Weather Alert in Oklahoma
Flood Watch issued April 25 at 2:12PM CDT until April 26 at 7:00PM CDT by NWS Norman OK
AREAS AFFECTED: Harmon; Greer; Kiowa; Jackson; Tillman; Comanche; Stephens; Murray; Cotton; Jefferson; Carter; Johnston; Love; Marshall; Bryan; Hardeman; Foard; Wilbarger; Wichita; Knox; Baylor; Archer; Clay
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of Oklahoma, including the following counties, Bryan, Carter, Comanche, Cotton, Greer, Harmon, Jackson, Jefferson, Johnston, Kiowa, Love, Marshall, Murray, Stephens and Tillman and northern Texas, including the following counties, Archer, Baylor, Clay, Foard, Hardeman, Knox, Wichita and Wilbarger. * WHEN...From 1 AM CDT Saturday through Saturday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Heavy rainfall from thunderstorms may lead to localized flash flooding across the watch area. - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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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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