Weather Alert in California
Fire Weather Watch issued July 29 at 12:10AM PDT until July 30 at 11:00PM PDT by NWS Eureka CA
AREAS AFFECTED: Lower Middle Klamath; Trinity
DESCRIPTION: ...ISOLATED TO SCATTERED DRY THUNDERSTORMS POSSIBLE WEDNESDAY AROUND KLAMATH MOUNTAINS... ..Isolated to scattered dry thunderstorms are possible Wednesday afternoon/evening with the highest confidence in NE Trinity County.. The National Weather Service in Eureka has issued a Fire Weather Watch, which is in effect from Wednesday morning through Wednesday evening. * AFFECTED AREA...Fire weather zone 204. Fire weather zone 283. * THUNDERSTORMS...Dry Thunderstorms with associated lightning are of highest concern for NE Trinity, but are also possible for areas in the southwest region of the Klamath Mountains of California. * OUTFLOW WINDS...Gusty erratic outflow winds are possible. * IMPACTS...Lightning strikes may start fires.
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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