Weather Alert in Colorado
Flash Flood Warning issued August 27 at 1:40PM MDT until August 27 at 4:45PM MDT by NWS Denver CO
AREAS AFFECTED: Larimer, CO
DESCRIPTION: FFWBOU The National Weather Service in Denver has issued a * Flash Flood Warning for... The Alexander Mountain burn scar in... Southeastern Larimer County in north central Colorado... * Until 445 PM MDT. * At 140 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Alexander Mountain Burn Scar. Up to 0.5 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the warning area will cause debris flows near steep terrain. 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 Alexander Mountain Burn Scar. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Alexander Mountain Burn Scar. * Some locations that will experience flash flooding include... Cedar Cove.
INSTRUCTION: This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Alexander Mountain 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 to higher ground now. Act quickly to protect your life.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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