Power outages in Manderson, WY

Live outages for Manderson and the surrounding area, updated every 10 minutes. Manderson has 90 residents.

Right now

Outages reported
iNormal: fewer than 0.1% of customers out. Elevated: 0.1% or more. Major outage: 1% or more.
31customers without power in Big Horn County
iA customer is one electric account, usually one home or business, not one person. Utilities count outages this way.
Share of customers unknown
iAt least one utility here doesn't publish how many customers it serves in this area, so we can't show a percentage.
Updated 8 min ago
iWe check every utility's outage data every 10 minutes. Each utility updates its own map on its own schedule, usually every 5 to 15 minutes.
PacifiCorp (Pacific Power / Rocky Mountain Power) doesn't publish a count for Manderson itself; see its ZIP codes below.

Outage map

Outage locations not published
MandersonBig Horn CountyPacifiCorp (Pacific Power / Rocky Mountain Power) publishes totals only, not outage locations.
iSome utilities publish only how many customers are out, not where. Their outages are in the counts but can't be drawn on the map.

Outage history in Big Horn County, which includes Manderson

2014–2025 record

Big Horn County averaged 10.7 significant outages a year in 2023–2025, about typical for Wyoming counties.

In the 12 months to December 2025, there were 14. Half were over within 60 minutes; the longest lasted 4.5 hours, starting June 12, 2025.

The largest on record began July 9, 2021, with 2,303 customers out at once.

Outages are most common in April.

10.7significant outages a year (2023–2025)
iAt least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.
1.5 hourstypical (median) length
iHalf of significant outages here ended sooner than this, and half lasted longer.
15 hourslongest on record (July 2018)
2,303most customers out at once
Largest events (start)Peak outLasted
iHow long this area stayed at or above the significant-outage line, not how long any one home was without power.
Customer-hours
iCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours.
July 9, 20212,30345 minutes1,289
August 1, 20202,2793 hours5,477
April 8, 20211,7712 hours3,172
October 15, 20181,76545 minutes867
November 19, 20251,6753.5 hours3,126

Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).

iFrom EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.

If your power is out

Report it to your utility

  • PacifiCorp (Pacific Power / Rocky Mountain Power): outage map and reporting
  • Stay at least 35 feet from downed power lines and report them right away.

Food safety

  • 0–4 hKeep the fridge closed. It keeps food cold for about 4 hours.
  • 4 h+Throw out meat, dairy and leftovers that have been above 40°F for more than 2 hours.
  • 24 hA half-full freezer holds about 24 hours if kept closed.
  • 48 hA full freezer holds about 48 hours.

Generators, heat and cold

  • Run generators outside only, at least 20 feet from windows and doors. Never in a garage.
  • Use a battery-powered carbon monoxide alarm.
  • Never heat your home with a gas stove or oven.

Manderson is in

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