St. Mary's County, Maryland
Tornadoes, hail, floods and severe storms recorded here between 1962 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
34
Tornado reports
80
Hail reports
240
Floods since 1996
1,060
All events
3
Deaths
$109.6M
Property damage
Tornado paths in St. Mary's County
The part of each tornado’s path NOAA recorded in this county, 30 in all. Zoom in and the paths widen to their surveyed width.
EF0EF1EF2EF3EF4EF5Unrated
Year by year
All storm eventsTornadoes
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
Most significant events
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
Tropical Storm Force winds observed at Patuxent River Naval Air Station ASOS (KNHK) with sustained winds of 40 mph at 8:04 AM EST, and a peak wind gust of 58 mph at 9:12 AM EST. Also observed at St. Indigoes MD ASOS (KNUI) with sustained winds of 30 mph at 7:53 AM EST, and a peak…
Hundreds of trees blew down around Charlotte Hall, Golden Beach, and Mechanicsville. Many trees blew down onto houses and cars. Numerous trees blew down along Golden Beach Road and on northbound MD-5 Leonardtown Road near Charlotte Hall and Golden Beach. Numerous trees blew down …
Wind gusts of 58-64 mph were measured at Patuxent Naval Base and Webster Naval Field. There were less than a dozen trees down county wide with minor property damage and one trailer destroyed by a falling tree.
Hundreds of trees and power lines were down across the county. Numerous Roads were closed due to downed trees. An unknown number of trees fell onto homes and cars.
Catastrophic damages were sustained in extreme Lower Southern Maryland from the remnants of Tropical Storm Ernesto. Most of the damages were caused by the high winds, although damages were also sustained due to extensive storm surge flooding of coastal areas. High winds persisted…
Thunderstorm Wind Thunderstorm Wind
A tree blew down in Leonardtown.
Thunderstorm Wind Thunderstorm Wind
A couple of trees blew down in Mechanicsville.
Thunderstorm Wind Thunderstorm Wind
A tree blew down in the 30000 block of Three Notch Road.
Thunderstorm Wind Thunderstorm Wind
A tree blew down in the 21400 block of Oakley Road.
Thunderstorm Wind Thunderstorm Wind
A tree blew down onto a house on Summit Court. A tree blew down onto a structure in the 30300 block of Summit Hill Drive. A tree blew down on Summit Hill Drive.
Thunderstorm Wind Thunderstorm Wind
A tree and power lines blew down at Yardley Drive and Crofton Court. A tree and power lines blew down at German Chapel Road and Dan Bowen Road.
Thunderstorm Wind Thunderstorm Wind
A tree blew down on Western Shores Boulevard at Saint Leonard Road.
Thunderstorm Wind Thunderstorm Wind
A tree blew down onto a structure in the 45700 block of Belvoir Road.
Thunderstorm Wind Thunderstorm Wind
A tree blew down on Saint John's Road/Hickory Hill Road near the intersection with MD-235 Three Notch Road.
Thunderstorm Wind Thunderstorm Wind
Saint Mary's 911 Call Center reported about a dozen or so calls for trees and wires down from Leonardtown to Hollywood.
Winter Storm Winter Storm
Cold/Wind Chill Cold/Wind Chill
High Wind High Wind
The ASOS at Patuxent River NAS, KNHK, measured a peak wind gust of 58 mph.
Winter Storm Winter Storm
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Winter Weather Winter Weather
Winter Weather Winter Weather
Thunderstorm Wind Thunderstorm Wind
Two trees blew down between Park Hall and Lexington Park.
Thunderstorm Wind Thunderstorm Wind
There were multiple reports of trees blown down in Callaway.
Thunderstorm Wind Thunderstorm Wind
There were multiple reports of trees blown down in Lexington Park.
Thunderstorm Wind Thunderstorm Wind
A wind gust of 67 knots (77 MPH) was measured by the ASOS at Patuxent River Naval Air Station (KNHK).
Thunderstorm Wind Thunderstorm Wind
Two trees blew down near the intersection of Chingville Road and MD-244 Medleys Neck Road.
Thunderstorm Wind Thunderstorm Wind
Tree damage was reported near Mechanicsville, including a tree that blew down onto a house in the 40200 block of Waterview Drive.
Tornado EF1 Tornado
On the evening of Tuesday, July 1st, 2025, a severe thunderstorm produced an EF-1 tornado three miles southwest of Leonardtown, along Breton Bay, Maryland. The tornado started near the Breton Bay Community Dock where it uprooted two pine trees. The tornado then continued northeas…
Thunderstorm Wind Thunderstorm Wind
A tree blew down onto a residence on Winding Way.
Thunderstorm Wind Thunderstorm Wind
Trees blew down along Johnson Road.
Thunderstorm Wind Thunderstorm Wind
There were a couple of calls for trees blown down on Willows Road near MD-5 Point Lookout Road.
Excessive Heat Excessive Heat
The ASOS at Patuxent NAS, KNHK, observed a peak heat index of 111F. The AWOS at Webster Airfield, KNUI, observed a peak heat index of 111F.
Excessive Heat Excessive Heat
The ASOS at Patuxent NAS, KNHK, observed a peak heat index of 111F. The AWOS at Webster Airfield, KNUI, observed a peak heat index of 110F.
Thunderstorm Wind Thunderstorm Wind
Wind gusts of up to 50 knots (58 MPH) were measured by the Point Lookout WeatherFlow sensor (XPTL).
Hail Hail
Quarter size hail accumulated on the ground near California.
Hail Hail
Half dollar size hail was reported southeast of California.
Hail Hail
Quarter size hail was reported south of Hollywood.
Hail Hail
Quarter size hail was reported near Lexington Park.
Thunderstorm Wind Thunderstorm Wind
There were nearly two dozen reports of trees down in the Mechanicsville area.
Thunderstorm Wind Thunderstorm Wind
Several trees blew down in the Piney Point area.
Thunderstorm Wind Thunderstorm Wind
A wind gust of 64 knots (74 MPH) was measured by the ASOS at Patuxent River Naval Air Station (KNHK).
Thunderstorm Wind Thunderstorm Wind
Trees blew down in the Great Mills area.
Winter Weather Winter Weather
High Wind High Wind
The ASOS at Patuxent Naval Air Station, KNHK, measured a peak wind gust of 59 mph.
Winter Storm Winter Storm
Winter Weather Winter Weather
Highest amounts near two inches in southern portions of the county.
Events by year, as a table
| Year | Events | Tornadoes |
|---|---|---|
| 2026 | 15 | 0 |
| 2025 | 28 | 1 |
| 2024 | 26 | 0 |
| 2023 | 31 | 0 |
| 2022 | 41 | 2 |
| 2021 | 49 | 0 |
| 2020 | 80 | 2 |
| 2019 | 54 | 0 |
| 2018 | 56 | 0 |
| 2017 | 49 | 0 |
| 2016 | 41 | 1 |
| 2015 | 39 | 1 |
| 2014 | 32 | 1 |
| 2013 | 39 | 3 |
| 2012 | 32 | 1 |
| 2011 | 45 | 4 |
| 2010 | 30 | 0 |
| 2009 | 25 | 0 |
| 2008 | 47 | 0 |
| 2007 | 25 | 0 |
| 2006 | 20 | 1 |
| 2005 | 6 | 0 |
| 2004 | 13 | 1 |
| 2003 | 29 | 2 |
| 2002 | 18 | 0 |
| 2001 | 20 | 1 |
| 2000 | 41 | 1 |
| 1999 | 20 | 0 |
| 1998 | 21 | 0 |
| 1997 | 10 | 0 |
| 1996 | 23 | 1 |
| 1995 | 7 | 6 |
| 1994 | 2 | 0 |
| 1993 | 3 | 0 |
| 1992 | 3 | 0 |
| 1991 | 3 | 0 |
| 1990 | 2 | 0 |
| 1989 | 4 | 0 |
| 1988 | 1 | 0 |
| 1987 | 2 | 0 |
| 1986 | 4 | 0 |
| 1984 | 3 | 2 |
| 1983 | 3 | 1 |
| 1982 | 2 | 0 |
| 1980 | 2 | 0 |
| 1979 | 2 | 1 |
| 1977 | 2 | 0 |
| 1971 | 1 | 0 |
| 1968 | 1 | 0 |
| 1967 | 4 | 1 |
| 1965 | 1 | 0 |
| 1964 | 1 | 0 |
| 1963 | 1 | 0 |
| 1962 | 1 | 0 |
Search your address
See every tornado that passed within 25 miles of a place in St. Mary's County, measured to its path.
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