Weather Alert in Arizona
Special Weather Statement issued August 25 at 2:23PM MST by NWS Phoenix AZ
AREAS AFFECTED: Yuma; Imperial County Southeast; Palo Verde Valley
DESCRIPTION: At 222 PM MST/222 PM PDT/, Doppler radar was tracking a strong thunderstorm 7 miles north of Winterhaven, or 15 miles southwest of Martinez Lake, moving southwest at 10 mph. Strong, gusty winds will be capable of producing areas of blowing dust with reduced visibilities down to one to two miles! HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Winterhaven and Andrade. This includes CA Interstate 8 between mile markers 84 and 95.
INSTRUCTION: If outdoors, consider seeking shelter inside a building. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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
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