Weather Alert in Colorado
Winter Weather Advisory issued February 16 at 11:18PM 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. Total snow accumulations between 4 and 9 inches, with localized higher amounts up to 12 inches in the valleys. For the mountains, 6 to 12 inches with localized higher amounts up 18 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. * ADDITIONAL DETAILS...Between 5AM and 8AM this morning, a burst of heavy snow and strong winds are expected to drop visibility to less than a quarter and cause roads to become snow covered. Travel is expected to be very difficult during the time frame.
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 Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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