Fire Weather Watches across the Southwest have been upgraded to Red Flag Warnings, as forecasters confirmed Friday and Saturday will bring the most dangerous fire weather conditions of the summer across southern California, Nevada and Arizona.
Las Vegas has gone 120 consecutive days without measurable rain, Nevada’s biggest fire of 2026 is actively burning, and fires near Sedona are already forcing evacuations.
California and Nevada: Upgraded to Red Flag Warning Friday Through Saturday
The National Weather Service in Las Vegas upgraded its Fire Weather Watch to a Red Flag Warning Thursday morning, in effect from 11 AM PDT Friday through 11 PM PDT Saturday across southern Nevada — including Clark County (the Las Vegas metro), the Sheep Range, the Spring Mountains, Lake Mead National Recreation Area, and the surrounding desert zones of Nye, Lincoln and Esmeralda counties.
In California, the same warning covers Death Valley National Park, the Mojave Desert including Morongo Valley and Yucca Valley, and the Lower Colorado River Valley. Forecast conditions: southwest winds 20 to 30 mph with gusts of 40 to 50 mph, humidity dropping to 5 to 15 percent.
The NWS Reno office simultaneously upgraded Pershing, Churchill and Mineral counties to a Red Flag Warning through Saturday 11 PM. A separate Sierra Front warning covers Carson City, Douglas County and southern Washoe County through the same period.
Arizona: The Longest Warning Window — Through Sunday Evening
The most expansive warning in the package belongs to Arizona. The NWS Flagstaff office issued a Red Flag Warning covering all of northern Arizona — the Kaibab Plateau, Grand Canyon Country, Coconino Plateau, Yavapai County Mountains, the Mogollon Rim (western and eastern), the White Mountains, Oak Creek and Sycamore Canyons, the Navajo Nation plateaus and mesas, and the Little Colorado River Valley — from noon Friday MDT through 9 PM Sunday MDT. That’s a three-day warning window covering portions of the Apache-Sitgreaves, Coconino, Kaibab, Prescott and Tonto national forests.
Conditions worsen through the weekend: winds of 15 to 25 mph with gusts to 40 mph Friday, escalating to 20 to 30 mph with gusts to 50 mph Saturday and Sunday, with humidity as low as 7 percent in desert areas. The Flagstaff office warned that “winds may damage power lines, resulting in new fire starts.” Near Yuma, the NWS Phoenix office upgraded the Lower Colorado River Valley to a Red Flag Warning with humidity as low as 4 percent — the most extreme reading in the entire warning package.
Fires Already Burning Near Sedona and Globe
The warnings arrive on top of active fires with evacuations already underway. The Pocket Fire on Coconino National Forest, 7 miles north of Sedona, is producing moderate fire behavior with single-tree torching and has numerous structures threatened with mandatory evacuations in effect.
The Sycamore Fire on Tonto National Forest, 15 miles north of Globe, is active with wind-driven runs and is threatening structures and energy infrastructure — including power transmission corridors. The weekend’s forecast wind event arriving directly over these active fires creates the most dangerous possible scenario: strengthening gusts pushing fires that are already established across fuels that have not seen rain in months.
Las Vegas: 120 Days Without Rain and Nevada’s Biggest Fire of 2026
Las Vegas will complete 120 consecutive days without measurable rainfall by end of day Friday — the 4th warmest June on record for the city. In Lincoln County just northeast of the city, the Grapevine and Kane Springs fires have combined to burn 34,604 acres and are only 25 percent contained, according to fire tracking data updated June 24.
Roughly one-third of all active national fire personnel are currently deployed to the Great Basin region.
With the Fourth of July approaching, News3LV warned that even Clark County’s permitted “Safe and Sane” fireworks should not be used under current conditions.
What to Avoid This Weekend
No campfires outside established recreation sites, no target shooting, no fireworks, no outdoor burning of any kind. Visitors to Grand Canyon National Park, Lake Mead NRA, Death Valley and Sedona-area trails should carry water, have an evacuation plan and a way to receive emergency alerts. “One less spark, one less wildfire.” For current fire restrictions in Arizona, visit wildlandfire.az.gov/fire-restrictions. Track conditions at weather.gov/vef, weather.gov/fgz and weather.gov/rev.
