Scattered late morning and early afternoon hour showers and thunderstorms continued to exhibit upscale growth into a broken line of strong-to-severe thunderstorms during the afternoon and evening hours of June 11, 2026. Environmental analysis during the late afternoon hours across central Pennsylvania exhibited ample instability (with SBCAPE values exceeding 3000 J/kg across the entire region),…
Every event with a place to put it. Tap one for its entry below.
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.
Scattered late morning and early afternoon hour showers and thunderstorms continued to exhibit upscale growth into a broken line of strong-to-severe thunderstorms during the afternoon and evening hours of June 11, 2026. Environmental analysis during the late afternoon hours across central Pennsylvania exhibited ample instability (with SBCAPE values exceeding 3000 J/kg across the entire region), steep low-level lapse rates, and ample DCAPE values exceeding 1000 J/kg. While shear was not the most sufficient, ample instability allowed for storms to continue in a broken line as they shifted eastward across the region through the evening hours. Widespread wind damage was reported along the broken line of thunderstorms, with numerous trees down across much of the forecast area south of the Interstate 80 corridor. Across areas north of the Interstate 80 corridor, scattered instances of wind damage were reported, with the most widespread in Lycoming County.
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 11, 11:39 AM EST, 1 hour 58 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service State College PA
1239 PM EDT Thu Jun 11 2026
.WHAT HAS CHANGED...
Heat Advisory issued for Lancaster, York, Adams, Cumberland,
Dauphin, and Lebanon Counties for Thursday and Friday.
&&
.KEY MESSAGES...
1) Increasing heat and humidity will bring increased risk for
heat-related illnesses Thursday, and especially on Friday.
2) Daily shower and thunderstorm chances continue through the
end of the work week. Some strong to severe thunder with
damaging winds possible.
3) A refreshing decrease in humidity is a good bet this weekend
with high pressure moving in after a cold front.
&&
.DISCUSSION...
KEY MESSAGE 1: Increasing heat and humidity will bring
increased risk for heat-related illnesses Thursday, and
especially on Friday.
With an upper level ridge in place advecting in a very warm to
hot airmass, heat and humidity will continue to build today and
Friday, particularly for the eastern two thirds of the forecast
area.
There is quite a bit of uncertainty remaining in how high the
temperatures and heat index values get due to variable amounts
of alto cu from weak warm advection aloft and remnant cloud
cover from overnight/mid morning convection. Increasing chc
for late afternoon and evening SHRA/TSRA will also add to the
uncertainty of max temps.
The continued thinking is that the NBM is a bit too high with
both temperatures and dew points both days, especially given the
recent high bias. Therefore, similar to previous forecast
cycles, went a few degrees cooler than the NBM.
All of this being said, the forecast heat index for Thursday
and Friday still get to the upper 90s and low 100s for the
southeastern portions of the area on Thursday, particularly the
Harrisburg/Lancaster/York areas. Heat Advisories have been
issued for Lancaster, York, Adams, Cumberland, Dauphin, and
Lebanon Counties for Thursday and Friday where HREF
probabilities of heat index > 100F are highest.
---------------------------------------------------
KEY MESSAGE 2: Daily shower and thunderstorm chances continue
through the end of the work week. Some strong to severe thunder
with damaging winds possible.
Underneath a broad ridge of high pressure, a couple shortwaves
will drift across Pennsylvania over the next few days.
Sufficient instability in the presence of warm & moist air along
with weak but sufficient shear will lead to multiple rounds of
showers and thunderstorms today and Friday.
The first feature at the surface and aloft that will spark PM
SHRA/TSRA comes in the form of a compact shortwave trough
centered over Lake Erie/SW Ontario with its trough axis
extending south across Ecent/Scent Ohio and moving east at a
little over 30KT.
Meso-B lift and 1-2 deg C of cooling within the 700 mb layer
along with westerly 0-3 km bulk shear increasing to around 30 KT
will help to increase instability and organized updrafts in
TSRA that should push through much of our CWA in 2-3 linear
features, with the main severe wx threat coming in the form of
localized wind damage associated with mini bows/broken-S
signatures.
If these multicell clusters can develop large enough cold
pools, an elevated threat of damaging wind gusts may materialize
in the form of an MCS. Such a scenario cloud produce a swath of
more significant wind damage (most likely across the Mid/lower
Susq Valley late this afternoon/evening and potentially in any
part of the CWA on Friday. Slight Risks with 30% wind
probabilities have been issued for both today and Friday across
southeast PA.
A cold frontal passage will occur on Friday. An approaching upper
trough and high available moisture suggest severe thunderstorms
are possible. But, the small ridge that pumps up overhead late
Thu could be a setback for how widespread the threat will be.
The biggest question is timing/speed of the cold front. A faster
progression could mean the cold front clears our area before
peak heating (lower threat of damaging winds), while a later
arrival could spell more concern for severe weather.
It is worth noting that recent hi-res convective
allowing models actually bring most of the convection to NW PA
today and fail to initiate many storms at all in our forecast
area on Friday. Possible flies in the ointment to monitor.
The repeated shots of scattered to numerous SHRA/TSRA over the
next 2 days is likely to yield lower FFG thresholds and some
flash flooding would become possible, too. But, it has been very
dry recently, and everything is growing and thirsty, ready to
soak up as much as it can. As always, too much of a good thing
can be bad. We'll keep an eye on the soil saturation and other
factors that could lead to flooding.
---------------------------------------------------
KEY MESSAGE 3: A refreshing decrease in humidity is a good bet
this weekend with high pressure moving in after a cold front.
Following the passage of the aforementioned cold front, much
more comfortable conditions will arrive on Saturday and Sunday.
Temperatures will remain warm (highs in the 80s and even some
lower 90s on Sunday), but dew points will be much lower (in the
50s and lower 60s, instead of the 70s). Then, cooler
temperatures arrive by Monday with highs in the 70s to lower
80s. This will be due to another cold front passage on Sunday,
which will bring a renewed chance for showers and
thunderstorms.
&&
.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
VFR regionwide for the Central Mtns and Susq Valley through 20Z,
with earlier SHRA/TSRA impacting the NW Mtns and Laurel
Highlands with brief restrictions.
Multicell clusters & quasi-linear segments are the favored form
of convection given marginally favorable deep layer shear
(20-30 kts), along with threat for gusty to perhaps severe-
level winds given steep low- level lapse rates (8-9 C/km) and
moderate-high DCAPE (1000-1250 J/kg). Visibility restrictions
will be likely in these storms, especially given high moisture
content (PWATs around 1.5") which will bring heavy rain in
storms. Convective activity across central PA will downtrend
after 00Z as the shortwave progresses east of our area, with
patchy fog possible once again Thursday night given moist
environment & breaks in cloud cover.
Outlook...
Thursday afternoon...Restrictions possible in scattered-numerous
-SHRA/-TSRA.
Friday...Restrictions expected as FROPA brings line of -TSRA.
Saturday...Mainly VFR.
Sunday...VFR favored early, with restrictions possible as FROPA
brings chance of -SHRA/-TSRA later in the day.
Monday...Additional scattered -SHRA and associated restrictions
possible.
&&
.CTP WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT Friday for PAZ057-059-063>066.
&&
WHAT HAS CHANGED...Lambert/Banghoff/Colbert
KEY MESSAGES...Lambert/Banghoff/Colbert
DISCUSSION...Lambert/Banghoff/Colbert
AVIATION...Lambert/TeareHazardous Weather Outlook National Weather Service State College PA 156 PM EDT Thu Jun 11 2026 PAZ057-059-063>066-121800- Dauphin-Lebanon-Cumberland-Adams-York-Lancaster- 156 PM EDT Thu Jun 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT FRIDAY... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Heat Advisory. Strong to severe thunderstorms with gusty winds are possible, mainly late this afternoon and evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Severe thunderstorms with damaging winds are possible again Friday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ019-026>028-035-036-045-046-049>053-056-058-121800- Southern Centre-Huntingdon-Mifflin-Juniata-Fulton-Franklin- Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia-Perry-Schuylkill- 156 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Strong to severe thunderstorms with gusty winds are possible, mainly later this afternoon and early this evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Severe thunderstorms with damaging winds 60 mph or greater are possible again Friday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ012-018-025-034-037-041-042-121800- Northern Clinton-Northern Centre-Blair-Bedford-Tioga- Northern Lycoming-Sullivan- 156 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Strong to severe thunderstorms with gusty winds are possible this afternoon into early this evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Severe thunderstorms with damaging winds 60 mph or greater are possible again Friday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004>006-010-011-017-024-033-121800- Warren-McKean-Potter-Elk-Cameron-Clearfield-Cambria-Somerset- 156 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Severe thunderstorms with damaging winds 60 mph or greater are possible again Friday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather.
The Buffalo radar (KBUF), 118 km away, was scanning. The volume nearest the first event began at 18:33 UTC.
70 thunderstorm wind, 1 flood. Local standard time, as filed.
A strong thunderstorm producing wind gusts estimated at 50 mph knocked a tree down near Russell.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on St Clair Road near the Falcon Drive intersection.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down on Chime Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down on Hoover Road and Husband Road, blocking both lanes of traffic.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down in Burnside.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down near the intersection of 3rd Street and Hemlock Street in Nanty-Glo.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down on Moonlite Pike Road near Benson.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on Long Avenue in DuBois.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down onto Rockville Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down on Lumber City Highway.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked wires down along Westminster Drive near Tire Hill.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked trees and wires down throughout Bradford Township.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked trees down throughout Berlin.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down into a yard in Curwensville.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down along Spruce Street and Pennsylvania Avenue.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down near the intersection of Green Bridge Road and Emerick Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Shaffer Mountain Road near Central City.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down near the intersection of Short Avenue and Country Club Road in Cresson.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down near State Park Road and Anderson Creek Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down along Hollow Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto wires near the intersection of Davis Road and Gwin Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Carson Valley Road.
A quick 1 to 1.5 inches of rainfall resulted in at least 2 feet of water in basement of house on Main Street in Fox Township near Kersey.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Plank Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down near the intersection of South Dakota Road and Sarah Furnace Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down along Shellsburg Road, resulting in a small brush fire.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down along Juniata River Road in Woodbury Township.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Mix Run Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down along Woodbury Pike.
A line of severe thunderstorms knocked a tree down onto Warriors Mark Path approximately half way between Warriors Mark and Spruce Creek Road.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked down numerous trees and wires near PA-284 and PA-287.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto wires near the intersection of PA-45 and PA-453.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees down throughout Snow Shoe Township.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down along Buffalo Run Road.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked trees down in Hills Creek State Park near Lake Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down along West Beaver Avenue in State College.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked trees down along Route 184 in Cogan House Township.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees down onto wires along Spring Creek Road near Bellefonte.
A line of severe thunderstorm producing wind gusts estimated at 60 mph knocked wires down near Aspen Road and Renovo Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Aughwick Creek Road near Runk Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees and wires down near Reedsville.
A strong thunderstorm producing wind gusts estimated between 50 and 55 mph knocked down a few trees along Slacks Run Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down along 1st street in Yeagertown.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked down trees and wires along Mountain Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked multiple trees down throughout Turbett Township.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees down near the intersection of Farrandsville Road and Railroad Bridge Lane.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down near the intersection of McCoysville Road and Quarry Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Horningtown Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Route 35 N northeast of Mifflintown.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down on N Fayette Street in Mercersburg.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto wires near Warm Springs Lodge, which blocked Warm Springs Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down near the intersection of Middle Ridge Road and Cemetery Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on Spring Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down on Talhelm Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down along Harrisburg Pike in Carlisle.
A severe thunderstorm producing wind gusts estimated at 60 mph knocked multiple trees down along Stevens Hill Road in Sugarloaf Township.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on King Avenue in Shamokin Dam.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked wires down on Villa View Drive near Rouzerville.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto Clarks Valley Road near Ellendale Forge.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked electrical wires down along Webster School Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down into wires on Old Depot Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked multiple trees down throughout Riverside.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on Chestnut Grove Road near Dillsburg.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto North Lewisberry Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto power lines on Fishing Creek Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto the roadway near the intersection of Old Forge Road and Shauffnertown Road.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto the roadway near Valley Green.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down on N King Street in Jonestown.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees down throughout Fairview and Monaghan Townships.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked a tree down onto wires on E Main Street in Annville.
A line of severe thunderstorms producing wind gusts estimated at 60 mph knocked trees down throughout Berwick Township.
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: 1345927, 1345930, 1345934, 1345944, 1345947, 1345942, 1345939, 1345948, 1345946, 1345949, 1345990, 1345950, 1346003, 1345978, 1346000, 1346011, 1346014, 1346017, 1345982, 1346025, 1346033, 1346037, 1338317, 1346042, 1346044, 1346050, 1346083, 1346060, 1346084, 1346086, 1346162, 1346088, 1346064, 1346093, 1346156, 1346104, 1346150, 1346112, 1346165, 1346098, and more.