Terpeast

Looks colder than 12z nam for the same times

Looks like 5-7” thump for dc metro

16.9/-6

Comparing gfs forecast for 18z today with current radar Seems faster? Sleet line a bit south

There’s that GL low. AI is “learning” about those

I think its a little bit of both. Models touched on the right idea over 10 days ago when they wanted to cut the storm west of us. Gfs had that, just too extreme with 80” snowfall in PA. That’s characteristic of ninas. But then they went way south with all that cold. We still have the cold, but models returned to their original idea.

It would have been a rainstorm if our temps were even in the climo range

Split the difference since you’re further north/NE. 5-9” perhaps

Sticking with the middle of the road forecast I made earlier, not panicking over the bad CAM runs. 4-8” mix/ice DC metro, 6-10” sleet fest with some zr NW

Yeah I thought a lot more zr, but no, just drier with precip max across PA. So far it’s an outlier

Nowcast precip shield more expansive than 3k nam forecast for 14-15z, with the ice line a tick further south than modeled. But just a little bit

Welcome to meteorology!

We’ve busted low recently because the temps had been too warm at the surface - is the main reason. But that’s not the case now.

8/-8 looks like euro/gfs are in agreement… and at odds with nam/rrfs

Idk, maybe something to do with gridding on its own data

Just fell under 20. Now 19.8

Its complex, but the simple answer is that the storm is phasing much farther west than ideal for an all snow event with no temp issues. It’s still cold though.

Not me. I didn’t really believe the suppressed scenario and kept saying it would come north. And it did… more than I thought.

22 now. This cold means business

Thoughts about freezing rain? Probably too soon, but some CAM soundings are showing a warm nose down to 900mb at the bottom DC and SE. i’m hoping that doesn’t creep north because of the risk of power outages, and difficulty of crews getting to fix them due to the preceding snow/sleet accums. As for as mby, I’m on the dark blue line or just underneath. When I’m on the line I like to mentally split the difference, as in 6-10” max 12”. Which was what I had in mind as far as my own forecast goes. EDIT: Saw your reply to Snowen, that answers my question.

29 now. Was 39 an hour ago

We’re close in location, euro gives us 8-10” before we flip

We shall see, but one thing is for sure - we have another threat to track, and we will be doing a lot of tracking.

I also think that cold air will not be much of an issue because of all the snow/ice cover we will have across the country east of the Mississippi

I have a feeling that we’re gonna go another week without much sleep