Weather Alert in California
Winter Weather Advisory issued March 30 at 12:38PM PDT until April 1 at 5:00PM PDT by NWS Medford OR
AREAS AFFECTED: South Central Siskiyou County
DESCRIPTION: * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations between 1 and 3 feet possible. Winds gusting as high as 50 mph. For the Winter Weather Advisory, snow expected. Total snow accumulations between 2 and 8 inches possible, with up to 12 inches of snow possible at Snowmans Summit. * WHERE...For the Winter Storm Warning, portions of Siskiyou County above 4500 feet, including the Mount Shasta highlands, Medicine Lake, and the Klamath, Salmon, and Trinity mountains, as well as Etna Summit and Scott Mountain Summit. For the Winter Weather Advisory, portions of I-5 south of Weed and Highway 89, including Mount Shasta City, Dunsmuir, and McCloud. * WHEN...For the Winter Storm Warning, from 11 PM this evening to 5 PM PDT Tuesday. For the Winter Weather Advisory, from 11 PM Monday to 5 PM PDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage.
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. Slow down and use caution while traveling. Call 511 or visit quickmap.dot.ca.gov for road information.
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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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