Weather Alert in California
Winter Storm Warning issued February 21 at 3:56AM PST until February 22 at 4:00PM PST by NWS Medford OR
AREAS AFFECTED: Western Siskiyou County; South Central Siskiyou County; North Central and Southeast Siskiyou County
DESCRIPTION: * WHAT...Heavy snow expected Above 4500 feet in Siskiyou County. Total snow accumulations 5 to 10 inches. South to southeast winds gusting as high as 60 mph over high and exposed terrain. * WHERE...Above 4500 feet in Siskiyou County. This includes the locations of...Bray and Tennant. This also includes the following passes or notable locations...Dead Horse Summit on State Highway 89 at 4489 ft, Etna Summit on Sawyers Bar Rd at 5950 ft, Mt. Shasta ski park highway around 5400 ft, Grass Lake at Mt. Hebron at 5291 ft and Bunny Flat on Everitt Memorial highway at 6900 ft. * WHEN...From 10 PM this evening to 4 PM PST Sunday. * IMPACTS...Travel may be very difficult to impossible. Strong winds could cause tree damage. * ADDITIONAL DETAILS...The heaviest snow is expected late tonight through Sunday morning. Snow levels begin to rise during Sunday afternoon, shortly before snow tapers off. Visit weather.gov/mfr/winter for snow probabilities.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 511 or visit quickmap.dot.ca.gov for road information.
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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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