County annual report · FIPS 41059
2018 Umatilla County, OR Power Outage Report
In 2018, customers in Umatilla County, OR went without power for an average of 3.7 hours, a total of 161K customer-hours (Oregon average 2.0 hours). That ranks 5th worst of 34 Oregon counties and 1315th of 2,798 nationally.
Compared with OR, the US and 2017
Coverage line is EAGLE-I's share of Oregon customers tracked each year.
Biggest outages in Umatilla County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 16, 2018 04:00 | July 16, 2018 21:00 | 17h | 13,365 | 16K |
| 2 | February 17, 2018 20:45 | February 18, 2018 11:00 | 14h 15m | 12,763 | 34K |
| 3 | May 3, 2018 22:15 | May 4, 2018 13:30 | 15h 15m | 7,083 | 4,720 |
| 4 | September 20, 2018 22:45 | September 21, 2018 12:45 | 14h | 5,031 | 4,606 |
| 5 | February 19, 2018 23:30 | February 20, 2018 01:30 | 2h | 4,587 | 1,407 |
| 6 | May 7, 2018 14:15 | May 8, 2018 01:45 | 11h 30m | 4,341 | 1,225 |
| 7 | July 30, 2018 21:15 | August 1, 2018 01:45 | 1d 4h | 4,196 | 1,168 |
| 8 | May 17, 2018 02:30 | May 17, 2018 03:45 | 1h 15m | 3,597 | 3,033 |
| 9 | May 16, 2018 18:00 | May 16, 2018 21:30 | 3h 30m | 3,272 | 1,552 |
| 10 | May 9, 2018 02:15 | May 11, 2018 03:15 | 2d 1h | 3,005 | 16K |
Outage episodes by size in 2018: 66 reached 100+ customers, 18 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 Umatilla County reported on EIA Form 861 for 2018, 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| Columbia Power Coop Assn Inc | 2018 | 1.6 hrs | - | 1.6 hrs | - |
| Columbia Rural Elec Assn, Inc | 2018 | 2.6 hrs | 0.95 | 2.6 hrs | 0.95 |
| Umatilla Electric Coop Assn | 2018 | 3.9 hrs | 2.33 | 3.2 hrs | 2.13 |
| Bonneville Power Administration | - | - | - | - | - |
| Columbia Basin Elec Cooperative, Inc | - | - | - | - | - |
| City of Hermiston | - | - | - | - | - |
| City of Milton-Freewater- (OR) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 75% of Oregon's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 43,275 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. Umatilla County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Umatilla County, OR annual power outage report, 2018, 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/2018/oregon/umatilla-county