Weather Alert in Idaho
Winter Weather Advisory issued February 16 at 2:01AM MST until February 17 at 5:00PM MST by NWS Pocatello ID
AREAS AFFECTED: Frank Church Wilderness; Sawtooth/Stanley Basin; Sun Valley Region; Big Lost Highlands/Copper Basin
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 4 and 8 inches below 7500 feet with total snow accumulations between 8 and 12 inches above 7500 feet. Blowing and drifting snow with winds gusting as high as 40 mph. * WHERE...Big Lost Highlands/Copper Basin, Frank Church Wilderness, Sawtooth/Stanley Basin, and Sun Valley Region. * WHEN...From 8 PM this evening to 5 PM MST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes.
INSTRUCTION: Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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