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: San Bernardino County Mountains
DESCRIPTION: * WHAT...Heavy snow expected. For first round Monday into early Tuesday, 6-10 inches expected between 6000-7000 ft, 10-18 inches expected 7000-8000 ft, and up to 30 inches above 8000 ft. South winds gusting to 40-60 mph on the ridges and desert slopes. Occasional light snow showers Tuesday. Widespread moderate snow late Tuesday into Wednesday morning, with additional totals 8-15 inches between 6000-7500 ft. Light snow showers expected Thursday. Stronger southwest winds with gusts in excess of 70 mph along the desert slopes possible late Tuesday and Wednesday. A few additional inches of snow expected Thursday. * WHERE...San Bernardino 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 morning and evening commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...For the first round Monday, snow levels will start around 6800-7500 ft and fall to near 5000 ft by early Tuesday morning. Snow levels lowering to around 4000 ft Wednesday morning. Impacts to I-15 near the summit of the Cajon Pass possible Wednesday morning and Thursday morning.
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 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
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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