Weather Alert in Washington
Red Flag Warning issued September 5 at 8:53PM PDT until September 7 at 3:00AM PDT by NWS Spokane WA
AREAS AFFECTED: East Washington Central Cascades; Central Washington Cascade Foothills; Waterville Plateau; Western Columbia Basin
DESCRIPTION: ...SCATTERED THUNDERSTORMS SATURDAY AFTERNOON INTO SATURDAY NIGHT... .Scattered thunderstorms will develop in the Cascades starting Saturday afternoon and expand into the western Columbia Basin during the evening and overnight hours with potential for abundant lightning. Storms will also be capable of gusty outflow winds of 30 to 40 mph. The National Weather Service in Spokane has issued a Red Flag Warning for thunderstorms, which is in effect from 4 PM Saturday to 3 AM PDT Sunday. * Affected Area: East Washington Central Cascades (Zone 696), Foothills of Central Washington Cascades (Zone 705), Waterville Plateau (Zone 706) and Western Columbia Basin (Zone 707). * Thunderstorms: Scattered thunderstorms with rainfall amounts between a trace and 0.15" * Outflow Winds: Gusty and erratic outflow winds of 30 to 40 mph. * Impacts: New fire starts are likely with thunderstorms. Gusty outflow winds may lead to fire spread with 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 Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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