Maryland

Storm History: Allegany County, Maryland

663 episodes, 1,125 events since 1956

Every storm the National Weather Service has filed in Allegany County, Maryland: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
1,125
Deaths
0
Injuries
11
Damage
$19 million
Episodes
663

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Allegany County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Winter Weather22500
Thunderstorm Wind16104$977,000
Hail15200$641,000
Winter Storm15200$20,000
Flash Flood8300$11 million
Dense Fog8100
Frost/Freeze6200
Tornado3806$5.8 million
High Wind3200$927,000
Extreme Cold/Wind Chill3200
Flood2900$5,000
Ice Storm1900$20,000
Cold/Wind Chill1400
Blizzard1300
Heat901$1,000
Excessive Heat700
Heavy Snow500
Heavy Rain400
Wildfire300
Strong Wind200$9,000
Storm Surge/Tide100$5,000
Freezing Fog100

The deadliest

None recorded.

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

The strongest tornadoes

Every tornado in Allegany County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Allegany CountyEvery warning in Allegany County since 1986Every county in Maryland

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.