Yardstickgozinya

Radiant flakes are the only flake classification I've seen in storms this year. I've actually brought that up in a few of my post.

In my mind, I would think that the ice sleet ,snow, rain, fog ,cloud cover would, all affect electromagnetic pulse detection,but according to Ai it doesn't, I personally don't have much faith in the answers that Ai gives yet

Although rare, winter storm strokes are generally much more powerful and destructive than summer strokes..

I'm outside and saw the flash

Topography .

As someone who watches the lightning detection systems religiously. In c p a take the lightning count and multiply it by three, and that'll be closer to the the amount of strokes that are actually occurring.

All snow right now at a moderate rate, big old fat radiant flakes again here.

I looked out on top of my pool just before the snow ,sleet mix started and there was the tiny bit of graupel on the ice that had fallen around 11:00pm last night. So between 11 and start time this morning, it looks like there was nothing. The tiny graupel shower I got here was so brief I would imagine, it had to be localized and it basically amounted to absolutely nothing here. .

Light mix of snow and sleet here for about the last ten minutes.

There's definitely no hype to some of these wind events this fall and early meteorological winter. As I said before I find in my general area that these events usually can't get there advertised winds to the ground and that hasn't been the case over the last few months. I've also had several extra truckloads of tree debris from all my clients this year from Union Deposit to Dillsburg. This morning is possibly one of the most gnarly wind event I can remember at my home since the historic low dew point derecho of 1989. Below is some information on the 1989 low dewpoint Derecho. One of the most interesting and rare weather event most of us got to experience in our lifetimes. https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://repository.library.noaa.gov/view/noaa/6824/noaa_6824_DS1.pdf&ved=2ahUKEwiai_iXisuRAxVzFlkFHbeBElcQFnoECFoQAQ&usg=AOvVaw2L8H8kDzIM5k9RkZFJmF4U

Ohh, snap, that's looking pretty gnarly again

I definitely worded the beginning of my post incorrectly. The point that I was trying to make, is it'll be interesting to see if trainingtimes hrrr verifies, based on what's happened in western pennsylvania and the ohio valley.

0.5 scan out of pittsburgh was definitely showing some bite at the ground from that band.

That said the lightning detection systems are plenty adequate enough to know that there's very little if any lightning occurring.

Very little lightning downstream over the last twenty four hours. However, just because lightning is not detected does not mean it's not occurring. Parts of pennsylvania and the ohio valley do not have the best lightning detection systems.

Trainingtimes Hrrr graphic has been fairly accurate in its depiction of a extremely narrow line of thunderstorms moving through Western Pennsylvania and the Ohio valley overnight. However, it has produced at no detectable lightning throughout the last several hours of its life cycle tonight. Furthermore the band has weakened as advertised. It'll be interesting to see if the Hrrr can continue it's accurate depiction of reinitiation of a narrow band as it moves through cpa. If it can get going again, it definitely looked like that kind of sharp narrow band that could have some gnarly winds this time of year.

SPC AC 190529 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1129 PM CST Thu Dec 18 2025 Valid 191200Z - 201200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MID ATLANTIC... ...SUMMARY... Isolated damaging winds may accompany convection over the Mid Atlantic today. ...Mid Atlantic... Late-evening water-vapor imagery depicts a notable midlevel trough over the MS Valley, shifting east in line with latest model guidance. This feature is forecast to take a more negative-tilt orientation by late morning as 100+kt 500mb speed max develops/translates across the Mid Atlantic by 18z. Impressive 12hr height falls at 500mb will overspread the OH Valley into New England where values will range from 240-300m in response to this strong feature. Needless to say, very strong wind fields will provide background support for organized frontal convection. HREF guidance is in general agreement that a narrow strongly forced line of convection will develop along the surging cold front early in the period. Forecast soundings do not exhibit more than weak SBCAPE with this frontal convection, but some mixing is expected given that 0-3km lapse rates should be on the order of 7 C/km. 40kt mean wind within this layer is expected to contribute to gusty winds with this activity. Have introduced MRGL Risk of damaging winds to account for strong gusts with a narrow line of convection that will surge east along the front. Given the limited buoyancy across southern New England will not introduce wind probabilities at this time. ..Darrow/Squitieri.. 12/19/2025 CLICK TO GET WUUS01 PTSDY1 PRODUCT NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z CURRENT UTC TIME: 0944Z (4:44AM), RELOAD THIS PAGE TO UPDATE THE TIME

Calm cold crunchy, I'll see you at the top.

as I said earlier roads are pretty bad.Probably best for people to stay home. Things aren't a whole lot better yet. Probably no reason to go out and make things harder for first responders.

Old boy don't got many left.

I'm sure harrisburg's fine because it never snows in the city.