NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Irwin, PA
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
9 tropical systems have passed within 75 miles of Irwin, Pennsylvania since 1851, 0 of them at hurricane strength; the most recent was Sandy in 2012. Since 1950, 74 tornadoes have touched down within 25 miles, 3 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 9
- Tornadoes
- 74
- EF3 or stronger
- 3
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
3 deaths in all
What the records show for Irwin
None of the 9 tropical systems was at hurricane strength as it passed Irwin; the strongest was an unnamed storm in 1896, a tropical storm with 64 mph winds when its centre passed 55 miles away. The record near Irwin begins with an unnamed storm in 1878; the most recent system was Sandy in 2012, a tropical storm 22 miles away. Of the 9 systems, 2 have come since 2000. Of the 794 Pennsylvania cities on this site, 79% have more tropical storms and hurricanes within 75 miles than Irwin. The strongest of the 74 tornadoes within 25 miles was an F4 on June 3, 1980; its path came within 20 miles. The deadliest, an F3 on August 3, 1963, killed 2 people. Of the 74, 8 had paths within 5 miles of the city centre, and 38 have come since 2000. June has had the most tornadoes, 24. The most recent tornado was on May 21, 2025. Irwin has more tornadoes within 25 miles than 74% of the 794 Pennsylvania cities. Hail has been reported within 10 miles 167 times since 1973, with stones up to 2.5 inches (tennis ball size). Irwin has more hail reports within 10 miles than 96% of the 794 Pennsylvania cities.
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Tropical storms and hurricanes near Irwin
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 2012 | SandyOct 30 | 22 mi | Tropical storm (41 mph) | Category 3 |
| 2003 | IsabelSep 19 | 11 mi | Tropical storm (45 mph) | Category 5 |
| 1989 | HugoSep 22 | 65 mi | Tropical storm (43 mph) | Category 5 |
| 1979 | FredericSep 14 | 3 mi | Tropical storm (39 mph) | Category 4 |
| 1928 | Unnamed 1928 stormSep 20 | 66 mi | Tropical storm (43 mph) | Category 5 |
| 1915 | Unnamed 1915 stormOct 1 | 10 mi | Tropical storm (40 mph) | Category 4 |
| 1896 | Unnamed 1896 stormSep 30 | 55 mi | Tropical storm (64 mph) | Category 3 |
| 1888 | Unnamed 1888 stormAug 21 | 39 mi | Tropical storm (49 mph) | Category 3 |
| 1878 | Unnamed 1878 stormSep 13 | 27 mi | Tropical storm (52 mph) | Category 2 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Irwin: a hurricane's worst winds sit within a few dozen miles of its centre, and inland cities are usually past that.
Tornadoes within 25 miles of Irwin
By decade
- 2020s21
- 2010s12
- 2000s5
- 1990s12
- 1980s7(1 EF3+)
- 1970s10(1 EF3+)
- 1960s3(1 EF3+)
- 1950s4
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 3, 1980 | F4 | 20 mi | 11.8 mi | 0 / 140 |
| Aug 3, 1963 | F3 | 9 mi | 0.1 mi | 2 / 70 |
| Jul 11, 1976 | F3 | 11 mi | 11.8 mi | 1 / 17 |
| Jun 26, 2024 | EF2 | 6 mi | 10.84 mi | 0 / 0 |
| May 11, 2024 | EF2 | 13 mi | 5.84 mi | 0 / 0 |
| Oct 2, 2018 | EF2 | 21 mi | 1.56 mi | 0 / 0 |
| Mar 23, 2011 | EF2 | 3 mi | 8.96 mi | 0 / 0 |
| Aug 15, 1997 | F2 | 21 mi | 3.5 mi | 0 / 2 |
| May 22, 1983 | F2 | in town | 38 mi | 0 / 10 |
| Jun 3, 1980 | F2 | 19 mi | 4.9 mi | 0 / 0 |
| May 12, 1980 | F2 | 18 mi | 2.2 mi | 0 / 0 |
| Jun 4, 1975 | F2 | 2 mi | 45.3 mi | 0 / 0 |
The strongest 12 of 74, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Irwin
The Storm Prediction Center has 167 hail reports within 10 miles of Irwin since 1973, made on 74 separate days. Of these, 84 were 1 inch across or larger, and 4 reached 2 inches. The largest, 2.5 inches (tennis ball size), fell on April 14, 1984. The most recent report is from August 17, 2024. July has the most reports, 51.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Irwin
The nearest NOAA station with 1991–2020 climate normals is Mckeesport, PA, 8 miles west of Irwin at 740 feet. July is the warmest, with an average high of 85°F and low of 61°F; January is the coolest, at 39°F and 21°F. June is the wettest at 5.0 inches of precipitation on average and February the driest at 2.5 inches; the year adds up to 42.4 inches over 91 days with at least a tenth of an inch. Highs reach 90°F on about 14 days a year, almost all from June to September. Lows fall below freezing on about 124 nights a year. That 42.4 inches is more than at 43 of the 148 Pennsylvania stations used on this site (29%). Jeannette, 5 miles east, has its own station (Mt Pleasant, PA): 44.0 inches a year, 1.6 more than here, and a July average high of 82°F against 85°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 39 | 21 | 3.0 | 8 |
| Feb | 42 | 22 | 2.5 | 6 |
| Mar | 51 | 29 | 3.2 | 7 |
| Apr | 64 | 38 | 3.8 | 9 |
| May | 74 | 47 | 4.0 | 9 |
| Jun | 81 | 57 | 5.0 | 9 |
| Jul | 85 | 61 | 4.1 | 8 |
| Aug | 83 | 60 | 3.5 | 7 |
| Sep | 77 | 53 | 3.5 | 6 |
| Oct | 65 | 42 | 3.2 | 7 |
| Nov | 53 | 32 | 3.0 | 7 |
| Dec | 43 | 25 | 3.6 | 8 |
| Year | 63 | 40 | 42.4 | 91 |
Averages for 1991–2020 at Mckeesport, PA (740 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Irwin
Since 1996, the National Weather Service has logged 647 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Irwin: 461 thunderstorm wind reports, 139 flash floods, 36 floods, 10 heavy rain events and 1 lightning strike. They killed 1 person and injured 9, and the NWS estimated $16.4 million in property and crop damage. The strongest thunderstorm gust on record here was 72 mph, on August 25, 2023. July has had the most flash floods, 53 of 139. Of the 788 Pennsylvania cities on this site with a flash flood on record, 703 have had fewer than Irwin.
March 28, 2020: flash flood 3 miles from the centre of Irwin — 1 killed.
NWS: “One man died when he was swept into a storm drain. The incident happened in Sewickley Township near Clay Pike.”
September 28, 2019: thunderstorm wind 7 miles from the centre of Irwin — 6 injured.
July 26, 2002: thunderstorm wind 8 miles from the centre of Irwin — 1 injured, $200,000 damage.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Flood insurance policyholders in Irwin's ZIP code 15642 have filed 69 claims with the National Flood Insurance Program since 1978, and were paid $561,000 for buildings and contents, in the dollars of each year. The year with the most claims was 2009, with 16. 4% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 553 Pennsylvania cities on this site with 10 or more claims, 320 have fewer than Irwin.
Westmoreland County, which includes Irwin, has been named in 20 federal disaster or emergency declarations since 1971, 13 of them major disasters (by incident: 6 floods, 5 snowstorms, 3 hurricanes, 3 severe storms). The latest major disaster declaration was Covid-19 Pandemic, on March 30, 2020. FEMA's National Risk Index gives Westmoreland County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively High for inland flooding, strong wind and lightning; Relatively Moderate for hail; Relatively Low for hurricanes, tornadoes and heat waves. It models the county's expected loss from all 18 hazards it covers at $76.3 million a year, the 14th highest of 67 Pennsylvania counties; of the hazards above, the largest share, $65.9 million (86%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. 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).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets 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).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Irwin
- Harrison City, PA4 mi
- Trafford, PA5 mi
- Jeannette, PA5 mi
- White Oak, PA5 mi
- North Versailles, PA6 mi
- East Mc Keesport, PA6 mi
- Pitcairn, PA6 mi
- Wilmerding, PA7 mi
- Mckeesport, PA7 mi
- Monroeville, PA8 mi
- Duquesne, PA8 mi
- Turtle Creek, PA8 mi
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