Guthrie CountyPower Outage History
2014–2025 · Iowa
Average — typical outage frequency and duration nationally.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Dec 15, 2021 | 77 hrs | 2,666 (49%) | Tornado |
| Aug 10, 2020 | 22 hrs | 2,574 (47%) | Drought |
| Mar 20, 2018 | <1 hr | 1,867 (34%) | Unnamed event |
| Nov 5, 2015 | 4 hrs | 1,839 (34%) | Unnamed event |
| Nov 6, 2015 | 1 hrs | 1,839 (34%) | Unnamed event |
Over the 12 years from 2014 to 2025, Guthrie County recorded 213 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Guthrie County started December 15, 2021 (Tornado), lasting 77 hours and leaving up to 2,666 customers without power (49% of the county) at its peak.
June has historically been the worst month for outages in Guthrie County, with 26 events recorded during that month across the dataset.
Based on this history, Guthrie County earns a Reliability Grade of C, placing it in the 59th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Guthrie County's outage profile
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Guthrie County.
| County | Grade | National percentile |
|---|---|---|
| Butler County | C | 59th |
| Webster County | C | 59th |
| Allamakee County | C | 58th |
| Johnson County | C | 58th |
| Polk County | B | 60th |
Most reliable counties in Iowa
The top 3 counties in Iowa by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clay County | A | 97th |
| Emmet County | A | 95th |
| Bremer County | A | 94th |
Least reliable counties in Iowa
The bottom 3 counties in Iowa by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Marshall County | F | 6th |
| Tama County | F | 12th |
| Jasper County | F | 14th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Guthrie County?
Between 2014 and 2025, Guthrie County recorded 213 outage events, averaging 3.0 hours each.
What is Guthrie County's reliability grade?
Guthrie County has a Reliability Grade of C, in the 59th national percentile.
What was the worst power outage in Guthrie County?
The worst outage on record started December 15, 2021 (Tornado), lasting 77 hours and affecting up to 2,666 customers.