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Tornado in Aroostook County, Maine
30 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.
Aroostook County, Maine, has 30 tornado events in the NCEI record since 1950, with at least one in 19 different years.
July is the busiest month, with 9 of the recorded events. The last 20 years account for 12 events against 7 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 21.4% of the 140 tornado events recorded in Maine; its 0.4 per 100 square miles compares with 0.5 statewide.
NCEI attributes 1 death in the county to tornadoes.
By rating: 11 at (E)F0, 15 at (E)F1, 3 at (E)F2, 0 at (E)F3, 0 at (E)F4, 0 at (E)F5 and 1 unrated. Tornadoes before 2007 carry the original Fujita rating.
Compared with Maine
| Measure | Aroostook County | Maine | US |
|---|---|---|---|
| Tornado events since 1950 | 30 | 140 | 81,281 |
| Per 100 square miles | 0.4 | 0.5 | 2.3 |
| Per 10,000 residents | 4.5 | 1.0 | 2.4 |
| Deaths recorded | 1 | 1 | 6,410 |
| Busiest month | July | July | May |
By year
Seasonality
0Feb
0Mar
0Apr
0May
6Jun
7Jul
9Aug
5Sep
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 30 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 |
|---|---|---|---|---|---|---|---|
| 5 Aug 2017 | Tornado | EF1 | — | — | — | — | County |
| 18 Jul 2016 | Tornado | EF0 | — | — | — | — | County |
| 26 May 2014 | Tornado | EF0 | — | — | — | — | County |
| 9 Jun 2011 | Tornado | EF0 | — | — | — | — | County |
| 8 Jun 2011 | Tornado | EF0 | — | — | — | — | County |
| 8 Jun 2011 | Tornado | EF0 | — | — | — | — | County |
| 26 Jun 2009 | Tornado | EF0 | — | — | — | — | County |
| 31 May 2009 | Tornado | EF1 | — | — | — | — | County |
| 31 May 2009 | Tornado | EF1 | — | — | — | — | County |
| 31 May 2009 | Tornado | EF0 | — | — | — | — | County |
| 24 May 2009 | Tornado | EF1 | — | — | — | — | County |
| 15 Jul 2007 | Tornado | EF0 | — | — | — | — | County |
| 23 Jul 2002 | Tornado | F0 | — | — | — | — | County |
| 4 Jul 2002 | Tornado | F1 | — | — | — | — | County |
| 24 Jul 2001 | Tornado | F1 | — | — | — | 1 | County |
| 28 Jul 1997 | Tornado | F0 | — | — | — | — | County |
| 1 Jul 1994 | Tornado | F0 | $50K | — | — | — | County |
| 18 Jun 1994 | Tornado | F1 | $500K | — | — | 2 | County |
| 18 Jun 1994 | Tornado | F1 | $50K | — | — | — | County |
| 12 Oct 1971 | Tornado | F1 | $250 | — | — | — | County |
| 1 Jul 1971 | Tornado | F1 | $250K | — | — | — | County |
| 21 Sep 1965 | Tornado | F1 | $3K | — | — | — | County |
| 19 May 1963 | Tornado | — | $3K | — | — | — | County |
| 18 Jul 1961 | Tornado | F1 | $25K | — | — | — | County |
| 29 Jun 1961 | Tornado | F1 | $25K | — | — | — | County |
| 29 Aug 1960 | Tornado | F1 | $25K | — | — | — | County |
| 15 Aug 1959 | Tornado | F1 | $25K | — | — | 1 | County |
| 15 Aug 1958 | Tornado | F2 | $25K | — | — | — | County |
| 16 Sep 1957 | Tornado | F2 | $3K | — | — | — | County |
| 11 Aug 1954 | Tornado | F2 | $25K | — | 1 | 1 | County |
Questions and answers
How many tornado events has Aroostook County had?
30 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 Aroostook County?
5 Aug 2017 (Tornado, EF1). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Aroostook County?
The tornado of 18 Jun 1994, with property damage estimated by NCEI at $500K.
How does Aroostook County compare with Maine for tornado?
0.4 events per 100 square miles against 0.5 statewide; the county holds 30 of the state's 140 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.