Black Hawk storm history

Significant wind damage occurred in Dunkerton, where a COOP was damaged.

Sheets of dime to quarter size hail reported.

A delayed report via social media.

A wind gust measured by the Waterloo ASOS. Time from METAR.

Delayed report relayed by social media. Time estimated from radar.

Spotter submitted picture of hail larger than a quarter north of Irvine Prairie. Delayed report, time and location estimated with radar.

Lightning struck a home and the fire department confirmed a hole in the roof with a small area of smoldering material in the attic. Reported by emergency manager, time estimated.

Measured by a personal weather station. Reports of trees down in town as well.

A 59 mph gust at a personal weather station.

A 65 mph gust from Iowa Dept. of Transportation RWIS.

A 60 mph gust at a personal weather station.

Several reports across Waterloo of trees on utility lines and transformers. Power is out in various locations around Waterloo. Time estimated by radar and ASOS recorded gust.

Gust to 78 mph at Waterloo ASOS.

Thunderstorm wind gust reported at the Waterloo Airport.

Black Hawk EM, broadcast media, and local spotters reported roadways closed due to flooding, stranded vehicles, and water up to the curb on roadways in and around Waterloo. Public reports in Waterloo and Cedar Falls of swift moving water in low lying areas, as well as water bubbl…

Coordination with the Black Hawk EM prompted a transition from flash flooding to areal flooding, as water continued to impact the area hours after the initial rainfall.

Wind gust measured by personal weather station.

Wind gust measured by a personal weather station.

Tree debris with small and medium sized branches covering the roadways.

Wind gusts around 60 mph reported in Cedar Falls.

Multiple photos of large branches down in Cedar Falls area.

Tree down on power lines resulting in power outages around Cedar Falls.

Damage to homes due to downed tree limbs.

Wind gust report from personal weather station.

Semi blown over on Highway 20 east of Waterloo, southwest of Jesup.

Public report of powerlines down and trees damaged, along with minor roof damage.

Pea to nickel sized hail reported.

Hail reported from a trained spotter. Time estimated from radar.

Personal weather station reported a peak gust of 74 mph.

Multiple personal weather stations in the area reporting wind gusts over 60 mph.

Widespread rainfall of 1 to 2 inches over the past week helped to end the Severe Drought conditions across Black Hawk County.

Report by kwwl tv.

Severe Drought expanded into Black Hawk County as dry fall conditions persisted along with above normal temperatures.

Relayed by broadcast media of 1-inch hail.