Weather Alert in Montana
Special Weather Statement issued February 20 at 8:02PM MST by NWS Billings MT
AREAS AFFECTED: Northern Big Horn; Southern Big Horn; Bighorn Canyon; Pryor/Northern Bighorn Mountains; Northeastern Yellowstone; Southwestern Yellowstone
DESCRIPTION: At 802 PM MST, Doppler radar was tracking an area of heavy snow along a line from near Worden to 7 miles south of Pryor, moving east at 45 mph. Locations impacted include... Hardin, Lodge Grass, Crow Agency, Fort Smith, Ballantine, Worden, Busby, Huntley, Shepherd, Lockwood, Pryor, St. Xavier, Wyola, Pompeys Pillar, Rosebud Battlefield Park, and Tongue River Reservoir. Visibility under 1 mile and a quick 0.5" of snow should be expected.
INSTRUCTION: Use extra caution if you must travel into or through this area of snow. Rapid changes in visibility and potentially slick roads may lead to accidents. Consider delaying travel until the snow passes your location. Conditions can deteriorate rapidly in winter weather situations. Be prepared for snow or ice covered roads. Slow down and allow extra time when traveling.
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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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