Weather Alert in Washington
Red Flag Warning issued September 2 at 8:32PM PDT until September 4 at 9:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Okanogan Highlands & Kettle Mountains; Selkirk Mountains of Northeast Washington; Foothills of Northeast Washington; Colville Reservation
DESCRIPTION: The National Weather Service in Spokane has issued a Red Flag Warning for unstable thermal trough, which is in effect from noon Wednesday to 9 PM PDT Thursday. * Affected Area: Okanogan Highlands and Kettle Mountains (Zone 699), Selkirk Mountains of Northeast Washington (Zone 700), Foothills of Northeast Washington (Zone 701) and Colville Reservation (Zone 702). * Winds: Terrain driven winds 2 to 5 mph becoming northwest to north overnight 3 to 7 mph. * Relative Humidities: Minimum 10 to 18 percent. Humidity recoveries on midslopes within thermal belts of 25 to 35 percent. * Temperatures: 97 to 103 valleys. 85 to 90 mountains. * Impacts: Hot, dry, unstable conditions will lead to the potential for rapid fire growth on new or existing fires.
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 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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