Weather Alert in Montana
Winter Weather Advisory issued February 15 at 12:17PM MST until February 17 at 5:00PM MST by NWS Missoula MT
AREAS AFFECTED: Lower Clark Fork Region
DESCRIPTION: * WHAT...Snow expected. There is a likelihood moderate winter weather impacts. Total snow accumulations 3 to 6 inches from Haugan to Lookout Pass, with 1 to 3 inches in lower elevation valley areas. * WHERE...Highway 200 Thompson Falls to Plains, I-90 Lookout Pass to Haugan, Evaro Hill, and Highway 200 Trout Creek to Heron. * WHEN...From 8 PM Monday to 5 PM MST Tuesday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Tuesday morning and evening commutes, especially over higher passes. * ADDITIONAL DETAILS...Falling temperatures and snow levels will bring snow to valley areas by Tuesday morning.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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