textproduct: Des Moines

KEY MESSAGES

- Locally heavy rainfall with isolated flash flooding risk over southern Iowa today. Rounds of rain and storms over southern into portions of central Iowa this morning drifting southeastward through the day. Much of the rainfall is over for southern Iowa by this evening.

- Below average temperatures the rest of the work week, followed by warming temperatures and storm chances.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/

Issued at 251 PM CDT Tue Aug 4 2026

In the extended, temperatures will stay near to below average through the end of the work week and 90 degree highs will try to make a return over the weekend. The region will be locked in northwest flow which keeps thunderstorm chances in play.

AVIATION /12Z TAFS THROUGH 12Z THURSDAY/

Issued at 702 AM CDT Wed Aug 5 2026

Showers and storms are passing through central and southern Iowa this morning, leading to MVFR and IFR conditions at KOTM and KDSM. Flight restrictions could continue into the afternoon hours with the highest confidence at KOTM. Areas of light, patchy fog have started to develop at KFOD and KMCW behind the line of showers; however we are not expecting any restrictions this morning at these terminals. As we near the end of the TAF period, areas of fog could develop over eastern Iowa. MVFR restrictions have been introduced to highlight the fog, but lower flight categories may be required as confidence builds in later TAF issuances.

DMX WATCHES/WARNINGS/ADVISORIES

Flood Watch through this evening for IAZ086-096-097.