Weather Alert in Wyoming
Winter Storm Warning issued February 23 at 11:49AM MST until February 25 at 5:00PM MST by NWS Riverton WY
AREAS AFFECTED: Yellowstone National Park
DESCRIPTION: * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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