Weather Alert in Minnesota
Winter Storm Watch issued February 15 at 2:32PM CST until February 19 at 12:00PM CST by NWS Duluth MN
AREAS AFFECTED: Koochiching; North St. Louis; Northern Cook/Northern Lake; North Itasca; Central St. Louis; North Cass; South Itasca; Northern Aitkin; Carlton/South St. Louis
DESCRIPTION: * WHAT...Heavy snow, patchy blowing snow, and mixed precipitation possible. There is a 50 to 90 percent chance for total snow accumulations in excess of 6 inches, highest for the higher terrain of the North Shore. There is also a 20 to 70 percent chance for at least a glaze of ice accumulations. Winds could gust as high as 35 mph. * WHERE...Northern Aitkin, Koochiching, North Cass, Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake area and the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening, Wednesday, and Thursday morning commutes. * ADDITIONAL DETAILS...Periods of gusty winds and visibility of less than one quarter mile are possible in the Winter Storm Watch area. The best potential for a wintry mix will be along and south of the Iron Range Tuesday evening into Wednesday morning.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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