Weather Alert in Minnesota
Flood Watch issued July 27 at 2:08PM CDT until July 28 at 4:00AM CDT by NWS Duluth MN
AREAS AFFECTED: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; South Itasca; Northern Aitkin; South Aitkin; Carlton/South St. Louis; Pine; Douglas; Bayfield; Burnett; Washburn
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...In Minnesota, Pine, South Itasca, Cook, Lake, Carlton, St. Louis and Aitkin Counties and Wisconsin, Bayfield, Burnett, Douglas and Washburn Counties. This includes the Tribal Lands of the Fond du Lac Band, the Red Cliff Band, the Grand Portage Reservation, the St. Croix Band in Burnett County, the Mille Lacs Band, Big Sandy Lake, Hinckley, Lena Lake and, East Lake areas and the Bois Forte Band, Nett Lake and, Lake Vermilion areas. Other locations including the Apostle Islands National Lakeshore and Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 7 PM CDT this evening through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Thunderstorms are expected to develop later this afternoon through this evening. While the storms should be progressive, they should produce torrential rainfall rates. Soils are fairly saturated from recent rainfall which gives less space for water to soak in leading to rapid runoff. - Flood safety information can be found at www.weather.gov/safety/flood.
INSTRUCTION: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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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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