Falls Church County Power Outage History
2015–2025 · Virginia
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 10, 2021 | 50 hrs | 5,829 (86%) | Thunderstorm Wind |
| Nov 24, 2020 | 1 hrs | 3,257 (48%) | Unnamed event |
| Nov 23, 2020 | 3 hrs | 3,251 (48%) | Unnamed event |
| Apr 22, 2023 | 18 hrs | 3,238 (48%) | Unnamed event |
| Sep 8, 2023 | <1 hr | 3,227 (48%) | Unnamed event |
Over the 11 years from 2015 to 2025, Falls Church County recorded 366 distinct power outage events, averaging 3.4 hours per event.
The single worst outage on record in Falls Church County started August 10, 2021 (Thunderstorm Wind), lasting 50 hours and leaving up to 5,829 customers without power (86% of the county) at its peak.
June has historically been the worst month for outages in Falls Church County, with 44 events recorded during that month across the dataset.
Based on this history, Falls Church County earns a Reliability Grade of D, placing it in the 33rd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Falls Church County.
| County | Grade | National percentile |
|---|---|---|
| Galax County | D | 31st |
| Madison County | D | 34th |
| Colonial Heights County | D | 34th |
| Fairfax County | D | 30th |
| Petersburg County | D | 35th |
Most reliable counties in Virginia
The top 3 counties in Virginia by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Manassas Park County | A | 96th |
| Radford County | A | 95th |
| Winchester County | A | 93rd |
Least reliable counties in Virginia
The bottom 3 counties in Virginia by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Bland County | F | 1st |
| Floyd County | F | 1st |
| Grayson County | F | 2nd |
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 Falls Church County?
Between 2015 and 2025, Falls Church County recorded 366 outage events, averaging 3.4 hours each.
What is Falls Church County's reliability grade?
Falls Church County has a Reliability Grade of D, in the 33rd national percentile.
What was the worst power outage in Falls Church County?
The worst outage on record started August 10, 2021 (Thunderstorm Wind), lasting 50 hours and affecting up to 5,829 customers.