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Tornado in Warren County, Pennsylvania
19 tornadoes events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Tornado.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 19 tornado events in Warren County, Pennsylvania, between 1950 and 2026, spread over 13 years.
May is the busiest month, with 6 of the recorded events. The last 20 years account for 10 events against 3 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.7% of the 1,091 tornado events recorded in Pennsylvania; its 2.1 per 100 square miles compares with 2.4 statewide.
By rating: 2 at (E)F0, 13 at (E)F1, 1 at (E)F2, 1 at (E)F3, 2 at (E)F4, 0 at (E)F5. Tornadoes before 2007 carry the original Fujita rating.
Compared with Pennsylvania
| Measure | Warren County | Pennsylvania | US |
|---|---|---|---|
| Tornado events since 1950 | 19 | 1,091 | 81,281 |
| Per 100 square miles | 2.1 | 2.4 | 2.3 |
| Per 10,000 residents | 5.0 | 0.8 | 2.4 |
| Deaths recorded | 0 | 83 | 6,410 |
| Busiest month | May | July | May |
By year
Seasonality
0Feb
0Mar
0Apr
2May
6Jun
4Jul
4Aug
0Sep
2Oct
1Nov
0Dec
0
Magnitude distribution
Enhanced Fujita scale wind estimates
- EF0/F0
- 65–85 mph (EF0)
- EF1/F1
- 86–110 mph (EF1)
- EF2/F2
- 111–135 mph (EF2)
- EF3/F3
- 136–165 mph (EF3)
- EF4/F4
- 166–200 mph (EF4)
- EF5/F5
- over 200 mph (EF5)
- Unrated
- no rating recorded
Tornado rating as recorded (Fujita scale before February 2007, Enhanced Fujita after).
Recorded events
All 19 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 14 Jun 2026 | Tornado | EF1 | $10K | — | — | — | County |
| 14 Apr 2019 | Tornado | EF2 | $1.0M | — | — | — | County |
| 2 Oct 2018 | Tornado | EF1 | $5K | — | — | — | County |
| 20 Apr 2017 | Tornado | EF0 | $10K | — | — | — | County |
| 17 Sep 2016 | Tornado | EF1 | $20K | — | — | — | County |
| 5 Jun 2016 | Tornado | EF1 | $100K | — | — | — | County |
| 28 May 2013 | Tornado | EF1 | $2K | — | — | — | County |
| 28 May 2013 | Tornado | EF0 | $10K | — | — | — | County |
| 26 Jul 2008 | Tornado | EF1 | — | — | — | — | County |
| 26 Sep 2007 | Tornado | EF1 | $75K | — | — | — | County |
| 17 Jun 2004 | Tornado | F1 | — | — | — | — | County |
| 28 Jul 2002 | Tornado | F1 | $35K | — | — | — | County |
| 9 Jul 1999 | Tornado | F1 | $150K | — | — | — | County |
| 22 Jun 1985 | Tornado | F1 | $25K | — | — | — | County |
| 31 May 1985 | Tornado | F4 | — | — | — | — | County |
| 31 May 1985 | Tornado | F3 | — | — | — | 8 | County |
| 31 May 1985 | Tornado | F4 | — | — | — | — | County |
| 31 May 1985 | Tornado | F1 | — | — | — | — | County |
| 15 Jul 1970 | Tornado | F1 | $25K | — | — | — | County |
Questions and answers
How many tornado events has Warren County had?
19 events in the NCEI Storm Events record between 1950 and 2026. Reporting of tornadoes became far more complete after 1996, so early decades undercount.
When was the last recorded tornado event in Warren County?
14 Jun 2026 (Tornado, EF1). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Warren County?
The tornado of 14 Apr 2019, with property damage estimated by NCEI at $1.0M.
How does Warren County compare with Pennsylvania for tornado?
2.1 events per 100 square miles against 2.4 statewide; the county holds 19 of the state's 1,091 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Tornado hub and the county page.