Iowa Severe Flash Flood Warning | Effective 09/20/2026 03:04
At 504 AM CDT, Doppler radar indicated a large area of light to
moderate rain was occurring across the warned area. Heavy rain
producing storms earlier brought rainfall of 2 to 5 inches across the
warned area. Flash flooding is either ongoing or expected to begin
shortly due to runoff from the earlier heavy rain combined with the
steady rain falling.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,