Arizona
Dangerous fire weather leads to central Arizona campfire restrictions
Federal and state officials imposed new fire restrictions across a large portion of central Arizona ahead of a weekend forecasted to bring hot, dry winds that could increase wildfire danger.
On Friday, May 15, Tonto National Forest enacted Stage 1 fire restrictions across the entire forest, while the Arizona Department of Forestry and Fire Management announced similar restrictions for state trust lands in Gila, Maricopa, and Pinal counties.
The restrictions come as fire officials reported major progress on two wildfires in the region, potentially freeing up firefighting resources for future incidents. The Forestry Department announced that the Hazen Fire, which burned nearly 1,200 acres of dense tamarisk along the Gila River near Buckeye, had reached 100% containment. Meanwhile, the Jones Fire near Wickenburg, which prompted evacuations and was also fueled by tamarisk vegetation, was reported at 90% containment.
Tonto National Forest prohibited campfires and the use of wood-, charcoal-, or coal-burning stoves outside Forest Service-provided fire structures. Liquid petroleum or LPG stoves are still allowed if they can be switched off and are kept at least three feet away from overhead or surrounding flammable materials. Similar restrictions apply on state lands, except fires are permitted in developed campsites or picnic areas. The ban also extends to wildlife areas managed by the Arizona Game and Fish Department, state parks, and highway rights-of-way.
The National Weather Service forecasted high temperatures in the upper 90s across metro Phoenix through Saturday, cooling slightly into the upper 80s and low 90s by Sunday. In Arizona’s high country, forecasters warned of elevated fire danger due to low humidity and strong southwest winds, with gusts expected between 20 and 30 mph on Saturday and 25 to 40 mph on Sunday.
“Gusty winds, dry fuels, and low humidity will lead to critical fire weather danger with easier fire starts and uncontrollable spread of new or existing fires,” the agency said in its Friday afternoon briefing.
The weather service declared a red flag warning for the Tonto National Forest and for southern Gila County, effective Sunday. The agency’s Tucson office also put out a Sunday, May 17, red flag warning covering Santa Cruz, Cochise, Graham and Greenlee counties, and the far eastern parts of Pinal and Pima counties.
Beyond the fire prohibition, the Tonto’s restrictions ban recreational shooting except for legal hunting activity.
The Tonto fire restrictions are in place through Sept. 30 unless rescinded. The state order is in effect until further notice.
Brandon Loomis covers environmental and climate issues for The Arizona Republic and azcentral.com. Reach him at brandon.loomis@arizonarepublic.com.
Environmental coverage on azcentral.com and in The Arizona Republic is supported by a grant from the Nina Mason Pulliam Charitable Trust.
Follow The Republic environmental reporting team at environment.azcentral.com and @azcenvironment on Facebook and Instagram.
Two men were arrested and two other suspects remain at large after a train burglary in northern Arizona last week, authorities said. On Monday, May 29, local and federal detectives investigating ongoing cargo thefts received a report of a train burglary in progress near Interstate 40 and Meteor Crater, west of Winslow, the Coconino County Sheriff’s Office said.
TUCSON, Ariz. (13 News) – The University of Arizona’s Biosphere 2 facility is now home to Biosphere 3, a collection of artificial intelligence agents connected directly to the lab’s sensors.
The AI system analyzes data from more than 1,800 sensors at one-minute resolution across the facility’s recreated habitats, which include a rainforest, ocean and savannah grasslands.
“The system runs real research at Biosphere 2 — LEO hillslope sensor analysis, climate control optimization, cross-biome environmental monitoring,” said Ornette, the system’s AI spokesperson. “This isn’t a simulation. It’s deployed at a major university research facility.”
How the system works
Jeff Larsen, who helps run Biosphere 3, said the system uses multiple AI agents, each with different jobs and personalities. The agents include Socrates, Marcus, Ornette, Darwin, Dewey and Edison.
“Edison is actually the one who goes through and monitors for original intellectual property being developed autonomously,” Larsen said.
The AI agents work together to analyze large amounts of data. Questions that could take researchers days or weeks to answer can be completed in about two minutes.
Larsen demonstrated with a question about average temperature in LEO during summer months compared to winter months. The system completed the analysis in approximately two minutes, including trend analysis of daily cycles.
The technology does not replace researchers, Larsen said. It allows them to spend less time processing data and more time on scientific questions.
Real-world applications
The team recently used the technology in Yuma to study water usage.
“We proposed to Google a water offset program that would include automation of gates and precision water delivery that would save, on just a 500-acre plot of land, a billion gallons of water over ten years,” Larsen said.
The system includes checks to prevent AI hallucinations. The AI agents verify each other’s work to ensure final output is based on real sensor data and science.
Researchers believe the system could eventually help other facilities address environmental and agricultural challenges.
More information about Biosphere 3 is available at https://uavip.arizona.edu/ai-and-world-models-biosphere-3.
====================================================
Are you streaming 13 News?
Watch a free live stream of Tucson Now and 13 News at TucsonNow.Live.
Be sure to download the free Tucson Now app which you can find on Apple and Google.
If you are using a desktop computer, you can use your mobile device to scan the QR code below.
You can submit your breaking news or weather images here.
Copyright 2026 13 News. All rights reserved.
-
World7 minutes ago
Europe Today: Costa speaks exclusively to Euronews as EU-Western Balkans summit underway
-
News32 minutes agoTrump, Netanyahu at odds / Elusive Iran deal : Sources & Methods
-
Los Angeles, Ca2 hours ago'Top Gun: Maverick' actor identified as victim stabbed to death in Tarzana
-
Detroit, MI2 hours agoStorm chances return, which could impact Motor City Pride, graduations this weekend across Metro Detroit
-
San Francisco, CA2 hours agoHilton campaigns in San Francisco as California primary votes still being counted
-
Dallas, TX2 hours agoCrews cover up AT&T branding as stadium becomes
-
Miami, FL3 hours agoMiami leaders gather for FIFA World Cup Host Committee Gala
-
Boston, MA3 hours agoPackage fire outside Boston’s Museum of African American History under investigation
