Hurricane Agnes

Picking a time frame for the 6z GFS & NAM and 0z EC, the NAM and EC are warmer and GFS continues with the ice threat. Euro has a double-low solution -

18z GFS vs 18z Euro (from the Euro's last panel) -

The NAM and GFS 18zs (GFS is still running too). NAM has a little more antecedent rain and appears a tick faster compared to the 12z. Edit to add in the Canadian... running slower than the American models.

And the state ran out of consumer (and road) salt! I had to go on a work trip to Baltimore in January '94 during one of what became ~17 ice storms that season, and planned to take Amtrak but drive to the station and park in their garage, so eased on down to 30th St. Station and thankfully decided against getting on I-76 otherwise I would have been trapped there for 8 hours, because the ramps iced up and cars/trucks were stuck and blocked it so no on could get on or off. When I got down to Baltimore, they only had rain and plenty of salt, so I brought back 2 bags of halite in my luggage. 1994 (January 19) was also the last time KPHL recorded a below 0 temp (-5)

Looks like a pear with a big bite out of it!

The beginning of it is showing up on the last panel of the 12z NAM.

Looks like an overrunning ZR/sleet fest with some snow on top.

Nye County, NV.

From the same site, there are also areas to your south and west in similar circumstances in terms of "dryness" but none of the areas here in the east are at the "drought" level yet like some spots in VA or in the MW (especially northern WI and MN). I won't even talk about the southwest and west. As an obs, am now up to 27 with dp finally in the double digits at 12.

Dropped down to 14 this morning as a low and am currently at 22 with dp bopping between 8/9. There was a colorful yellow/orange/reddish sunrise this morning and a deck of cirrus has since been moving in.

I'm hoping others here realize that yours is reflecting a typical "urban" setup for those who even have a patio, terrace, or small back or front yard to take a reading from. Many of the older city row homes (e.g., the huge housing stock of such built in the '20s - '30s through the '50s) have a shared driveway out back with a cement entrance strip to a garage and possibly a strip of grass along the side of that. I.e., something along the lines of this - Those without a garage usually have some sort of small patio out back. Other housing stock of "twins" (semi-deattached) homes may have a larger back/front yard but not by much. Many of the older rim towns have similar housing setups that were built before the advent of the sprawling rancher/split-level/Cape Cod-style housing developments and these older, more densely-built homes may be adjacent to those developments. Unfortunately, much of the criteria strives for "perfect conditions" and that can miss "the reality" of urban/older town dwellers by being biased towards suburban developments and rural areas (whether it is for temperature readings or snow measurements).

Philly's #42!

Made it up to 24 as a high today (low did end up being 10) and was out clearing off the car under a blue sky, noticing that about 1/4 of the snowpack had disappeared (from blowing and insolation/sublimation) - and that was while the temps had mostly been in the low-20s most of the day. Currently 22 with a dp that finally got above 0 and is at 9.

I agree that Mt. Holly did an excellent job trying to deal with what I have continually referenced as the "dancing lows" and the east/west model mayhem that ensued because of that. I live in Chestnut Hill and I saw that report, which was higher than what I measured, although it was done via a "Public" report (not mine) and not by a Co-Op/trained spotter. The neighborhood itself has residences of many types, from small 2-story row homes to large mansions and estates that have horse stables, and all are scattered at many different elevations, including those at the highest points of the city, and that can impact the observations (I expect dependent on whether they are on the windward or lee sides of the hills). I know what is usually joked about with respect to measurements that involve simply sticking a yardstick or ruler through the snowpack to the grass then submitting that (this is what most who are perhaps more than casually following the weather, but who are not quite at the higher "hobby" level of interest, will do)... I know what all is involved with really trying to "do it right" and also know that I have so many hobbies that trying to dedicate to actually doing it on a regular/consistent basis to be part of the "official record", is a pretty significant investment in time. And that includes the need to really live in a place that could meet the criteria for measurements (which many of us in the city do not have the luxury of being in because our properties are not "suburban" with 1/3rd or 1/2 or more acres where snowboards can be placed in an unobstructed location - for example, at least twice the distance away as the height of the house and other "obstacles", etc.). Most who live in urban locations have no backyard at all and may just have a roof terrace or have postage stamp sized backyards or patios or courtyards, myself included. And you saw a pic from the guy in South Philly (I presume taken from his window) looking out on what was probably a 1-way, 1 lane South Philly street with parking on one side, and a typical row of 3-story older "townhouse" style/front-stoop houses that might only have a small yard or paved courtyard out back. But it's a good experience to get the IMBY readings - and in my case as an avid gardener (particularly container plants including tropicals, subtropicals, and tender perennials) - the weather is a critical factor in the success of those plants surviving and thriving.

Am now up to 12 but dp is still below 0. Have to change out the humidifier filters because they got worn out the past couple weeks (even with flipping and periodically re-soaking). The forced air heat does a number on the humidity in here.

Temp here slowly dropped to 10 after midnight and has stayed steady through the early morning. Currently, about 10 minutes after sunrise, it is 10 with dp still below 0 at -1.

Mt. Holly's approx snowfall reported map - Also saw that KPHL had a daily snowfall record for 1/29 broken -

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!