A warm, moist airmass with mid 80s temperatures and low to mid 70s dew points supported initial thunderstorm development in central Ohio with geographically moderate to strong MLCAPE values up to 3000 J/kg and 15-25 knots of effective shear. As the storms progressed east, they became more congealed along cold pools and the wind threat increased into western Pennsylvania with notable tree damage…
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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 PBZ wrote it up.
A warm, moist airmass with mid 80s temperatures and low to mid 70s dew points supported initial thunderstorm development in central Ohio with geographically moderate to strong MLCAPE values up to 3000 J/kg and 15-25 knots of effective shear. As the storms progressed east, they became more congealed along cold pools and the wind threat increased into western Pennsylvania with notable tree damage and some damage to structures as well within a line of storms producing 60-75 mph wind.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Jun 11, 12:49 PM EST, 46 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pittsburgh PA 149 PM EDT Thu Jun 11 2026 .WHAT HAS CHANGED... Severe thunderstorm watch has been issued for a majority of the region mainly for the wind threat. && .KEY MESSAGES... 1) Potential for severe weather exists today and Friday, but large uncertainty exists in timing/coverage/threats 2) Low probability flash flooding concerns exists through Friday due to warm, moist environment 3) Above-average temperature with potential for record high minimums possible through Friday, pending storm outcomes && .DISCUSSION... KEY MESSAGE 1... The warm, humid environment will continue into Friday, keeping chances for showers and thunderstorms in the forecast. Additional thunderstorms are expected Friday in advance of a cold front and crossing upper trough. A brief period of dry weather and more seasonable temperature will follow. High SBCAPE/DCAPE values and meager shear should support storms capable of damaging wind gusts, however, there is looking to be a slight increase in probability for large hail. Most of the area is now in a Slight (2/5) risk for severe weather (mainly for wind). Friday features a more well defined mid-level shortwave and surface frontal boundary that offers a lifting mechanism. This could result in more bullish precipitation/severe chances with the afternoon passage. KEY MESSAGE 2... Despite fluctuations in mid-level moisture content, area PWAT values will remain in the 90th and higher percentile ranges through Friday while thermal profiles remain warm. These factors alone create non-zero flash flood risks as they favor warm-rain processes that result in higher and more efficient rainfall rates. Add in generally weaker mid-level flow (though storm motion quickens Friday), the risk for flash flooding exists each day. However, fairly dry surfaces dampens the likelihood of flash flooding actually developing for any of these periods. The most likely outcome is minimal flooding occurrences, with issues only developing in poor-drainage locations that see prolonged 1-2"/hr rates or areas that happen to see multiple rounds of these efficient rains in a short amount of time. KEY MESSAGE 3... The combination of area dew points remaining in the 60s overnight/70s during the day while seeing enough periods of sunshine means increased heat concerns today into Friday morning, with impacts more acutely impacting heat-sensitive populations within urban environments. A brief hour of heat indices near 100F can't be ruled out, however, this is unlikely to be prolonged enough for headline issuance. Even still the lack of significant overnight cooling can act to exasperate any heat-related impacts until a cooler airmass arrives Friday night into Saturday morning. The biggest caveat to this heat potential is that convective activity could act to limit diurnal heating (or further limit overnight cooling) if it results in rain over a given location and/or maintains thicker cloud cover than anticipated. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... Weak surface convergence along a wind/temperature gradient in eastern OH plus a weak vortex traversing Lake Erie is providing lift within the unstable environment for at least scattered thunderstorm development through 00z today. Areal coverage at TAF onset time favors near ZZV/FKL/DUJ before migrating ESE through PIT/LBE/MGW (among all other terminals) and then tapering off/exiting east near/after 00z. Any thunderstorm will be capable of heavy rain reducing visibilities to 2 miles or less, gusty and erratic wind, and potential for short-notice storm development if/when outflows collide. VFR overnight will see increasing moisture convergence ahead of the approaching shortwave/surface front, resulting in MVFR to locally IFR cigs for most terminals between 07z-15z. Though unlikely to occur, one component to monitor is how far east a MCS cluster persists during the overnight period as it leaves the lower OH River Valley; if it sustains longer than modeled, thunderstorms could reach ZZV (or even HLG) between 06z-10z. This could impact components like ceiling restrictions and future convective develop for Friday. Outlook... Confidence remains low in the coverage and location on new storm development Friday along/ahead of a passing upper shortwave and surface cold front. Any thunderstorm that develops likely favors IFR visibilities, MVFR cigs and brief gusty wind. Dry advection and subsidence in the post-frontal environment favors VFR Friday evening into Saturday. The next precipitation chance arrives with shortwave movement Sunday. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && DISCUSSION...Rackley/Frazier/Lupo AVIATION...Frazier
Hazardous Weather Outlook National Weather Service Pittsburgh PA 124 PM EDT Thu Jun 11 2026 OHZ039>041-049-050-058-059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>512-121730- Tuscarawas-Carroll-Columbiana-Harrison-Jefferson OH-Guernsey-Belmont- Noble-Monroe-Mercer-Venango-Forest-Lawrence-Butler-Clarion- Jefferson PA-Beaver-Allegheny-Armstrong-Washington-Greene- Westmoreland-Higher Elevations of Westmoreland-Fayette- Higher Elevations of Fayette-Indiana-Higher Elevations of Indiana- Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston- 124 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. Scattered thunderstorms are possible this afternoon and early evening. The environment will support thunderstorms capable of damaging wind gusts and potentially large hail. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. More widespread thunderstorms are expected Friday afternoon with a crossing cold front. A few storms may be strong to severe, capable of producing damaging wind gusts. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. OHZ048-057-WVZ513-514-121730- Coshocton-Muskingum-Western Tucker-Eastern Tucker- 124 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for east central Ohio and northern West Virginia. .DAY ONE...This afternoon and tonight. Scattered thunderstorms are possible this afternoon and early evening. The environment will support thunderstorms capable of damaging wind gusts and potentially large hail. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. More widespread thunderstorms are expected Friday afternoon with a crossing cold front. A few storms may be strong to severe, capable of producing damaging wind gusts. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. Lupo
The Pittsburgh radar (KPBZ), 21 km away, was scanning. The volume nearest the first event began at 18:33 UTC.
37 thunderstorm wind. Local standard time, as filed.
US 30 closed in both directions between PA 151 and Pittsburgh Grade Road due to downed trees and wires.
Several trees down in Eldersville.
Flaugherty Run Road Blocked by at least one fallen tree just north of Broadhead Road.
A tree fell across the road and onto two people. Injuries unknown.
Trees and wires down along Wiegand Drive.
Tree down along Lindsay Road just past the Fedex building.
Tree down on power lines.
Tree down on wires.
Tree down on wires along Forsythe Lane.
Power lines down across the road.
Two trees down blocking the road.
Tree down on wires.
Large tree limbs down damaging a tent along Ridge Road near Chatham University.
Large tree down.
Tree down blocking the road at intersection of Rockdale Road and Heller Road.
Trees and wires down in New Castle.
Tree down along North Eighty Eight Road.
Trees and wires down.
Tree down across Yeash Lane.
Roof blown off of a building and wires down.
Tree down blocking Browns Ferry Road.
Wires down at Morgan Street and Cassin Avenue.
Tree down on wires along Longvue Drive.
Tree down blocking the road at intersection of Kepple Road and Stepp Road.
Tree down on Harmony Church Road blocking the road.
Tree down blocking all of Old Dairy Road.
Tree down along new Geneva Road.
Home weather station measurement.
Trees down around McClellandtown.
Tree and wires down. The wires caught fire.
Tree down across two lanes of PA-31.
Tree reported down along Route 949.
Tree down blocking the road at intersection of Melcroft Road and Buchanan Road.
A few trees down in the Clymer area.
Tree down blocking both lanes of Panic Knoxdale Road at intersection of Knoxdale Road.
Tree down at intersection of Crawfordtown Road and Brudnock Drive.
Numerous trees reported down in Punxsutawney.
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: 1348883, 1348886, 1348887, 1348888, 1351084, 1351086, 1351094, 1351088, 1351089, 1351090, 1351095, 1351092, 1351096, 1351097, 1351101, 1351104, 1351103, 1351105, 1351107, 1351108, 1351150, 1351157, 1351159, 1351163, 1351169, 1351165, 1351168, 1351179, 1351170, 1351171, 1351176, 1351182, 1352402, 1351205, 1352399, 1352400, 1352401.