Weather Alert in California
Fire Weather Watch issued August 31 at 1:11PM PDT until September 2 at 8:00PM PDT by NWS Eureka CA
AREAS AFFECTED: Lower Middle Klamath; W Mendocino NF/E Mendocino Unit; Trinity
DESCRIPTION: ...ISOLATED DRY THUNDERSTORMS TUESDAY AFTERNOON AND EARLY EVENING... .Isolated dry thunderstorms are expected over the interior high terrain Tuesday afternoon and into early evening. Threats include erratic gusty winds and lightning. Lightning on dry fuels may lead to new fire starts. In addition, gusty winds combined with hot temperatures and low relative humidity will produce critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. The National Weather Service in Eureka has issued a Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...Fire weather zone 204.Fire weather zone 277.Fire weather zone 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 35 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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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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