Weather Alert in Oregon
Winter Weather Advisory issued February 18 at 4:58AM PST until February 18 at 10:00AM PST by NWS Medford OR
AREAS AFFECTED: South Central Oregon Coast; Curry County Coast
DESCRIPTION: * WHAT...Wet snow expected. Total snow accumulations up to 3 inches. Best chance of accumulation is above 500 feet, but brief accumulation is possible even down to sea level. * WHERE...Curry County Coast and South Central Oregon Coast. Including the locations of...Coos Bay, Coquille, North Bend, Reedsport, Bandon, Myrtle Point, Port Orford, Powers, Gold Beach, Harbor, Nesika Beach, Ophir, Pistol River. * WHEN...Until 10 AM PST this morning. * IMPACTS...Plan on slippery road conditions and delays in your commute. The hazardous conditions could impact the morning commute. * ADDITIONAL DETAILS...Another round of snowfall is expected tonight into Thursday. Visit weather.gov/mfr/winter for additional snow probabilities
INSTRUCTION: Slow down and use caution while traveling. Call 511 or visit tripcheck.com for road information.
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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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