Sep 20, 2025
Widespread daytime and evening thunderstorm activity impacted the WFO Norman Forecast Area on the 20th. This activity was influenced by two factors: 1.) a weak surface low and associated front, and 2.) a remnant mesoscale convective vortex (MCV) across the Red River Valley. Despite relatively weak wind shear across most of the area, slightly stronger daytime instability across the former regime promoted more robust convection (and associated severe outcomes). Damaging wind gusts and a few instan
Source: NOAA National Weather Service Storm Events Database (event 1289662). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Garfield County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.