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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Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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