SUBSCRIBE NOW AND SAVE 3 months just 99¢/month

ADVERTISEMENT

ADVERTISEMENT

WeatherTalk: Sun dogs are not always a sign of cold weather

The sun dogs Monday morning were caused by snowflakes suspended in the air following the Sunday night blizzard.

Weather Talk.jpg

Sun dogs are often seen in our region in cold morning air following a snowstorm. Many people, therefore, associate sun dogs with cold air, even thinking that one causes the other. However, this is not quite right. Sun dogs are a refraction of sunlight caused by ice crystals in the air. The crystals work sort of like raindrops, but with different mechanics, to bend and separate the light into colors.

The ice crystals that caused the sun dogs Monday morning were actually windblown snowflakes suspended in the air following the Sunday night blizzard. Thin clouds can also cause sun dogs if the clouds are made of ice. This method can produce sun dogs in hot summer weather but summer sun dogs are not as bright because clouds made of ice are much higher up and so farther away. In extremely cold weather, water vapor will spontaneously freeze and so very cold weather is one cause of sun dogs, but not the only one.

Related Topics: WEATHERWEATHERTALK
What to read next
The blizzard warning is in effect for areas of the Red River Valley that encompass numerous cities, including Fargo, Moorhead, Grand Forks, Valley City and Wahpeton, until 9 p.m. on Tuesday.
In February of 1895, one to two feet fell from Galveston to New Orleans along with blowing snow and temperatures in the teens.
The neighborhood, near Osgood Park, has some drifts nearly six feet high out their doorstep.
Scientific studies are inconclusive as to whether or not this actually works as intended.