County annual report · FIPS 53075
2018 Whitman County, WA Power Outage Report
In 2018, customers in Whitman County, WA went without power for an average of 0.6 hours, a total of 28K customer-hours (Washington average 2.1 hours). That ranks 18th worst of 27 Washington counties and 2465th of 2,798 nationally.
Compared with WA, the US and 2017
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Whitman 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 24, 2018 20:00 | July 24, 2018 21:30 | 1h 30m | 1,452 | 503 |
| 2 | November 15, 2018 14:45 | November 15, 2018 15:00 | 15m | 1,390 | 348 |
| 3 | November 15, 2018 17:45 | November 15, 2018 18:00 | 15m | 1,390 | 348 |
| 4 | October 2, 2018 18:00 | October 2, 2018 18:15 | 15m | 1,354 | 339 |
| 5 | November 2, 2018 00:45 | November 2, 2018 02:30 | 1h 45m | 1,247 | 781 |
| 6 | October 31, 2018 17:30 | October 31, 2018 20:15 | 2h 45m | 859 | 1,719 |
| 7 | November 6, 2018 18:45 | November 6, 2018 20:15 | 1h 30m | 638 | 637 |
| 8 | August 11, 2018 06:30 | August 11, 2018 14:00 | 7h 30m | 611 | 4,437 |
| 9 | September 25, 2018 13:15 | September 25, 2018 19:45 | 6h 30m | 611 | 1,517 |
| 10 | October 7, 2018 17:00 | October 7, 2018 19:30 | 2h 30m | 610 | 1,071 |
Outage episodes by size in 2018: 22 reached 100+ customers, 5 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 Whitman 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 |
|---|---|---|---|---|---|
| Avista Corp | 2018 | 2.6 hrs | 0.89 | 2.2 hrs | 0.81 |
| Inland Power & Light Company | 2018 | 3.3 hrs | 1.55 | 3.3 hrs | 1.55 |
| Clearwater Power Company | 2018 | 16.6 hrs | 3.16 | 12.0 hrs | 2.91 |
| Avista Corp,avista | - | - | - | - | - |
| Big Bend Electric Coop, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 71% of Washington's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 47,409 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. Whitman County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Whitman County, WA 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/washington/whitman-county