Weather Alert in Colorado
Avalanche Advisory issued February 19 at 5:31PM MST by NWS Denver CO
AREAS AFFECTED: Elkhead and Park Mountains; Grand and Battlement Mesas; Gore and Elk Mountains/Central Mountain Valleys; West Elk and Sawatch Mountains; Northwestern San Juan Mountains; Southwest San Juan Mountains; West Jackson and West Grand Counties Above 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; Western Mosquito Range/East Lake County Above 11000 Ft; Eastern Sawatch Mountains above 11000 Ft; Western Chaffee County Between 9000 and 11000 Ft; Eastern San Juan Mountains Above 10000 Ft
DESCRIPTION: SABCO THE FOLLOWING MESSAGE IS TRANSMITTED AT THE REQUEST OF THE COLORADO AVALANCHE INFORMATION CENTER. A SPECIAL AVALANCHE ADVISORY IN EFFECT FROM THURSDAY EVENING THROUGH SUNDAY *WHATit is very easy for people to trigger large and deadly avalanches through the weekend. *WHEREthe Elkheads, Park Range, Flat Tops, Front Range, Gore Range, 10-Mile Range, Grand Mesa, Sawatch, West Elk, Elk Mountains, San Juan Mountains. *WHENDangerous avalanche conditions exist through Sunday. *IMPACTSLarge and dangerous avalanches will be easy to trigger. *PRECAUTION/PREPAREDNESS ACTIONS Travel in backcountry avalanche terrain requires careful planning and cautious route-finding to stay safe. Many slopes that were safe earlier this winter are now dangerous. Avoid travel on and under slopes with a slope angle steeper than about 30 degrees. You can find more detailed information at colorado.gov/avalanche Pritchett
INSTRUCTION: N/A
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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
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