Allegheny storm history
Storm events recorded in Allegheny, Pennsylvania between 1950 and 2025.
2,542
Total events
27
Tornadoes
442
Hail
619
Floods
14
Deaths
$454.2M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
At approximately 5:08 PM based off of radar coverage, a line of storms crossing the Pittsburgh area with very strong, damaging wind gusts caused a tree to fall and kill a man as he was walking back to his house in Ross Township.
A 3 month old male died after being left several hours in a hot car along Fort Couch Road in Upper Saint Clair, PA. The maximum high temperature at KAGC (11 miles from the incident) was 92F; heat index for the day was close to 100 degrees. Article: https://www.nbcnews.com/news/us…
A NWS storm survey found that 2.5 inches of rain fell in one hour in a very urbanized 4.8 sq mi watershed just east of downtown Pittsburgh. Severe flash flooding developed on Washington Blvd resulting in four fatalities and up to 15 water rescues. A mother and two daughters were …
A nearly stationary thunderstorm formed over the eastern part of Allegheny County during the evening of July 1. The storm dropped near 4 inches of rain in about 90 minutes over a 4 square-mile area. The resulting flash flood was centered in a small watershed in and near Pitcairn.…
A microburst with winds up to 85 MPH moved diagonally from northwest to southeast across Allegheny County, leaving a wide swath of damage in its wake. These winds produced an estimated $41 million in damage across the county. Over 125,000 people across the county had their power …
Numerous powerlines were reported down around the Ramblewood area.
Trees were reported down along Bakersfield Road, near the Pittsburgh North Golf Club.
Trees were reported down along Valencia Road.
Babcock Boulevard in Shaler Township was closed due to downed trees and powerlines.
A few small trunks and were snapped along Rachel Carson Trail.
The 911 Call Center reported flooded intersection near Squaw Run Road/Field Club Road and at the intersection Fairview Road and Old Mill Road. An emergency manager also reported rushing water near Woodland Farms Road. Fox Chapel Stone Supply INC worker says the store took on 2 ft…
The 911 Call Center has reported that a number of roads in southern Bethel Park have been flooded and/or impassable. This roads include: Glendale Drive, Logan Road, O'Neill Drive, Dashwood Drive (vehicle was stuck in water). Water entered the Trolley Stop Inn restaurant, cars in …
Heavy rain caused flash flooding in the Millvale area and much of the North Hills area of Pittsburgh as Girtys Run came out of it's banks. Over 900 homes were affected by the flooding as well as over 200 businesses. Infrasturcture owned by local municipalities sustained over 4 mi…
Ice jams moving down the Youghiogheny River produced minor flooding from Boston down to the McKeesport area. The movement of the ice itself caused the main problem, as it tore apart and destroyed 210 boat docks at the McKeesport Marina on its way out into the Monongahela River
Widespread flash flooding problems were reported across the county, with 51 of the county's 130 municipalities reporting some degree of storm impact. Of those 51 municipalities, 15 reported significant impact, including flooding of streets and basements, washed-away property and …
Winter Weather Winter Weather
Widespread snowfall, generally exceeding advisory criteria but falling short of warning criteria, fell across the county with amounts ranging from 3-5 inches and the highest total of 5 inches reported by the Public in Sewickley, 2 miles north of Bridgeville, and 3 miles north of …
Winter Storm Winter Storm
Widespread snow accumulation generally ranging from 4 to 8 inches in general was reported across the county with the highest total of 8.8 inches near Bethel Park.
A cold front crossing southwestern Pennsylvania during the afternoon was producing a line of showers with gusts between 35mph and 45mph at times along the frontal boundary. As the front was crossing southern Allegheny County, a tree fell onto utility lines which caused a utility …
Flash Flood Flash Flood
Report of flooding across River Road.
Flash Flood Flash Flood
Greater than a foot of water was reported to be flowing over Lebanon Church Road at the intersection with PA Route 885.
Flash Flood Flash Flood
Report of a foot of water over the road at the intersection of Bakerstown Road and Route 8 resulting in closure of Bakerstown Road. This extends about a half of a mile down the road on Bakerstown Road.
Flash Flood Flash Flood
Report of 6 to 9 inches of water flowing over Days Run Road as Days Run Creek is out of its banks.
Flash Flood Flash Flood
Report stating that North 3rd Street is flooded and impassable.
Thunderstorm Wind Thunderstorm Wind
Report of large limbs snapped which damaged a car on Haines Avenue.
Hail Hail
Flash Flood Flash Flood
Report of flooded roadway at the intersection of Yost Boulevard and Ardmore Boulevard.
Flash Flood Flash Flood
Flooding was reported on the lower portion of Campbells Run Road causing the road to be closed.
Flash Flood Flash Flood
Flooding was reported in the parking lot of Saint Margaret Hospital.
Flash Flood Flash Flood
Flooding reported outside of Hays Manor Community Center.
Flash Flood Flash Flood
Report of up to two feet of water along Washington Avenue.
Flash Flood Flash Flood
The public reported that Streets Run Road closed between Baldwin Road and Ganges Way due to flooding.
Flash Flood Flash Flood
State official reported road flooding at the 140 block of Harrison Road.
Flash Flood Flash Flood
State official reported that a creek is flooding the intersection of Glenn Avenue and Liberty Way.
Thunderstorm Wind Thunderstorm Wind
A tree branch that was larger than 3 inches in diameter was down across Pinewood Terrace.
Flash Flood Flash Flood
State official reported that a car was trapped in flood water on McKnight Rd.
Flash Flood Flash Flood
State official reported flooding at intersection of McMichael Road and Kenzie Drive.
Flash Flood Flash Flood
Trained spotter reported flooding on Freeport Road between Cheswick and Harmar.
Flash Flood Flash Flood
State official reported that highway 22/30 was flooded on the west bound side near the Imperial and Oakdale exit.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down on Vilsack Road.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 192 | 0 |
| 2024 | 182 | 7 |
| 2023 | 92 | 0 |
| 2022 | 80 | 0 |
| 2021 | 169 | 3 |
| 2020 | 103 | 1 |
| 2019 | 123 | 0 |
| 2018 | 106 | 0 |
| 2017 | 87 | 1 |
| 2016 | 57 | 0 |
| 2015 | 109 | 0 |
| 2014 | 70 | 0 |
| 2013 | 171 | 0 |
| 2012 | 122 | 1 |
| 2011 | 51 | 0 |
| 2010 | 41 | 0 |
| 2009 | 23 | 0 |
| 2008 | 27 | 0 |
| 2007 | 60 | 1 |
| 2006 | 16 | 0 |
| 2005 | 34 | 0 |
| 2004 | 37 | 0 |
| 2003 | 56 | 1 |
| 2002 | 39 | 0 |
| 2001 | 21 | 0 |
| 2000 | 33 | 0 |
| 1999 | 29 | 0 |
| 1998 | 78 | 2 |
| 1997 | 23 | 0 |
| 1996 | 57 | 0 |
| 1995 | 32 | 0 |
| 1994 | 19 | 0 |
| 1993 | 2 | 0 |
| 1992 | 12 | 1 |
| 1991 | 15 | 0 |
| 1990 | 12 | 0 |
| 1989 | 1 | 0 |
| 1988 | 7 | 0 |
| 1987 | 14 | 0 |
| 1986 | 11 | 0 |
| 1985 | 13 | 0 |
| 1984 | 6 | 0 |
| 1983 | 6 | 1 |
| 1982 | 1 | 0 |
| 1981 | 4 | 1 |
| 1980 | 8 | 1 |
| 1979 | 8 | 0 |
| 1978 | 3 | 0 |
| 1977 | 2 | 1 |
| 1976 | 5 | 1 |
| 1975 | 7 | 0 |
| 1974 | 11 | 0 |
| 1973 | 4 | 0 |
| 1972 | 1 | 0 |
| 1971 | 2 | 0 |
| 1970 | 8 | 1 |
| 1969 | 3 | 0 |
| 1968 | 4 | 0 |
| 1967 | 4 | 0 |
| 1966 | 1 | 0 |
| 1965 | 1 | 0 |
| 1964 | 1 | 0 |
| 1963 | 6 | 1 |
| 1962 | 1 | 0 |
| 1961 | 2 | 0 |
| 1960 | 1 | 0 |
| 1959 | 1 | 0 |
| 1958 | 5 | 0 |
| 1957 | 3 | 0 |
| 1956 | 3 | 1 |
| 1955 | 3 | 0 |
| 1954 | 1 | 1 |