massoutage

County annual report · FIPS 53061

2018 Snohomish County, WA Power Outage Report

In 2018, customers in Snohomish County, WA went without power for an average of 0.0 hours, a total of 15 customer-hours (Washington average 2.1 hours). That ranks 27th worst of 27 Washington counties and 2797th of 2,798 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
638,029 customers
Customer-hours out
15
Peak customers out
5
Outages ≥1,000 out
0
0 of 10,000+ · 2 total
Longest outage
3h
began March 29, 2018
Rank in state
27th/27
2797th of 2,798 US

Compared with WA, the US and 2017

Snohomish County, WA average hours without power per customer compared with state and national averages, 2018Snohomish County 0.0 hours, Washington average 2.1 hours, US average 5.6 hours, Snohomish County, 2017 0.0 hoursSnohomish CountySnohomish County0.0hWashington averageWashington average2.1hUS averageUS average5.6hSnohomish County, 2017Snohomish County, 20…0.0h
Use the arrow keys to read values.
Average hours without power per customer in 2018; last bar is this county in 2017.

Month by month

CSVJSON
Snohomish County, WA customer-hours without power by month, 2018Jan 0, Feb 0, Mar 15, Apr 0, May 0, Jun 0, Jul 0, Aug 0, Sep 0, Oct 0, Nov 0, Dec 00510150Jan0Feb15Mar0Apr0May0Jun0Jul0Aug0Sep0Oct0Nov0Dec
Use the arrow keys to read values.
Customer-hours; March was the worst month.

Snohomish County year over year

CSVJSON
Snohomish County, WA: average hours without power per customer by year2015: 0.0h; 2016: 0.0h; 2017: 0.0h; 2018: 0.0h, coverage 71%; 2019: 0.3h, coverage 86%; 2020: 1.9h, coverage 87%; 2021: 4.7h, coverage 87%; 2022: 9.6h, coverage 87%; 2023: 1.1h; 2024: 6.6h; 2025: 2.2h02.557.5100%50%100%0.0h20150.0h20160.0h20170.0h20180.3h20191.9h20204.7h20219.6h20221.1h20236.6h20242.2h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of Washington customers tracked each year.

Biggest outages in Snohomish County, 2018

The 2 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1March 29, 2018 16:30March 29, 2018 19:303h515
2February 1, 2018 14:45February 1, 2018 15:0015m10

Outage episodes by size in 2018: 0 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 2018, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI 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 71% of Washington's customers in 2018; 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, 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/). https://massoutage.com/reports/2018/washington/snohomish-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Snohomish County by year:2025202420232022202120202019201720162015
Live outages in Snohomish County2018 Washington report2018 US report