County annual report · FIPS 53061
2023 Snohomish County, WA Power Outage Report
In 2023, customers in Snohomish County, WA went without power for an average of 1.1 hours, a total of 719K customer-hours (Washington average 2.6 hours). That ranks 29th worst of 33 Washington counties and 2624th of 2,977 nationally.
Compared with WA, the US and 2022
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Snohomish County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 26, 2023 06:45 | February 27, 2023 06:15 | 23h 30m | 16,216 | 29K |
| 2 | October 26, 2023 05:15 | October 26, 2023 09:30 | 4h 15m | 11,625 | 3,080 |
| 3 | June 10, 2023 04:30 | June 10, 2023 09:30 | 5h | 9,191 | 17K |
| 4 | December 8, 2023 12:45 | December 9, 2023 02:45 | 14h | 8,540 | 18K |
| 5 | November 1, 2023 20:00 | November 2, 2023 00:15 | 4h 15m | 7,925 | 2,095 |
| 6 | February 20, 2023 21:30 | February 22, 2023 05:15 | 1d 7h | 7,217 | 46K |
| 7 | March 28, 2023 13:30 | March 29, 2023 09:30 | 20h | 7,210 | 20K |
| 8 | August 20, 2023 14:45 | August 20, 2023 16:30 | 1h 45m | 7,172 | 5,384 |
| 9 | December 27, 2023 01:00 | December 28, 2023 09:30 | 1d 8h | 7,146 | 30K |
| 10 | June 14, 2023 00:45 | June 15, 2023 10:15 | 1d 9h | 6,163 | 14K |
Outage episodes by size in 2023: 231 reached 100+ customers, 91 reached 1,000+ customers, 2 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 2023, 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 | 2023 | 2.0 hrs | 1.18 | 1.9 hrs | 1.10 |
| 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 2023; 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, 2023, 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/2023/washington/snohomish-county