Hurricane Agnes

All kinds of stuff could happen with those squall lines. It will probably depend on how much heating is able to occur before the front arrives. More often than not, I have seen the cool air "bleed in" and stabilize the atmosphere around these parts (MBY at the higher elevations) but when it jumps over the river, all hell can break loose with the down slope.

Interestingly enough, we see this sort of thing more in the spring than the fall but it's basically the same sort of dynamics (although for somewhat opposite reasons for those 2 seasons). I.e., spring has cold ground and warm air influxes and fall has warm ground and cold air influxes. Mother nature dictates that the temp/pressure must come into equilibrium somehow. I did see there was a tornado threat in the TN area. Currently overcast here and 38 with dp continuing to rise and at 32.

He mistakenly mixed you up with Dennis Nedry - But then all the Wayne Knights look alike so....

Wind Advisory lofted for Philly metro, as well as well north/south and east- Have so far had my low of 32 happen some time after 1 am and have been on the upswing since. Currently 36 with dp on the rise and currently at 30.

Am a bit surprised but probably shouldn't be, that it stayed a bit colder here today than I expected. The low was 29 and high was 39 but we are closing in on the shortest days of the year... Even with the low dews through the day, am expecting the WAA to start coming soon though. Currently 36 with a dry dp 25. Did have a red sunset, so I guess that means something (maybe RedSky smiling at the brief but unexpected white stuff).

I thought the above was your "final word" but apparently not. Philadelphia is the 2nd largest city by population on the east coast. Full stop. Enough of the bullshit.

Mt. Holly did a little ditty on December snow here - Coin flips (or probably something to do with ENSO states).

You may have to host it somewhere and link to it or find a way to shrink/compress the size (maybe get it down to a lower resolution or edit it to run for a shorter amount of time). I know the different subscriptions here offer different file sizes permitted for each upload.

You guys made me get up and check and there be white pancakes coming from the sky! Temp at 37 but dp is up to 30 so the atmosphere has moistened enough to kill the virga.

Looks like upper Bucks got under something. Grabbed a snapshot of a heavier band not far from you... RedSky should be under some good stuff. It's too warm here (am at 37, although the dp is now up to 29).

That's not how they do "normal" temperatures. The climatology to determine what is "normal" is done over a period of many years. They may report out an "average" temp for the day as a somewhat meaningless stat, but they generally average the daily highs for each season over some period of years, and then do the same for the lows, and with that in hand, can come up with what might be considered typical ("normal" ). Similarly, USDA had been calculating their hardiness zones by averaging the lowest min winter temperature for each year over a period of from 15 - 30 years for different regions of the country and will then assign hardiness zones based on that to give gardeners some idea for what types of plants (trees, shrubs, etc) can be grown in different areas and have a good chance to survive the lowest temps (the zones designated on a 10 degree scale).

Just a couple weeks too soon.

So you did see something crystalline fall from the sky that wasn't something like ashes flittering your way from someone's fireplace. Meanwhile the sun has busted out here through an eroding deck of high clouds. Temp is up to 39 and dp is 25.

It's a shame that I didn't think to pull up my GR2Analyst (on a different laptop) to get a finer resolution from the Level 2 data to see if I could capture that time frame. Definitely won't rule out a mass exodus of starlings or those damn Canada geese (although if it were them they might have ended up on this side of the river)!

I've seen radar captures of sudden bird (or even insect) migrations. But this seemed to also cover a broader area in addition to what was centralized near Mt. Holly. Was looking again at the radar and a map again and it's possible there was something going on at Joint Base McGuire–Dix–Lakehurst (looks like that is probably what is closest to where that blew up).

I remember years ago before coming to this site, when there might have been a signal like that because we ended up with a sleet storm on Christmas Eve and I remember driving my mom to church services for the evening mass.

Looks like it all but evaporated here although there appears to be a virga band over RedSky. Temp was holding at 35 but just edged up to 36 with dp 26. Checked the MA forum and aside from the there doesn't seem like much more than virga going on down there either.

One of my sisters who lives in Upper Darby texted that she is getting some stray flakes down her way. Still not seeing anything here. Dp is definitely creeping up though and am up to 26.

The leading edge has been over me and am not seeing anything but virga too. It feels like "snow" out there though but temp is now up to 35 here, with dp still sticking to 24/25.

Had been reading about that last year. You will surely live vicariously through your son. Will be interesting to see how the rain/wind sensors perform and verify over the long haul. Something you might want to also get is a Stratus (manual) rain gauge for the heck of it to see how close the Tempest's values are with it.

LOL that is an interesting thought, although I would think something like that would show up as small blobs of green on the radar. These looked almost like those scattered pop-up thunderstorm cells that we see in summer.

I just peeped out and am not seeing anything yet, although that band to the west is not over this area either (it would probably need that lobe from the high to move further east). In any event, it's currently overcast and 34 with dp still lowish at 24.

Who is "you"? I don't come here to get into silly arguments with people about what the models are claiming. I mostly read, post obs and will add some interesting supporting info about what the weather is doing. I recently retired (almost 5 years ago) and fortunately now have more time to read through the posts here while working on my weather station (and data that I am gathering while configuring/tweaking the weewx app to have a local webpage displaying that data). I actually follow tropical systems and on occasion have posted in that subforum during some of the biggies, although recently have been tracking remnants of systems that come through this area. I think you might be mistaking the "quiet" posting without the knock-down drag out trolling, for "lack of interest". If you believe that a raucous discussion is the only type that is "acceptable" then that is your opinion but I find it distracting when trying to absorb new info on how to approach forecasting. I'm just not getting what the problem is. I know there were issues way in the past that apparently had to do with some moderators, and that caused a bunch of folks to go off and create a new site, but that has nothing to do with the people who continue to post and contribute here. In any field, there will always be "differences of opinion" and I think the lay public would be shocked that this even happens in the science fields but it most certainly does (I was a chemist so I know arguments ensue about what certain data actually "means"). Oddly enough, the way the climatology is in this area based on how the jet stream ebbs and flows, we are often right under a flow that puts this area in marginal weather territory, with occasional spikes of extremes. But it makes it inherently "different" and unique from other areas - particularly with the topography (e.g., the Piedmont vs the coastal plain), but then that also tends towards us having more "boring" weather. There was a reason many centuries ago people settled in this area and that was because of a more stable, truly "temperate" weather pattern - particularly good for agriculture. I don't have a problem with people from other subforums "popping in" - in fact during big events, they often do. And I really haven't seen any rancor when they do come in and interact/contribute as events unfold. As I posted elsewhere, if Randy and crew feel they want to further revise this site and consolidate the subforums, they are obviously going to do it regardless of what we think in some "poll", and will have their own reasons. But to continue to come here and stir a pot is just non-productive.

I someone in Jersey getting a sudden flizzard? ETA - was looking on a map and that is appearing in an area near Mt. Holly. Could be Mike fired up the snow-making machine.

Yup. I am on a Nextdoor list and people were posting that helicopters have been flying over the area overnight. That band seems to have hit a wall. WPC's current surface map sortof shows why!