Island

Island Fire Report - August 04, 2026

Fire Start, Size and Growth

Start Date/Time/Location: The Island Fire was first reported at approximately 9:17 p.m. on Saturday, July 25, 2026. It is burning in La Paz County, Arizona, roughly 25 miles southwest of Ehrenberg and 7 miles south of Cibola, within the Cibola National Wildlife Refuge.
Size and Containment: As of the latest updates over the past 72 hours, the fire has burned 3,145 acres and is currently 87% contained.
Fuels, Growth and Rate of Spread: The fire initially spread rapidly through dense refuge vegetation, including two-foot brush and six-foot chaparral, growing at an average rate of over 1,600 acres per day during its initial run. Fire behavior has since moderated significantly, with crews observing minimal activity characterized by creeping and torching.
Containment Efforts: The fire is being managed under a Type 3 Incident structure with approximately 85 personnel assigned. Firefighters have successfully established line containment around the perimeter using dozers, hand crews, and back-burning operations. The incident has now transitioned into the "mop-up" phase, and crews are downsizing as the situation stabilizes. The estimated cost of the firefighting effort is between $100,000 and $250,000.

Emergency Information

Evacuations and Sheltering:
Mandatory Evacuation Orders: There are currently no mandatory evacuation orders in place.
Evacuation Warnings: No evacuation warnings have been issued for this incident.
Evacuation Shelters and Information: Because there are no evacuation orders or warnings, no shelters have been established, and the estimated number of people impacted by evacuations is zero.

Road and Infrastructure Closures:

• Hart Mine Road: Closed at the Cibola National Wildlife Refuge boundary.
• Cibola National Wildlife Refuge: The refuge's Island Management Unit is closed to the public.
• Bridge Closure: The historic Hart Mine Road Bridge (also known as the Cibola Bridge or Island Unit Bridge) was severely damaged by the fire and has collapsed into the Colorado River. The area is completely closed to pedestrians, motorists, and boaters.

For more information, visit:

• Arizona Department of Forestry and Fire Management
• InciWeb - Incident Information System
• La Paz County Emergency Management

Current Impact

Impacts:
Injuries and Fatalities: There have been no injuries or fatalities reported in connection with the Island Fire.
Structures Impacted: The Hart Mine Road Bridge was consumed by the fire and collapsed into the Colorado River. Nearby alfalfa fields and agricultural lands have also sustained damage.
School and Business Closures: No specific school or business closures have been reported, though local agricultural operations are severely impacted.
Notable Impacts: The destruction of the Hart Mine Road Bridge has severed a critical arterial link connecting agricultural lands in Arizona and California. This has left local farming communities isolated and severely disrupted daily transit for agricultural workers and wildlife managers.

Safety Concerns:
Power Outages: No major power outages have been reported in connection with this fire.
Water Safety: Debris from the collapsed timber bridge poses a significant hazard in the Colorado River. Multi-agency river safety teams have deployed floating buoy barriers and signs to restrict access and mark dangerous zones. Boaters and pedestrians must avoid the area.
Burn Bans: Fire danger in the region remains "very high" to "extreme." Residents should adhere to all local burn bans and fire restrictions.
Air Quality: Smoke may still be noticeable in surrounding areas. Sensitive groups, particularly those with respiratory conditions, are advised to limit their time outside when smoke is present.

Ongoing Outlook

Containment Projections: With containment at 87%, crews have made excellent progress over the last 72 hours. Firefighters are currently in the mop-up phase and are beginning to demobilize resources as the incident winds down. Full containment is expected soon as crews secure the remaining open fire lines.
Weather and Wind Warnings: Firefighters continue to work under extreme summer heat conditions, low humidity (around 6%), and gusty winds ranging from 7 to 15 mph. The combination of high temperatures and wind continues to pose a persistent risk for fire activity across the region.

Cause and the Role of Weather and Climate

Cause: The official cause of the Island Fire remains under investigation. Local officials noted that the fire started on the California side of the river before spreading to the Arizona side of the refuge, with some reports indicating lightning strikes in the area around the time of ignition.
Weather and Climate: The fire was heavily fueled by extreme summer heat and dry vegetation typical of the region's pre-monsoon climate. High temperatures and gusty winds exacerbated the initial rapid spread of the flames and continue to pose physical challenges for firefighting personnel on the ground.

For more information, visit:

• InciWeb - Incident Information System
• Arizona Department of Forestry and Fire Management
• U.S. Fish & Wildlife Service - Cibola National Wildlife Refuge