Hurricane Agnes

Remember that the Mt. Holly CWA isn't just a tiny area. It goes from the LV south into southern DE and parts of northern MD and from the Central and S. Jersey coast west through Chester County and above. There have been some forecasts for the SE ridge to briefly reappear sending temps into the 50s by next Thursday - particularly in some southern parts of the CWA where there is quite a bit of snow along the coastal areas. And as a note, I did a SWE for MBY late this afternoon and got around 8/9:1 - and probably because during much of the event, the temps were holding around 29/30 during the heaviest snowfall. You will have clogged drains for sure leading to street flooding if you get any kind of significant melt and rain on top of that. The latest PNS includes this (with many counties in the CWA having some serious snowpack) -

Finally got chance to do my SWE. First I did what fell in the Stratus outer tube (since it was already there... and I had a dickens getting it out of the mount and had to take a mallet to it to tap it up and out since it had frozen in place). That melted to 0.54" and with the 4.75" of snow from today, that gave me 9:1 (rounded up from 8.8). I then did a core sample of what I kept on the board (had cleared a part for the final snow remnants but left some for a core and did some ruler measurements for what remained at what would be that core spot). That melted to 0.57", and with the 4.75", gave me 8:1 (rounded down from 8.33). As a note that is notable is that from yesterday morning when the snow began here (~8 am), through much of the overnight, the temp was 30/29 with the dps similar, and that gradually dropped to the 23 temp reported at 5 am this morning. So that earlier snow here that began yesterday and accumulated overnight, apparently had more moisture in it than the early morning stuff today. As an obs, I did make it back up to 20 once the sun came out this afternoon and am now back down to 17, where the dp did a total crash to -2. Will call the final total (PRE + main event) 5.25".

Still getting some light snow but the winds have picked up considerably and the sun is actually peeping through the cloud deck. Got an additional 0.75" for this next check for 4.75" today. And with the 0.50" yesterday, would be 5.25" for the 2 days at post time. Temp has crept up to 17 now with dp 12 and it's breezy with blowing and drifting SN- snow.

I edited with a new screenshot that suddenly received all the snow reports. There are some reporting 12" - 14" and others in the 5" - 6" range but those differences could be due to the timing of measurement and reporting.

I expect you wish you were under the band that Boston has been under for awhile now! (EDIT finally got some snow reports on in the program so adding that screenshot)

Back edge is getting close but am still getting SN to SN- with some blowing and drifting. Temp has held at 16 with dp now down to 13. Mt. Holly confirmed blizzard conditions at the shore -

I had posted this hilarious one credited to him -

Mt. Holly re-tweeted the Philly Office of Emergency Management's spotter report (location is in Northern Liberties which is right by the Delaware River) - Definite sharp cutoff between there and where I am on the opposite side of the city!

Here is something cool - you can see the snow cover on the ground in central PA from the satellite where the sky is clear view (area marked).

Did a 10:00 am measurement and got 4.0" (that will be added to the 0.5" from yesterday's PRE that disappeared before this came in). Temp has still been falling and is now down to 16 with dp 14. Still have very fine flaked SN with blowing but the intensity is up a notch.

I'm probably going to try to do a SWE later where I am as I expect the ratio might be higher here since I am further away from that big ocean than you are. Temp keeps on falling here and I'm now down to 17 with dp 15. The "high" was 29 at midnight.

Looks just as powdery there too since it appears to have blown right off the boat and there isn't much on the car!

WPC current surface map issued 8:29 ET. (that other damn low )

Temp still dropping and now down to 18 with dp 16. Still SN but with more blowing around off the roofs.

And that is getting sucked up into that nor'easter up this way.

Temp still dropping and am down to 19 with dp 17. And some kind of low rolled off the Carolinas. (sorry don't mind my silliness this morning... am operating on fumes)

As it continues to move NE eventually that main band is going to start to pivot and come east. The far edge of it has literally been way back across Lancaster for the past 12 hours (regardless of how little might actually be making it to the ground out there), although I noticed it is now moving away to the east from there and is getting closer to the border of far western Chester County.

Looks like it's trying to get its act together and take it on the road.

Temp continues to drop as the arctic air pours in and am now down to 20 with dp 18 and SN that is some really fine stuff. Getting more wind now so it is starting to blow around.

A Co-op reported 6.5" in Burlington County.

I think it is still there and strung out with what might be showing up as the "dominant" one being west. Might be that irregular blob of convection on the below. (edit - I annotated it as a WAG) - And I just edited my earlier post - meant WAY EAST (am still sucking down coffee this morning )

Yeah I was thinking the pushing thing would be a bear although at least it wouldn't have a chute that gets clogged. WPC did a surface map about 2 1/2 hours ago and that thing is way west MEANT EAST - sortof where GFS had said it would be awhile ago.

That Wovel looks pretty cool. Probably does great on the powdery stuff when there is too much to sweep away with a broom... although I'm not sure how well it would do with the wet heavy cement type snow. But then snowblowers don't work that well with the cement snow either. Looks like the heavier band moved just off the coast.

Went out to hand-measure and that is some snow-cone powdery snow. Measured 3.25" so far (total of whatever may have been left from the PRE through to now. Although there is some light breeze, there hasn't been enough where the board is, to start blowing and drifting yet. I expect as the storm gets closer, the winds will increase.

Mt. Holly 5am update tweet - Still have SN (with some fog) and tep 22 with dp 21.