⚠️ Flash Flood Warning – Des Moines, IA; Louisa, IA; Henderson, IL; Mercer, IL; Warren, IL – Friday, August 14, 2026

Flash Flood Warning issued August 14 at 4:59AM CDT until August 14 at 11:00AM CDT by NWS Quad Cities IA IL

Details

FFWDVN

The National Weather Service in Quad Cities has issued a

* Flash Flood Warning for…
Northeastern Des Moines County in southeastern Iowa…
Louisa County in southeastern Iowa…
Mercer County in northwestern Illinois…
Northeastern Henderson County in west central Illinois…
Northern Warren County in west central Illinois…

* Until 1100 AM CDT Friday.

* At 459 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have already fallen across the warned area from ongoing storms, or
from storms earlier. Additional rainfall amounts of 2 to 3 inches
are possible in the warned area. Flash flooding is ongoing or
expected to begin shortly.

HAZARD…Flash flooding caused by thunderstorms.

SOURCE…Radar indicated.

IMPACT…Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

* Some locations that will experience flash flooding include…
Aledo, Wapello, Columbus Junction, Burgess, Viola, Morning Sun, New
Windsor, Millersburg, Matherville, New Boston, Sherrard,
Keithsburg, Grandview, Reynolds, Eliza, Joy, Columbus City, Letts,
Little York and Seaton.

This includes the following State Parks…
Big River State Forest.

Instructions

Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.