A line of thunderstorms moved east across the area during the early morning hours of Sunday, August 18. Small hail and downed trees were seen in the Cedar Rapids area and in Cedar county. A brief tornado occurred near Grand Mound, IA around 5:30 am as the storms rolled through the region.

Thunderstorm Wind in CEDAR, IOWA
From 18-AUG-19 04:30:00 to 18-AUG-19 04:30:00 (CST-6)
Location: SUNBURY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to two inch diameter branches were blown down between Durant and Bennett.

Thunderstorm Wind in SCOTT, IOWA
From 18-AUG-19 04:36:00 to 18-AUG-19 04:36:00 (CST-6)
Location: WALCOTT
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A farm reported seven trees uprooted and laying in the same direction. A small shed was also blown down.

Thunderstorm Wind in SCOTT, IOWA
From 18-AUG-19 05:00:00 to 18-AUG-19 05:00:00 (CST-6)
Location: SCOTT COUNTY PARK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Numerous large tree limbs in Scott County Park were reported blown down through photos on social media.

Tornado in CLINTON, IOWA
From 18-AUG-19 04:40:00 to 18-AUG-19 04:41:00 (CST-6)
Location: GRAND MOUND
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado occurred at a farmstead. Numerous tree branches were down, with one tree uprooted. The home had trim and shingle damage, and a window broken. Grass was splattered on the garage and wind driven hail was also noted on west side of home and garage. Maximum winds were estimated to be 85 mph.

Hail in LINN, IOWA
From 18-AUG-19 03:29:00 to 18-AUG-19 03:29:00 (CST-6)
Location: HIAWATHA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in LINN, IOWA
From 18-AUG-19 03:30:00 to 18-AUG-19 03:30:00 (CST-6)
Location: MARION MC BRIDE ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, IOWA
From 18-AUG-19 03:34:00 to 18-AUG-19 03:34:00 (CST-6)
Location: MARION
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, IOWA
From 18-AUG-19 03:38:00 to 18-AUG-19 03:38:00 (CST-6)
Location: HIAWATHA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, IOWA
From 18-AUG-19 03:40:00 to 18-AUG-19 03:40:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, IOWA
From 18-AUG-19 03:59:00 to 18-AUG-19 03:59:00 (CST-6)
Location: MARION MC BRIDE ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LINN, IOWA
From 18-AUG-19 03:20:00 to 18-AUG-19 03:20:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several reports of tree damage on the west side of Cedar Rapids, as reported by broadcast media.

Thunderstorm Wind in LINN, IOWA
From 18-AUG-19 03:31:00 to 18-AUG-19 03:31:00 (CST-6)
Location: BEVERLY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Partial roof collapse reported at business with a large warehouse style building.

Thunderstorm Wind in CEDAR, IOWA
From 18-AUG-19 04:23:00 to 18-AUG-19 04:23:00 (CST-6)
Location: TIPTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several small trees were blown down.

Thunderstorm Wind in JOHNSON, IOWA
From 18-AUG-19 03:42:00 to 18-AUG-19 03:42:00 (CST-6)
Location: LAKE MACBRIDE SP
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A large tree was blown down, as reported through social media.