Weather Alert in California
Winter Weather Advisory issued February 7 at 11:36AM PST until February 11 at 4:00PM PST by NWS Sacramento CA
AREAS AFFECTED: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
DESCRIPTION: * WHAT...Total snow accumulations 10 to 18 inches above 6000 feet, locally higher over peaks. Snow accumulations 4 to 10 inches above 5000 feet. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park above 5000 feet. * WHEN...From 10 PM Monday to 4 PM PST Wednesday. * IMPACTS...Mountain travel could be very difficult Tuesday into Wednesday. Plan for delays and chain controls. * ADDITIONAL DETAILS...Heaviest snow expected Tuesday into Tuesday evening.
INSTRUCTION: Check the latest road conditions from Caltrans online at quickmap.dot.ca.gov or dial 5 1 1. Be prepared for slippery roads. Slow down and use caution while driving. The hazardous conditions could make travel difficult with delays and chain controls.
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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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