Scattered thunderstorms formed in an unstable air mass on the 28th. The storms took advantage of dry air aloft to create downburst conditions in a few cases, producing reports of wind damage in Allegheny, Lawrence, and Westmoreland Counties.
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.
Scattered thunderstorms formed in an unstable air mass on the 28th. The storms took advantage of dry air aloft to create downburst conditions in a few cases, producing reports of wind damage in Allegheny, Lawrence, and Westmoreland Counties. Also, one to two inches of rain on already wet ground created flooding issues in portions of western Lawrence County.
A lull in activity occurred during the night and into the following morning. Later in the day, renewed instability, plus residual outflow boundaries from previous convection, helped to expand thunderstorm coverage during the evening of the 29th and into the early morning hours of the 30th ahead of a sagging cold front. Steep lapse rates and dry air aloft supported many instances of thunderstorms with damaging wind. Damage was mainly to trees, but there were a few instances of roof damage in Washington County. Hail was much less widespread, but a few reports of dime to quarter sized hail were received.
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, 2:20 PM EST, 4 hours 5 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 320 PM EDT Fri Jun 28 2019 .SYNOPSIS... Isolated thunderstorms are possible this afternoon with daytime heating. Better rain chances are expected Saturday with a crossing cold front. && .NEAR TERM /THROUGH TONIGHT/... A few isolated thunderstorms have developed in the area over the last hour. Given slightly cooler than forecast sfc temperatures combined with warmer air aloft, expect that convection this afternoon will be more limited in coverage and severity than yesterday. However, dry air aloft will keep downburst potential in the forecast for any stronger storms that do form. Convection should quickly dissipate this evening with the loss of daytime heating. Dry weather and above-average temperatures will continue tonight. && .SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/... An upper shortwave trough in NW flow aloft and an associated sfc cold front will advance to the SE across the region tomorrow. Scattered showers and thunderstorms are expected in the warm sector, with intensification along the front during the afternoon hours. Sufficient instability, steep lapse rates, and dry air aloft will be supportive of isolated severe storms with damaging wind. The cold front should maintain isolated to scattered shower/storm chances through early Sunday morning, primarily south of Pittsburgh. Dry weather will return areawide with building high pressure and dry advection in NW flow. Humidity and above-average temperatures will continue until frontal passage. && .LONG TERM /MONDAY THROUGH THURSDAY/... Monday should remain mostly dry under ridging. However, the ridge will slide southwards on Tuesday and remain across the Southeast US through the end of the period, placing our area on the northern periphery of the ridge. A series of shortwaves in northwest flow aloft will maintain periodic shower and thunderstorm chances for much of the week. Temperatures will remain slightly above seasonal average through the week. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... VFR conditions are expected through the TAF period. Daytime heating will lead to afternoon cu and isolated tstms. Coverage will be limited due to lack of upper level support and warming mid levels, precluding a TAF mention. If any storm develops, gusty and erratic winds plus brief vsby restrictions will be possible. Incoming shortwave will increase mid-level cloud coverage overnight, with a sfc cold front aiding storm initiation by Sat afternoon. Best chances for terminal impacts likely after TAF period. .Outlook... Shower/tstm restrictions are possible Sat aftn/eve through Sun morning with a crossing cold front. Another disturbance returns shower/tstm restriction potential Tue. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook...CORRECTED National Weather Service Pittsburgh PA 455 AM EDT Fri Jun 28 2019 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-290745- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison- Jefferson OH-Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango- Forest-Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny- Armstrong-Indiana-Washington-Greene-Westmoreland-Westmoreland Ridges- Fayette-Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion- Monongalia-Ridges of Eastern Monongalia and Northwestern Preston- Preston-Eastern Preston-Western Tucker-Eastern Tucker- 455 AM EDT Fri Jun 28 2019 This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Isolated severe thunderstorms are possible with a crossing cold front Saturday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
Special Weather Statement National Weather Service Pittsburgh PA 237 PM EDT Fri Jun 28 2019 OHZ041-281900- Columbiana- 237 PM EDT Fri Jun 28 2019 ...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT NORTHWESTERN COLUMBIANA COUNTY... At 237 PM EDT, a strong thunderstorm was located near Minerva, or 11 miles southwest of Salem, moving east at 15 mph. Wind gusts up to 45 mph are possible with this storm. Locations impacted include... Hanoverton... New Garden... Guilford Lake State Park... North Georgetown... Winona... Homeworth... LAT...LON 4076 8108 4083 8108 4088 8085 4073 8083 TIME...MOT...LOC 1837Z 264DEG 12KT 4080 8102
Special Weather Statement National Weather Service Pittsburgh PA 322 PM EDT Fri Jun 28 2019 PAZ021-281945- Allegheny- 322 PM EDT Fri Jun 28 2019 ...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT NORTH CENTRAL ALLEGHENY COUNTY... At 322 PM EDT, a strong thunderstorm was located over Franklin Park, moving east at 10 mph. Wind gusts up to 45 mph are possible with this storm. Locations impacted include... Ross Township... McCandless Township... Franklin Park... Shaler Township... Hampton Township... O'hara Township... Wexford... Fox Chapel... Gibsonia... Bradfordwoods... Sewickley Heights... Sewickley Hills... LAT...LON 4056 8013 4063 8013 4067 7990 4052 7989 TIME...MOT...LOC 1922Z 272DEG 11KT 4059 8006
Special Weather Statement National Weather Service Pittsburgh PA 348 PM EDT Fri Jun 28 2019 PAZ014-021-282015- Butler-Allegheny- 348 PM EDT Fri Jun 28 2019 ...AN AREA OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT SOUTH CENTRAL BUTLER AND NORTH CENTRAL ALLEGHENY COUNTIES... At 348 PM EDT, strong thunderstorms were clustered over Cranberry, moving east at 10 mph. Wind gusts up to 45 mph are possible with this storm. Locations impacted include... Cranberry... Wexford... Seven Fields... Gibsonia... Mars... Bradfordwoods... Valencia... Pine Township... Warrendale... LAT...LON 4064 8010 4072 8010 4073 7991 4062 7993 TIME...MOT...LOC 1948Z 273DEG 7KT 4070 8009
Special Weather Statement National Weather Service Pittsburgh PA 351 PM EDT Fri Jun 28 2019 PAZ014-021-073-282015- Butler-Westmoreland-Allegheny- 351 PM EDT Fri Jun 28 2019 ...AN AREA OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT SOUTH CENTRAL BUTLER...NORTHEASTERN ALLEGHENY AND NORTHWESTERN WESTMORELAND COUNTIES... At 351 PM EDT, strong thunderstorms were clustered near Gibsonia, or 9 miles northeast of McCandless Township, moving east at 5 mph. Wind gusts up to 45 mph are possible with this storm. Locations impacted include... Plum... Hampton Township... New Kensington... Lower Burrell... Harrison Township... Arnold... Tarentum... Springdale... Brackenridge... Cheswick... Russellton... Curtisville... LAT...LON 4058 7994 4068 7992 4068 7972 4053 7975 TIME...MOT...LOC 1951Z 276DEG 6KT 4066 7988
Special Weather Statement National Weather Service Pittsburgh PA 425 PM EDT Fri Jun 28 2019 PAZ014-020-021-282100- Butler-Beaver-Allegheny- 425 PM EDT Fri Jun 28 2019 ...AN AREA OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT EAST CENTRAL BEAVER...SOUTHWESTERN BUTLER AND NORTH CENTRAL ALLEGHENY COUNTIES... At 425 PM EDT, strong thunderstorms were clustered over Cranberry, moving east at 15 mph. Wind gusts up to 45 mph are possible with this storm. Locations impacted include... Cranberry... Seven Fields... Gibsonia... Evans City... Mars... Valencia... Callery... Pine Township... LAT...LON 4070 8017 4076 8016 4078 7996 4063 7998 TIME...MOT...LOC 2025Z 285DEG 13KT 4072 8009
The Pittsburgh radar (KPBZ), 24 km away, was scanning. The volume nearest the first event began at 23:25 UTC.
29 thunderstorm wind, 5 flash flood, 5 hail. Local standard time, as filed.
The county DOT office reported single trees down on Talley Cavey Road and Wildwood Road. Time of occurrence was estimated from radar.
A 911 dispatcher reported that trees and power lines were down just east of Mount Jackson.
A social media user reported that large trees were blown down on Brewster Road.
A 911 dispatcher reported that Cover Road was flooded near the railroad crossing.
The county 911 dispatch center reported that the intersection of Route 224 and Old Youngstown Road was flooded.
A local fire department reported significant flooding between Edinburg and Hillsville.
A social media user reported that trees were blown down just west of Crafton.
Power lines were blown down at the intersection of Route 136 and Wooster Street, according to county 911 dispatchers.
The broadcast media reported that water was flowing down Route 136 in town.
A social media user reported that trees were blown down, and also shared a picture of their trampoline, which had been thrown across the yard.
The broadcast media reported that Market Street was flooded.
Hail covered the golf course at Strawberry Ridge.
A social media user reported a mix of dime and quarter-sized hail.
Power lines were reported to be blown down by a 911 dispatcher.
According to the county 911 call center, power lines were blown down in Zelienople.
A 911 dispatcher reported that trees were blown down near the intersection of Love Road and State Route 949. Time of occurrence was estimated from radar.
Trees were blown down in Leetsdale, according to county 911 dispatchers.
A social media user reported that several trees were blown down in Walter Panek Park.
A trained spotter reported that several trees were blown down in Bell Acres.
A county 911 dispatcher reported that a tree was down and partially blocking State Route 65.
A social media user stated that trees were downed between Stahlstown and Ligonier.
A county 911 dispatcher reported that trees were blown down along Redds Mill Road in Fallowfield Township.
Trees and wires were blown down and blocked Bentleyville Road, according to a 911 dispatcher.
A 911 dispatcher stated that trees were down on the 400 block of Rankin Road.
Trees were felled on Washington Pike, as state by county 911 personnel.
Wire poles were blown down near 238 Meadowcroft Road according to county 911 personnel.
A trained spotter stated that trees were blown down at Linden Hall Golf Course.
The county 911 call center indicated that trees were blown down at the intersection of Old 71 and Brewer Street.
County 911 dispatchers reported that trees were blown down along Fallen Timber Road.
The 911 call center reported that trees were down at the intersection of Sugar Run Road and Washington Pike.
A roof was blown off of a house on Dry Ridge Road, according to the county 911 call center.
The public reported that a roof was blown off of a house in West Alexander.
A 911 dispatcher stated that trees were down on Gashel Road in Donegal Township.
The public reported roof damage to a home in Claysville.
Wire poles were blown down near 100 Ridge Church Road, according to a 911 dispatcher.
The public reported trees and power lines down in Luzerne.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2019Every state in 2019This day in weather historyWarnings in Pennsylvania, June 2019
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: 834604, 834605, 834606, 834607, 834608, 834609, 834610, 834611, 834612, 834613, 834614, 834615, 834616, 834617, 834618, 834619, 834620, 834621, 834622, 834623, 834624, 834625, 834626, 834627, 834628, 834629, 834630, 834631, 834632, 834633, 834634, 834635, 834636, 834637, 834638, 834639, 834640, 834641, 834642.