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 is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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