Weather Alert in Colorado
Flash Flood Warning issued August 26 at 2:37PM MDT until August 26 at 4:00PM MDT by NWS Grand Junction CO
AREAS AFFECTED: Rio Blanco, CO
DESCRIPTION: At 237 PM MDT, Trained weather spotters reported debris flows over the southwest corner of the Lee burn scar. Between 0.2 and 0.8 inches of rain have fallen. The expected rainfall rate is 0.2 to 0.6 inches in 30 minutes. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flows which can can consist of rock, mud, vegetation and other loose materials. HAZARD...Flash flooding. Thunderstorms producing flash flooding in and around the Lee Southwest Corner Burn Scar. SOURCE...Trained spotters reported. IMPACT...Life threatening flash flooding of areas in and around the Lee Southwest Corner Burn Scar. Some locations that will experience flash flooding include... mainly rural areas of South Central Rio Blanco County This includes the following streams and drainages... West Fork Stewart Gulch, Dry Fork Piceance Creek, Dry Thirteenmile Creek, Main Prong Dry Fork Piceance Creek, Stewart Gulch, East Fork Stewart Gulch, Story Gulch and Piceance Creek.
INSTRUCTION: This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the 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 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
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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