Weather Alert in Washington
Air Quality Alert issued August 12 at 10:36AM PDT by NWS Seattle WA
AREAS AFFECTED: Mason, WA
DESCRIPTION: An Air Quality Alert has been issued by the Olympic Region Clean Air Agency. An Air Quality Alert has been issued for Mason County, effective until 9 AM PDT Friday August 15 due to the current wildfire smoke from the Bear Gulch Fire. Particulate matter (PM 2.5) levels may reach very unhealthy or hazardous in areas closest to the fire. Health impacts and recommended actions: When air quality is very unhealthy or hazardous, everyone should reduce exposure. Stay inside and filter indoor air to keep it cleaner. Go elsewhere for cleaner air, if needed. Burning restrictions are in effect. For current air quality conditions and additional information visit www.orcaa.org
INSTRUCTION: N/A
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Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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