Weather Alert in Arizona
High Wind Warning issued May 13 at 5:12AM MST until May 13 at 7:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County
DESCRIPTION: * WHAT...Southwest winds 30 to 40 mph with gusts 60 to 70 mph. * WHERE...Little Colorado River Valley. * WHEN...From 8 AM MST /9 AM MDT/ this morning to 7 PM MST /8 PM MDT/ this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Travel will be difficult, especially for high profile vehicles. Areas of blowing dust will lead to reduced visibilities, resulting in hazardous driving conditions.
INSTRUCTION: Secure loose objects that could be blown around or damaged by the wind. Winds this strong will make driving extremely difficult, especially for high profile vehicles, such as RVs, campers, and tractor trailers. Use extreme caution and avoid unnecessary travel.
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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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