RGEM is a pummeling, it's 1.4 QPF by 18z for DC with 0.7 falling in the 3 hour period 15z-18z. If we can get that kinda death band right before the change we could def get double digits in the metros.
Most of our mixing events over the years are snow to sleet to rain to 40+ degrees. This is a pretty cool and unique event with a very anomalous arctic airmass. The fact that plain rain isn’t even in the discussion is cool. Even if we “only” get 4-5 inches in dc and then ice and then arctic cold it’s still going to be awesome. True deep winter stuff coming.
I think now we can basically lock in mixing at least up to the M/D line and now we just hope the mesos hammer us with the thump. Hopefully the RGEM over the NAM is correct.
NAM is only 0.4 qpf for dc pre flip, ive learned that when the NAM shows a mixing related disaster scenario, take it seriously. Not saying its gonna happen, hopefully its still figuring out the Synoptics, but don’t write it off.
For dc Euro looks like about 0.8 qpf as snow, and then 0.6 qpf as sleet. 6-10 of snow and a thick layer of sleet, that’ll be a high impact event if it verifies.
Yeah who knows, I mean realistically with these complicated wave interactions you can get shifts up until 48 and even beyond but it just feels like they don’t shift back south very much.
In a mixing event for our area the best thing to do is just take the guidance with the fastest flip. It usually ends up being right. GFS is smoking the good stuff.
SE of 95 4-8
DC 6-10
NW 8-14
Seems like a pretty easy call and if DC gets 4 inches of snow and a bunch of sleet that'll seem like 6-10 anyway based on impact.
Normally with our phasing storms its reasonably clear how the ridge axis, timing of phasing, heights out in front, will affect the outcome but with this one it's been really hard to guess.