County annual report · FIPS 53061
2020 Snohomish County, WA Power Outage Report
In 2020, customers in Snohomish County, WA went without power for an average of 1.9 hours, a total of 1.2M customer-hours (Washington average 4.2 hours). That ranks 28th worst of 37 Washington counties and 2294th of 3,019 nationally.
Compared with WA, the US and 2019
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Snohomish County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 31, 2020 14:45 | February 3, 2020 08:00 | 2d 17h | 23,234 | 202K |
| 2 | August 31, 2020 14:30 | September 1, 2020 13:00 | 22h 30m | 16,808 | 20K |
| 3 | October 13, 2020 12:00 | October 15, 2020 02:00 | 1d 14h | 13,607 | 97K |
| 4 | January 12, 2020 15:30 | January 18, 2020 11:15 | 5d 19h | 13,033 | 352K |
| 5 | November 4, 2020 01:45 | November 6, 2020 06:45 | 2d 5h | 7,678 | 39K |
| 6 | July 20, 2020 13:15 | July 20, 2020 17:45 | 4h 30m | 7,668 | 1,960 |
| 7 | September 24, 2020 13:15 | September 25, 2020 01:00 | 11h 45m | 7,652 | 15K |
| 8 | January 12, 2020 10:00 | January 12, 2020 13:30 | 3h 30m | 6,162 | 12K |
| 9 | June 30, 2020 14:30 | July 1, 2020 15:15 | 1d | 5,900 | 12K |
| 10 | November 13, 2020 17:00 | November 14, 2020 12:45 | 19h 45m | 5,577 | 21K |
Outage episodes by size in 2020: 205 reached 100+ customers, 92 reached 1,000+ customers, 4 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 2020, 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 | 2020 | 4.3 hrs | 1.69 | 2.2 hrs | 1.25 |
| 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 87% of Washington's customers in 2020; 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, 2020, 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/2020/washington/snohomish-county