Weather Alert in California
Winter Storm Warning issued February 17 at 3:00PM PST until February 19 at 6:00AM PST by NWS Eureka CA
AREAS AFFECTED: Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County
DESCRIPTION: ...PERIODS OF RAIN AND SNOW SHOWERS WILL CONTINUE THROUGH THURSDAY MORNING... .Rain, snow and small hail showers are expected to diminish tonight and Wednesday with another round of low snow, rain and small hail Wednesday night evening through early Thursday morning. * WHAT...Heavy snow elevations above 2000 feet. Additional snow accumulations up to 8 inches. * WHERE...Lake County, and Northern Mendocino Interior. * WHEN...Until 6 AM PST Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions will impact the Tuesday evening and Wednesday morning commutes. Snow chains may be required. * ADDITIONAL DETAILS...Snow levels are around 2000 feet through Wednesday. There is a potential for snow levels as low as 1500 feet with the heaviest snowfall.
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. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.
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Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
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