A very moist airmass and a nearly stationary front resulted in rounds of thunderstorms that produced flash flooding on June 6th into the morning hours of the 7th. This included reports of flooding in Marion, Monongalia, and Preston counties in West Virginia.
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 PBZ wrote it up.
A very moist airmass and a nearly stationary front resulted in rounds of thunderstorms that produced flash flooding on June 6th into the morning hours of the 7th. This included reports of flooding in Marion, Monongalia, and Preston counties in West Virginia.
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 6, 2:35 PM EST, 1 hour 13 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 335 PM EDT Fri Jun 6 2025 .SYNOPSIS... A stationary front will remain across the region into tonight, with periodic showers and thunderstorms continuing. A few storms may continue to be severe, and additional instance of flash flooding are possible. The front will drift south Saturday, with shower and storm chances diminishing. Unsettled weather is then expected Sunday through Tuesday with a series of crossing disturbances. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... KEY MESSAGES: - Additional rounds of showers and thunderstorms into this evening - Marginal Risk for severe storms this afternoon - Ongoing flash flooding threat with training storms --------------------------------------------------------------- Showers and thunderstorms have blossomed in the very moist (upper 60s-lower 70s dewpoints) air mass in advance of the quasi-stationary boundary that still lies across northern Ohio/NW PA. A weak surface wave of low pressure has supported the development of widespread convection. Latest PIT ACARS sounding shows about 1000 J/kg of surface-based CAPE with about 30 knots of 0-6km shear. About 1000-1500 J/kg of MLCAPE exists across the region. Although DCAPE values are generally in the 400-600 J/kg range, storms have still been able to develop sufficient cores to potentially produce damaging wind and large hail in some cases. Also, modest storm organization as a result of the shear may still result in isolated instances of damaging wind. SPC has maintained the Marginal (1 out of 5) risk for this. Otherwise, the main concern is the potential for continued flash flooding in the very moist airmass. Precipitable water in the 1.5 to 1.6 inch range is near the top end of climatology. Have already issued Flash Flood Warnings in locations where training storms have produced localized 2-3 inch rainfall totals in some cases. Storms are moving relatively slowly, with some east/west training as storms move parallel to the flow. Outflow boundary interactions may also create localized enhancement/backbuilding. Flash flooding will continue to be an issue into the early evening, on a localized basis, and the precipitable water/warm cloud depths point to efficient rainfall. Expect the severe weather potential to end this evening with the loss of instability. Another shortwave trough will cross tonight, with continued showers and storms mainly south of Pittsburgh. This wave should help to push the front south of the region by Saturday morning. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... KEY MESSAGES: - Additional showers/storms south of Pittsburgh overnight - Decreased rain chances Saturday - Increasing showers/storms Sunday, with a potential severe threat ---------------------------------------------------------------- As the shortwave departs Saturday morning, the front will be pushed south of the region during the morning. This results in a decrease in PoPs during the daylight hours, with most locations from PIT on north expected to remain dry. This dry weather continues into Saturday evening, although a few showers/storms may linger near the Mason-Dixon Line. Another shortwave trough will approach and cross the Upper Ohio Valley during the late Saturday night/Sunday period, with a surface low also approaching and crossing. This low is likely to push the front northward through the region once again as a warm front. Models differ a bit on the exact track of this surface low, which could determine where the best risk of severe weather lies. Some model soundings suggest that impressive shear/hodograph curvature could exist across at least portions of the region, which if paired with sufficient instability, could suggest a larger severe threat than the current Marginal risk advertised by SPC. Details will continue to be monitored over the next couple of days. The front should lift north of the region Sunday night as the shortwave trough exits. Expect showers and thunderstorms to taper off Sunday evening, and end overnight. && .LONG TERM /MONDAY THROUGH THURSDAY/... KEY MESSAGES: - Unsettled weather Monday/Tuesday - Dry and less humid weather returns Wednesday through Friday ------------------------------------------------------------------- Ensembles agree on a 500mb closed low near the Arrowhead region of Minnesota at 12Z Monday, with a trough extending across the Upper Midwest. The trough advances across the Central Great Lakes by Tuesday and then over the Upper Ohio Valley by Tuesday night. Increasing southwest flow on Monday will provide moisture, with ascent provided by the advancing trough and an approaching front, producing another round of showers and thunderstorms. Another round of severe storms is a possibility, with ensembles indicating a chance of sufficient CAPE and deep- layer shear. A frontal passage could create another round of showers and storms on Tuesday. The trough exits during the Tuesday night/Wednesday period, with high pressure building into the region. This will result in dry weather from Wednesday through Friday, along with a slow warming trend. && .AVIATION /15Z FRIDAY THROUGH TUESDAY/... Currently, there are isolated showers and thunderstorms across the area. Due to the uncertainly of where these storms will develop, most terminals have a PROB30 and some have a TEMPO for thunderstorms. These storms could have some isolated strong gusts of greater than 30 knots. After the current round of storms, ceilings will quickly lower into MVFR/IFR except south and east of PIT (MGW/LBE). Lingering showers/storms will diminish near 00z as cigs lower into MVFR in western Pennsylvania and northern West Virginia. There is a lower probability for MVFR ceilings in eastern Ohio. Restrictions will continue overnight continue through much of Saturday morning. Dry conditions and gradually lifting ceilings are likely to occur across the region through Saturday afternoon. Outlook... Crossing low pressure will renew restriction potential with rain on Sunday, with additional waves of rain expected Monday into Tuesday. By Wednesday, dry conditions are expected to return to the region. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && SYNOPSIS...WM/CL NEAR TERM...CL SHORT TERM...CL LONG TERM...CL AVIATION...LL
Hazardous Weather Outlook National Weather Service Pittsburgh PA 341 PM EDT Fri Jun 6 2025 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>514-071945- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-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-Western Tucker-Eastern Tucker- 341 PM EDT Fri Jun 6 2025 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...This afternoon and tonight. Rounds of showers and thunderstorms are expected into this evening in the vicinity of a stationary front across the region. There is a Marginal Risk, or level 1 out of 5, for severe thunderstorms into the early evening. The main hazard is expected to be damaging wind gusts, although large hail is a possibility. In addition, heavy rainfall rates may lead to additional instances of flash flooding are possible into this evening, especially for areas that see multiple heavy thunderstorms. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Another round of severe weather is a possibility Sunday, with Marginal (1 out of 5) risk in effect for areas south and east of Pittsburgh currently, although this risk could expand. Locally heavy rainfall is possible Sunday as well. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. CL
Preliminary Local Storm Report
National Weather Service Pittsburgh PA
415 PM EDT Fri Jun 6 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0314 PM Flash Flood 3 S South New Castle 40.94N 80.34W
06/06/2025 Lawrence PA Dept of Highways
Flooding on UNION VALLEY RD both directions
between FLETCHER HILL RD, SAVANNAH RD and
SNAKE RUN RD. All lanes closed.
&&
LupoPreliminary Local Storm Report
National Weather Service Pittsburgh PA
419 PM EDT Fri Jun 06 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0417 PM Flash Flood 1 E Wilmerding 40.39N 79.80W
06/06/2025 Allegheny PA Public
Report of a vehicle submerged on Tri-Boro Expressway at
State Street near Turtle Creek.
&&
Event Number PBZ2508465
JFPreliminary Local Storm Report
National Weather Service Pittsburgh PA
420 PM EDT Fri Jun 6 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0250 PM Flash Flood 6 NW Portersville 40.98N 80.23W
06/06/2025 Lawrence PA Dept of Highways
Flooding on MT HERMAN CHURCH RD / BOAK RD /
MILL BRIDGE RD / ECKERT BRIDGE RD /
BREAKNECK BRIDGE RD both directions between
PRINCETON STATION RD and FREW MILL RD. All
lanes closed.
&&
LupoPreliminary Local Storm Report
National Weather Service Pittsburgh PA
426 PM EDT Fri Jun 06 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0425 PM Flash Flood 2 ENE Level Green 40.40N 79.69W
06/06/2025 Westmoreland PA 911 Call Center
911 Center reporting an occupied vehicle is trapped in
water on Pleasant Valley Road.
&&
Event Number PBZ2508467
JFPreliminary Local Storm Report
National Weather Service Pittsburgh PA
428 PM EDT Fri Jun 6 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0327 PM Flash Flood 1 S Municipality of Mon 40.41N 79.76W
06/06/2025 Allegheny PA Dept of Highways
Flooding on PA 48 both directions between
BROADWAY BL and MACBETH DR. All lanes
closed.
&&
LupoPreliminary Local Storm Report
National Weather Service Pittsburgh PA
441 PM EDT Fri Jun 06 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0439 PM Flash Flood 2 SW Export 40.40N 79.65W
06/06/2025 Westmoreland PA Public
Public reporting that a porion of School Road South
near the intersection of Boxcartown Road has been washed
away.
&&
Event Number PBZ2508470
JFThe Pittsburgh radar (KPBZ), 102 km away, was scanning. The volume nearest the first event began at 20:45 UTC.
4 flash flood. Local standard time, as filed.
The public reported that Tyrone Avery Road was under water due to heavy rain.
The public reported several roads closed due to flooding with vehicles stranded.
State official reported water over roadway on Cheat Valley Highway between St. George and Hannahsville.
County 911 call center reported flooding over the roadway at the intersection of N Mountaineer Hwy and Birds Creek Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2025Every state in 2025This day in weather historyWarnings in West Virginia, June 2025
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: 1278222, 1278230, 1278233, 1278236.