Weather Alert in Colorado
Flash Flood Warning issued August 27 at 7:28PM MDT until August 27 at 8:30PM MDT by NWS Grand Junction CO
AREAS AFFECTED: Rio Blanco, CO
DESCRIPTION: FFWGJT The National Weather Service in Grand Junction has extended the * Flash Flood Warning for... The Lee Fire burn scar in... South Central Rio Blanco County in northwestern Colorado... * Until 830 PM MDT. * At 728 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Lee Fire Burn Scar. Between 0.5 and 0.8 inches of rain have fallen. Flash flooding is already occurring. Debris flows have made portions of County Road 5 impassable with water and debris still moving through. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Lee Fire Burn Scar. SOURCE...Radar. IMPACT...Life threatening flash flooding of areas in and around the Lee Fire Burn Scar. * Some locations that will experience flash flooding include... Rio Blanco. This includes the following streams and drainages... Stewart Gulch, Twelvemile Creek, Bitter Creek, Sheep Creek, Story Gulch, Piceance Creek, Thirteenmile Creek, Bear Creek and Fourteenmile Creek.
INSTRUCTION: This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Lee Fire Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas.
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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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