Weather Alert in Idaho
Red Flag Warning issued August 14 at 3:49AM MDT until August 14 at 10:00PM MDT by NWS Pocatello ID
AREAS AFFECTED: Caribou Range/Caribou NF; Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River
DESCRIPTION: ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 10 PM MDT THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY, AND ISOLATED TO SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 411, 413, 427, 475 AND 476... * AFFECTED AREA...Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * THUNDERSTORMS...30 to 50 percent coverage. * OUTFLOW WINDS...A dry low level environment will promote stronger storms capable of producing wind gusts up to 55 mph. * WINDS...West 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...10 to 20 percent. * IMPACTS...Critical fire weather conditions are expected Thursday afternoon and evening. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies.
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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
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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