Weather Alert in Utah
Flash Flood Warning issued September 12 at 9:43AM MDT until September 12 at 12:45PM MDT by NWS Grand Junction CO
AREAS AFFECTED: Grand, UT
DESCRIPTION: FFWGJT The National Weather Service in Grand Junction has issued a * Flash Flood Warning for... South Central Grand County in east central Utah... * Until 1245 PM MDT. * At 943 AM MDT, Doppler radar indicated thunderstorms producing heavy rain training over Salt Wash Valley draining through Arches National Park. Between 0.5 and 0.7 inches of rain have fallen. Additional rainfall amounts of 0.3 to 0.6 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, highways, streets and underpasses as well as other poor drainage and low-lying areas. This includes the following streams and drainages... Salt Wash down to the Colorado River
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Remain alert for flooding even in locations not receiving rain. Arroyos, streams, and rivers can become raging currents in a matter of minutes, even from distant rainfall. It is important to know where you are relative to streams, rivers, or creeks which can become life threatening in heavy rains. Hikers should avoid streams or creeks, climb to higher grounds. Arches National Park is prone to rockslides and flash flooding in heavy rain. Stay alert for rocks and debris on roads, and avoid driving on flooded roads.
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Weather Topic: What are Altocumulus Clouds?
Home - Education - Cloud Types - Altocumulus Clouds
Next Topic: Altostratus Clouds
Similar to cirrocumulus clouds, altocumulus clouds are
characterized by cloud patches. They are distinguished by larger cloudlets
than cirrocumulus clouds but are still smaller than stratocumulus clouds.
Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km)
and may resemble, at times, the shape of a flying saucer.
These uncommon formations, called altocumulus lenticularis, are created by uplift
in the atmosphere and are most often seen in close proximity to mountains.
Next Topic: Altostratus Clouds
Weather Topic: What are Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
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