302
Recorded events
0
Direct deaths
2
Direct injuries
$1.9M
Property damage
Thunderstorm Wind in Calvert County, Maryland: 302 recorded events between 1960 and 2026. The strongest on record measured 90. That places the county #444 nationally and #13 statewide for this hazard.
Decade by decade
Thunderstorm Wind in Calvert County, Maryland: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for thunderstorm wind in Calvert County is the 2010s, when 131 of the county's 302 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Calvert County archive, thunderstorm wind makes up 67.6% of all recorded severe weather across 9 hazard types. Nationally the county sits at #444 for this hazard and #13 within Maryland, putting it in the 85.9 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for thunderstorm wind in Calvert County with 101 recorded events, while Sep is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Aug 1, 2011 | CHESAPEAKE BEACH | 61 | 0 | 2 | $100K |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Mar 16, 2026 | BERTHA | 56 | $5K |
| Mar 16, 2026 | PRINCE FREDERICK | 56 | $10K |
| Mar 16, 2026 | STOAKLEY | 56 | $100K |
| Mar 16, 2026 | HUNTINGTOWN | 52 | $1K |
| Mar 16, 2026 | STOAKLEY | 52 | $1K |
| Mar 16, 2026 | BARSTOW | 52 | $1K |
| Mar 16, 2026 | ST LEONARD | 52 | $1K |
| Jul 27, 2025 | LUSBY | 56 | $5K |
| Jul 27, 2025 | ST LEONARD | 52 | $6K |
| Jul 27, 2025 | STOAKLEY | 52 | $6K |
Other hazards here
More from Calvert County
- Hail 49
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A microburst caused more than $100,000 in damage to a private airfield in northwest Calvert Co. One hangar was destroyed, and the roof of another hangar was thrown 1,000 feet, destroying an antique single-engine piper cub. Planes being rebuilt in the destroyed hangar sustained minor damage. Trees and power lines were also knocked down by the displaced roof, causing over 4,000 Southern Maryland Electric Co-operative customers to be without power.
Dozens of trees snapped and uprooted scattered across the area along MD-231 Hallowing Point Road from the Patuxent River Bridge to MD-508 Adelina Road, including in Hallowing Point Park. The county reported trees were uniformly downed toward the southeast.
The same thunderstorm which produced combination downbursts and gustnadoes in southeast St Mary's County produced additional damage along the north shore of the Patuxent River from Solomons through the Chesapeake Ranch Estates. Numerous trees were uprooted or snapped, including a 100-foot tall oak which crashed onto a vehicle.
Quick answers
Frequently asked
How many thunderstorm wind events are on record in Calvert County, Maryland?
302 thunderstorm wind events are recorded in Calvert County between 1960 and 2026, causing 0 direct deaths.
What is the strongest thunderstorm wind recorded in Calvert County?
The strongest thunderstorm wind on record in Calvert County measured 90.
Where does the thunderstorm wind data for Calvert County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Thunderstorm Wind in Calvert County, Maryland.” Severe Weather History. severeweatherhistory.com/county/maryland/calvert-county/thunderstorm-wind/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.