Weather Alert in California
Fire Weather Watch issued September 1 at 12:11AM 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 possible over the interior 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 also produce near critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. * AFFECTED AREA...Fire weather zone 204, 277 and 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 40 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * Additional Impacts...Hot, dry weather and breezy winds will increase the fire danger even in areas away from thunderstorms.
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 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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