Oklahoma

Storm History: Harmon County, Oklahoma

506 episodes, 798 events since 1952

Every storm the National Weather Service has filed in Harmon County, Oklahoma: 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
798
Deaths
0
Injuries
6
Damage
$12 million
Episodes
506

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 Harmon 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
Hail23600$1.4 million
Tornado20606$1.8 million
Drought14200$8.6 million
Flash Flood3400$32,000
Thunderstorm Wind3300$59,000
Excessive Heat3200
Heat2900
High Wind2400$10,000
Ice Storm1100$542,000
Heavy Snow1000
Winter Storm1000$5,000
Flood600$750
Cold/Wind Chill500
Blizzard400
Wildfire400
Dense Fog300
Extreme Cold/Wind Chill300
Winter Weather200
Dust Storm100
Strong Wind100
Heavy Rain100
Frost/Freeze100

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 Harmon County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Harmon CountyEvery warning in Harmon County since 1986Every county in Oklahoma

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.