An upper-level trough moving across the Great Lakes brought ample lift to portions of northern Pennsylvania that lead to thunderstorm development during the afternoon and evening hours of June 25, 2026. A narrow corridor of sufficient instability (1000 J/kg) and bulk shear (30 knots) allowed for marginally severe thunderstorms to form across western Pennsylvania.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CTP wrote it up.
An upper-level trough moving across the Great Lakes brought ample lift to portions of northern Pennsylvania that lead to thunderstorm development during the afternoon and evening hours of June 25, 2026. A narrow corridor of sufficient instability (1000 J/kg) and bulk shear (30 knots) allowed for marginally severe thunderstorms to form across western Pennsylvania. As these storms developed, upscale growth continued into portions of Clearfield and Centre counties, where a severe thunderstorm brought multiple instances of tree damage south of Clearfield. This appears to have occurred when the thunderstorm's core dropped towards the surface as radar analysis outlined that the storm rapidly weakened further east throughout the evening hours.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before the first event at Jun 25, 2:16 PM EST, 1 hour 50 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service State College PA 316 PM EDT Thu Jun 25 2026 .WHAT HAS CHANGED... Little changes for this update. && .KEY MESSAGES... 1) Rain returns to the forecast late today into tonight with showers and scattered thunderstorms, concentrated across the NW half of PA. Steady, light to moderate rain Friday night into Saturday. Lingering risk for a pop up shower in the Laurels Sunday. 2) Increasing heat risk builds through the middle and latter part of next week. && .DISCUSSION... KEY MESSAGE 1: Rain returns to the forecast late today into tonight with showers and scattered thunderstorms, concentrated across the NW half of PA. Steady, light to moderate rain Friday night into Saturday. Lingering risk for a pop up shower in the Laurels Sunday. Upper level energy and a weak sfc cold front headed our way from the Ohio Valley and strong diffluent flow moving over the increasingly moist and unstable llvl environment will lead to an expanding area of showers/TSRA over Ohio and NW PA. Earlier clouds, showers and lower sfc Tds in the 50s minimized SFC- based CAPE across our region so far, but a strong uptick in convection is expected over the next 1-3 hours across areas just upstream from our CWA. This convection will move east into our Western zones mainly after 22Z where SPC's upgraded SLGT risk for SVR TSRA just nips that part of our CWA. Rain chances will increase late this evening across the SE half of the state, but ML CAPE will be steadily diminishing there with SFC Tds struggling to climb into the 60s. Patchy fog is possible in the valleys of the north late tonight into early Fri AM, especially if there is some notable clearing after the rain moves out. Another system will make its way into our region with perhaps a more widespread shield of stratiform rain with embedded/trailing convection Friday night into Saturday, similar to what we saw on Monday. However there is still a great deal of model-to-model and run-to-run spread in timing and location of these convective features moving across the country, so confidence is low to medium. --------------------------------------------------------------- KEY MESSAGE 2: Increasing heat risk builds through the middle and latter part of next week. A deep trough settling into the Pacific Northwest and Intermountain West this weekend will likely result in a downstream upper ridge developing over the eastern US by early next week. Blended ensemble guidance driving the prototype probabilistic Heatrisk is showing a signal for a significant warmup for Central PA to end June and start July. There is still spread in ensembles regarding the placement of the upper level ridge, but there is the potential for high temperatures to exceed 90 degrees over a large portion of the area towards the end of the forecast period (Tue-Thu). With humidity also expected to be on the rise, we may see heat index values approach 100 degrees by mid to late week, especially in the lower Susq Valley. Depending on the exact positioning of the ridge, there may also be some potential for clusters of showers and thunderstorms moving in from the northwest, but in the absence of organized convection arriving from upstream, this may predominantly be a rain-free pattern for a few to several days starting Sunday. Highest chance for convection is later in the week. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... A surface cold front and upper level trough headed our way from the Ohio Valley will move east into Western and Central PA late this afternoon and evening producing areas of brief CIG and VSBY reductions in SHRA/SCT TSRA - mainly acrs the NW half of the state. Otherwise we're looking at predominantly VFR conditions through the first half of tonight. Showers and storms less likely across the far southeast sites (MDT, LNS) prior to 06Z Friday. The area overall is more likely to see more in the way of a steady light to moderate rain late Friday night into Saturday morning, as a weak low tracks eastward across far southern PA or just south of PA. Outlook... Friday night-Sat...Restrictions likely in periods of stratiform rain and a few thunderstorms. Sun...Mainly VFR with restrictions unlikely in any afternoon -SHRA. Mon...Mainly VFR, dry conditions prevail. && .CTP WATCHES/WARNINGS/ADVISORIES... None. && WHAT HAS CHANGED...Lambert/Colbert KEY MESSAGES...Lambert/Colbert/Bauco DISCUSSION...Lambert/Colbert/Bauco AVIATION...Lambert/Martin
Hazardous Weather Outlook National Weather Service State College PA 1045 AM EDT Thu Jun 25 2026 PAZ004>006-010>012-017-018-024-033-037-041-042-261445- Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield- Northern Centre-Cambria-Somerset-Tioga-Northern Lycoming-Sullivan- 1045 AM EDT Thu Jun 25 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. Isolated strong to severe thunderstorms with gusty winds are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ064>066-261445- Adams-York-Lancaster- 1045 AM EDT Thu Jun 25 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Hot and humid conditions may result in an increased risk of heat- related illness during the middle of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ019-025>028-034>036-045-046-049>053-056>059-063-261445- Southern Centre-Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton- Franklin-Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland- 1045 AM EDT Thu Jun 25 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. Isolated strong to severe thunderstorms with gusty winds are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Hot and humid conditions may result in an increased risk of heat- related illness during the middle of next week. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. Lambert
Special Weather Statement
National Weather Service State College PA
434 PM EDT Thu Jun 25 2026
PAZ017-252100-
Clearfield PA-
434 PM EDT Thu Jun 25 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN CLEARFIELD COUNTY
THROUGH 500 PM EDT...
At 434 PM EDT, Doppler radar was tracking a strong thunderstorm near
DuBois, moving east at 35 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Clearfield, Sandy, Curwensville, Hyde, Plymptonville, Rockton, S.B.
Elliot State Park, Grampian, Troutville, and Lumber City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4110 7880 4118 7842 4088 7843 4090 7881
TIME...MOT...LOC 2034Z 267DEG 32KT 4100 7877
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
BaucoSpecial Weather Statement
National Weather Service State College PA
458 PM EDT Thu Jun 25 2026
PAZ017-252145-
Clearfield PA-
458 PM EDT Thu Jun 25 2026
...A STRONG THUNDERSTORM WILL IMPACT CENTRAL CLEARFIELD COUNTY
THROUGH 545 PM EDT...
At 458 PM EDT, Doppler radar was tracking a strong thunderstorm near
Clearfield, moving east at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Clearfield, Philipsburg, Woodland, Curwensville, Hyde, Osceola Mills,
Plymptonville, Chester Hill, Jeffries, Lecontes Mills, Morrisdale,
West Decatur, Grampian, Kylertown, Wallaceton, Lumber City, and
Clearfield-Lawrence Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4107 7866 4111 7819 4096 7816 4092 7818
4091 7822 4089 7822 4088 7825 4087 7824
4085 7825 4085 7829 4084 7830 4090 7870
TIME...MOT...LOC 2058Z 272DEG 27KT 4097 7858
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH
BaucoThe State College radar (KCCX), 46 km away, was scanning. The volume nearest the first event began at 21:07 UTC.
2 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked down multiple trees onto Curwensville Grampian Highway near Curwensville.
A severe thunderstorm, producing wind gusts estimated near 60 mph, knocked down a tree near the intersection of Washington Avenue and Country Club Road near Hyde. An additional second batch of trees was knocked down on McPhearson Street in Hyde.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2026Every state in 2026This day in weather historyWarnings in Pennsylvania, June 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1341744, 1341745.