Quad Cities, IA/IL

Weather Forecast Office

Event Summary: July 29 Severe Line of Storms (Derecho) Impacts Eastern Iowa

Overview

Summary infographic

The NWS Storms Prediction Center has stated that the line of storms from South Dakota and northeast Nebraska through Iowa would meet the objective definition of a derecho. More about derechos.

More on this event: NWS Sioux Falls, SD

Photos & Video
Radar
Storm Reports
Environment

Photos & Video

Central City, IA

Carrie Callan

Lake Delhi, IA

Prefers Unnamed

Sigourney, IA

Darian Graff

Davenport, IA

Jon White

Central City, IA

Gracyn Freund - KGAN

Aurora, IA

Michael Ellis

Parkview, IA

Dusty Mizer

Radar

Radar Loop With Warnings and Storm Reports

Storm Reports

Regional Storm Report Map	Local Storm Report Map

Interactive Storm Report Map (SPC) Nationwide Storm Report Map Image (SPC)

Preliminary Local Storm Report...Summary
National Weather Service Quad Cities IA IL
1002 AM CDT Tue Jul 29 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0340 AM     Tstm Wnd Gst     3 NNW Moline            41.52N 90.51W
07/29/2025  M54 MPH          Rock Island        IL   Dept of Highways

            IADOT RWIS.

0342 AM     Tstm Wnd Gst     Moline Quad-City Airpor 41.45N 90.50W
07/29/2025  M60 MPH          Rock Island        IL   ASOS

            ASOS.

0400 AM     Tstm Wnd Dmg     East Moline             41.51N 90.42W
07/29/2025                   Rock Island        IL   Public

            Large tree uprooted near the town border of
            East Moline and Silvis. Photo of damage
            relayed via social media. Time estimated by
            radar.

0329 AM     Tstm Wnd Gst     Davenport Municipality  41.61N 90.59W
07/29/2025  M59 MPH          Scott              IA   ASOS

            Davenport Municipal Airport ASOS.

0334 AM     Tstm Wnd Gst     Davenport               41.52N 90.61W
07/29/2025  E60 MPH          Scott              IA   Trained Spotter



0220 AM     Tstm Wnd Gst     Cedar Rapids Municipali 41.88N 91.72W
07/29/2025  M52 MPH          Linn               IA   Public

            ASOS.

0226 AM     Tstm Wnd Gst     3 E Cedar Rapids        41.97N 91.61W
07/29/2025  M83 MPH          Linn               IA   Trained Spotter

            From PWS.

0230 AM     Tstm Wnd Gst     Lisbon                  41.92N 91.39W
07/29/2025  M60 MPH          Linn               IA   Public



0230 AM     Tstm Wnd Dmg     Central City            42.20N 91.52W
07/29/2025                   Linn               IA   Broadcast Media

            Photo relayed of large tree branch broken
            off. Time estimated by radar.

0240 AM     Tstm Wnd Gst     1 S Mount Vernon        41.91N 91.42W
07/29/2025  M52 MPH          Linn               IA   Dept of Highways

            IADOT RWIS.

0300 AM     Tstm Wnd Dmg     1 W Sigourney           41.34N 92.22W
07/29/2025                   Keokuk             IA   Trained Spotter

            Large tree branch split from a pear tree.
            Branch seems to be at least 6 inches in
            diameter.

0500 AM     Rain             1 W Sigourney           41.34N 92.22W
07/29/2025  M2.50 Inch       Keokuk             IA   Public



0820 AM     Rain             1 W Sigourney           41.34N 92.22W
07/29/2025  M2.50 Inch       Keokuk             IA   Trained Spotter

            Rainfall total from overnight.

0228 AM     Tstm Wnd Gst     1 NE Fairview           42.09N 91.32W
07/29/2025  M58 MPH          Jones              IA   Mesonet

            Personal weather station.

0230 AM     Tstm Wnd Gst     1 SSW Fairview          42.07N 91.34W
07/29/2025  M74 MPH          Jones              IA   Dept of Highways

            IADOT RWIS.

0235 AM     Tstm Wnd Gst     1 S Fairview            42.07N 91.34W
07/29/2025  M74 MPH          Jones              IA   Mesonet

            Mesonet station RCRI4 Anamosa.

0241 AM     Tstm Wnd Gst     3 ESE Monticello Munici 42.22N 91.10W
07/29/2025  M65 MPH          Jones              IA   Public

            PWS.

0308 AM     Tstm Wnd Dmg     Wyoming                 42.06N 91.01W
07/29/2025                   Jones              IA   Public

            Pine tree snapped across roadway and
            flagpole broken.

0308 AM     Tstm Wnd Gst     Wyoming                 42.06N 91.01W
07/29/2025  M71 MPH          Jones              IA   Public



0241 AM     Tstm Wnd Gst     Iowa City Municipality  41.64N 91.55W
07/29/2025  M63 MPH          Johnson            IA   ASOS

            ASOS.

0308 AM     Tstm Wnd Gst     Dubuque Regional Arpt   42.40N 90.71W
07/29/2025  M52 MPH          Dubuque            IA   ASOS

            ASOS.

0309 AM     Tstm Wnd Gst     1 E Dubuque Regional Ar 42.40N 90.70W
07/29/2025  M52 MPH          Dubuque            IA   ASOS

            ASOS station KDBQ Dubuque Arpt.

0345 AM     Tstm Wnd Gst     3 NW Kingston           41.02N 91.07W
07/29/2025  M52 MPH          Des Moines         IA   Mesonet

            Personal weather station.

0423 AM     Tstm Wnd Gst     Burlington Regional Air 40.78N 91.13W
07/29/2025  M52 MPH          Des Moines         IA   ASOS

            ASOS.

0232 AM     Tstm Wnd Dmg     Manchester              42.49N 91.46W
07/29/2025                   Delaware           IA   Emergency Mngr

            Trees and power lines down.

0237 AM     Tstm Wnd Dmg     3 WSW Delhi             42.41N 91.38W
07/29/2025                   Delaware           IA   Broadcast Media

            Photos of tree damage around Lake Delhi.

1003 AM     Rain             Dewitt                  41.82N 90.55W
07/28/2025  M1.10 Inch       Clinton            IA   Public



0330 AM     Tstm Wnd Dmg     Dewitt                  41.82N 90.55W
07/29/2025                   Clinton            IA   Trained Spotter

            Many small to medium tree branches down.

0345 AM     Tstm Wnd Gst     2 W Fulton              41.86N 90.19W
07/29/2025  M58 MPH          Clinton            IA   Trained Spotter

            Time estimated by radar. Minor tree damage
            was also noted nearby.

0946 AM     Tstm Wnd Dmg     Dewitt                  41.82N 90.55W
07/29/2025                   Clinton            IA   Public



0309 AM     Tstm Wnd Gst     Lowden                  41.86N 90.92W
07/29/2025  E65 MPH          Cedar              IA   CO-OP Observer

            Persisting for the past 5 to 10 minutes.

0140 AM     Tstm Wnd Dmg     Jesup                   42.47N 92.07W
07/29/2025                   Buchanan           IA   Public

            Broken tree branches estimated 4 inches in
            diameter. Another tree uprooted. Time
            estimated by radar.

0140 AM     Tstm Wnd Gst     1 N Independence        42.48N 91.89W
07/29/2025  E70 MPH          Buchanan           IA   Trained Spotter

            Trees leaning 15-20 degrees from vertical.

0141 AM     Tstm Wnd Gst     2 ENE Hazleton          42.63N 91.86W
07/29/2025  E70 MPH          Buchanan           IA   CO-OP Observer

            Duration of at least 5 minutes.

0144 AM     Tstm Wnd Dmg     Hazleton                42.62N 91.91W
07/29/2025                   Buchanan           IA   Emergency Mngr

            Trees down in town.

0146 AM     Tstm Wnd Dmg     2 ENE Hazleton          42.63N 91.86W
07/29/2025                   Buchanan           IA   CO-OP Observer

            Two 10 inch diameter trees downed. Time
            estimated.

0148 AM     Tstm Wnd Dmg     1 N Independence        42.48N 91.89W
07/29/2025                   Buchanan           IA   Trained Spotter

            Trees down.

0148 AM     Tstm Wnd Dmg     Independence            42.47N 91.89W
07/29/2025                   Buchanan           IA   Emergency Mngr

            Tree down in town.

0150 AM     Tstm Wnd Dmg     1 E Independence        42.47N 91.88W
07/29/2025                   Buchanan           IA   Public

            Large trees uprooted.

0150 AM     Tstm Wnd Dmg     2 NE Independence       42.49N 91.87W
07/29/2025                   Buchanan           IA   Public

            Large tree down. Many 1-3 inch diameter
            branches down.

0154 AM     Tstm Wnd Dmg     Aurora                  42.62N 91.73W
07/29/2025                   Buchanan           IA   Public

            Photo of 14 inch diameter oak tree snapped
            that narrowly missed falling on a house and
            garage. Photo relayed via social media. Time
            estimated by radar.

0200 AM     Tstm Wnd Gst     1 ESE Independence      42.47N 91.88W
07/29/2025  M77 MPH          Buchanan           IA   Mesonet

            Mesonet station EW8796 Independence.

0201 AM     Tstm Wnd Gst     5 S Vinton              42.09N 92.03W
07/29/2025  M61 MPH          Benton             IA   Public

            PWS.

Outlooks and Environment

Storm Prediction Center Outlooks

SPC Day 1 2000z Outlook

Tornado Risk Probabilities

Severe Wind Risk Probabilities

**Sig Severe Possible**

Severe Hail Risk Probabilities

Watches and Mesoscale Discussions


Severe Thunderstorm Watch #555	Mesoscale Discussion #1831	Mesoscale Discussion #1832

Local Soundings and Radar Profiler Data at DVN


07/28/2025 - 7:00AM	07/28/2025 7:00PM

KDVN VWP Data from 2:30 A.M. (right) to 4:30 A.M. (left)

This is the NWS Quad Cities (DVN) Doppler Radar vertical wind profile data in the hour following the line of storm passage. This shows the well-defined rear-inflow jet that had developed within the long-lived line of storms. It likely had weakened at this point compared to the northwest of the Quad Cities. Often the rear-inflow jet is a factor in severe winds.

Synoptic Environment