Weather Alert in California
Flood Advisory issued February 24 at 9:38AM PST until February 24 at 4:00PM PST by NWS Eureka CA
AREAS AFFECTED: Humboldt, CA
DESCRIPTION: * WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Northeastern Humboldt County in northwestern California... * WHEN...Until 400 PM PST Tuesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. There will be an increased risk of rock and land slides along roadways. * ADDITIONAL DETAILS... - At 938 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Rapid river rises will cause minor flooding in the advisory area. Between 2 and 3 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Hoopa, Willow Creek, Orleans and Weitchpec. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route if at all possible.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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
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