massoutage

County annual report · FIPS 30045

2024 Judith Basin County, MT Power Outage Report

In 2024, customers in Judith Basin County, MT went without power for an average of 34.8 hours, a total of 35K customer-hours (Montana average 8.5 hours). That ranks 3rd worst of 51 Montana counties and 279th of 2,990 nationally.

Summary data CSVJSON
Avg hrs / customer
34.8
1,006 customers
Customer-hours out
35K
Peak customers out
1,351
Outages ≥1,000 out
1
0 of 10,000+ · 72 total
Longest outage
4d 1h
began May 8, 2024
Rank in state
3rd/51
279th of 2,990 US

Compared with MT, the US and 2023

Judith Basin County, MT average hours without power per customer compared with state and national averages, 2024Judith Basin County 34.8 hours, Montana average 8.5 hours, US average 12.6 hours, Judith Basin County, 2023 3.6 hoursJudith Basin CountyJudith Basin County34.8hMontana averageMontana average8.5hUS averageUS average12.6hJudith Basin County, 2023Judith Basin County,…3.6h
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Average hours without power per customer in 2024; last bar is this county in 2023.

Month by month

CSVJSON
Judith Basin County, MT customer-hours without power by month, 2024Jan 57, Feb 21, Mar 448, Apr 19, May 26K, Jun 828, Jul 17, Aug 92, Sep 41, Oct 5,846, Nov 1,612, Dec 543010k20k30k57Jan21Feb448Mar19Apr26KMay828Jun17Jul92Aug41Sep5,846Oct1,612Nov543Dec
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Customer-hours; May was the worst month.

Judith Basin County year over year

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Judith Basin County, MT: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data; 2019: no data; 2020: 7.5h, coverage 76%; 2021: 15.3h, coverage 76%; 2022: 9.7h, coverage 76%; 2023: 3.6h; 2024: 34.8h; 2025: 14.5h0102030400%50%100%n/a2015n/a2016n/a2017n/a2018n/a20197.5h202015.3h20219.7h20223.6h202334.8h202414.5h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

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

Biggest outages in Judith Basin County, 2024

The 10 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1May 8, 2024 01:00May 12, 2024 02:454d 1h1,35125K
2October 5, 2024 03:15October 7, 2024 20:452d 17h6485,711
3November 3, 2024 18:30November 4, 2024 02:007h 30m4121,505
4December 30, 2024 03:00December 30, 2024 06:303h 30m225524
5March 28, 2024 20:30March 29, 2024 02:456h 15m222448
6June 24, 2024 13:30June 24, 2024 20:307h139791
7November 19, 2024 16:30November 19, 2024 18:001h 30m4060
8January 30, 2024 20:30January 30, 2024 22:001h 30m1624
9September 12, 2024 03:45September 12, 2024 05:301h 45m1216
10October 8, 2024 19:30October 9, 2024 00:305h1257

Outage episodes by size in 2024: 6 reached 100+ customers, 1 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 Judith Basin County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
NorthWestern Energy LLC - (MT)20243.9 hrs1.302.0 hrs0.95
Fergus Electric Coop, Inc-----
Sun River 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 n/a of Montana's customers in 2024; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 1,006 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. Judith Basin County has data for 2020–2025.

Cite this report

MassOutage (massoutage.com), Judith Basin County, MT annual power outage report, 2024, 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/2024/montana/judith-basin-county

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