Weather Alert in Oregon
Red Flag Warning issued July 29 at 2:15PM PDT until July 29 at 11:00PM PDT by NWS Pendleton OR
AREAS AFFECTED: Central Blue Mountains; Southern Blue Mountains
DESCRIPTION: ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT TUESDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR697, OR698, OR699, OR700, AND OR705... ...RED FLAG WARNING IN EFFECT FROM 1 PM WEDNESDAY TO 11 AM THURSDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR700, OR704, AND OR705... ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM WEDNESDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE WA695... .Multiple rounds of showers and thunderstorms are forecast through Friday. While some of these storms may produce wetting rains, their high-based nature will increase the probability of isolated (today) to scattered (Wednesday) dry thunderstorms. Showers and thunderstorms will be capable of producing gusty and erratic outflow winds up to 60 mph. * AFFECTED AREA...Fire Weather Zones 697 Central Blue Mountains and 698 Southern Blue Mountains. * TIMING...Until 11 PM PDT this evening. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended. * THUNDERSTORMS...Abundant lightning and isolated dry thunderstorms. * OUTFLOW WINDS...Gusty, erratic winds with gusts up to 60 mph.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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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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