County annual report · FIPS 53061
2015 Snohomish County, WA Power Outage Report
In 2015, customers in Snohomish County, WA went without power for an average of 0.0 hours, a total of 129 customer-hours (Washington average 9.1 hours). That ranks 21st worst of 23 Washington counties and 2464th of 2,484 nationally.
Compared with WA, the US
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Snohomish County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 21, 2015 23:30 | October 22, 2015 02:30 | 3h | 146 | 51 |
| 2 | August 30, 2015 01:00 | August 30, 2015 03:45 | 2h 45m | 8 | 7 |
| 3 | August 29, 2015 23:30 | August 30, 2015 00:00 | 30m | 5 | 2 |
| 4 | August 29, 2015 22:15 | August 29, 2015 22:45 | 30m | 4 | 2 |
| 5 | September 1, 2015 20:15 | September 2, 2015 03:45 | 7h 30m | 4 | 25 |
| 6 | August 5, 2015 21:15 | August 5, 2015 21:30 | 15m | 3 | 1 |
| 7 | October 26, 2015 16:00 | October 26, 2015 19:45 | 3h 45m | 3 | 11 |
| 8 | August 30, 2015 09:30 | August 31, 2015 12:15 | 1d 2h | 1 | 27 |
| 9 | October 10, 2015 19:30 | October 10, 2015 19:45 | 15m | 1 | 0 |
| 10 | November 17, 2015 22:00 | November 17, 2015 22:15 | 15m | 1 | 0 |
Outage episodes by size in 2015: 1 reached 100+ customers, 0 reached 1,000+ customers, 0 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 2015, 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 |
|---|---|---|---|---|---|
| Bonneville Power Administration | - | - | - | - | - |
| PUD No 1 of Snohomish County | - | - | - | - | - |
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 2015; 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, 2015, 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/). https://massoutage.com/reports/2015/washington/snohomish-county