Weather Alert in Montana
Winter Storm Warning issued March 11 at 5:53PM MDT until March 13 at 12:00PM MDT by NWS Great Falls MT
AREAS AFFECTED: Upper Blackfoot and MacDonald Pass; Northwest Beaverhead County
DESCRIPTION: * WHAT...Snow and blowing snow expected. Total snow accumulations between 3 and 7 inches in the Upper Blackfoot Valley, Lincoln area, and Big Hole Pass with 6 to 13 inches over Flesher pass, Macdonald Pass, and Chief Joseph Pass. Winds gusting as high as 65 mph may create significant visibility reductions in blowing snow Thursday. * WHERE...Upper Blackfoot and MacDonald Pass and Northwest Beaverhead County. * WHEN...Until noon MDT Friday. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. Strong winds could cause tree damage.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. Remember, a Winter Storm Warning means that there is at least an 80% chance of impactful winter weather conditions during the warning period.
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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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