Indiana County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Indiana County: 0.
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.

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 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.

Costliest events since 1996

1. Jan 19, 1996Flash Flood$2.0 million
   National Weather Service narrative

   Major damage occurred along Crook Creek and Two Lick Creek in Homer City, Clymer, and Creekside. Approximately 300 homes sustained substantial basement flooding. Ten homes had water into the first floor. A few businesses were damaged. Roads, bridges, and a water treatment plant were also damaged.

2. Sep 17, 2004Flood, Indiana$1.5 million
   National Weather Service narrative

   At 630 PM EDT on 17th, Curry Run overflowed and closed Rte 422 near Shelocta (newspaper). By 720 PM, there was widespread road and stream flooding. Flood waters swept away 8 empty campers at a camp ground between Shelocta and Elderton. 845 PM, numerous roads closed by flood. At one house in Centre Twp, basement wall caved in. Rte 954 near Beyer was washed out. Rte 4018 near Smicksburg closed when Mahoning Dam overflowed. Indiana had 3.5 inches of rain. By 1050 PM, Clymer flooded and people were evacuated. 150 people had to be evacuated countywide. Shelocta hit hard. Total of 339 structures damaged or destroyed, 40 of them were businesses. (IVAN)

3. Apr 28, 2002Tornado$750,000
   National Weather Service narrative

   A storm spawning two separate tornadoes passed over southern Armstrong County, continuing eastward into Indiana County. The first tornado, an F0, touched down at approximately 2:45 PM EST just south of the town of Spring Church in Armstrong County. It traveled east about 3 miles before crossing into Indiana County approximately 1 mile east of Maysville at 2:52 PM EST. This tornado continued traveling to the east for another mile, finally dissipating near the community of Iselin at around 2:55 PM EST. The maximum estimated winds with this tornado were about 70 MPH.Damage from this first tornado included numerous trees which were toppled or snapped. A small steeple was toppled, and…

4. Jan 9, 2024High Wind, Indiana County$250,000
   National Weather Service narrative

   Wind gusts of up to 51 MPH were noted at Indiana Airport, However, the call center reported that numerous power lines were blown down across the county during the day. Specific examples were noted at Blairsville, Homer City, Indiana, and Marion Center.

5. Apr 28, 2002Tornado$250,000
   National Weather Service narrative

   An F1 tornado touched down near the small town of Deckers Point (about 7 miles northeast of Clymer) at 3:10 PM EST. It traveled about 2 miles before dissipating at 3:13 PM EST. The maximum estimated winds were about 90 MPH.The tornado blew the doors off of one house and caused the opposite wall to push out, while also lifting up the roof. A 100-year old house lost its entire roof, which was blown off and deposited about 150 yards away. Additionally, the house's garage was completely destroyed with cinder blocks thrown nearly 100 yards. There were numerous trees, power lines, and telephone poles downed. Sheds and small garages were damaged or destroyed, and one wooden garage was…

6. Feb 12, 2009High Wind, Indiana$200,000
   National Weather Service narrative

   A powerful cold front moved across the Ohio Valley on the evening of the 11th as strong low pressure moved north across the Great Lakes. A convective line along the cold front produced widespread damage across eastern Ohio, western Pennsylvania, northern West Virginia, and Garrett county Maryland with thunderstorm wind gusts of 60 to 70 MPH and a peak wind gust of 92 MPH at Allegheny County Airport near Pittsburgh. High winds gusting to 60 MPH behind the front in a strong pressure gradient produced wind damage across the entire region into midday on the 12th. In all across eastern Ohio, western Pennsylvania, northern West Virginia and Garrett county Maryland over one half million…

7. Jul 19, 1996Tornado$200,000
   National Weather Service narrative

   A tornado touched down in Jefferson County and traveled southeast into northeast Indiana County, the tornado continued into the State Game Lands and exited Indiana County 4 miles north-north east of Glen Campbell and then entered Clearfield County. The tornado's path was 200 feet wide at its greatest width in Indiana County.Just some tree damage occurred in Jefferson County. The tornado strengthened and caused greater damage in Indiana County. Just east of Rossiter, the tornado tore the roof off of a barn. A child, playing outside, sought shelter in the barn. The roof lifted off and three of the four walls collapsed. The child was not injured. A horse that was inside the barn was…

8. Jun 25, 2006Flash Flood$200,000
   National Weather Service narrative

   Widespread flooding of roads and of at least 16 basements, in Marion Center, East Mahoning Twp, and northern Indiana County. Skywarn spotter in Marion Center reported 2.5 inches of rain from 10 AM EDT to 1230 PM EDT; 4 inches by 130 PM; 4.5 inches by 3 PM; and finally 4.6 inches at 7 PM EDT. By 3 PM EDT, numerous roads were reported flooded in East Mahoning Twp. By 7 PM, Little Mahoning Creek overflowed and flooded Route 119 between Marion Center and the northern border of Indiana County, and several vehicles in a parking lot were submerged. By 720 PM EDT, Canoe Creek flooded Juneau. By 815 PM EDT, near Mottarns Mill in North Mahoning Twp, East Creek Rd was washed out; it…

9. Jul 26, 2012Flood$150,000
   National Weather Service narrative

   Law enforcement reported roads flooded and some water in businesses in Indiana Borough.

10. May 25, 2004Hail$100,000
    National Weather Service narrative

    Many new cars at a dealership were damaged by this very large hail.

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

99°FAug 17, 1988

All-time low

−26°FFeb 2, 1961

Warmest night

72°F5 times, most recently Jul 18, 2005

Coldest day

−6°FJan 19, 1994

Wettest day

5.27 inJul 20, 1977

Snowiest day

21.0 inJan 5, 1994

Hottest year

1998mean 53.2°F

Coldest year

1958mean 47.5°F

Wettest year

201868.46 in

Driest year

196333.21 in

Snowiest season

107.6 in1977-78

Station Indiana 3 Se (USC00364214), 1,102 ft elevation, 1.5 miles from the population centre. Daily records from 1946 to October 23, 2026; 97.7% 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 USC00364214.
• 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.