Weather Alert in Texas
Flash Flood Warning issued June 12 at 12:40AM CDT until June 12 at 5:00AM CDT by NWS Austin/San Antonio TX
AREAS AFFECTED: Bexar, TX; Comal, TX; Guadalupe, TX; Hays, TX
DESCRIPTION: FFWEWX The National Weather Service in Austin/San Antonio has issued a * Flash Flood Warning for... Northeastern Bexar County in south central Texas... Central Comal County in south central Texas... West Central Guadalupe County in south central Texas... Central Hays County in south central Texas... * Until 500 AM CDT. * At 1240 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Antonio, Austin, New Braunfels, Schertz, Cibolo, Converse, Universal City, Live Oak, Selma, Dripping Springs, Wimberley, Canyon Lake Dam, Randolph AFB, San Antonio Int Airport, Canyon Lake, Alamo Heights, Windcrest, Terrell Hills, Bulverde and Garden Ridge.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Stay away or be swept away. River banks and culverts can become unstable and unsafe.
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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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