Power Outage in Iowa Falls, IA

Emergency management also reports downed power lines.

Emergency manager reported multiple tree limbs and power lines down in Iowa Falls.

Emergency manager reported multiple tree limbs and power lines down in Iowa Falls.

Trained spotter reported large trees down and power outage.

County Emergency Manager reported multiple large trees down with power outages. Time estimated via radar.

Trained spotter reported many whole trees down, either snapped or uprooted, along with several smaller limbs down throughout town. Some roads were blocked from the downed trees. The local college was without power. Penny hail also occurred.

Trained spotter reported numerous instances of medium to large tree branches down while driving around town, including estimated 12 inch diameter branches. Also reported power out in parts of town. Time estimated from radar.

A lightning strike blew a transformer causing a loss of power, internet and cell service.

Public reported wind damage in and near Iowa Falls, including tree branches and power pole damage. This is a delayed report. Time and location estimated based on radar.

Tornado developed south of Hubbard and moved quickly northeast. Tree and power line damage occurred along it's path with some outbuilding damage to the southeast of Hubbard.

Law Enforcement reported several large trees and power lines down in Steamboat Rock. At least 2 power poles snapped in half just west of Steamboat Rock on D35.

Law Enforcement reported several power lines and large trees down throughout the town of Alden.

A dynamic system rolled through the upper Midwest during the day on the 6th into the evening hours. A strong upper level system, combined with a sharp cold front, moved through Iowa during the evening hours of the 7th. The atmosphere was capped during the day with elevated showers moving across the state. During the late afternoon, the mid level cap broke down. Instability was sufficient with nearly 2000 J/kg of CAPE available, and lifted indices in the -5 to -9 C range. CAPE in the -10 to -30 C layer of the atmosphere was around 600 J/kg and downdraft CAPE values were under 1000 J/kg. Temperatures during the day were in the low to mid 80s, combined with dew points in the mid to upper 60s just ahead of the cold front. The system was somewhat moisture starved with precipitable water values in the 1.25 to 1.6 inch range. The freezing level was quite high for early September, around 14,000 feet. A narrow line of thunderstorms formed just ahead of the cold front by late afternoon. The storms raced east-northeast at 55 to 60 MPH. A small section of the line became severe over parts of north central into northeast Iowa. One funnel cloud was reported in Butler County with the storms. Spotty reports of hail of penny to quarter size were received. High winds blew out a porch window in Butler County. Earlier, thunderstorms produced 60 MPH winds in the Lake Mills area, overturning a trailer and snapping a power poll off at the top.