County annual report · FIPS 53061
2024 Snohomish County, WA Power Outage Report
In 2024, customers in Snohomish County, WA went without power for an average of 6.6 hours, a total of 4.2M customer-hours (Washington average 12.1 hours). That ranks 16th worst of 34 Washington counties and 1324th of 2,990 nationally.
Compared with WA, the US and 2023
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Snohomish County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 19, 2024 22:00 | November 28, 2024 00:30 | 8d 2h | 108,734 | 2.9M |
| 2 | December 18, 2024 08:30 | December 18, 2024 17:45 | 9h 15m | 57,220 | 101K |
| 3 | March 16, 2024 23:00 | March 17, 2024 04:00 | 5h | 21,431 | 10K |
| 4 | June 2, 2024 19:00 | June 5, 2024 14:45 | 2d 19h | 19,444 | 176K |
| 5 | November 4, 2024 11:30 | November 6, 2024 05:15 | 1d 17h | 19,125 | 82K |
| 6 | December 14, 2024 12:00 | December 15, 2024 20:15 | 1d 8h | 18,249 | 102K |
| 7 | August 18, 2024 04:30 | August 19, 2024 22:15 | 1d 17h | 10,621 | 40K |
| 8 | March 9, 2024 21:15 | March 11, 2024 02:30 | 1d 5h | 10,419 | 66K |
| 9 | December 13, 2024 18:15 | December 14, 2024 09:30 | 15h 15m | 7,858 | 19K |
| 10 | April 13, 2024 12:30 | April 13, 2024 17:15 | 4h 45m | 7,535 | 6,211 |
Outage episodes by size in 2024: 208 reached 100+ customers, 91 reached 1,000+ customers, 8 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Snohomish County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| PUD No 1 of Snohomish County | 2024 | 10.3 hrs | 2.48 | 3.0 hrs | 1.56 |
| Bonneville Power Administration | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Washington's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 638,029 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Snohomish County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Snohomish County, WA annual power outage report, 2024, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/washington/snohomish-county