Weather Alert in Arizona
Extreme Heat Watch issued May 27 at 1:02AM PDT until May 31 at 11:00PM PDT by NWS Las Vegas NV
AREAS AFFECTED: Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
DESCRIPTION: * WHAT...Dangerously hot conditions with an major risk for heat related illness and impacts. * WHERE...Lake Mead National Recreation Area, Death Valley National Park, Western Mojave Desert, Eastern Mojave Desert, Northeast Clark County, Western Clark and Southern Nye County, Las Vegas Valley, and Southern Clark County. * WHEN...From Friday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Temperatures Friday and Saturday will reach 104 to 108 in the Lake Mead Recreation Area, 100 to 105 in the Mojave Deserts including Barstow, and 105 to 109 in the valleys of southern Nevada including Pahrump, Las Vegas, and Moapa. Temperatures over 115 are likely in Death Valley.
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, monitor for local cooling shelters openings and assistance locating appropriate shelter from the heat.
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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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