Weather Alert in Oregon
Flash Flood Watch issued July 4 at 8:10AM PDT until July 4 at 8:00PM PDT by NWS Pendleton OR
AREAS AFFECTED: Ochoco-John Day Highlands
DESCRIPTION: Thunderstorms will be capable of producing locally heavy rainfall today, especially this afternoon and evening, over last year's burn scars in the Ochoco-John Day Highlands. * WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Falls, Crazy Creek, Rail Ridge, and Wiley Flat burn scars. * WHERE...A portion of central Oregon, including the following area, Ochoco-John Day Highlands. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Moderate to heavy rainfall over the Falls, Crazy Creek, Rail Ridge, and Wiley Flat burn scars is expected during the period of the watch. Anyone in or near the Falls, Crazy Creek, Rail Ridge, and Wiley Flat burn scars should prepare for potential flooding impacts. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding and debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over the burn scars, which may lead to flash flooding and debris flows. - 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 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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