Severe Weather History


Hazard archive · 1950 — present

Flash Flood in Johnston County, Oklahoma

49

Recorded events

1

Direct deaths

0

Direct injuries

$360K

Property damage

Flash Flood in Johnston County, Oklahoma: 49 recorded events between 2001 and 2025. The strongest on record measured 0. That places the county #616 nationally and #20 statewide for this hazard.

Decade by decade

Flash Flood in Johnston County, Oklahoma: events per decade

Flash Flood in Johnston County, Oklahoma: recorded events per decade
Flash Flood in Johnston County, Oklahoma: recorded events per decade

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for flash flood in Johnston County is the 2010s, when 25 of the county's 49 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 Johnston County archive, flash flood makes up 10.3% of all recorded severe weather across 7 hazard types. Nationally the county sits at #616 for this hazard and #20 within Oklahoma, putting it in the 79.6 percentile of all U.S. counties.

Seasonality

Events by month

0Jan
0Feb
2Mar
3Apr
20May
12Jun
3Jul
1Aug
6Sep
1Oct
0Nov
1Dec

May is the peak month for flash flood in Johnston County with 20 recorded events, while Jan 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

DateLocationScaleDeathsInjuriesDamage
Mar 27, 2018FOLSOM010$0
Source: NOAA/NCEI Storm Events · dates UTC

Most recent

Latest recorded events

DateLocationMagnitudeDamage
Jun 9, 2025EMET0$0
Jun 9, 2025REAGAN0$0
Jun 9, 2025FILLMORE0$10K
May 26, 2025TISHOMINGO0$25K
May 26, 2025MILBURN0$75K
May 26, 2025TISHOMINGO0$50K
May 26, 2025TISHOMINGO0$0
Jun 10, 2024TROY0$25K
Apr 28, 2024MANNSVILLE0$0
Apr 28, 2024MILL CREEK0$0
Source: NOAA/NCEI Storm Events · dates UTC · recent entries may be preliminary

Other hazards here

More from Johnston County

County overview →

From the record

What the reports say

Written by National Weather Service staff at the time of the event · public domain

Quick answers

Frequently asked

How many flash flood events are on record in Johnston County, Oklahoma?

49 flash flood events are recorded in Johnston County between 2001 and 2025, causing 1 direct deaths.

What is the strongest flash flood recorded in Johnston County?

The strongest flash flood on record in Johnston County measured 0.

Where does the flash flood data for Johnston 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

“Flash Flood in Johnston County, Oklahoma.” Severe Weather History. severeweatherhistory.com/county/oklahoma/johnston-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.


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