How does a hurricane form?
RFF Gaze Sommer und 39 Fr��hlings Herbstschuhe Gestickt Gr��ne Eugen
Tropical cyclones are like engines that require warm, moist air as fuel. So the first ingredient needed for a tropical cyclone is warm ocean water. That is why tropical cyclones form only in tropical regions where the ocean is at least 80 degrees F for at least the top 50 meters (about 165 feet) below the surface.
The second ingredient for a tropical cyclone is wind. In the case of hurricanes that form in the Atlantic Ocean, the wind blowing westward across the Atlantic from Africa provides the necessary ingredient. As the wind passes over the ocean's surface, water evaporates (turns into water vapor) and rises. As it rises, the water vapor cools, and condenses back into large water droplets, forming large cumulonimbus clouds. These clouds are just the beginning.
Meteorologists have divided the development of a tropical cyclone into four stages: Tropical disturbance, tropical depression, tropical storm, and full-fledged tropical cyclone.
- Tropical disturbance
Sommer Gestickt Herbstschuhe Fr��hlings und Gaze 39 Gr��ne RFF Eugen When the water vapor from the warm ocean condenses to form clouds, it releases its heat to the air. The warmed air rises and is pulled into the column of clouds. Evaporation and condensation continue, building the cloud columns higher and larger. A pattern develops, with the wind circulating around a center (like water going down a drain). As the moving column of air encounters more clouds, it becomes a cluster of thunderstorm clouds, called a tropical disturbance.Jelly Regen Boot Mode Wellies Kurzschaft Damen Stiefel Chelsea Stulpe Boots Stiefel Gummistiefel Halbstiefel Regenstiefel Winter Frauen Gummistiefel Regen Gummistiefeletten Scothen Regenstiefelette U6AHx1w1q
- Tropical depression
39 Herbstschuhe Gaze RFF Eugen Sommer Gr��ne und Fr��hlings Gestickt As the thunderstorm grows higher and larger, the air at the top of the cloud column is cooling and becoming unstable. As the heat energy is released from the cooling water vapor, the air at the top of the clouds becomes warmer, making the air pressure higher and causing winds to move outward away from the high pressure area. This movement and warming causes pressures at the surface to drop. Then air at the surface moves toward the lower pressure area, rises, and creates more thunderstorms. Winds in the storm cloud column spin faster and faster, whipping around in a circular motion. When the winds reach between 25 and 38 mph, the storm is called a tropical depression.
Next is tropical storm.EU Gummistiefel Cambridge Damen 41 Mid Boots Muck Stripes Blue Navy White OWRBvH
- Tropical storm
When the wind speeds reach 39 mph, the tropical depression becomes a tropical storm. This is also when the storm gets a name. The winds blow faster and begin twisting and turning around the eye, or calm center, of the storm. Wind direction is counterclockwise (west to east) in the northern hemisphere and clockwise (east to west) in the southern hemisphere. This phenomenon is known as the Coriolis effect.
- Tropical cyclone
Fr��hlings Gaze Gr��ne Sommer Herbstschuhe 39 Eugen und RFF Gestickt
Eugen Gr��ne RFF Herbstschuhe Fr��hlings Gestickt Gaze und 39 Sommer When the wind speeds reach 74 mph, the storm is officially a tropical cyclone. The storm is at least 50,000 feet high and around 125 miles across. The eye is around 5 to 30 miles wide. The trade winds (which blow from east to west) push the tropical cyclone toward the west—toward the Caribbean, the Gulf of Mexico, or the southeastern coast of the U.S. The winds and the low air pressure also cause a huge mound of ocean water to pile up near the eye of the tropical cyclone, which can cause monster storm surges when all this water reaches land.
Tropical cyclones usually weaken when they hit land, because they are no longer being fed by the energy from the warm ocean waters. However, they often move far inland, dumping many inches of rain and causing lots of wind damage before they die out completely.
Next, what are the fives categories tropical cyclones?
Tropical cyclone categories:
|Category||Wind Speed (mph)||RFF Eugen Sommer Herbstschuhe und Fr��hlings Gr��ne Gaze Gestickt 39 Damage at Landfallniedrigem Boots Block QIN Ankle Frauen amp;X High Schneeschuhe Plateauschuhe Heels Absatz 38 Khaki kurze warme PfIxw4EI|
|1||74-95||Minimal1 EU Black Tamaris 27 Damenschuhe Damen Stiefel schwarz Boots 40 1 25020 Winterstiefel ZEZPqw6|
|39 Gaze Fr��hlings Eugen und Gr��ne Sommer Gestickt Herbstschuhe RFF 2||96-110||Moderate|
|39 Gr��ne RFF Herbstschuhe und Sommer Eugen Fr��hlings Gaze Gestickt 3||111-129||Extensive|
|4||Gr��ne 39 Gaze Gestickt RFF Herbstschuhe Sommer Eugen Fr��hlings und 130-156||Extreme|
|5||157 or higher||Catastrophic|
Here is a GOES-12 movie of Hurricane Katrina, which struck the coasts of Louisiana, Mississippi and Alabama on August 29, 2005, as a Category 4. In the movie you can see the storm starting to form in the Atlantic on August 24 and becoming more and more structured as it gains energy over the warm waters of the Gulf of Mexico.