The Science Behind the ‘Horizontal Rainbow’ Phenomenon
Known in scientific terms as circumhorizontal arcs, these optical wonders occur when the sun sits at an elevation of more than 58 degrees above the horizon. The second crucial element for their formation is the presence of cirrus clouds—wispy, delicate formations that drift high in the atmosphere.
These clouds are composed of tiny hexagonal ice crystals, which, when positioned at just the right angle, act like miniature prisms. They refract sunlight into a stunning band of vibrant colors, stretching across the sky in a display reminiscent of a rainbow but perfectly horizontal.How Location Influences Sightings
Although many people assume these arcs are exceptionally rare, their frequency depends heavily on where you live. In the United States, especially in southern regions, circumhorizontal arcs can be seen multiple times each summer. However, in mid-latitude and northern European regions, sightings are far less common.
For instance, the probability of witnessing a “fire rainbow” in Los Angeles is estimated to be five to ten times higher than in London, simply due to geographic positioning and the angle of the sun.A Magical Moment Over Lake Sammamish
On a bright day over Washington’s Lake Sammamish, photographer Cessna Kutz spotted the rare spectacle stretching across the horizon. She wasted no time capturing the magnificent sight.
“Witnessed a pretty cool phenomenon out on Lake Sammamish today,” she wrote on Instagram. “A horizontal rainbow! To me, it was a reminder to hold onto hope and love instead of fear and panic in these unknown times. Stay safe out there, friends.”The Viral Impact of a Once-in-a-Lifetime Shot
After Kutz posted the photos online, they rapidly spread across social media and news outlets. “I honestly had no idea these photos would make the news,” she told reporters. “I was just sharing a beautiful moment I got to witness. Photography is my passion, and I’m grateful that my work has touched people not only in the U.S. but around the world. It has boosted my business and made a personal impact on so many.”Inspiring Reactions From Around the World
The images drew thousands of comments from people expressing awe, gratitude, and joy. Many remarked on the phenomenon’s beauty, while others felt it served as a timely reminder of hope during challenging times.
Kutz’s unexpected viral moment became more than just a striking nature photograph—it became a shared experience of wonder.
Known in scientific terms as circumhorizontal arcs, these optical wonders occur when the sun sits at an elevation of more than 58 degrees above the horizon. The second crucial element for their formation is the presence of cirrus clouds—wispy, delicate formations that drift high in the atmosphere.
These clouds are composed of tiny hexagonal ice crystals, which, when positioned at just the right angle, act like miniature prisms. They refract sunlight into a stunning band of vibrant colors, stretching across the sky in a display reminiscent of a rainbow but perfectly horizontal.How Location Influences Sightings
Although many people assume these arcs are exceptionally rare, their frequency depends heavily on where you live. In the United States, especially in southern regions, circumhorizontal arcs can be seen multiple times each summer. However, in mid-latitude and northern European regions, sightings are far less common.
For instance, the probability of witnessing a “fire rainbow” in Los Angeles is estimated to be five to ten times higher than in London, simply due to geographic positioning and the angle of the sun.A Magical Moment Over Lake Sammamish
On a bright day over Washington’s Lake Sammamish, photographer Cessna Kutz spotted the rare spectacle stretching across the horizon. She wasted no time capturing the magnificent sight.
“Witnessed a pretty cool phenomenon out on Lake Sammamish today,” she wrote on Instagram. “A horizontal rainbow! To me, it was a reminder to hold onto hope and love instead of fear and panic in these unknown times. Stay safe out there, friends.”The Viral Impact of a Once-in-a-Lifetime Shot
After Kutz posted the photos online, they rapidly spread across social media and news outlets. “I honestly had no idea these photos would make the news,” she told reporters. “I was just sharing a beautiful moment I got to witness. Photography is my passion, and I’m grateful that my work has touched people not only in the U.S. but around the world. It has boosted my business and made a personal impact on so many.”Inspiring Reactions From Around the World
The images drew thousands of comments from people expressing awe, gratitude, and joy. Many remarked on the phenomenon’s beauty, while others felt it served as a timely reminder of hope during challenging times.
Kutz’s unexpected viral moment became more than just a striking nature photograph—it became a shared experience of wonder.
