A low pressure system with an accompanying cool front produced showers and thunderstorms.  Several reports of damaging winds of 60 to 70 MPH occurred, along with isolated reports of large hail.

Thunderstorm Wind in JONES, IOWA
From 28-MAY-16 13:56:00 to 28-MAY-16 13:56:00 (CST-6)
Location: AMBER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The county emergency manager reported power lines down and the roof blown off a machine shed at the intersection of county road X44 and highway 64 south of Amber.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 14:17:00 to 28-MAY-16 14:17:00 (CST-6)
Location: CASCADE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The fire department reported an estimated wind gust of 60 MPH and was relayed by the Dubuque County EOC.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 14:48:00 to 28-MAY-16 14:48:00 (CST-6)
Location: CENTER GROVE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Received via social media reports of power lines down and roof damage on the  northwest side of Dubuque.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 14:45:00 to 28-MAY-16 14:45:00 (CST-6)
Location: PEOSTA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported a two foot diameter tree was snapped off.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 14:50:00 to 28-MAY-16 14:50:00 (CST-6)
Location: CENTRALIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported wires were down along old highway road near Hilldale Lane west of the fairgrounds.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 15:00:00 to 28-MAY-16 15:00:00 (CST-6)
Location: DURANGO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported a tree fell onto an occupied vehicle near 5200 N and Rupp Hollow Road.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 15:00:00 to 28-MAY-16 15:00:00 (CST-6)
Location: DURANGO
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Reports of multiple trees down in the area. One tree fell onto a bicyclist on a bike path along highway 52.  The person was not injured but was temporarily trapped.

Thunderstorm Wind in SCOTT, IOWA
From 28-MAY-16 15:30:00 to 28-MAY-16 15:30:00 (CST-6)
Location: WEST LAKE PARK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A large tree branch down was also reported.

Thunderstorm Wind in DUBUQUE, IOWA
From 28-MAY-16 14:46:00 to 28-MAY-16 14:46:00 (CST-6)
Location: SAGEVILLE
Magnitude: 56.00 EG
Property damage: 90.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported a roof was partially ripped off of a school.

Hail in SCOTT, IOWA
From 28-MAY-16 15:43:00 to 28-MAY-16 15:43:00 (CST-6)
Location: DAVENPORT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Received via local media a report of dime sized hail in Davenport.