Power Out Map
– 0% of Sherman out 0 customers out in Nebraska

Power outage history

Sherman County Nebraska

The outage record here is too thin for a reliable yearly average. Raw events are listed below.

Worst outage on record Dec 11, 2025 29% of customers out · 90% back in 11 hours
Hours without power, average customer per year –h / yr State average 4.8 h · national median 6.6 h
Major outages a year – Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 12hours Dec 11, 2025, over 1% of customers out
Outage hours on storm days 18% Share falling on days with a NOAA storm report here
Worst year –
Electricity customers 2,413 ORNL customer model · 0 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Sherman's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

Sherman, hours without power per customer

ShermanUS median countyNebraska average
0 2 4 6 8 ’19 ’20 ’21 ’22 ’23 ’24 ’25 US 6.6 NE 4.8

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Dec 11, 2025 No storm report 711 29% 12 h 11 h 7.5k
Aug 7, 2022 No storm report 718 30% 1.5 h 1.5 h 1.1k
Jul 8, 2020 Thunderstorms 244 10% 5.0 h 3.8 h 971
Mar 19, 2025 Winter storm 126 5% 5.2 h 5.0 h 660
Sep 5, 2025 No storm report 126 5% 4.8 h 4.8 h 598
Feb 20, 2025 Winter storm 125 5% 4.5 h 4.5 h 559
Nov 21, 2021 No storm report 123 5% 4.5 h 4.5 h 554
Oct 16, 2022 No storm report 718 30% 48 min 48 min 538
May 30, 2022 Thunderstorms 124 5% 4.2 h 13 h 527
May 9, 2021 No storm report 242 10% 2.0 h 2.0 h 484
Aug 8, 2022 No storm report 717 30% 30 min 1.2 h 358
Sep 19, 2025 No storm report 126 5% 2.8 h 12 h 346

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +4h 90% by +4h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Sherman from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 82%
  • Thunderstorms 11%
  • Winter storm 7.1%

Who keeps the lights on

Utilities serving Sherman

As each utility reports to the Energy Information Administration for its whole Nebraska territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Nebraska Public Power District Political Subdivision 195 77 0.90 10.9 74k
Loup Valleys Rural P P D NE – – – 11.9 43k
Dawson Power District Political Subdivision 157 106 – 11.3 16k
Custer Public Power District Political Subdivision 2 2 0.72 13.1 4.7k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

  • Buffalo 0.7 h
  • Sherman (this county) – h

Across Nebraska

Where it is darkest

Hours / yr64+

All Nebraska counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 2,413 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →