Earth Changes
"I have never seen such a rainbow before," says Koeman. "It appeared just a few minutes after a red sunrise."
What made the rainbow red? It was only color available. All of the other colors of the rainbow had been scattered away by air molecules and dust particles in front of the low-hanging sun.
Koeman notes another puzzle: Rainbows require raindrops, "but it was not raining at all!" he says. Atmospheric optics expert Les Cowley thinks the raindrops were there, in the distance. "There could be rain on the horizon or virga. Virga is cloud precipitation that does not reach the ground," says Cowley.
Red rainbows are more common than you might think. They appear with frequency at sunrise or sunset, all around the world. More examples may be found in the realtime photo gallery.

A pygmy sperm whale that beached in San Narciso, Zambales, on Sunday died on Monday.
Residents of Barangay (village) Dampay discovered the carcass of the whale floating some 100 kilometers from the coastline at 9 a.m., said SPO4 Tomas Mejos, team leader of a unit deployed by the Candelaria Police Station.
"The whale was about the size of a minibus," Mejos said in a telephone interview.
The species of the whale has yet to be identified, Mejos added.
The Bureau of Fisheries and Aquatic Resources in Central Luzon has sent a team to determine the cause of the whale's death, said Nelson Bien, chief of the agency's fisheries resources and management division.
As of 1 p.m., residents were still towing the animal to the shore, Mejos added.
Paula Lynch told KATU News she first heard the noise several weeks ago. She's heard the noise about five times, and at all hours of the day.
On Friday, she recorded a 30-second video and posted it to social media, hoping someone had an answer.

With a temperature of -2C there was a fair dusting of snow on Mount Wellington and its lookout.
After weeks of warm and dry weather, there has been a sprinkling of snow in Tasmania's Great Lakes district and on Hobart's Mount Wellington.
The temperature dipped to zero at Liawenee in the Central Highlands overnight, with light rain turning to snow early this morning.
Kaylee Hattinger at the Great Lakes Hotel said it started snowing there about 6:00am, but it quickly melted away.
"It covered the cars, it was enough to go 'oh, snow!'," she said.
"But it's very fine, but more than hail, and fluttering down.
"I get really excited with snow, even in winter. But in summer it's even more special, I think."
Prelim M5.5 earthquake Hindu Kush region, Afghanistan Feb-21 09:12 UTC, updates https://t.co/Ya13tRvkNr— USGS Big Quakes (@USGSBigQuakes) February 21, 2016
The quake happened 43km south of the village of Jarm, 64km and 75km from the city of Fayzabad, the provincial capital and largest city in Badakhshan Province in northern Afghanistan. The city has a population of about 50,000.
The quake was at a depth of 176.7km, USGS added.
The baby snake is only a week old, born last Saturday.
Owner John McNamara, who is an Australian snake breeder, thought he just had twins, but it was more.
From the tail to the neck, the little coastal carpet python looks like any other snake, but from the neck up, that's when you see four eyes, two mouths and two heads.
As The Border Mail described it, the snake looks like the mythological hydra.
Cyclone Winston brought winds of over 320km/h (200mph), torrential rain and waves of up to 12m (40ft).
It destroyed hundreds of homes and cut electricity lines. There are reports of entire villages flattened.
The government has imposed a nationwide curfew and 30-day state of national disaster giving extra powers to police to arrest people without a warrant.
The Category-five storm - the highest level - moved westward since making landfall at 18:30 local time (06:30 GMT) on Saturday in the north of Fiji's main island, Viti Levu.
It changed direction at the last minute, sparing the capital Suva the full force of its winds.
The government had opened about 750 evacuation centres.
More than 1,000 people were sheltering in one on the second largest island of Vanua Levu, north-east of Viti Levu, the Fiji Broadcasting Company said.
Among the victims was an elderly man who died on the smaller Koro Island when a roof fell on him.
Normal rainfall for the airport during the same period is 14.14 inches. Records have been kept at the airport since 1940.
That's a lot of rain. And February's not over yet, so the number will climb.
Other near-record-setting areas (where records have been kept since the 1890s) include:
Vancouver with its second wettest winter (25.77 inches)
Downtown Portland's third wettest winter (31.06 inches)
and Hillsboro with its fourth wettest winter (24.74 inches).
The ranking is for the period of Dec. 1 1 through Feb. 28-29.
And the Portland area's rainy season is far from over. Keep those rain boots and umbrellas handy.

U.S. Geological Survey reported a 1.6-magnitude earthquake one mile northwest from Bloomingdale.
"I heard a loud boom and I'm on the other side of the highway," Lori Milone wrote on Facebook.
"Shook our house and then we detected a burning smell for a little while," wrote Mark Selz.
"Double shakes here off Cascade Way, sounded like someone was in my house," wrote Carrie Shaver. "What happened?"
"Me and my husband were watching TV and he said, "What was that?" It sounded like an explosion," one Butler woman told WCBS 880's Sean Adams. "We just went about our business. We didn't hear anything else. He said to me, "You know, that almost made the house shake."
CBS2's Lonnie Quinn explained that low-magnitude earthquakes happen often in the Morris County area, as it - and Butler specifically - sit on the Ramapo Fault Line - one of the major fault lines in the U.S.
Quinn reported the reason the earthquake was felt by so many people in the area was that it was very shallow - occurring only about a mile to a mile and a half underground.
By contrast, the 1994 Northridge earthquake in Los Angeles was 11 miles deep.
The giant 40 to 50 meters deep, 30 meters wide crater is filled with water and still growing. It has already swallowed parts of an office building. Another house is on the verge of collapsing.
A first sinkhole opened up between two farm buildings in Nordhausen at around 7pm on Friday evening.
Then the ground collapsed another time. The two holes than merged into a giant cavity measuring 30 meters in diameter and 40 to 50 meters deep. That is gigantic
As the ground collapsed, witnesses reported a strong rumbling noise like that we hear during an earthquake.
The two buildings were empty as they collapsed into the ground.
In this video, you see one of the house collapse @ 3:33:.












Comment: Heavy rains saturate Portland, northwest Oregon, causing flooding, landslides, sewer overflow