Humboldt CountyPower Outage History
What this grade means
(How grades are calculated)Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 24, 2016 | 16 hrs | 5,243 (84%) | Winter Storm |
| Feb 24, 2017 | 8 hrs | 3,544 (57%) | Blizzard |
| Jun 25, 2025 | <1 hr | 2,872 (46%) | Tornado |
| Dec 16, 2021 | 23 hrs | 2,848 (46%) | Tornado |
| Apr 18, 2020 | <1 hr | 2,281 (37%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Humboldt County, Iowa that day.
Over the 11 years from 2015 to 2025, Humboldt County recorded 361 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Humboldt County started March 24, 2016 (Winter Storm), lasting 16 hours and leaving up to 5,243 customers without power (84% of the county) at its peak.
June has historically been the worst month for outages in Humboldt County, with 48 events recorded during that month across the dataset.
Based on this history, Humboldt County earns a Reliability Grade of B, placing it in the 75th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Humboldt County.
| County | Grade | National percentile |
|---|---|---|
| Floyd County | B | 75th |
| Montgomery County | B | 74th |
| Taylor County | B | 74th |
| Monona County | B | 74th |
| Dallas County | B | 76th |
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 Humboldt County?
Between 2015 and 2025, Humboldt County recorded 361 outage events, averaging 1.9 hours each.
What is Humboldt County's reliability grade?
Humboldt County has a Reliability Grade of B, in the 75th national percentile.
What was the worst power outage in Humboldt County?
The worst outage on record started March 24, 2016 (Winter Storm), lasting 16 hours and affecting up to 5,243 customers.