks to even be making progress. And even just on the north side of the front you have to watch for elevated supercells with large hail potential. The instability/thermal gradient with this front needs to be kept in mind.
where the warm front moves through skies should clear relatively quickly. On satellite you basically go from startacrap to naked sun bathing within the span of someones yard
It's due to track of sf low. But the warm front should get into CT...probably not through whole state. The greatest question just seems to be destabilization...HRRR doesn't want to generate all that much...nor other models. Maybe clouds too much of a problem but with those steeper lapse rates nearby and high dews won't take much heating to crank instability.
bufkit soundings not nearly as unstable cross Waterbury, CT (from all models) as they were yesterday but this is pretty impressive to see from the HREF
Today is just going to be a question of instability I think. I do think we'll get the warm front into CT and probably very close to Hartford. We're talking about effective bulk shear values approaching 60 knots with effective helicity values of 300 m2s2...if we push MLCAPE ~2,000+ J/KG (which is possible) there is going to be some big time trouble today.
Bust in the TOR department but there were several microbursts. Lapse rates were forecast to be pretty good actually but AM crap sort of weakened them. Never did generate a good amount of MLCAPE and shear was just too much for the updrafts and that hurt convection from becoming deep
I think this composite overdoes things at times but I mean...the ingredients are there and like you said, where warm front settles it's probably going to be big. Also noting that 18z is kinda focusing the boundary a bit more SW...also noting that forecast soundings actually back the llvl winds a bit (and not in the good way)
I don't recall ever seeing a 60 up this way...though it may have happened with 05/15/2018. If the damaging wind signal becomes widespread I think we could see a moderate risk.
probabilistic probability of a significant tornado (EF2+) based on a combination of forecast mixed-layer CAPE, mixed-layer LCL height, 0-1km helicity, and bulk shear
Debating if I want to do BDL tomorrow or go towards SW CT. Just tough to find good areas with wide open views down there. Could do Newtown...there's a few spots I know. Danbury is a no-no given the COVID spike.
I recall somewhat of a similar setup...forget there year but it was early 2010's. I think there was an EF-2 or even EF-3 around the Albany area which occurred with a supercell on the northern fringe of the warm front and they only had temperatures in the 60's. It was a crazy gradient with temps in PA near 90 and dews around 70. I remember chasing that day with my friend and we had gone into PA. Even though the temps were rather chilly the storm was drawing inflow from the southwest where instability was large
Might actually be a setup where you may want to be on the northern fringe of the warm front. That's where you'l not only maximize the shear but SR inflow may actually be from the warm sector so instability is still being utilized.