Weather Alert in California
Winter Storm Warning issued February 14 at 1:08PM PST until February 18 at 4:00AM PST by NWS Medford OR
AREAS AFFECTED: Western Siskiyou County
DESCRIPTION: * WHAT...Heavy snow expected above 5000 ft through Monday morning with accumulations of 8 to 12 inches expected. After a brief lull in precipitation Monday afternoon, snow levels drop to around 2000 ft Monday night into Tuesday, remaining low through Thursday. Additional snow accumulations 6 to 12 inches are expected with 1 to 2 ft expected above 5000 ft. Winds gusting as high as 40 mph over high and exposed terrain. * WHERE...In western Siskiyou County, elevations above 5000 ft through Monday morning, lowering to 3000 ft Monday evening. This includes Etna Summit on Sawyers Bar Rd and Highway 3 south of Callahan. * WHEN...From 10 AM Sunday to 4 AM PST Wednesday. * IMPACTS...Travel may be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snow levels of 5000 feet on Sunday into Sunday evening are expected to lower to 4500 ft Sunday night then down to 4000 ft Monday. Snow levels lower further Monday night into Tuesday, possibly as low as 1500 ft by Tuesday morning. This could result in light snow accumulations of 1 to 3 inches in the Scott and Klamath River Valleys during Tuesday through Tuesday night. 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 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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