WxUSAF

With this set up, going to be much more of a classic tendency for a N shift in the last 48 hours. Doesn’t mean it will be huge, but that’s the way I’d hedge for now. Factors playing into that will be the strength of our shortwave and its position relative to northern stream waves that are suppressing the flow enough to push it south of our latitude. If you were on @psuhoffmans first zoom chat, recall he was saying that a 500mb track along the VA/NC border was classic for DC. 6z GFS takes the shortwave on a Roanoke—Richmond—OCMD route. The slight northward component to that route indicates it’s negatively tilted at our latitude, which will help bring Atlantic moisture onshore.

Low of 16. It’s ticked just below that, but not enough to round down. Maybe can get a bit more drop before dawn.

HoCo schools closed. When I was a kid, a snowstorm that extended winter break was my dream. Now it’s my nightmare.

DCA updated to 6.9”. Highest of the 3 airports now.

1/3: 6.3”

https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=PNSLWX&e=202201031842

Quick review of the new LWX spotter report list suggests all the WSWs verified except southern Harford county in MD.

Now the question is how low can we get the temps tonight. Hrrr, GFS, and euro suggest widespread teens for snow covered places. GFS even single digits for VA and southern MD. NAM is much warmer for some reason.

There was plenty of reason to be cautious with the strong gradient and to be skeptical of the loltastic 10-18” Kuchera amounts. But widespread warning criteria snow was not a surprise.

Also 3.9” at IAD

It will all be forgotten next time yet again

Hey, nailed it along the PA line

6.3” will be the final number. Some pics

6.3” now. Been rocking 1”+/hr rates for 4 hours now. 28F. Very satisfied. Let’s do it all again Friday

Biggest flakes yet as the back edge approaches.

5.2" now in Columbia. 1.1" last hour, so 3 hours now with 1"+/hr rates. Wind really picking up and snowing heavily. Temp down to 29F. WSW verified!

4.1” at first snowboard wipe. Over 1”/hr for the last 2 hours.

I know it’s not that cold, but damn is it nice to have FALLING temperatures during a storm instead of anxiously watching temps tick up to freezing or above.

WBAL forecast in serious jeopardy

2.9”. 1.3” in last hour and a ten minutes.

Snow is borderline heavy. Probably 1”/hr or better

All 3 metro airports on the board as of 7am! BWI 1.0” IAD 0.9” DCA 0.2”

Probably the edge will move north and fill in for a few hours this morning. Hopefully enough to get everyone on the board.