Weather Alert in Idaho
Red Flag Warning issued July 8 at 1:07PM MDT until July 9 at 9:00PM MDT by NWS Pocatello ID
AREAS AFFECTED: Upper Snake River Valley/Idaho Falls BLM; Caribou Range/Caribou NF
DESCRIPTION: ...RED FLAG WARNING FOR LOW HUMIDITY AND GUSTY WIND WEDNESDAY AFTERNOON AND EVENING IN EASTERN IDAHO... .A dry cold front will approach Idaho from the west on Wednesday. This will have the effect of increasing the wind prior to the arrival of the cold air on Wednesday night. Wednesday afternoon and evening will see the combination of humidity below 15 percent and wind gusts of 25 or 30 mph produce dangerous conditions for areas where this occurs and where fuels are receptive to fire. The National Weather Service in Pocatello has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 3 PM to 9 PM MDT Wednesday. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM and Fire Weather Zone 413 Caribou Range/Caribou NF. * WINDS...Southwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...When these weather conditions combine with critically dry fuels, extreme fire behavior, including intensity and spread rate, can result.
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.
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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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