Weather Alert in California
Winter Storm Warning issued February 15 at 9:57AM PST until February 19 at 9:00AM PST by NWS San Diego CA
AREAS AFFECTED: Riverside County Mountains
DESCRIPTION: * WHAT...Heavy snow expected. For first round Monday, 3-6 inches expected between 6000-7000 ft, 6-12 inches expected above 7000 ft, up to 24 inches above 8000 ft. West winds gusting to 55 mph on the ridges and desert slopes. Occasional light snow during the day Tuesday. Next round of moderate snow Wednesday into Thursday morning with additional snow totals of 4-9 inches 6000-7000 ft, and up to 12 inches above 8000 ft. Wind gusts as high as 70 mph possible on the desert slopes of the mountains late Tuesday and Wednesday. A few additional inches of snow expected Thursday. * WHERE...Riverside County Mountains. * WHEN...From 10 AM Monday to 9 AM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...For the first round Monday, snow levels will start around 7000 ft and fall to near 5000 ft. Lower snow levels near 4,000 feet possible Wednesday morning and Thursday.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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