On the evening of March 13, 1997, something unusual appeared in the skies above Arizona.
People across the state looked up and reported formations of bright lights moving silently through the night. Some witnesses described separate lights traveling together. Others were convinced they were looking at a single enormous V-shaped or boomerang-shaped object passing overhead.
The sightings would become known as the Phoenix Lights.
Nearly three decades later, the Phoenix Lights of 1997 remain one of the most famous UFO events in American history. The incident involved reports from numerous locations, conflicting eyewitness descriptions, military activity, video footage, a future admission from Arizona's governor and a debate that has never completely disappeared.
What makes the story particularly interesting is that the Phoenix Lights were not necessarily one event.
There appear to have been at least two major groups of sightings on the night of March 13: an earlier formation moving south across Arizona and a later group of bright lights seen near Phoenix.
Understanding that distinction is essential to understanding what really happened.
What Were the Phoenix Lights?
The Phoenix Lights were a series of unusual aerial sightings reported over Arizona on March 13, 1997.
The best-known reports described bright lights arranged in a V, triangle or boomerang formation moving south across the state. Witnesses reported seeing them from northern Arizona through the Phoenix metropolitan area and farther south toward Tucson.
Later that night, another formation of bright lights appeared southwest of Phoenix near the Sierra Estrella mountains.
Although the two events are often combined under the same name, they were different in appearance and occurred at different times.
That distinction would eventually become central to the debate over the Arizona Phoenix Lights.
The Night of March 13, 1997
The story did not actually begin over downtown Phoenix.
One of the earliest reported sightings occurred near Henderson, Nevada, shortly before 8 p.m. The unusual formation appeared to be moving southeast toward Arizona.
Not long afterward, reports began arriving from northern Arizona.
The National UFO Reporting Center recorded an early call from a former police officer near Paulden, north of Prescott, at approximately 8:16 p.m. He described several reddish-orange lights that appeared to form a V or boomerang-like pattern.
More calls followed.
People around Prescott and Prescott Valley reported four or five bright lights moving through the sky. Some observers described only the lights themselves. Others believed they could see a dark triangular structure connecting them.
Several witnesses also emphasized something that would become one of the most repeated details in the entire Phoenix Lights story:
The object appeared to make little or no sound.
As the formation continued south, reports spread through communities including Chino Valley, Dewey, Glendale, Tempe and Phoenix.
The Phoenix Lights in 1997 were becoming a statewide event before most people even knew there was a story.
The Lights Reach Phoenix
By roughly 8:30 p.m., people throughout the Phoenix metropolitan area were looking toward the sky.
Descriptions varied considerably.
Some witnesses reported a row or V-shaped formation of individual lights. Others claimed an enormous dark object passed slowly above them with lights positioned along its edges.
Size estimates also varied dramatically.
Some people believed the formation was simply a group of distant aircraft. Others described something so large that it appeared to cover a significant portion of the sky.
One witness interviewed by the National UFO Reporting Center described an object above Phoenix that appeared larger than a clenched fist held at arm's length. Other reports similarly portrayed an unusually large triangular or arrowhead-shaped formation.
The lack of agreement is important.
Eyewitnesses were observing the phenomenon from different locations, distances and angles. Some used binoculars or telescopes. Most did not. That makes reconstructing exactly what everyone saw extremely difficult.
But there is little doubt that a large number of people saw unusual lights moving across Arizona that evening.
A Single Light Over Phoenix Wasn't the Whole Story
The phrase light over Phoenix makes the incident sound like a single glowing object hovering above the city.
The actual reports were much more complicated.
Witnesses described multiple lights, changing formations, different colors and apparently different distances from the ground.
Some accounts described five lights.
Others reported six, seven or more.
Some people believed the lights were physically connected to a massive object. Others saw no visible structure between them.
That variation has fueled arguments on both sides of the Phoenix Lights mystery.
Believers argue that the enormous apparent size, silence and reports of a visible structure cannot easily be explained by ordinary aircraft.
Skeptics point out that judging the distance and size of lights against a dark sky is extremely difficult. Without a reliable sense of distance, several individual aircraft flying in formation could potentially appear to be lights attached to one enormous object.
That debate becomes even more important when one particular eyewitness is considered.
The Telescope Witness Who Said He Saw Aircraft
Not everyone who watched the first formation believed it was mysterious.
One of the most frequently cited skeptical accounts came from amateur astronomer Mitch Stanley.
Stanley reportedly observed the moving formation through a 10-inch Dobsonian telescope from the Scottsdale area. Unlike witnesses looking at the lights with the naked eye, the telescope allowed him to see significantly more detail.
He said he saw airplanes.
According to later reporting, Stanley believed each apparent light resolved into lights on individual aircraft and was confident that he was looking at a formation of planes rather than a single enormous craft.
This became one of the strongest arguments for a conventional explanation of the earlier Phoenix Lights formation.
It does not prove that every witness across Arizona was observing the same aircraft, and it does not perfectly resolve every eyewitness description. But any serious examination of the Phoenix Lights has to include Stanley's account.
Ignoring evidence simply because it supports one side or the other makes the story less interesting, not more.
Then Came a Second Set of Lights
This is where the story gets confusing.
Later in the evening, another set of lights appeared near Phoenix.
Around 10 p.m., residents saw a row of bright orange or yellowish lights southwest of the city. Unlike the earlier formation that traveled across Arizona, these lights appeared relatively stationary or slowly descending.
They were also widely photographed and videotaped.
These are the images most people recognize when they search for the Phoenix Lights 1997 incident today: several bright glowing objects seemingly suspended above the dark Arizona horizon.
Reports of lights in Phoenix Arizona that night therefore included at least two substantially different phenomena.
The earlier event moved across the state.
The later lights appeared in roughly the same area southwest of Phoenix and gradually disappeared.
And unlike many aspects of the earlier sightings, there is substantial evidence supporting a conventional explanation for the later event.
Were the Phoenix Lights Military Flares?
The most famous explanation for the Phoenix Lights is military flares.
But saying simply that "the Phoenix Lights were flares" leaves out an important part of the story.
The flare explanation primarily concerns the later lights.
Aircraft associated with the Maryland Air National Guard were training in Arizona that night. A-10 aircraft dropped illumination flares over the military training range southwest of Phoenix.
These were parachute-supported illumination flares designed to remain visible while slowly descending.
From the Phoenix area, lights above the distant training range could appear suspended in the sky. As they descended behind the Sierra Estrella mountains, they would disappear from view.
Investigators have also compared footage of military flares with videos of the later Phoenix lights and argued that their appearance and disappearance are consistent with this explanation.
That provides a persuasive explanation for at least part of what people saw that night.
There is one major problem with using it to explain the entire incident:
The earlier V-shaped formation had already traveled across much of Arizona before the later flare event occurred.
So even if the later lights were military flares, that alone does not answer what witnesses were seeing earlier in the evening.
Could the Earlier V-Shaped Lights Have Been Aircraft?
A conventional explanation has also been proposed for the earlier formation.
Military aircraft were operating in Arizona as part of training activities, and skeptics have argued that a group of aircraft flying in formation could account for the V-shaped pattern.
The telescope observation by Mitch Stanley provides significant support for that possibility.
At night, several aircraft separated by considerable distances can create an unusual illusion. If only their lights are visible, the human eye may interpret the empty darkness between those lights as the body of a single object.
This could potentially explain why one person saw individual lights while another believed a gigantic solid craft filled the space between them.
However, many witnesses remain unconvinced.
They reported an object moving slowly, silently and sometimes appearing close enough to reveal a definite shape.
For those witnesses, a formation of conventional aircraft does not match what they remember seeing.
Arizona Governor Fife Symington Saw Something Too
One of the strangest chapters in the Phoenix Lights story involves Arizona Governor Fife Symington.
In the months after the sightings, public pressure for answers increased.
During a June 1997 news conference, Symington famously brought out an aide dressed as an alien, turning the growing UFO controversy into a joke for the cameras.
At the time, the stunt made it appear that Arizona's governor did not take the incident particularly seriously.
Years later, that perception changed dramatically.
In 2007, Symington publicly revealed that he had personally witnessed something unusual on the night of the Phoenix Lights.
He described seeing an enormous object in the Arizona sky and said the experience had amazed him. Symington, who had aviation experience, maintained that what he witnessed did not resemble anything familiar to him.
His admission did not prove an extraterrestrial explanation.
But it added another remarkable eyewitness to an already extraordinary list.
Why Did the Phoenix Lights Become So Famous?
UFO sightings happen constantly.
Very few become cultural landmarks.
The Phoenix Lights were different for several reasons.
First was the number of witnesses.
The phenomenon was reported across a huge stretch of Arizona rather than by one person standing alone on an isolated road.
Second was the location.
The formation eventually passed through one of the largest metropolitan areas in the United States. A strange object in a remote desert can disappear without documentation. Strange lights above Phoenix had an enormous potential audience.
Third was timing.
Comet Hale-Bopp was highly visible during this period, giving people an additional reason to be outside looking toward the sky.
And then there was the media.
For months, the story remained primarily local. That changed dramatically in June 1997 when USA Today featured the Phoenix Lights, helping transform an Arizona mystery into a nationally recognized UFO case.
Television networks picked up the story. Witness footage circulated. Investigators debated explanations.
The lights over Phoenix 1997 story had entered American UFO folklore.
Why the Phoenix Lights of 1997 Are Still Debated
The lasting mystery exists partly because different pieces of evidence appear to point toward different conclusions.
There is strong evidence that military illumination flares explain the later row of lights southwest of Phoenix.
There is also credible evidence that aircraft could have produced the earlier moving formation, particularly the telescope observation identifying individual planes.
But there are also numerous witnesses who insist those explanations do not describe what they saw.
They remember a huge silent object.
They remember a dark shape between the lights.
They remember something moving in ways they did not associate with normal aircraft.
The problem is that eyewitness testimony, even sincere eyewitness testimony, is difficult to verify decades later.
Human perception is especially unreliable when judging unidentified lights against a dark sky. Without known reference points, estimating distance, altitude, speed and physical size can become extremely difficult.
At the same time, dismissing every account simply because an explanation exists for some of the lights does not accurately represent the history of the case.
The most responsible conclusion is also the least dramatic:
Different people may have witnessed different things during the course of the evening.
Were the Phoenix Lights Aliens?
There is no verified evidence demonstrating that the Phoenix Lights were extraterrestrial spacecraft.
That is worth stating clearly.
There are eyewitness accounts, videos, photographs and decades of testimony surrounding the event. But none provides scientifically verified proof that an alien craft flew over Arizona.
That does not make the story meaningless.
The Phoenix Lights are fascinating precisely because they show how complicated a mass sighting can become.
Thousands of people can look toward the same sky and come away with very different interpretations.
Military activity can explain one portion of an event while questions remain about another.
Eyewitness accounts can be compelling without being scientifically conclusive.
And a single night can become part of a city's identity for decades.
The Phoenix Lights Become Part of Arizona History
Today, the Phoenix Lights are more than an old UFO report.
They have become part of Arizona folklore.
Documentaries, television programs, books, podcasts and films have revisited the case. New generations discover the story without having been alive when it happened.
The distinctive V-shaped row of lights has become instantly recognizable within UFO culture.
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Frequently Asked Questions About the Phoenix Lights
When did the Phoenix Lights happen?
The main Phoenix Lights sightings occurred on March 13, 1997. Reports began in the evening and continued for several hours as unusual lights were seen across Arizona.
Where were the Phoenix Lights seen?
Reports came from a broad area stretching from near Nevada through northern and central Arizona, the Phoenix metropolitan area and farther south toward Tucson.
What did the Phoenix Lights look like?
Descriptions varied. Many witnesses reported five or more lights arranged in a V, triangle or boomerang formation. Some believed the lights belonged to a single enormous dark object, while others saw only separate points of light.
Were the Phoenix Lights military flares?
Military illumination flares provide a strong explanation for the later group of bright lights seen southwest of Phoenix. Those lights appeared later than the earlier V-shaped formation, however, so the flare explanation does not by itself account for every sighting reported during the evening.
Were the earlier Phoenix Lights airplanes?
Some investigators believe so. Amateur astronomer Mitch Stanley reported observing the formation through a telescope and identifying individual aircraft. Other witnesses strongly disagreed and believed they saw a single large structured object.
How many people saw the Phoenix Lights?
There is no definitive verified count, but contemporary and later reports describe a very large number of witnesses across Arizona, commonly characterized as thousands of people.
Were the Phoenix Lights ever explained?
Parts of the event have plausible conventional explanations. The later lights are widely attributed to military illumination flares, while aircraft have been proposed as an explanation for the earlier moving formation. Some eyewitnesses continue to argue that neither explanation matches what they personally observed.
The Mystery That Refuses to Disappear
On March 13, 1997, people across Arizona looked into the night sky and saw something they did not expect.
Some almost certainly saw military activity.
Some may have watched aircraft moving together through the darkness.
Others remain convinced they witnessed something completely different.
That uncertainty is why the Phoenix Lights have survived.
Unlike a blurry photograph with no witnesses or a strange story told decades after the fact, the Phoenix Lights of 1997 unfolded above populated communities, generated numerous reports and became part of the public record almost immediately.
The mystery is not simply whether extraterrestrials visited Arizona.
It is the harder question of exactly what hundreds or thousands of people were looking at — and why so many came away believing they had witnessed something extraordinary.
Nearly thirty years later, the Arizona sky has never completely given up the answer.