Slow moving thunderstorms resulted in 2-3 inches of rain over portions of eastern Allegheny County, PA in the afternoon on the 28th. Flash flooding lead to road closures along Thompson Run Road, Rodi Road and Route 48.
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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.
Slow moving thunderstorms resulted in 2-3 inches of rain over portions of eastern Allegheny County, PA in the afternoon on the 28th. Flash flooding lead to road closures along Thompson Run Road, Rodi Road and Route 48.
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 28, 12:23 PM EST, 4 hours 22 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pittsburgh PA 123 PM EDT Sun Jun 28 2026 .WHAT HAS CHANGED... Low but non-zero chance for isolated flash flooding south of Pittsburgh this afternoon and evening. Increasing confidence in dangerous heat mid to late this upcoming work week. Updated for the 18z TAF issuance. && .KEY MESSAGES... 1) Non-zero potential for heavy rain and flooding this afternoon/evening mainly south of Pittsburgh. 2) Increasing confidence in dangerous heat mid to late week, followed by potential for strong thunderstorms next weekend. && .DISCUSSION... KEY MESSAGE 1... A weak boundary that has been stalled across the southern portion of the forecast area the past few days lifts north slightly to around or just north of the I-70 corridor through this evening. Slow-moving showers and possibly a thunderstorm or two are already developing along the front. With this activity expected to stall and then shift back southeastward later this evening, some locations mainly across extreme SW PA and northern WV could see prolonged periods of moderate to, at times, heavy rainfall. As a result, there is some potential for localized flash flooding issues, especially in areas that have already received notable rainfall over recent days. Latest 1-hr FFG is roughly 0.9 to 1.25 inches over that area and 3-hr FFG is 1.5 to 2.25 inches. It is certainly feasible that a location or two could see these thresholds met if showers become more convective with additional daytime heating and given PWATs above the 90th percentile on this morning's 12Z PIT sounding. Still, coverage of the heavier rain rates is scattered and latest 1-hr QPE is estimated around 0.5 to 0.75 inches, so opting not to issue a Flood Watch at this time. This activity should wane after sunset with the loss of daytime heating. KEY MESSAGE 2... The story of the upcoming work week is hot weather areawide. A mid-level ridge of high pressure builds across the Ohio Valley and brings the hottest temperatures of the year so far, not record breaking with respect to afternoon highs but a high probability of breaking warm overnight lows at several sites Wednesday - Friday. The hottest weather still looks to be Wednesday and Thursday where widespread mid and upper 90s will be common, particularly in urban areas. Heat Advisories are likely to be issued across much of the area during that time as apparent temperatures climb to the 100F to 104F range. Guidance continues to be bullish on moisture and maintains upper 60s to mid 70s dewpoints even during afternoon hours, leading to heat indices climbing above 105F in some spots. While that is not out of the realm of possibility (particularly in urban areas located right along major rivers), historically speaking it is difficult for this region to see temperatures climb into the mid 90s with dewpoints that high (e.g., Pittsburgh has seen a temperature of 95F and dewpoint of 75F or greater only 4 times since 1952). Thus, the current line of thinking is that the modeled dewpoints are a tad high and will end up verifying in perhaps the mid 60s during peak heating each afternoon, which would help keep widespread apparent temperatures below 105F and thus preclude the need for Extreme Heat Watches/Warnings. In addition, heat risk will be in the major category (level 3 out of 4) with an extreme heat risk (level 4 out of 4) for the lower elevations Wednesday and Thursday. However, since 2005, Pittsburgh has not verified an extreme heat risk, so we will see if the dewpoint forecast trends a smidge lower, which will have an impact on this index. A quick refresher, NWS heat risk is a color-numeric based index that uses high resolution weather, climate, and CDC heat-health data to identify potentially dangerous heat. It is also good to point out that a big driver of impacts to people in heat waves are the overnight low temperatures. This is because people can't cool off at night especially those without air conditioners. If you have friends or family that are sensitive to heat, elderly, or without AC, please check on them throughout the week. Machine learning models are all pointing to an uptick in thunderstorm activity and potential severe weather Friday into next weekend across the region. Granted this is far down the road, but when we have a heat wave, typically there is a round of severe weather that ends it with the ridge flattening and the westerlies driving a weather system through. As of now, the probabilities are largely in the 15%-30% range. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... Fog has broken across the region and gradual improvements in CIGs are underway. A line of showers is slowly creeping NE at this time. Embedded thunderstorms are possible in this line later this afternoon. These showers and storms will continue to slowly move NEward before slowing, stalling and then shifting slowly to the SE this evening and overnight. Isolated heavy downpours are possible in this activity. Light and variable winds continue through the afternoon before abating overnight. Clouds are expected to clear this evening. Areas that see renewed rainfall likely greatly increase their chance for fog again tonight into tomorrow but chances of fog impacts look probable for many ports again already. Outlook... High pressure builds into the area by Mon, leading to higher temperatures and what appears most likely to be a dry forecast through at least the first half of the week. However, there is some guidance that continues to suggest daily thunderstorm chances linger, though coverage would be isolated and therefore the probability of impacts to area terminals remains low (roughly 10%). && .CLIMATE... Record High Temperatures for 06/30 (Tue): New Philadelphia OH Forecast: 95 Record: 93/1964 Record High Minimum Temperatures for 06/30 (Tue): New Philadelphia OH Forecast: 72 Record: 71/1991 Pittsburgh PA Forecast: 71 Record: 74/1933 Zanesville OH Forecast: 72 Record: 74/1934 Record High Temperatures for 07/01 (Wed): New Philadelphia OH Forecast: 96 Record: 96/1991 Record High Minimum Temperatures for 07/01 (Wed): Wheeling WV Forecast: 75 Record: 75/1901 Morgantown WV Forecast: 74 Record: 74/1901 New Philadelphia OH Forecast: 76 Record: 71/2014 Zanesville OH Forecast: 74 Record: 73/1913 Record High Temperatures for 07/02 (Thu): New Philadelphia Forecast: 96 Record: 95/1966 Pittsburgh PA Forecast: 95 Record: 97/1931 Record High Minimum Temperatures for 07/02 (Thu): Wheeling WV Forecast: 76 Record: 73/2018 Morgantown WV Forecast: 74 Record: 74/1901 New Philadelphia OH Forecast: 76 Record: 73/2018 Pittsburgh PA Forecast: 76 Record: 76/1903 Zanesville OH Forecast: 75 Record: 71/1903 Record High Minimum Temperatures for 07/03 (Fri): Wheeling WV Forecast: 76 Record: 77/1903 Morgantown WV Forecast: 75 Record: 74/1901 New Philadelphia OH Forecast: 77 Record: 71/1991 Pittsburgh PA Forecast: 76 Record: 76/1898 Zanesville OH Forecast: 76 Record: 78/1935 && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && DISCUSSION...Cermak/Shallenberger AVIATION...AK
Hazardous Weather Outlook National Weather Service Pittsburgh PA 103 PM EDT Sun Jun 28 2026 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>514-291715- 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- 103 PM EDT Sun Jun 28 2026 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...This afternoon and tonight. Isolated flash flooding will be possible primarily south of Pittsburgh this afternoon and evening as slow-moving showers and thunderstorms bring brief downpours to already saturated areas. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Heat will begin to build in the lowlands Tuesday through Friday. Highs will be in the lower to mid 90s and heat indices of 100 to 105 possible. A heat advisory will likely be needed for several days mid to late week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. TC
The Pittsburgh radar (KPBZ), 37 km away, was scanning. The volume nearest the first event began at 21:46 UTC.
3 flash flood. Local standard time, as filed.
State official reported a car stuck in floodwaters along Thompson Run Road.
State official reported water over Rodi Road.
Department of Highways reported that Route 48 was flooded at the intersection with Route 130.
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: 1355853, 1355854, 1355858.