Weather Alert in Iowa
Winter Weather Advisory issued February 27 at 2:25AM CST until February 28 at 6:00PM CST by NWS La Crosse WI
AREAS AFFECTED: Howard; Winneshiek; Allamakee; Dodge; Olmsted; Mower; Fillmore; Houston; Vernon; Crawford; Richland
DESCRIPTION: ...BAND OF HEAVY SNOW SATURDAY... .A narrow band of heavy snow with 1" to 2" per hour snowfall rates likely develops over the Upper Mississippi River Valley Saturday morning into the evening. Heaviest snowfall rates and subsequent amounts will sharply decrease on either side of the band. Therefore, any small change to storm track greatly affects impacts and amounts locally. Current confidence in accumulating snowfall is highest from the Minnesota and Iowa border into western Wisconsin at this time. Longer duration of heavier snowfall may also result in higher amounts. * WHAT...Snow expected. Heavier snowfall rates causing temporary visibility reductions. Total snow accumulations between 1 and 4 inches. * WHERE...Portions of northeast Iowa, southeast Minnesota, and southwest Wisconsin. * WHEN...From 6 AM to 6 PM CST Saturday. * IMPACTS...Plan on slippery road conditions.
INSTRUCTION: Slow down and use caution while traveling. In Iowa, visit 511ia.org for road conditions. In Minnesota, visit 511mn.org for road conditions. In Wisconsin, visit 511wi.gov for road conditions.
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North America Water Vapor (Moisture)
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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.
Next Topic: Cumulus Clouds
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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