Weather Alert in Colorado
Flash Flood Warning issued August 27 at 5:36PM MDT until August 27 at 7:30PM MDT by NWS Grand Junction CO
AREAS AFFECTED: Rio Blanco, CO
DESCRIPTION: FFWGJT The National Weather Service in Grand Junction has issued a * Flash Flood Warning for... The Lee Fire burn scar in... South Central Rio Blanco County in northwestern Colorado... * Until 730 PM MDT. * At 536 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Lee Fire Burn Scar. Between 0.3 and 0.5 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow. 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.
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 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
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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