The City of Marshalltown completed an initial damage assessment of all properties on Thursday, following the powerful derecho on Monday. The numbers show damage that was more extensive than the 2018 tornado, but less catastrophic.

A total 2,778 commercial and residential structures and 126 mobile homes were impacted. As a point of comparison, the 2018 tornado damaged 2,020 properties.

Here is the breakdown by damage type:

• Affected — 2,052

• Minor — 568

• Major — 151

• Destroyed — 7

The classifications come from FEMA’s non-flood damage definitions in the FEMA Preliminary Damage Assessment Guide.

Structures in the major and destroyed classification are being assessed by Marshalltown’s Building Official and are being placarded as dangerous buildings when warranted.

Marshall County Emergency Management Director Kim Elder said she was surprised at the results.

“I was surprised there was more than the tornado,” she said.

Elder said officials keep driving the roads, trying to find damage.

“It’s a big job to report the damage to the state and see if we qualify for assistance,” she said.

Fifty percent of the other towns in Marshall County have submitted their assessments.