Weather Alert in Arizona
Extreme Heat Warning issued June 17 at 12:55PM PDT until June 19 at 10:00PM PDT by NWS Las Vegas NV
AREAS AFFECTED: Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; San Bernardino County-Upper Colorado River Valley; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area
DESCRIPTION: * WHAT...Dangerously hot conditions with temperatures of 110 to 115 degrees expected. * WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort Mohave, Northwest Deserts, Death Valley National Park, Western Mojave Desert, Eastern Mojave Desert, San Bernardino County-Upper Colorado River Valley, Western Clark and Southern Nye County, and Las Vegas Valley. * WHEN...From 10 AM PDT /10 AM MST/ Wednesday to 10 PM PDT /10 PM MST/ Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially when overnight low temperatures remain warm. This results in little to no time to recover from the heat.
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room as much as possible, and stay out of the sun. Check in with relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates.
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Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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