Beaver County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Beaver County: 3.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every storm within 100 miles

1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Claims by ZIP code

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Every earthquake of magnitude 4 or more within 50 miles

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Mapped landslides

Mapped by NASA (4), USGS Conterminous (1).

1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

More event types since 1996

Costliest events since 1996

1. Jul 5, 2007Flash Flood$10.0 million
   National Weather Service narrative

   A retired NWS employee reported flash flooding in Aliquippa, Monaca, and surrounding towns from rainfall of 3 to over 4 inches in 2 hours. Over 500 buildings and homes sustained damage across Beaver county with around 50 families displaced from homes.

2. Jan 19, 1996Flood, Beaver$9.6 million
   National Weather Service narrative

   The Allegheny and Monongahela Rivers meet at the Point in Pittsburgh to form the Ohio River. A tremendous amount of runoff and snowmelt, combined with the fact that the Monongahela and the Allegheny Rivers crested in phase, resulted in the maximum possible crest possible at the start of the Ohio River at Pittsburgh. The Monongahela River usually crests 4 to 8 hours earlier than the Allegheny River. The Ohio River at Pittsburgh crested at 34.6 feet, 9.6 feet above its 25 foot flood stage at 10 am on the 20th.In Beaver County, 257 homes were affected, 14 with major damage and 15 destroyed. At least 42 businesses were affected, 2 of which were destroyed. Commercial and industrial…

3. Jun 19, 1996Flash Flood$7.5 million
   National Weather Service narrative

   Flooding and mudslides were reported in Freedom. Some houses were evacuated. The ground gave way under one house in Center Township. Flooding was reported at Crow's Run in New Sewickley Township and along Elkhorn Run in Monaca. Widespread and prolonged thunderstorms with very heavy rain produced numerous storm total reports of 2 to 3 inches.Along Elkhorn Run, several autos were destroyed by the raging flood waters. Several homes were evacuated. Flood waters washed out a private bridge. Two other county-owned bridges were damaged or destroyed during the flood. A bridge and water main line was washed out in Rochester. Some homes were pushed off their foundations. Mudslides were…

4. Sep 14, 2008High Wind, Beaver$5.0 million
   National Weather Service narrative

   Low pressure from the remains of Hurricane Ike moved across central Ohio to Lake Erie on the evening of September 14th and produced very strong winds into the early morning of September 15th across eastern Ohio, northern West Virginia, and western Pennsylvania. Widespread damage to trees and power lines was reported across the region with power outages and damage to some structures from falling trees. Power was not restored to some rural areas for one week after the storm. At the peak of the storm more than 2 million homes were without power. For a period of about 8 hours, sustained winds during the storm were from 30 to 50 MPH, with gusts well over 60 MPH. The highest reported…

5. Sep 8, 2004Flood, Beaver$4.0 million
   National Weather Service narrative

   Rain from the remnants of Hurricane Frances began early on the 8th and ended by dawn on the 9th. By 540 PM EDT on 8th, many roads were closed by flooding countywide, including Center and Chippewa Townships. By 1030 PM on 8th, many roads flooded, especially in Darlington and Hopewell from Connoquenessing Creek. At this time, the Hopewell shopping plaza began to flood. By 9 AM EDT on 9th, in Bridgewater, 80 boats broke lose from their dock. Later, nearly 250 boats were seen piled up against a bridge. At time unknown, there were mud slides on Rte 18 in Potter Twp, and Rte 68 near Shippingport. By the end of the storm, 300 homes were damaged across the county; 35 roads were flooded,…

6. Sep 17, 2004Flood, Beaver$4.0 million
   National Weather Service narrative

   At 325 PM EDT on 17th, Rte 30, and all roads in Industry closed by flooding. Much damage along Rte 68 corridor in western part of county. Bridgewater and Glasgow flooded. Total of 625 structures damaged or destroyed, including 43 businesses, mainly in Hopewell Twp. Hundreds of runaway boats were lost, but 93 were recovered. Several marinas were ripped from the shore and broke up as they slammed into bridges, with numerous boats still attached. Roads partly washed out: Rtes 65, 288, 588, Hoenig Rd, Hartzell School Rd, Shady Rest Rd, Franklin Rd, Green Garden Rd. On the Ohio River, Montgomery Dam rose to flood stage (33 ft) at 4 AM EDT on 18th, crested 41.0 at 10 PM 18th, and fell…

7. May 22, 2004Flood, Beaver$3.0 million
   National Weather Service narrative

   At 11 AM EDT, Enon Valley report road flooding; roads in Darlington were flooded by the North Fork of the Little Beaver Creek; Routes 251 and 588 were flooded near Beaver Falls; other roads flooded near Big Beaver. By 5 PM EDT on 22nd, in Darlington, houses were flooded along the North Fork of Little Beaver Creek. Routes 51, 168, 351, and 551 flooded. At least 60 families had to be evacuated after their homes were surrounded by water. Some residents went to the rooftops to wait for rescue. By 930 PM on 22nd, Route 51 was still flooded and some houses were still surrounded by flood waters in or near Darlington. By 3 AM on 23rd, flood waters had receded somewhat, but Route 51 near…

8. Oct 6, 2024Thunderstorm Wind$2.5 million
   National Weather Service narrative

   Trees and wires were reported down across Patterson Township.

9. Oct 6, 2024Thunderstorm Wind$2.0 million
   National Weather Service narrative

   Reports of 1-inch tree limbs down and shingles blown off house.

10. Oct 6, 2024Thunderstorm Wind$2.0 million
    National Weather Service narrative

    Report of an uprooted tree, and tree a fell on a home near Oakhaven Drive.

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

103°FJul 16, 1988

All-time low

−22°FJan 19, 1994

Warmest night

77°F2 times, most recently Jul 23, 2010

Coldest day

−3°F2 times, most recently Jan 19, 1994

Wettest day

5.95 inSep 17, 2004

Snowiest day

23.6 inMar 13, 1993

Hottest year

2024mean 56.4°F

Coldest year

1976mean 48.0°F

Wettest year

201857.83 in

Driest year

196326.79 in

Snowiest season

82.0 in1950-51

Station Pittsburgh Asos (USW00094823), 1,119 ft elevation, 14.5 miles from the population centre. Daily records from 1948 to October 26, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

Neighbouring counties

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00094823.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.