Weather Alert in Minnesota
Frost Advisory issued September 7 at 9:59PM CDT until September 8 at 8:00AM CDT by NWS Duluth MN
AREAS AFFECTED: Koochiching; North St. Louis; Central St. Louis; Carlton/South St. Louis; Douglas; Bayfield; Ashland; Iron; Sawyer; Price
DESCRIPTION: * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Minnesota, Koochiching, Carlton, St. Louis Counties. In Wisconsin, Price, Ashland, Bayfield, Douglas, Iron, and Sawyer Counties. This includes the Tribal Lands of the Bad River Reservation, the northwestern area of the Lac du Flambeau Band, the Fond du Lac Band, the Red Cliff Band, the Lac Courte Oreilles Reservation and the Bois Forte Band, Lake Vermilion and, Nett Lake areas. Other locations including Madeline Island, the Apostle Islands National Lakeshore and Voyageurs National Park. This also includes the Boundary Waters western area. * WHEN...From 1 AM to 8 AM CDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Areas within 10 miles of Lake Superior will be warmer and frost is less likely there. Frost will be less widespread compared to last night.
INSTRUCTION: Take steps now to protect tender plants from the cold.
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Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
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Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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