SnowDreamer

Very heavy rain and immediate flooding in the line passing through fairfax. Personal weather station showing 4.5”-5” per hour rates.

Tarmac caving now as well. My flight appears to still be leaving on time - good luck to you all tonight!

IAD has escalated to fuselage topper!

Moderate to Heavy snow at IAD now. Grassy areas beginning to cave but the tarmac is fine. So far cancellations are limited to flights to the blizzard zones.

Flakes mixing in now for Fairfax… back down to 37/35

Light rain, up 3 degrees since 9am in Fairfax 39/37

Methinks we’re gunna like the 12k NAM. The SLP gets pulled straight West nearly to the mouth of the Chesapeake between hours 30-33.

At hour 48 the mean MSLP is East of 18Z run, and looks to be almost exactly where the OP LP is. Backs up the OP

Talk about a nightmare forecast for Baltimore to New York City. 4-24”

Somebody who knows more about p-type outputs can expand/correct me, but there’s something funky about how pivotal and UKMET are interacting here. Here’s a sounding from 21Z in DC that looks a lot like snow to me, but the p-type map has it (and the next frame) as rain.

Ringing endorsement right here

Yeah, it’s a Norfolk special like the CMC. But at 12Z it was almost completely OTS. Progress

Ukie is worlds better than 12Z

This is my go-to, but it can often take up to a day to fully update after a storm. https://www.nohrsc.noaa.gov/interactive/html/map.html?var=snowfall_24_h&snap=1&bgvar=dem&shdvar=shading&o9=1&o13=1

For those of you that believe in the “wisdom of the crowd” for betting markets… People are putting money down on 7-9” for DC.