Weather Alert in Montana
Cold Weather Advisory issued February 18 at 11:26PM MST until February 19 at 12:00PM MST by NWS Great Falls MT
AREAS AFFECTED: Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains
DESCRIPTION: * WHAT...Very cold wind chills as low as 35 below. * WHERE...Snowy and Judith Mountains, Fergus County below 4500ft, and Judith Basin County and Judith Gap. * WHEN...Until noon MST Thursday. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes.
INSTRUCTION: Dress in layers including a hat, face mask, and gloves if you must go outside.
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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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