Hurricane Agnes

Just read in Mt. Holly's AFD and noting that SPC's SWDY2 has gotten a bit more bullish putting much of the CWA in the Slight Risk for severe -

I heard a number of vehicles had pretty much exploded and they were still trying to ascertain casualties. As an obs, I made it up to 39 today as a high and it's currently partly sunny and about 10 minutes from sunset, and 38 with dp 11.

SPC SWDY3 has the CWA in Marginal Risk but the southern portions in Slight Risk -

Bottomed out at 23 this morning with my lowest dp at 7. Am currently partly cloudy and 36 with dp 12.

Had a pile of flizzards, squalls, and quick snow showers - but mostly later in the afternoon. Looks like the lake effect machine has been turned off now. Currently 26 with dp back down into the single digits here at 5 and falling fairly rapidly.

RER tweet from Mt. Holly -

And another flizzard blob overhead. Temp down to 25 with dp 18. Also had a bunch of RERs today for coldest max for the date (Philly may have just missed it or tied it last I checked) -

And getting some more although the sun is out too... Temp 27 dp 15.

And another flizzard has appeared. Temp 28 dp 15.

EAS issued over me...

Getting another flizzard. Temp 29 with dp 11.

New Snow Squall Warning issued south of me across the western 'burbs and through west/central Philly and into Jersey - Sun back out here and temp back up to 31 with d 11.

Took all day but am finally getting a flizzard with blowing snow. Temp is 28 and dp 12.

Another Snow Squall Warning Eastern Montco/Bucks and into Jersey -

Have some returns over me down here but not seeing anything. Temp is 30 with dp 12.

Multiple Snow Squall Warnings issued for Berks, Central Montco & Bucks - (about to expire) -

That was pretty serious cold here and I bottomed out at 22 at 6:45 am this morning. The winds never went calm overnight so that was pure cold air and not even radiational cooling. The dp dropped down to as low as 2. I know the blooms on star magnolia not far from me are or will probably be mush (although it had been blooming for about a week already). It's currently partly cloudy with lots of cumulus and the temp has recovered to 29 with dp now up to 10.

Just posted by Mt. Holly -

Polar Vortex weakening. It has been very strong much of the winter and stayed put, which is not that common for such an extended period in general... but then the stratospheric warming began - https://www.severe-weather.eu/global-weather/strong-polar-vortex-warming-collapse-event-forecast-spring-2022-usa-europe-fa/ leading to this - https://www.severe-weather.eu/global-weather/polar-vortex-2022-dramatic-arctic-cold-season-return-united-states-canada-mk/

Mt. Holly had a climatology section in their AFD this morning that included the Monday March 28 record low max temps for the area -

Nothing here although I am under a radar hole with the sun peeping out from the cloud deck. Temp has been wavering today where I hit a high of 43 just before 11 am (after a low of 36 earlier this morning) but am down to 40 with dp 29. My sis in Upper Darby texted about seeing some flurries down her way.

Some thoughts from Mt. Holly this morning about the unsettled weather - Talk about a mixed bag! I know KYW reported a brief snow shower downtown earlier. I haven't seen anything here other than the light rain I had earlier this morning. Currently changeable skies and 49 with dp 33.

Here were some of the reports earlier in both Bucks and Montco of the graupel (including indicating it was enough to accumulate to at least a coating).

NBC10's Krystal Klei (on KYW) was noting that N/W of Philly there were reports of graupel so that may be what it was, particularly due to the warmer surface temps. Other than a passing light shower before noon that deposited 0.01", It's been mostly unsettled here today with the sun in and out and a high (so far) of 54, after a low of 45. Currently mostly cloudy, with the sun coming in and out, and 50 with dp down to 30 with I'm guessing what is some CAA drying things up. ETA - traffic guy (Andy Anderson) on KYW in shock reporting what he said appears to be snow in the traffic cams (and the anchor Ellen Kolodziej confirmed looking out her window downtown at 24th & Market - she just said it was like "snow in Southtown" from the Christmas cartoon).