Weather Alert in Colorado
Winter Weather Advisory issued February 17 at 8:57AM MST until February 18 at 11:00PM MST by NWS Denver CO
AREAS AFFECTED: Jackson County Below 9000 Feet; Grand and Summit Counties Below 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet; South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet
DESCRIPTION: * WHAT...Snow expected. Additional snow accumulations between 2 and 5 inches in the valleys. For the mountains, 4 to 8 inches of additional snowfall with localized higher amounts up 12 inches. Winds gusting as high as 60 mph over the mountain passes. * WHERE...North Park, Grand and Summit Counties Below 9000 Feet, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 11 PM MST Wednesday. * IMPACTS...Snow and blowing snow will reduce visibility to a quarter mile or less, with potential for sudden snow squalls to bring quick intense bursts of snow, rapidly reduced visibility, and treacherous travel conditions. Travel could be very difficult to impossible. The hazardous conditions will impact the Tuesday morning and evening commutes.
INSTRUCTION: Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. If traveling to the mountains, be prepared for winter driving conditions. Check cotrip.org for road closures and traction laws.
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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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