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Tornado in Calvert County, Maryland
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 Calvert County, Maryland, between 1950 and 2026, spread over 16 years.
April is the busiest month, with 4 of the recorded events. The last 20 years account for 7 events against 8 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 4.3% of the 438 tornado events recorded in Maryland; its 8.9 per 100 square miles compares with 4.5 statewide.
NCEI attributes 2 deaths in the county to tornadoes.
By rating: 10 at (E)F0, 6 at (E)F1, 3 at (E)F2, 0 at (E)F3, 0 at (E)F4, 0 at (E)F5. Tornadoes before 2007 carry the original Fujita rating.
Compared with Maryland
| Measure | Calvert County | Maryland | US |
|---|---|---|---|
| Tornado events since 1950 | 19 | 438 | 81,281 |
| Per 100 square miles | 8.9 | 4.5 | 2.3 |
| Per 10,000 residents | 2.0 | 0.7 | 2.4 |
| Deaths recorded | 2 | 9 | 6,410 |
| Busiest month | April | June | May |
By year
Seasonality
0Feb
1Mar
0Apr
4May
3Jun
3Jul
1Aug
4Sep
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 |
|---|---|---|---|---|---|---|---|
| 22 Jun 2026 | Tornado | EF0 | $100K | — | — | — | County |
| 4 Aug 2020 | Tornado | EF1 | — | — | — | — | County |
| 4 Aug 2020 | Tornado | EF0 | $250K | — | — | — | County |
| 21 Feb 2014 | Tornado | EF0 | — | $5K | — | — | County |
| 7 Aug 2012 | Tornado | EF0 | — | — | — | — | County |
| 28 Apr 2011 | Tornado | EF0 | $7K | — | — | — | County |
| 4 Jun 2008 | Tornado | EF0 | $400K | — | — | — | County |
| 28 Sep 2004 | Tornado | F0 | $40K | — | — | — | County |
| 28 Apr 2002 | Tornado | F2 | $10M | — | 2 | — | County |
| 28 Apr 2002 | Tornado | F1 | $5K | — | — | — | County |
| 22 May 2001 | Tornado | F0 | — | — | — | — | County |
| 13 May 2000 | Tornado | F1 | $20K | — | — | 1 | County |
| 21 Apr 2000 | Tornado | F1 | $210K | — | — | — | County |
| 13 Jul 1996 | Tornado | F1 | $120K | — | — | — | County |
| 17 Aug 1994 | Tornado | F0 | $500 | — | — | — | County |
| 8 May 1984 | Tornado | F0 | $25K | — | — | — | County |
| 13 Oct 1983 | Tornado | F2 | $25K | — | — | — | County |
| 5 Sep 1979 | Tornado | F1 | $250K | — | — | 1 | County |
| 27 Jun 1978 | Tornado | F2 | $250K | — | — | — | County |
Questions and answers
How many tornado events has Calvert 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 Calvert County?
22 Jun 2026 (Tornado, EF0). Records reach NCEI about 120 days after the month ends.
What was the most damaging tornado event recorded in Calvert County?
The tornado of 28 Apr 2002, with property damage estimated by NCEI at $10M; 2 deaths recorded.
How does Calvert County compare with Maryland for tornado?
8.9 events per 100 square miles against 4.5 statewide; the county holds 19 of the state's 438 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.