Weather Alert in California
Winter Storm Warning issued February 18 at 2:32PM PST until February 19 at 10:00AM PST by NWS Medford OR
AREAS AFFECTED: Western Siskiyou County
DESCRIPTION: ...ANOTHER EPISODE OF LOW ELEVATION SNOW LATE TONIGHT INTO THURSDAY... .Scattered to numerous light snow showers will persist through this evening with snow levels around 1500 to 2000 feet and accumulation of up to 2 inches. The next cold front will follow with widespread accumulations of snow late tonight into Thursday morning and snow levels around 1000 to 1500 feet. Light snow showers will then taper off into Thursday afternoon while snow levels rise to 2000 feet, except for snow showers lingering into Thursday evening for eastern Klamath, Lake, and Modoc Counties. * WHAT...Heavy snow. Additional snow accumulations 4 to 12 inches at elevations above 3000 feet and 1 to 5 inches at elevations below 3000 feet. Snow levels near 2000 feet will fall to valley floors overnight. A majority of the snow is expected between Midnight and 7 AM PST Thursday morning, with light snow showers then tapering off through the morning. * WHERE...In western Siskiyou County. This includes all of Highway 96 and 3, and Etna Summit on Sawyers Bar Rd. This also includes the Klamath River and Scott Valleys, the communities of Happy Camp, Somes Bar, Etna, Greenview, and Callahan. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel may be very difficult to impossible. The hazardous conditions could impact the Thursday morning commute. * ADDITIONAL DETAILS... Visit weather.gov/mfr/winter for additional 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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