Weather Alert in Iowa
Winter Storm Warning issued February 19 at 10:58PM 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 TONIGHT INTO FRIDAY MORNING... .A winter storm lifts through the region tonight and exits Friday morning. The band of heaviest snow amounts is expected to be 30 to 40 miles at most and has shifted northwestward slightly over the last few hours. The winter storm warnings and advisories have been adjusted accordingly. 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 Friday. * IMPACTS...Travel could be very difficult. 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 is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
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
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