Weather Alert in Iowa
Winter Storm Watch issued March 13 at 9:31PM CDT until March 16 at 1:00PM CDT by NWS La Crosse WI
AREAS AFFECTED: Floyd; Chickasaw; Fayette; Clayton; Grant
DESCRIPTION: ...MAJOR WINTER STORM SATURDAY NIGHT INTO MONDAY MORNING... .A prolonged, high-impact winter storm will impact the region from Saturday night through Monday morning. Highest snow totals in excess of 12 to 18 inches are favored north of Interstate 90 with some locales north of Highway 10 approaching 24 inches. Along Interstate 90, a wintry mix of snow, freezing rain, and sleet makes it difficult to pin down exact snow and ice amounts, but impacts are warranting of a winter storm warning. Across northeast Iowa and southwest Wisconsin, snow does not look to arrive until Sunday afternoon, so the winter storm watch is maintained until further details can be ascertained. Increasing winds Sunday afternoon and night should result in whiteout conditions for exposed locales and an upgrade to a blizzard warning is likely once the exact threat area is determined. Regardless of exact snow amounts, expect major travel impacts regionwide with some roads possibly impassable, especially in wind-prone areas. * WHAT...Heavy snow possible. Total snow accumulations between 3 and 6 inches possible. Winds could gust as high as 55 mph and may result in blizzard conditions later Sunday into Monday morning. * WHERE...In Iowa, Floyd, Chickasaw, Clayton, and Fayette Counties. In Wisconsin, Grant County. * WHEN...From Sunday afternoon through Monday afternoon. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning commute. Gusty winds could bring down tree branches, especially those coated in ice.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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