Weather Alert in California
Dense Smoke Advisory issued September 7 at 3:12PM PDT until September 8 at 11:00AM PDT by NWS Reno NV
AREAS AFFECTED: Mono
DESCRIPTION: * WHAT...Dense smoke reducing visibility to 1 mile or less at times. Smoke will also lead to degraded air quality. * WHERE...Mono County. * WHEN...Until 11 AM PDT Monday. * IMPACTS...Hazardous travel due to reduced visibility, especially along US-395 and over southern Mono County. Poor air quality may cause health issues for those with respiratory illnesses. * ADDITIONAL DETAILS...For details on health impacts and recommended precautions, please consult the Great Basin Unified Air Pollution Control District at GBUAPCD.org and AirNow.gov.
INSTRUCTION: Persons with respiratory illnesses should remain indoors to avoid inhaling smoke.
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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
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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