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 is Evaporation?
Home - Education - Precipitation - Evaporation
Next Topic: Fog
Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
Next Topic: Fog
Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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