Weather Alert in Colorado
Flood Watch issued September 11 at 2:51AM MDT until September 13 at 12:00AM MDT by NWS Grand Junction CO
AREAS AFFECTED: Roan and Tavaputs Plateaus; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Grand and Battlement Mesas; Gore and Elk Mountains/Central Mountain Valleys; Central Gunnison and Uncompahgre River Basin; West Elk and Sawatch Mountains; Flat Tops; Upper Gunnison River Valley; Uncompahgre Plateau/Dallas Divide; Northwestern San Juan Mountains; Southwest San Juan Mountains; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Arches/Grand Flat; La Sal and Abajo Mountains
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southwest and west-central Colorado, as well as portions of eastern Utah. Recent burn scars, including Deer Creek, Lee, Elk, South Rim, Turner Gulch, and Stoner Mesa, will be the most susceptible. * WHEN...From 6 AM MDT this morning through Friday evening. * IMPACTS...Excessive runoff from strong thunderstorms may result in debris flows and flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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