Mercer storm history
Storm events recorded in Mercer, Pennsylvania between 1950 and 2025.
914
Total events
25
Tornadoes
150
Hail
104
Floods
9
Deaths
$40.3M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Tornado F5 Tornado
Tornado F3 Tornado
Starting about 7:54 PM, an F2 tornado touched down near Trout Island Road, east of Sharpsville. The tornado traveled northeast at 50 mph, crossed Route 18, then ripped into Clark. It crossed Shenango River Lake and tracked to New Hamburg, where it dissipated 8:02 PM. The tornado …
Mercer county emergency manager reported that interstate 79 was closed in both directions due to a multi-vehicle accident. At least 40 vehicles were involved in the crash with 20 individuals transported to local hospitals.
Winter Weather Winter Weather
A PennDot road sensor reported less than 999ft visibility along Interstate 80 and Interstate 79.
Winter Storm Winter Storm
Widespread snowfall fell across the county with amounts ranging from 3-6 inches and two totals exceeding warning criteria with 6.5 inches reported by the public 2 miles northeast of Fredonia and 7 inches reported by the public in Grove City.
Flash Flood Flash Flood
Report of flooding with water over the roadway at the intersection of Route 173 and Elliott Road resulting in closure of Route 173.
Thunderstorm Wind Thunderstorm Wind
Report of a tree down over Farkas Road.
Thunderstorm Wind Thunderstorm Wind
Report of a tree falling behind a building in an alleyway near Ormond Avenue.
Thunderstorm Wind Thunderstorm Wind
Report of a tree down along Walnut road that ripped powerlines off of a house.
Thunderstorm Wind Thunderstorm Wind
Report of a tree onto a house and through the roof along 3rd Street.
Thunderstorm Wind Thunderstorm Wind
Report of a tree down and blocking one lane of the road along Dutch Lane.
Thunderstorm Wind Thunderstorm Wind
Power lines were reported down on Bentley Ave.
Thunderstorm Wind Thunderstorm Wind
Wires were reported down in Greenville, PA.
Thunderstorm Wind Thunderstorm Wind
Tree and wires were reported down along Walnut Street.
Thunderstorm Wind Thunderstorm Wind
Power lines were reported down on Crestview Drive near Rutledge Road.
Thunderstorm Wind Thunderstorm Wind
A tree was down across the road.
Thunderstorm Wind Thunderstorm Wind
Wires were reported down.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down along Mercer Road and partially blocking a lane.
Thunderstorm Wind Thunderstorm Wind
Wires were reported down along Centertown Road.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down on North Good Hope Road.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down on West Market Street.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down at Village Park Drive.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down on Creek Road.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down across State Street that knocked power lines down.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down at Fourth Avenue and Reed Street.
Thunderstorm Wind Thunderstorm Wind
A utility pole was reported down on Stanton Street.
Thunderstorm Wind Thunderstorm Wind
Public reported a tree snapped near the intersection of Carlisle Road and Hilltop Road.
Thunderstorm Wind Thunderstorm Wind
A tree was downed, blocking the road near the intersection of Delaware Street and Algoma Street.
Hail Hail
Thunderstorm Wind Thunderstorm Wind
A tree was downed at the intersection of North Good Hope Road and Ray Road.
Thunderstorm Wind Thunderstorm Wind
Multiple trees were reported down along Hann Hill Road.
Thunderstorm Wind Thunderstorm Wind
Damage to a part of a fence, tree branches down, and a destroyed metal shed were reported.
Thunderstorm Wind Thunderstorm Wind
A tree was reported down across Sandy Hill Road at the I-80 on-ramp.
Thunderstorm Wind Thunderstorm Wind
There were numerous reports of tree damage on the south side of Hermitage, including a tree through a house window and trees into powerlines.
Thunderstorm Wind Thunderstorm Wind
Trees were uprooted, a house window was blown in, and a garage door was blown out.
Thunderstorm Wind Thunderstorm Wind
Less than 20 percent of a roof was blown off of a house, and a tow-behind trailer was moved 30 feet. Several trees and large branches were downed as well.
Thunderstorm Wind Thunderstorm Wind
Downed trees and power lines were observed just west of Sharon.
Thunderstorm Wind Thunderstorm Wind
Downed trees and power lines were reported in the area.
Thunderstorm Wind Thunderstorm Wind
Downed trees and power lines were reported in the area.
Thunderstorm Wind Thunderstorm Wind
Downed trees and power lines were reported in the area.
Thunderstorm Wind Thunderstorm Wind
Downed trees and power lines were reported in the area.
Cold/Wind Chill Cold/Wind Chill
The coldest conditions were noted during the morning of the 22nd. Temperatures dropped as low as -17F, with reported wind chill values in the -20F to -25F range.
Winter Weather Winter Weather
Five inches was the total at Grove City, with 4.2 at Mercer and three inches at Jamestown.
Winter Weather Winter Weather
Snow squall. Multi-vehicle accident on I-80 eastbound, 6 miles west of exit 15. Visibility below one-quarter mile was a contributing factor.
Winter Storm Winter Storm
Emergency manager reported 8 inches of snow in Jamestown, PA.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 41 | 0 |
| 2024 | 58 | 1 |
| 2023 | 38 | 0 |
| 2022 | 32 | 0 |
| 2021 | 23 | 1 |
| 2020 | 28 | 0 |
| 2019 | 60 | 2 |
| 2018 | 18 | 0 |
| 2017 | 23 | 0 |
| 2016 | 23 | 0 |
| 2015 | 16 | 1 |
| 2014 | 31 | 1 |
| 2013 | 33 | 0 |
| 2012 | 41 | 0 |
| 2011 | 48 | 0 |
| 2010 | 30 | 1 |
| 2009 | 14 | 0 |
| 2008 | 26 | 0 |
| 2007 | 24 | 1 |
| 2006 | 18 | 0 |
| 2005 | 18 | 0 |
| 2004 | 26 | 0 |
| 2003 | 42 | 1 |
| 2002 | 25 | 3 |
| 2001 | 7 | 0 |
| 2000 | 19 | 0 |
| 1999 | 23 | 0 |
| 1998 | 18 | 0 |
| 1997 | 11 | 0 |
| 1996 | 22 | 0 |
| 1995 | 16 | 0 |
| 1994 | 4 | 0 |
| 1993 | 3 | 0 |
| 1992 | 2 | 1 |
| 1991 | 7 | 0 |
| 1989 | 1 | 0 |
| 1988 | 3 | 0 |
| 1987 | 1 | 0 |
| 1986 | 5 | 1 |
| 1985 | 4 | 3 |
| 1983 | 2 | 0 |
| 1981 | 1 | 0 |
| 1980 | 2 | 1 |
| 1979 | 1 | 0 |
| 1978 | 2 | 1 |
| 1977 | 2 | 2 |
| 1976 | 1 | 0 |
| 1975 | 4 | 0 |
| 1974 | 1 | 0 |
| 1973 | 2 | 0 |
| 1972 | 1 | 1 |
| 1971 | 2 | 0 |
| 1970 | 3 | 0 |
| 1969 | 1 | 0 |
| 1968 | 1 | 0 |
| 1964 | 1 | 1 |
| 1957 | 1 | 0 |
| 1956 | 2 | 0 |
| 1954 | 2 | 2 |