Tornadoes and Flash Flooding in Pennsylvania, June 26, 2024

Name: Tornadoes and Flash Flooding in Pennsylvania, June 26, 2024
Start: 2024-06-26T15:36
End: 2024-06-26T20:30
Location: Pennsylvania

June 26, 2024 · NWS PBZ · 42 events in 8 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $3.7 million
Crop damage: None recorded
Events: 42

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.

What happened

The episode as NWS PBZ wrote it up.

A well-organized upper shortwave trough crossing the western Great Lakes and Ohio River Valley and associated cold front crossed the region. Warm, moist conditions across the Ohio River Valley along with limited cloud coverage resulted in increasing instability (2000-3000 J/kg) over the course of the day. This along with increasing vertical wind shear up to 40kts (effective) as the trough and front approached from the west brought conditions favorable for severe weather by late afternoon / early evening. Damaging wind was the main threat with a notable mid-level dry layer, however, tornadoes were also possible.

What forecasters said that day

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 26, 2:14 PM EST, 1 hour 22 minutes earlier.

Area forecast discussion, Jun 26, 2:14 PM EST, 1 hour 22 minutes before

Area Forecast Discussion
National Weather Service Pittsburgh PA
314 PM EDT Wed Jun 26 2024

.SYNOPSIS...
Thunderstorms capable of producing damaging wind and localized
flooding are expected this afternoon and evening ahead of a cold
front. Dry and seasonable weather will return Thursday, with
rising temperature expected Friday.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
KEY MESSAGES:

- Flash Flood threat is trending as highest probability focused
  north of Interstate 80.
- A Severe Thunderstorm Watch remains in effect through 10pm EDT
  for northwest PA with damaging wind and hail as the mentioned
  concerns.
- Probability of impact via either wind, hail and flooding
  lowering for locations south of Interstate 80.

-------------------------------------------------------------------

315pm Update:
The area stretching from northeast Ohio to northwest PA
continues to be the focus for flash flood potential as analysis
shows an overlapping maxima of 700-400mb convergence, surface
convergence, rising PWAT values and slow storm motion. Rainfall
rates of 1-2"/hr or higher remain possible, through the axis
likely stays north of I-80 (and potentially even just north of
northern forecast zones). While a Severe Thunderstorm Watch for
northwest PA remains in effect til 10pm, the overall threat
environment for wind and hail seems to be decreasing and
forcing/lift sits north of the region and vort advection from
the southwest continues to spread more stable air (highlighted
by -100 CIN values via MLCAPE mesoanalysis).

Latest hi-res modeling suggests the focus over the first 1-3
hours will be flash flooding along the frontogenetic banding of
heavy rain thunderstorms in northwest PA, which should
gradually progress east through that time. While showers and low
probability thunderstorms remain possible south, the most
likely occurrence is dry weather until the approach of the
surface cold front. A quick surge of warm, moist air at the
surface ahead of the boundary should help destabilize the
environment for thunderstorm development; timing of entering
eastern OH is 5-7pm EDT and reaching western PA between 6-8pm
with storms exiting the entire region generally by 10pm EDT.
There will be a narrow window then for potential damaging
wind/hail and localized flash flooding for areas south of I-80
but the shortened window for instability maximization makes
probability of occurrence low.

Shower and thunderstorm activity is likely to weaken late
tonight as surface instability wanes along with the passage of
the cold front. Much of the severe threat should subside by 10pm
EDT while lingering post-frontal showers and convective
stratiform rain regions exit the higher terrain of WV by early
Thursday morning. Dry air and residual mixing of a NW post-
frontal wind should mitigate morning fog risk, but residual
boundary layer moisture in river valleys (favoring locations SE
of Pittsburgh) could have patchy fog development.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY NIGHT/...
KEY MESSAGES:

- Dry weather returns.
- Temperature rises above normal again Friday.

-------------------------------------------------------------------

Cool, dry northwest flow will develop Thursday as high pressure
builds in from the northwest. Residual moisture and delay in
subsidence is likely to allow for lingering stratocu Thursday
morning that turns into scattered to occasionally broken
afternoon cumulus. Cold advection and cloud cover will result in
more seasonable afternoon temperature while post-frontal mixing
may support NW wind gusts around 20 mph.

The surface high will shift over New England by Friday as
heights aloft rise ahead of the next upper level shortwave
trough. Positioning of the high will support weak warm, moist
advection amid mostly clear skies to raise area temperature
about 5 degrees above the daily average. Broad ascent may
increase mid to high level clouds and even low probability
showers Friday night as weak perturbations ahead of the main
upper level trough axis.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
KEY MESSAGES:

- Shower and thunderstorm chances return Saturday into Sunday
  with the next low pressure system.
- Low probabilities exist for a damaging wind and flooding
  threat with these thunderstorms.

-------------------------------------------------------------------

Broad ascent within warm, moist southwesterly flow ahead of the
main upper level trough axis will support increasing shower and
thunderstorm probabilities starting early Saturday morning.
Arrival of a more notable embedded shortwave and the surface
cold front Saturday afternoon and evening is likely to help
concentrate convective activity (currently favoring NW PA) and
spreading it southeast through Sunday morning.

Variation in storm timing and environment remains large due to
differences in upper trough depth/timing as well as convective
evolution prior to its (and cold fronts) arrival. Latest
analysis suggests a low probability risk for damaging wind
(mean values currently show 30-40kts of 0-6km shear) and
localized flooding (tall-skinny CAPE values around 1500 J/kg
with PWATs approaching daily maxima). Will mention threat in HWO
and monitor evolving forecasts for this period.

Dry weather and seasonable temperature is likely by late Sunday
into Monday as the upper trough axis moves east and high
pressure builds in from the western Great Lakes.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
A broken band of rain showers is currently tracking across the
state of Ohio along a low-level jet. Impacts have only been
noted to visibility at terminal for a brief period.

Restrictions appear promising to start between 20Z and 03Z, as
convection develops along a frontal boundary near Lake Erie and
a shortwave ejects southeast; TEMPO groups continue for all
sites with scattered coverage. Strong to severe wind (40mph to
65mph) gusts could be observed with passing downdrafts and hail
up to the size of quarters could also develop in isolated storms
between 20Z to 00Z. Probability of thunderstorms rapidly
decreases after 04Z (MGW/LBE/DUJ will likely be the last to be
impacted) as the trough ventures east.

MVFR is expected as the thunderstorms end, with a period of
showers.

IFR is likely (LIFR possible) overnight with low level moisture
in place. Restrictions in stratus/fog are possible with all
sites; TEMPOS will be added in the afternoon update.

.Outlook...

VFR is then expected through Friday under high pressure.

Restriction are possible Friday night with a crossing warm
front.

Restrictions are likely Saturday and Saturday night with
showers and thunderstorms ahead of and along a crossing cold
front. VFR returns Sunday under high pressure.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...None.
OH...None.
WV...None.

&&

SYNOPSIS...Frazier
NEAR TERM...Frazier
SHORT TERM...Frazier
LONG TERM...Frazier
AVIATION...WM/Hefferan

Hazardous weather outlook, Jun 26, 12:25 PM EST, 3 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
125 PM EDT Wed Jun 26 2024

OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031-073>078-
WVZ001>004-012-021-509>514-271730-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Beaver-Allegheny-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-Western Tucker-Eastern Tucker-
125 PM EDT Wed Jun 26 2024

This Hazardous Weather Outlook is for east central Ohio, southwest
Pennsylvania, western Pennsylvania, and northern West Virginia.

.DAY ONE...This afternoon and tonight.

Showers and thunderstorms are expected this afternoon and evening,
generally moving from the northwest to the southeast. The main
threats are damaging wind and localized flooding (with the flooding
risk favoring northwest PA and poor drainage areas). Low
probabilities exist for large hail and a tornado.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorm chances will increase through the day Saturday within a
warm, moist environment. Probabilities remain low at this time, but
early indications suggest a risk for damaging wind and flash
flooding
with this system. This period is worth monitoring for forecast
updates in the coming days.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

PAZ007>009-013>016-022-271730-
Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Armstrong-
125 PM EDT Wed Jun 26 2024

...SEVERE THUNDERSTORM WATCH 464 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for western Pennsylvania.

.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.

Showers and thunderstorms are expected this afternoon and evening,
generally moving from the northwest to the southeast. The main
threats are damaging wind and localized flooding (with the flooding
risk favoring northwest PA and poor drainage areas). Low
probabilities exist for large hail and a tornado.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorm chances will increase through the day Saturday within a
warm, moist environment. Probabilities remain low at this time, but
early indications suggest a risk for damaging wind and flash
flooding
with this system. This period is worth monitoring for forecast
updates in the coming days.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

In the hours before

Local storm report, Jun 26, 1:03 PM EST, 2 hours 33 minutes before

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
203 PM EDT Wed Jun 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0340 PM     Tstm Wnd Dmg     1 NE Big Run            40.99N  78.86W
06/23/2024                   Jefferson          PA   Public

            Delayed Report. Local farmer reported numerous downed
            trees in property. Time estimated based on radar.

&&

Event Number PBZ2432768

JF

Special weather statement, Jun 26, 2:23 PM EST, 1 hour 13 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
323 PM EDT Wed Jun 26 2024

PAZ009-261945-
Forest PA-
323 PM EDT Wed Jun 26 2024

...STRONG THUNDERSTORMS WILL IMPACT FOREST COUNTY UNTIL 345 PM EDT...

At 322 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line from near Tionesta to 5 miles west of
Marienville, moving northeast at 40 mph.

HAZARD...Wind gusts of 40 to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is possible.

Locations impacted include...
  Marienville, Tionesta, Kellettville, West Hickory, Starr and East
  Hickory.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4148 7951 4162 7951 4163 7925 4162 7896
      4150 7896 4142 7916 4143 7921 4143 7923
TIME...MOT...LOC 1922Z 244DEG 33KT 4154 7947 4145 7921

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Bookbinder

Special weather statement, Jun 26, 3:15 PM EST, 21 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
415 PM EDT Wed Jun 26 2024

PAZ009-015-016-262100-
Jefferson PA-Forest PA-Clarion PA-
415 PM EDT Wed Jun 26 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL FOREST...CLARION
AND NORTHERN JEFFERSON PA COUNTIES UNTIL 5 PM EDT...

At 415 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms between St. Petersburg and Rimersburg, moving
northeast at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.

Locations impacted include...
  Clarion, Knox, Rimersburg, Sligo, Strattanville, Limestone,
  Shippenville, St. Petersburg, Corsica, Callensburg, Sigel, Fisher,
  Cook Forest State Park, Clarington and Clear Creek State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

Torrential rainfall is also occurring with this storm and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4125 7961 4143 7910 4142 7909 4134 7909
      4135 7908 4135 7902 4137 7898 4129 7879
      4103 7952 4117 7969
TIME...MOT...LOC 2015Z 244DEG 32KT 4111 7946

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

Bookbinder

Local storm report, Jun 26, 3:18 PM EST, 18 minutes before

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
418 PM EDT Wed Jun 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     Tstm Wnd Dmg     9 ESE Tionesta          41.47N 79.29W
06/26/2024                   Forest             PA   Public

            Time estimate by radar (public report had
            3:30 pm). One 8 inch and one 12 inch
            diameter tree fell on Guitonville Road.

&&

Craven

The radar

The State College radar (KCCX), 84 km away, was scanning. The volume nearest the first event began at 20:35 UTC.

Open the radar archive at this moment

Event by event

30 thunderstorm wind, 7 tornado, 5 flash flood. Local standard time, as filed.

Thunderstorm Wind, Jefferson

When: June 26, 3:36 PM EST
Where: Jefferson County, 2 mi W of Hormtown
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 41.150, -78.960

Trees down along Waterfall Lane.

Thunderstorm Wind, Clarion

When: June 26, 3:40 PM EST
Where: Clarion County, 1 mi ESE of Fisher
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 41.260, -79.230

Trees snapped and uprooted. Power out for more than 14hrs.

Thunderstorm Wind, Jefferson

When: June 26, 3:40 PM EST
Where: Jefferson County, 1 mi NE of Emerickville
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 41.140, -78.970

Downed trees blocking Interstate 80 on-ramp at exit 86.

Thunderstorm Wind, Jefferson

When: June 26, 3:46 PM EST
Where: Jefferson County, 1 mi S of (Duj)dubois-Jefferso
Measured: 57 kt (66 mph) measured gust
Reported by: ASOS
Coordinates: 41.170, -78.900

KDUJ (Dubois Airport) measured 57 knots.

Thunderstorm Wind, Jefferson

When: June 26, 3:47 PM EST
Where: Jefferson County, 1 mi E of Brockway
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 41.250, -78.790

Trees and powerlines down (including a house) on Main St in Brockway.

Thunderstorm Wind, Jefferson

When: June 26, 3:50 PM EST
Where: Jefferson County, 1 mi E of Brockway
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 41.250, -78.790

Trees and lines down on house in Brockway.

Tornado, Washington

When: June 26, 6:26 PM EST to 6:27 PM EST
Where: Washington County, 1 mi E of Popoffs Corners to 2 mi E of Popoffs Corners
Rating: EF1
Path length: 0.48 mi
Path width: 100 yd
Continued into: Allegheny, Pa (PBZ)
Property damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 40.427, -80.306

A National Weather Service survey concluded that a tornado began near the intersection of Old Steubenville Pike Rd and Route 22 on the Washington and Allegheny County border, and then progressed east-southeastward toward the town of Oakdale. Damage was sporadic and primarily to trees, with several trees sheared off near the |top, and a few large trees snapped lower on the trunks.

The only damage noted in the survey was large branches broken (1-3 diameter) in Washington county.

Tornado, Allegheny

When: June 26, 6:27 PM EST to 6:38 PM EST
Where: Allegheny County, 1 mi WSW of Boggs to Oakdale
Rating: EF1
Path length: 6.36 mi
Path width: 100 yd
Property damage: $50,000
Reported by: NWS Storm Survey
Coordinates: 40.426, -80.297

A National Weather Service survey concluded that a tornado began |near the intersection of Old Steubenville Pike Rd and Route 22 on |the Washington and Allegheny County border, and then progressed |east-southeastward toward the town of Oakdale. Damage was sporadic|and primarily to trees, with several trees sheared off near the |top, and a few large trees snapped lower on the trunks. More |concentrated damage was noted on Seabright Rd, Kelso Rd, and |Whittengale Rd. In these areas, several large hardwood and |softwood trees were snapped midway up their bases. Two large trees|were also uprooted on Whittengale road. These locations are what |prompted the EF1 designation, as little damage was noted to |structures, except from where trees had fallen near or on them. |The tornado then weakened as it progressed toward Oakdale. Some |damage was noted to a few trees in Oakdale with large branches |broken.

Thunderstorm Wind, Allegheny

When: June 26, 6:30 PM EST
Where: Allegheny County, 2 mi NW of Mc Donald
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.400, -80.250

Trees down along North Branch and Seabright roads.

Thunderstorm Wind, Allegheny

When: June 26, 6:32 PM EST
Where: Allegheny County, 1 mi SW of Fayetteville
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.420, -80.230

Trees down at Donaldson Park, Donaldson Elementary School, and North Fayette Municipal building.

Thunderstorm Wind, Allegheny

When: June 26, 6:35 PM EST
Where: Allegheny County, 1 mi S of Fayetteville
Measured: 50 kt (58 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 40.420, -80.220

Numerous trees down.

Thunderstorm Wind, Allegheny

When: June 26, 6:38 PM EST
Where: Allegheny County, 1 mi W of Oakdale
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 40.400, -80.190

Uprooted tree along Vicennes Avenue with structural damage to home.

Thunderstorm Wind, Allegheny

When: June 26, 6:42 PM EST
Where: Allegheny County, 1 mi E of Glendale
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.400, -80.090

Wind damage reported.

Thunderstorm Wind, Allegheny

When: June 26, 6:50 PM EST
Where: Allegheny County, 1 mi N of Munhall
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.420, -79.920

Trees down near Squirrel Hill South.

Tornado, Allegheny

When: June 26, 6:57 PM EST to 7:00 PM EST
Where: Allegheny County, 1 mi NNW of East Mc Keesport to 1 mi W of Trafford
Rating: EF1
Path length: 2.17 mi
Path width: 275 yd
Continued into: Westmoreland, Pa (PBZ)
Property damage: $1.0 million
Reported by: NWS Storm Survey
Coordinates: 40.389, -79.808

On the evening of Wednesday, June 26th, just before 730 PM EDT, a small, but intense squall line rapidly developed along the Washington and Allegheny county line just southwest of Imperial. Ground and aerial surveys confirmed tornado damage began in the high terrain south of Turtle Creek, in the Wilmerding and East McKeesport area, continuing across Trafford, through hilly, rural terrain and ultimately crossing the Pennsylvania Turnpike before finally dissipating just east of the Bushy Run Battlefield |parkland near Harrison City. Damage with this tornado was primarily confined to trees, of which untold thousands were damaged, uprooted, or snapped along the tornado's path.

Thunderstorm Wind, Allegheny

When: June 26, 6:59 PM EST
Where: Allegheny County, 1 mi E of Wilmerding
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 40.380, -79.810

Numerous reports of tree damage across North Versailles and East McKeesport.

Tornado, Westmoreland

When: June 26, 7:00 PM EST to 7:11 PM EST
Where: Westmoreland County, 2 mi W of Trafford to 1 mi NE of Harrison City
Rating: EF1
Path length: 9.37 mi
Path width: 300 yd
Property damage: $500,000
Reported by: NWS Storm Survey
Coordinates: 40.379, -79.796

On the evening of Wednesday, June 26th a small, but intense squall line rapidly developed along the Washington and Allegheny county line just southwest of Imperial. |This storm progressed rapidly eastward over the next hour, traveling nearly 50 mph just south of US 22, all the way to the Laurel Highlands.

As it entered Westmoreland county, considerable tree damage was observed throughout Trafford, along with minor roof damage, and utility pole separation leading to widespread power outages. Both dugouts at the baseball field adjacent to Trafford Elementary/Middle school were also destroyed. Other areas of concentrated tree damage were noted in the dense woodlands near Pine Hollow road, neighborhoods around Government Road just west of the Pennsylvania Turnpike, as well as in the Bushy Run Battlefield park area near Harrison City. Areas of straight-line wind damage, similar in intensity to the tornado, were sporadically observed both north and south of the tornado.

Thunderstorm Wind, Allegheny

When: June 26, 7:01 PM EST
Where: Allegheny County, 1 mi S of Wall
Measured: 50 kt (58 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.390, -79.770

Trees down along Mosside Blvd. near Signal Hill Dr.

Thunderstorm Wind, Westmoreland

When: June 26, 7:06 PM EST
Where: Westmoreland County, 1 mi SSW of Pleasant Vly
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.360, -79.680

Large trees snapped and uprooted along Sandy Hill road and Country View drive.

Tornado, Westmoreland

When: June 26, 7:06 PM EST to 7:20 PM EST
Where: Westmoreland County, 1 mi NNE of Pleasant Vly to 1 mi NW of Greenwald
Rating: EF2
Path length: 10.84 mi
Path width: 200 yd
Reported by: NWS Storm Survey
Coordinates: 40.395, -79.661

On the evening of Wednesday, June 26th a small, but intense squall line rapidly developed along the Washington and Allegheny county line just southwest of Imperial. This storm progressed rapidly eastward over the next hour, traveling nearly 50 mph just south of US 22, all the way to the Laurel Highlands.

This tornado began west of the Manor Valley golf course, causing significant tree |damage to both it, the Cloverleaf golf course, and several properties along Boquet road before crossing PA 66. The tornado intensified as it then moved across Beaver Run Road, Jobes Road, Crooked Run Road, and Winter lane, before crossing PA 819. Low end EF-2 damage was first observed along Jobes road where the tornado descending down a steep hillside, snapping and uprooting dozens of trees. After crossing Rt 819, the tornado crossed Orr Rd, producing roof damage to the Orrco plant, significant tree damage to neighboring homes, as well as roof and silo damage to a downstream farmstead along Hannastown Rd. Just northwest of the Orrco building, the survey revealed an outcropping of mature trees where the vast majority had been snapped, also yielding low end EF-2 damage. The tornado continued east-southeast for another |couple of miles, steadily weakening while producing more sporadic tree damage until dissipating near US 119.

Thunderstorm Wind, Westmoreland

When: June 26, 7:07 PM EST
Where: Westmoreland County, 1 mi WSW of Pleasant Vly
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.370, -79.690

Multiple trees down.

Thunderstorm Wind, Westmoreland

When: June 26, 7:08 PM EST
Where: Westmoreland County, 1 mi N of Manor
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.350, -79.670

Multiple trees and traffic lights down.

Thunderstorm Wind, Westmoreland

When: June 26, 7:08 PM EST
Where: Westmoreland County, Murrysville
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 40.430, -79.700

Multiple calls of trees and wires down across Murrysville.

Flash Flood, Allegheny

When: June 26, 7:10 PM EST to 8:30 PM EST
Where: Allegheny County, 2 mi ENE of Mt Lebanon to 2 mi ESE of Dormont
Cause: Heavy Rain
Reported by: State Official
Coordinates: 40.389, -79.998

Roadway flooding reported in Brookline.

Thunderstorm Wind, Westmoreland

When: June 26, 7:12 PM EST
Where: Westmoreland County, 1 mi NE of Boquet
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.390, -79.590

Trees snapped near Cloverleaf Golf Course.

Thunderstorm Wind, Westmoreland

When: June 26, 7:15 PM EST
Where: Westmoreland County, 1 mi WSW of Five Pts
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.390, -79.540

Trees down along Winter Lane.

Flash Flood, Allegheny

When: June 26, 7:15 PM EST to 8:30 PM EST
Where: Allegheny County, 1 mi SE of Ben Avon
Cause: Heavy Rain
Reported by: State Official
Coordinates: 40.490, -80.036

Flooding reported along Benton Avenue.

Thunderstorm Wind, Westmoreland

When: June 26, 7:18 PM EST
Where: Westmoreland County, 1 mi N of Hannastown
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.370, -79.500

Several trees uprooted.

Flash Flood, Allegheny

When: June 26, 7:18 PM EST to 8:30 PM EST
Where: Allegheny County, 1 mi ESE of Mc Kees Rocks
Cause: Heavy Rain
Reported by: State Official
Coordinates: 40.465, -80.054

Flooding reported near Roxian Theatre.

Thunderstorm Wind, Westmoreland

When: June 26, 7:19 PM EST to 8:30 PM EST
Where: Westmoreland County, 1 mi WNW of Crabtree
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.380, -79.490

Thunderstorm wind damage.

Thunderstorm Wind, Westmoreland

When: June 26, 7:19 PM EST
Where: Westmoreland County, 2 mi ESE of Five Pts
Measured: 50 kt (58 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 40.390, -79.490

Barn destroyed along Hannastown road.

Flash Flood, Allegheny

When: June 26, 7:19 PM EST to 8:30 PM EST
Where: Allegheny County, 1 mi W of Option
Cause: Heavy Rain
Reported by: State Official
Coordinates: 40.431, -79.990

Flooding along 56 South 9th St.

Thunderstorm Wind, Greene

When: June 26, 7:26 PM EST
Where: Greene County, 2 mi SSW of Kirby
Measured: 50 kt (58 mph) estimated gust
Property damage: $1.0 million
Reported by: Emergency Manager
Coordinates: 39.770, -80.130

Trees down.

Tornado, Greene

When: June 26, 7:27 PM EST to 7:29 PM EST
Where: Greene County, 2 mi SSW of Kirby to 2 mi S of Kirby
Rating: EF0
Path length: 0.25 mi
Path width: 65 yd
Property damage: $50,000
Reported by: NWS Storm Survey
Coordinates: 39.777, -80.130

NWS Pittsburgh confirmed that an EF-0 tornado touched down near the Mt. Morris,PA on the evening of June 26, 2024. Snapped trees and minor roof damage was noted along Dairy Farm Road. A carry-on trailer was also tossed in a ditch. Pictures of damage was provided by Greene County Emergency Services. Additional damage was not reported on adjacent roads. The tornado lifted in the woods just east of Dairy Farm Road.

Thunderstorm Wind, Westmoreland

When: June 26, 7:30 PM EST
Where: Westmoreland County, 1 mi W of Breinizer
Measured: 50 kt (58 mph) estimated gust
Property damage: $1.0 million
Reported by: Public
Coordinates: 40.400, -79.280

Trees down along Pizza Barn road.

Flash Flood, Allegheny

When: June 26, 7:30 PM EST to 8:30 PM EST
Where: Allegheny County, Oakmont
Cause: Heavy Rain
Reported by: State Official
Coordinates: 40.517, -79.823

Flooding reported along Commons Dr.

Tornado, Indiana

When: June 26, 7:30 PM EST to 7:31 PM EST
Where: Indiana County, 4 mi WSW of Grafton to 4 mi WNW of Strangford
Rating: EF0
Path length: 0.32 mi
Path width: 30 yd
Property damage: $50,000
Reported by: NWS Storm Survey
Coordinates: 40.456, -79.295

On the evening of Wednesday, June 26th, a small, but intense squall line rapidly developed along the Washington and Allegheny county line just southwest of Imperial. |This storm progressed rapidly eastward over the next hour, traveling nearly 50 mph just south of US 22, all the way to the Laurel Highlands. A brief EF-0 tornado touched down around 830 PM just northwest of Blairsville, primarily along Newport Rd, where concentrated and convergent, albeit minor, tree damage was observed just north of the oxbow in Two Lick Creek and the Conemaugh River.

Thunderstorm Wind, Indiana

When: June 26, 7:31 PM EST
Where: Indiana County, 3 mi WNW of Strangford
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.450, -79.270

Trees down.

Thunderstorm Wind, Westmoreland

When: June 26, 7:42 PM EST
Where: Westmoreland County, 2 mi E of West Fairfield
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.350, -79.090

Multiple trees snapped.

Thunderstorm Wind, Westmoreland

When: June 26, 7:44 PM EST
Where: Westmoreland County, New Florence
Measured: 50 kt (58 mph) estimated gust
Reported by: Public
Coordinates: 40.380, -79.080

Trees damaged along West 15th St.

Thunderstorm Wind, Fayette

When: June 26, 8:18 PM EST
Where: Fayette County, 2 mi E of Flat Rock
Measured: 50 kt (58 mph) estimated gust
Reported by: Park/Forest Service
Coordinates: 39.770, -79.470

Trees down between Farmington and Elk Park, PA.

Thunderstorm Wind, Fayette

When: June 26, 8:22 PM EST
Where: Fayette County, 5 mi NE of Markleysburg
Measured: 50 kt (58 mph) estimated gust
Reported by: State Official
Coordinates: 39.780, -79.410

Trees down along Mae West road and Tub Run road.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 2024 Every state in 2024 This day in weather history The tornado archive for Pennsylvania, 2024 Warnings in Pennsylvania, June 2024

Sources

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: 1198066, 1198067, 1198068, 1198069, 1198070, 1198071, 1198110, 1198118, 1198072, 1198074, 1198075, 1198076, 1198077, 1198078, 1198133, 1198079, 1198137, 1198080, 1198081, 1198138, 1198082, 1198083, 1198084, 1198085, 1198086, 1198087, 1198088, 1198089, 1198091, 1198092, 1198093, 1198094, 1198096, 1198121, 1198097, 1198098, 1198141, 1198099, 1198100, 1198101, and more.