Clouds
Kirsten Brown
Upper Level Clouds
Cirrus
Fibrous, threadlike, white feather clouds of ice crystals, whose form resembles hair curls. Fine weather
Cirro stratus
Milky, translucent cloud veil of ice crystals, which sometimes causes halo appearances around moon and sun. Rain or Snow
Cirro cumulus
Fleecy cloud; Cloud banks of small, white flakes. Good weather
Middle Level Clouds
Alto cumulus
Grey cloud bundles, sheds or rollers, compound like rough fleecy cloud, which are often arranged in banks. Fair weather
Altostratus
Dense, gray layer cloud, often evenly and opaquely, which lets the sun shine through only a little. Rain
Lower level clouds
Strato cumulus
Cloud plaices, rollers or banks compound dark gray layer cloud. Light rain
Stratus
Evenly grey, low layer cloud, which causes fog or fine precipitation and is sometimes frazzled. Fine weather
Cumulus
Heap cloud with flat basis in the middle or lower level, whose vertical development reminds of the form of towers, cauliflower or cotton. Fair weather
Vertical Clouds
Cumulus
are puffy clouds that sometimes look like pieces of floating cotton. The base of each cloud is often flat and may be only 1000 meters above the ground. The top of the cloud has rounded towers. Fair weather
Cumulo nimbus
a dense towering vertical cloud associated with thunderstorms and atmospheric instability, forming from water vapor carried by powerful upward air currents.
Fog
forms when warm, moist air passes over a cool surface. When the moist, warm air makes contact with the cooler surface air, water vapor condenses to create fog.
radiation fog
advection fog
valley fog
freezing fog
Hurricane Katrina
the morning of August 29, 2005, Hurricane Katrina struck the Gulf Coast of the United States. When the storm hit land, it had a Category 3 rating, it brought winds of 100–140 miles per hour–and was 400 miles across. The storm did a lot of damage, but after was even worse. Levee breaches caused flooding. thousands of people in Louisiana, Mississippi and Alabama were unable to live in their houses, and its estimated that Katrina caused more than $100 billion in damage.
By the time Hurricane Katrina struck New Orleans the morning of Monday, August 29, it had already rained for a long time. When the storm surge arrived, it broke many levees and canals. Water seeped through the soil underneath some levees and swept others away. By 9 a.m., low-lying places were under so much water that people had to go to attics and rooftops for safety. nearly 80 percent of the city was under water.
Katrina left many of New Orleans’s poorest citizens even more vulnerable than they had been before the storm.
In all, Hurricane Katrina killed nearly 2,000 people and affected some 90,000 square miles of the United States.