Weather Alert in Nebraska
Flood Watch issued February 5 at 3:23AM CST until February 9 at 10:00PM CST by NWS Omaha/Valley NE
AREAS AFFECTED: Antelope; Pierce; Madison; Stanton; Cuming; Platte; Colfax; Dodge; Washington; Butler; Saunders; Douglas; Sarpy; Cass
DESCRIPTION: A watch has been issued for the Platte, Elkhorn, and Loup rivers due to potential ice jam development. This heightened threat is due to persistent warm weather. Those with interests along area rivers, especially in low-lying areas, should remain vigilant to the potential for rapidly rising water. * WHAT...Flooding caused by an ice jam is possible. * WHERE...Portions of east central, northeast, and southeast Nebraska, including the following counties, in east central Nebraska, Butler, Dodge, Douglas, Sarpy, Saunders and Washington. In northeast Nebraska, Antelope, Colfax, Cuming, Madison, Pierce, Platte and Stanton. In southeast Nebraska, Cass. * WHEN...Through Monday evening. * IMPACTS...The formation of an ice jam could result in sudden rises of water, leading to a rapid flooding situation. Ice jams can cause water level fluctuations of 1 to 3 feet over a very short time period and without much notice. * ADDITIONAL DETAILS... - While no ice movement has been observed or reported, several consecutive days of highs ranging from the upper 40s to mid 60s suggest breakup and movement is imminent.
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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
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