Weather Alert in California
Cold Weather Advisory issued February 19 at 11:45AM PST until February 20 at 9:00AM PST by NWS Eureka CA
AREAS AFFECTED: Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast; Southwestern Mendocino Interior; Southeastern Mendocino Interior; Southern Lake County
DESCRIPTION: * WHAT...Very cold temperatures as low as 22 expected for inland areas. Very cold temperatures as low as 27 expected for coastal areas. * WHERE...Del Norte, Humboldt, and Mendocino Coast, Southern Mendocino Interior, and Southern Lake. * WHEN...From midnight tonight to 9 AM PST Friday. * IMPACTS...Very cold temperatures can lead to hypothermia with prolonged exposure.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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
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