Weather Alert in Washington
Air Quality Alert issued August 13 at 9:32AM 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 are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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