A power outage affected multiple neighborhoods in Longmont, Colorado, on Monday, October 19, 2026, leaving residents without electricity and reportedly disrupting traffic signals and some local businesses. Community reports indicated that power began returning during the afternoon, with several residents reporting restoration between approximately 3:30 and 3:40 p.m.
The outage prompted residents to share updates online as electricity went out across several parts of the city. Reports came from neighborhoods near U.S. Highway 287, Francis Street, 11th Street, Hover Street, and areas around Longmont High School.
Although residents reported that electricity had returned to many affected locations, the cause of the outage and the total number of customers affected have not been independently confirmed.
Longmont Power Outage Affects Multiple Neighborhoods
Reports shared by residents on Monday described electricity disruptions across several areas of Longmont.
One resident reported that an apartment complex near Walmart along U.S. Highway 287 had suddenly lost power. Other residents subsequently reported similar problems in their neighborhoods, suggesting that the disruption extended beyond a single building.
Locations mentioned in the community reports included:
- The area around U.S. Highway 287 and Walmart.
- Francis Street, particularly around 11th Street and nearby blocks.
- Neighborhoods near Longmont High School.
- Areas around Hover Street and 21st Street.
- The vicinity of 21st Street and Alpine Street.
- Parts of Main Street and the neighborhood near 23rd Street and Highway 66.
These locations come from individual resident reports rather than an official utility map confirming the complete outage boundaries. The precise number of affected streets and households therefore remains uncertain.
The reports nevertheless indicate that the disruption was noticeable across multiple parts of the city during the afternoon.
Residents Report Traffic Signal Problems
The outage appeared to affect more than household electricity.
A Longmont resident reported that traffic signals at the intersection of 17th Avenue and Francis Street were not working during the disruption. The same report indicated that signals at Hoover Street and 17th Avenue were still functioning at that time.
Another resident reported that a nearby Safeway location had lost power.
These accounts have not been independently verified through an official traffic or business announcement. However, they illustrate the potential effects of a local electricity disruption on road safety and daily activities.
When traffic signals stop working, drivers should approach affected intersections cautiously and follow applicable traffic rules. Motorists should not assume an intersection is safe simply because other vehicles are moving through it.
When Did Power Return in Longmont?
Several residents reported that their electricity was restored during the afternoon.
An update posted in a local online discussion said power had returned by approximately 3:33 p.m. Another resident reported that service was restored around 3:30 p.m., while a separate update placed restoration at roughly 3:40 p.m.
These reports suggest that many of the affected residents regained electricity within the afternoon. However, the updates reflect individual experiences and do not establish that every affected customer had service restored at the same time.
Electricity restoration can vary between streets and properties, depending on the extent of the disruption and the equipment involved.
As of the latest information reviewed for this article, the reports point to widespread restoration among the residents who posted updates, but a comprehensive official restoration statement was not located.
What Caused the Longmont Power Outage?
The cause of the October 19 outage remains unconfirmed.
Residents described losing electricity in different parts of Longmont, but the reports did not establish whether the disruption resulted from equipment failure, damage to electrical infrastructure, a fault on a power line, or another technical issue.
One resident reported seeing a utility truck in the area while electricity was out. That observation suggests utility personnel may have been working nearby, but it does not establish the cause of the outage or confirm the precise repair work being performed.
Longmont Power & Communications, the city’s municipal electric utility, monitors its electricity network and provides an official channel for reporting outages.
According to the city’s utility guidance, outages affecting a large number of customers or lasting for a significant period may be reported through its electric outage status page. Smaller outages may not necessarily appear as prominently on public updates.
Until the utility releases information identifying the cause, any explanation for Monday’s disruption would be speculative.
Longmont Power & Communications and Outage Reporting
Longmont Power & Communications provides electricity to customers within its service area and monitors the local system for service interruptions.
The utility asks customers experiencing a power outage to report it by telephone. Reports help the utility identify affected locations and respond to problems that may not be immediately apparent through remote monitoring.
Customers can report an electric outage using the following numbers:
- Power outage line: 303-776-0011
- Main Longmont Power & Communications number: 303-651-8386
The utility accepts outage reports around the clock. Residents can also consult the city’s official electric outage status page for updates when larger interruptions occur.
An important distinction is that third-party outage trackers may not display all outages affecting Longmont. The PowerOutage.us city page, for example, indicates that Longmont Power serves the city but does not provide live, geographically detailed outage data to that tracker. Consequently, a third-party map showing no active outages should not automatically be interpreted as proof that every customer has electricity.
What Residents Should Do During a Power Outage
Although residents reported power returning across affected locations on Monday, future disruptions may occur without advance warning.
Residents experiencing an outage should report it directly to the utility rather than relying exclusively on online discussions. It is also advisable to keep mobile phones charged, maintain a flashlight and spare batteries, and use surge protection for sensitive electronic equipment.
Anyone who encounters a damaged power line should stay well away from it and contact the utility or emergency services as appropriate. Downed wires should always be treated as energized, even when they appear inactive.
Drivers should also remain alert if traffic signals lose power. Following safe intersection procedures can help reduce the risk of collisions while normal traffic control is unavailable.
Latest Update on the Longmont Power Outage
As of October 19, 2026, community reports indicate that the power outage affected multiple locations in Longmont, including areas near Highway 287, Francis Street, Hover Street, and Longmont High School.
Several residents reported that electricity returned between approximately 3:30 and 3:40 p.m. local time. However, a complete official account confirming the cause, total number of affected customers, and final restoration time for all locations was not located during this review.
The reported outage appears to have been followed by restoration in many of the areas discussed by residents. Further confirmation from Longmont Power & Communications would be needed to establish the full scope of the incident.
This article may be updated if the city or utility publishes additional information.
Key Facts
| Detail | Information |
|---|---|
| Incident | Power outage |
| Location | Longmont, Colorado |
| Date | Monday, October 19, 2026 |
| Areas mentioned | Highway 287, Francis Street, 11th Street, Hover Street, and areas near Longmont High School |
| Reported effects | Loss of electricity and reported traffic signal disruption |
| Reported restoration | Several residents reported power returning around 3:30 to 3:40 p.m. |
| Official cause | Not confirmed in the sources reviewed |
| Total customers affected | Not verified |
| Utility | Longmont Power & Communications |
| Current status | Community reports indicate restoration in multiple locations; complete official confirmation remains unavailable |
Disclaimer: This report combines publicly available utility information with local residents’ accounts of the outage. Individual reports help establish where disruptions were experienced but do not independently confirm the full outage area, cause, or restoration status for every customer. Official utility updates should be consulted for authoritative information.