Central PA Autumn 2026

[Mount Joy Snowman]

Low of 58 with .03” of rain. Should be a nice line passing through ahead of this cold front this evening. 

[canderson]

That line this afternoon might be pretty nasty. I can see someone around here getting some 50 to 60 mph winds.

[Voyager]

1 minute ago, canderson said:

That line this afternoon might be pretty nasty. I can see someone around here getting some 50 to 60 mph winds.

Yup. And the timing of it looks like it'll get to us right in time for my wife's commute home from work.

[canderson]

1 minute ago, Voyager said:

Yup. And the timing of it looks like it'll get to us right in time for my wife's commute home from work.

Yup, 3-6 pm or so timing. Seems all our squalls come through around the same time. 

[ChescoWx]

Enjoy today! Highs should reach the mid to upper 70's which is about 10 degrees above normal.
A strong cold front will cross the region tonight with a line of storms during the evening hours. Temperatures will fall from the upper 50's at midnight to lows in the upper 40's by morning.
Behind the front is some very chilly air for mid-October. Temperatures during the day tomorrow will struggle to escape the 40's across the ridges with low 50's in the valleys.
By Sunday morning we should see lows in the mid 30's with a freeze possible in the colder valleys! Temperatures will run well below normal through Monday before we return to near normal by Tuesday.
We look to stay dry through the new work week according to the ChescoWx model.
In weather history on this date in 2009 the county high only averaged 41 degrees...the coldest October 16th since records began in 1890!

[canderson]

Severe storm around state college looks healthy 

[Itstrainingtime]

27 minutes ago, canderson said:

Severe storm around state college looks healthy 

Now tagged TOR POSSIBLE for Williamsport area. 

[canderson]

21 minutes ago, Itstrainingtime said:

Now tagged TOR POSSIBLE for Williamsport area. 

Thankfully dropped but as that line moves east it’s exploding. LSV special incoming. 

[Jonesy56]

Thankfully dropped but as that line moves east it’s exploding. LSV special incoming. 

Surprised to see how much we cleared out in the last hour.. full sunshine ironically, wouldn’t know what’s brewing just off to our west at the moment.


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[canderson]

2 minutes ago, Jonesy56 said:

Surprised to see how much we cleared out in the last hour.. full sunshine ironically, wouldn’t know what’s brewing just off to our west at the moment.


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It’s 81 out so will drop 30 degree in about an hour. That’ll do it!

[Jonesy56]

It’s 81 out so will drop 30 degree in about an hour. That’ll do it!

Indeed. Out on my deck here in Linglestown, feels like summer. Temps in the 80s in Oct would normally set me off but knowing relief is a few hours away makes it tolerable.. i love strong frontal passages but hoping for minimal damage reports around the region.


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[mahantango#1]

Got .30 from the squall line. Temp went from 75 to 67 in a few min.

[canderson]

Front is arriving, winds just kicked in 

[Yardstickgozinya]

Tail end charlie

[canderson]

There was limited CAPE but I thought the line would pop. The forward speed increase might’ve had it outrun instability for the capital region. 

[Yardstickgozinya]

All bark, and absolutely no bite down here as I expected. Only a couple raindrops. There might still be some rain coming in on the backside here. 

[canderson]

Bottom half is popping E of the river. Heads up Lancaster folks

[Yardstickgozinya]

16 minutes ago, Yardstickgozinya said:

All bark, and absolutely no bite down here as I expected. Only a couple raindrops. There might still be some rain coming in on the backside here. 

You are correct in that cape is limited, but the storm hasn't outrain anything, in fact, it's moved into a better environment as far as cape and lapse rates go. The inversions in both the mid and upper levels, is the most likely convective inhibiting mechanism. Thunder and lightning  just started rocking out of this thing as it moves out into the distance.

[canderson]

42 mph was my highest gust with the frontal passage 

[Itstrainingtime]

Winds came howling out of nowhere. Here we go. Goodbye, summer! Take your time coming back.

[Yardstickgozinya]

The storm's about to move out of the best areas of support. These are the lapse rates that it moved into

[AccuChris]

Picked up a quick 0.35” in Lebanon


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[Yardstickgozinya]

Southern part of the the line is  tapping into some of those better thermodynamic values down there. 

[Itstrainingtime]

Just .09" fell here. Temp down to 65 which is much closer to what it should be. High today was 83.

[Yardstickgozinya]

The southern part of the storm in pennsylvania is still lagging behind in the better environment. Convective maintenance will be a struggle not too long after crossing the river. Not only will storms have to deal with inhibition, it's also going have to deal with a setting sun. 

[Superstorm]

0.25” of rain this afternoon


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[pawatch]

46 degrees this morning. 
.84” for rain yesterday, but really need to check my manual gauge once it gets light.

[mahantango#1]

 

URGENT - WEATHER MESSAGE National Weather Service State College PA 107 AM EDT Sat Oct 17 2026 PAZ004-006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-172000- /O.UPG.KCTP.FZ.A.0007.261018T0500Z-261018T1300Z/ /O.NEW.KCTP.FZ.W.0011.261018T0500Z-261018T1300Z/ Warren-Potter-Elk-Cameron-Northern Clinton-Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata- Somerset-Bedford-Fulton-Franklin-Tioga-Northern Lycoming-Sullivan- Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland- Adams-York-Lancaster- Including the cities of Wellsboro, Clearfield, Huntingdon, Lock Haven, Bedford, DuBois, Mifflintown, Mansfield, Somerset, McConnellsburg, Lewisburg, Bloomsburg, Mount Union, Renovo, Sunbury, Laporte, York, Ridgway, Gettysburg, Harrisburg, St. Marys, Berwick, Chambersburg, Philipsburg, Coudersport, Altoona, Hershey, Lancaster, Johnstown, Lewistown, Williamsport, Lebanon, Pottsville, Trout Run, Carlisle, Newport, State College, Shamokin, Danville, Emporium, Warren, and Selinsgrove 107 AM EDT Sat Oct 17 2026 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures between 25 and 30 expected. * WHERE...Most of central Pennsylvania. * WHEN...From 1 AM to 9 AM EDT Sunday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Valley locations and sheltered rural areas will experience the coldest temperatures. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants and vegetation from the cold. && $$ Steinbugl

[Mount Joy Snowman]

Current temp of 50 is the low. Only .12” of rain as the storm line was pretty underwhelming here. Down near freezing the next couple nights, time to bring the palm in for the year. Onward.