I’m going with 1-3” for Allentown but it’s basically a crapshoot with how volatile that warm nose is. This is the type of storm where the airport sees nothing but sleet which barely accumulates an inch, while 20 miles away in Bangor they get 4-5”.
Latest NAM has nearly 2” of pure sleet at ABE airport. I’d almost rather have rain…almost. Still better than the ice storm they’ll be getting south and west of Harrisburg.
And it did. Virtually no snow even for the Poconos. Amazing that we’re less than 24 hours out and there’s this much disagreement. This is the definition of a nowcast event.
0z HRRR has 6” in Allentown and 4” down to Philly. Not buying it though…I’ve seen this before where the HRRR severely underestimates mid-level warm air. The NAM is about to come out and I’m pretty confident it’ll show something entirely different.
If you buy how dry the NAMs are…I personally don’t. Sleet ratios are typically around 3:1 and I think we get at least an inch of pure sleet, along with up to an inch of snow.
Been awhile since we had a big sleet bomb…looks like that will be happening tomorrow night. Still doesn’t compare to V-Day 2007, the mother of all sleet storms.
It sucks running a page with 13k followers during a storm like this. You barely have a clue but the people demand numbers and you just have to do your best.
Forecasting this is like blindly throwing darts at the models and hoping one will be right. It's such a weird setup and the models apparently don't know how to handle it. You can't really look at past storms as analogs with this either because it's so rare to get storms like this.
I don’t really trust globals on the snow/mix line. We’ll have to wait another day or two for the hi-res models to come into range. What does look certain is that this will be an all or mostly frozen event for most of us.
WWA just issued for Lehigh/Northampton counties for this morning. NWS expects 1-2” around here.
GFS is really the only model showing a lot of snow for this area…most other guidance has a big mid-level warm nose and lots of IP/ZR. Trend has been our friend over the last day though, so we’ll see if that continues.
0z models are looking VERY interesting for Friday-Saturday. If that blocking trends just a little stronger some of us could be in for a pretty significant snow or ice storm.
Just woke up to about 5” on the ground in Allentown. Looks like we have one more band on its way to potentially push us closer to 6”. Great storm, love seeing something like this in mid December.
Finally coming down at a really good clip in Allentown. We’ve passed 2” which is more than was expected by now. Most models had the bulk of the snow falling after 1 am. Can we get to 5-6”?
Light-moderate snow here. Just shy of 2”. Hoping those heavier bands make their way towards me soon.
Edit: there is a 2.7” report half a mile from me. That seems at least 1/2” too high.