FloodZoneMap.org

Flash Flood — Johnston, OK

Jun 8, 2025

Another episode of intense severe weather impacted much of the WFO Norman Forecast Area during the afternoon through mid-evening on the 8th. Thunderstorm activity during this episode was focused generally along and just ahead of a southeastward advancing cold front, as a strong upper trough dove across the Plains. Very strong instability and sufficient deep-layer wind shear promoted organized thunderstorm modes, with numerous thunderstorm clusters (Oklahoma) and a few intense supercells (western

Source: NOAA National Weather Service Storm Events Database (event 1276091). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Johnston, OK

This event is one of many recorded floods in Johnston County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Johnston County flood data →

More Flood Stories

Flash Flood$75K damage

Johnston, OK · May 25, 2025

This episode once again featured widespread severe convection across the central and southern extents of the WFO Norman Forecast Area from the afternoon of the 25th into early morning of the 26th.

Read the full account →
Flash Flood$50K damage

Johnston, OK · May 25, 2025

This episode once again featured widespread severe convection across the central and southern extents of the WFO Norman Forecast Area from the afternoon of the 25th into early morning of the 26th.

Read the full account →
Flash Flood$25K damage

Johnston, OK · May 25, 2025

This episode once again featured widespread severe convection across the central and southern extents of the WFO Norman Forecast Area from the afternoon of the 25th into early morning of the 26th.

Read the full account →
Flash Flood$10K damage

Johnston, OK · Jun 8, 2025

Another episode of intense severe weather impacted much of the WFO Norman Forecast Area during the afternoon through mid-evening on the 8th. Thunderstorm activity during this episode was focused generally along and just ahead of a southeastward advancing cold front, as a strong…

Read the full account →