Weather Alert in Louisiana
Severe Thunderstorm Warning issued February 15 at 1:06AM CST until February 15 at 1:45AM CST by NWS New Orleans LA
AREAS AFFECTED: Jefferson, LA; Lafourche, LA; Orleans, LA; St. Charles, LA; St. James, LA; St. John The Baptist, LA; Terrebonne, LA
DESCRIPTION: At 105 AM CST, severe thunderstorms were located along a line extending from near Mandeville to 10 miles north of Kenner to near Killona to 13 miles southwest of Bayou Cane, moving east at 45 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... New Orleans, Kenner, Houma, Thibodaux, Reserve, Metairie, Hahnville, Laplace, Avondale, Larose, Cut Off, Jefferson, Harahan, Westwego, Gramercy, Lutcher, Lockport, Mathews, Schriever, and Montz. This includes the following Interstates... Interstate 10 in Louisiana between mile markers 196 and 231. Interstate 55 in Louisiana between mile markers 1 and 13. Interstate 310 between mile markers 1 and 11.
INSTRUCTION: A Tornado Watch remains in effect until 500 AM CST for southeastern Louisiana. For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
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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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