Showers and thunderstorms percolated through much of the day along a stationary boundary over northwest Iowa. By evening a more robust shortwave moved across the area, accompanied by 30 kts of shear and 1500-2000 J/kg of MLCAPE. This allowed for storms to strengthen across west central Iowa with gusty winds producing some minor damage to trees and out buildings. Additionally, due to the orientation of the shear, a few weak tornadoes developed and were discovered using high resolution satellite imagery.

Tornado in CARROLL, IOWA
From 05-AUG-23 20:24:00 to 05-AUG-23 20:25:00 (CST-6)
Location: MAPLE RIVER
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A brief tornado occurred north of Highway 30 west of Carroll Iowa.  The tornado was found using high resolution satellite imagery.   The tornado was brief and did not impact any damage indicators, hence the EFU rating.

Tornado in SAC, IOWA
From 05-AUG-23 20:29:00 to 05-AUG-23 20:31:00 (CST-6)
Location: AUBURN
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Report of damage from emergency manager later identified as a tornado path using high resolution satellite imagery.  The tornado impacted a outbuilding and tossed debris northward into an agricultural field with EF0 damage.

Tornado in SAC, IOWA
From 05-AUG-23 20:30:00 to 05-AUG-23 20:31:00 (CST-6)
Location: AUBURN
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Tornado was found using high resolution satellite imagery.  Tornado had a curved path through open agricultural fields.  There was no damage to damage indicators, hence the EFU rating.

Funnel Cloud in CALHOUN, IOWA
From 05-AUG-23 18:56:00 to 05-AUG-23 18:56:00 (CST-6)
Location: LAVINIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Delayed report of a funnel cloud near Rockwell City via social media. Time and location estimated via radar.

Thunderstorm Wind in CRAWFORD, IOWA
From 05-AUG-23 20:05:00 to 05-AUG-23 20:05:00 (CST-6)
Location: DENISON MUNI ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Quarter sized hail reported along with a tree down on Highway 59 blocking traffic in both directions.

Thunderstorm Wind in CARROLL, IOWA
From 05-AUG-23 20:27:00 to 05-AUG-23 20:27:00 (CST-6)
Location: MT CARMEL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Semi trailer blown over near the intersection of Highway 71 and 110th Street. Time estimated via radar.

Thunderstorm Wind in CARROLL, IOWA
From 05-AUG-23 20:33:00 to 05-AUG-23 20:33:00 (CST-6)
Location: CARROLL
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Reports of trees and a powerline down in the city of Carroll.

Thunderstorm Wind in CARROLL, IOWA
From 05-AUG-23 20:45:00 to 05-AUG-23 20:45:00 (CST-6)
Location: RALSTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down south of Bennett Access. Time estimated by radar.

Thunderstorm Wind in CALHOUN, IOWA
From 05-AUG-23 20:53:00 to 05-AUG-23 20:53:00 (CST-6)
Location: LAKE CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tree down and blocking Highway 175 in Lake City.

Thunderstorm Wind in GREENE, IOWA
From 05-AUG-23 21:14:00 to 05-AUG-23 21:14:00 (CST-6)
Location: CHURDAN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Delayed report of tree damage south of Churdan. Damage consisted of broken branches a couple inches thick. Report relayed via social media and time estimated via radar.