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Central PA Winter 2024/2025


Voyager
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57 minutes ago, AccuChris said:

18z GFS still on the snow train this weekendcd51e97b7c52fe7ac0fc33fcb1a7f375.jpg
 

Thank God no other model shows anything like that and CTP is partly to mostly sunny the entire weekend.

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Below is the February 2025 Climate Summary for Chester County PA. February being the 3rd consecutive winter month this season to feature below normal temperatures. This was the first time this has happened since the winter of 2013-14. With an average winter (December through February) temperature of 31.6 degrees this was the 60th coldest winter with records back 132 years to the winter of 1894-95. It was also our coldest winter in 10 years since the winter of 2014-15.image.thumb.png.287e73ed75fe27539064522c0f08c4db.png

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SPC AC 040614

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1214 AM CST Tue Mar 04 2025

   Valid 051200Z - 061200Z

   ...Allegheny Plateau/Mid Atlantic...
   Early period convective precipitation may contribute to
   boundary-layer moistening, prior to the onset of increasing
   insolation beneath a dry slot overspreading the region during the
   day.  Followed by the onset of stronger cooling aloft, model
   forecast soundings indicate the development of thermodynamic
   profiles characterized by modest conditional and convective
   instability, in the presence of strong deep-layer shear.  Guidance
   has been varied concerning the location and extent of scattered
   pre-frontal thunderstorm development within this regime, but the
   environment is likely to become at least marginally conducive to
   scattered organized convection, including supercells@Itstrainingtime.

   ..Kerr.. 03/04/2025
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Make note that this mornings forecast discussion must have been completed before the spc expanded the sligh risk north. I also trimmed down both the Spc and Noaa forcast to only include localized convective and precipitation details to reduce clutter.

A deep surface low is progged to track west of PA into the GrtLks by late Tuesday night and Wednesday. Ahead of this system,a 50-60kt southerly low level jet and associated plume of Gulf moisture is progged to sweep across PA. A ribbon of +3-4SD pwats, combined with strong upper level diffluence ahead of the upper trough, should support a band of moderate to heavy rain the first half of Wednesday, followed by a round of PM convection along the trailing cold/occluded front. Elevated instability and strong large scale forcing in the model guidance supports a chance of tsra across the entire area Wed PM. While the focus for possible severe weather is over the southern tier of the state, a MRGL outlook covers much of central PA with a sliver of SLGT extending into far southern Lancaster and York Counties where proximity to the warm sector and where more appreciable instability is possible along and south of potential triple point low track. EPS plumes still suggestive of rainfall totals by late Wed in the 0.75 and 1 inch range over the bulk of Central PA, with orographic enhancement leading to totals close to 1.5 inches over the higher ridgetops of Sullivan/Schuylkill Counties. This amount of rain by itself should not cause flooding issues based on latest flash flood/headwater guidance from the RFC. However, will have to watch for possible localized ice jam issues over the N Mtn, and contribution for SWE locked up in the ice/snow pack over the North Central Mountains, which NOHRSC shows is locally 1-2"+ and sfc dewpoints in the upper 40s would promote appreciable melting.

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Some rare above normal temperatures over the next couple days before we trend back to normal to below normal temperatures through the rest of the work week and through the upcoming weekend. We are running under 60% of normal rainfall so far this year so the showers tomorrow will be welcome for the many area farmers and their future lawns later this month. We should see between 0.50" to 0.75" of rain.

image.png.3f0226ccd7c831cf3b21c4132657be40.pngimage.thumb.png.d2d9e5186102a889fa92e5ff25ee0383.png

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4 hours ago, pawatch said:

32 degrees this morning. wind and rain tomorrow, it sure doesn’t sound like to pleasant of an experience.

Tomorrow is my first solo day with the new company. As I've mentioned in the past, it always rains or snows when I start a new job.

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17 hours ago, Voyager said:

Thank God no other model shows anything like that and CTP is partly to mostly sunny the entire weekend.

Yep models are not even close 80% of the time model shows snow no other model shows. Then Forcast is 56 and sunny lol

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Contrary to popular belief, I am not a bot, not compromised. Posting on mobile limits upload size. But I am proudly wearing my newly purchased shirt, previously discussed.

 https://www.heavyslime.com/

its the black shirt with the big bird 
 

In other news, my work travels took me from New Cumberland to Carlise to Shippensburg, back to Carlise and ended the day in Mechanicsburg, near CV High School. Sun broke out around 11:30 when I was leaving Ship. Winds picked up when I got back to Carlisle, but that sun is warm. Hit 62 at 2:49 just off of the Carlisle Pike in the Cumberland Estates neighborhood. Beautiful day for outside work. Put some grass seed down tonight, ahead of the rain tomorrow. Dogs did a number on the lawn this winter. 

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Highlight of my day was the 30 minute drive down 174 to Ship. All the farmers were out, taking advantage of next weeks warm temps and the rain tomorrow. The spring time, Central PA smell was in the air, and it was wonderful 

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