Montmorency County Power Outage History
2014–2025 · Michigan
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 11, 2021 | 47 hrs | 3,842 (49%) | Thunderstorm Wind |
| Dec 16, 2021 | 94 hrs | 3,568 (45%) | High Wind |
| Jun 16, 2022 | 53 hrs | 2,724 (34%) | Unnamed event |
| Nov 5, 2022 | 48 hrs | 2,541 (32%) | Unnamed event |
| Feb 28, 2024 | 28 hrs | 1,975 (25%) | Unnamed event |
Over the 12 years from 2014 to 2025, Montmorency County recorded 679 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Montmorency County started August 11, 2021 (Thunderstorm Wind), lasting 47 hours and leaving up to 3,842 customers without power (49% of the county) at its peak.
June has historically been the worst month for outages in Montmorency County, with 91 events recorded during that month across the dataset.
Based on this history, Montmorency County earns a Reliability Grade of D, placing it in the 24th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Montmorency County's outage profile
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Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Montmorency County.
| County | Grade | National percentile |
|---|---|---|
| Allegan County | D | 25th |
| Macomb County | D | 25th |
| Gogebic County | D | 23rd |
| Midland County | D | 23rd |
| Wexford County | D | 22nd |
FAQ
How often does power go out in Montmorency County?
Between 2014 and 2025, Montmorency County recorded 679 outage events, averaging 3.6 hours each.
What is Montmorency County's reliability grade?
Montmorency County has a Reliability Grade of D, in the 24th national percentile.
What was the worst power outage in Montmorency County?
The worst outage on record started August 11, 2021 (Thunderstorm Wind), lasting 47 hours and affecting up to 3,842 customers.