Weather Alert in Iowa
Winter Storm Warning issued February 20 at 2:40AM CST until February 20 at 9:00AM CST by NWS La Crosse WI
AREAS AFFECTED: Howard; Winneshiek; Allamakee; Floyd; Chickasaw; Fayette; Clayton; Houston; La Crosse; Vernon; Crawford; Richland; Grant
DESCRIPTION: ...MODERATE TO HEAVY SNOW EARLY THIS MORNING... .A winter storm is impacting the region early this morning and gradually winds down later this morning. The band of heaviest snow amounts is expected to be 30 to 40 miles at most. There will be a very sharp cutoff in amounts on the northwest side of the snow band with impacts varying greatly in the span of just a few miles. Road conditions will deteriorate quickly in the band of heavy snow with slippery to hazardous travel conditions expected. * WHAT...Heavy snow with accumulations between 5 and 9 inches. Winds gusting as high as 40 mph. * WHERE...Portions of north central and northeast Iowa, southeast Minnesota, and southwest and west central Wisconsin. * WHEN...Until 9 AM CST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute. * ADDITIONAL DETAILS...There will be a sharp cutoff in snow amounts on the northwest side of this warning with impacts varying quickly in the span of a few miles. The city of La Crosse will straddle this line with impacts possibly varying substantially between the north and south sides of the city.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. 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 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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