This is a sample of a Hurricane Wilma storm chase video. The footage was taken during the peak of the storm on the Southwest Florida coast in Belle Meade, near Marco Island. Peak winds occur after the lull, associated with the passage of the storm's eye, and are near 100mph with gusts to 120mph.
The Katrina Hurricane
Kinds of Hurricanes
Category One Hurricane:
Sustained winds 74-95 mph (64-82 kt or 119-153 km/hr). Damaging winds are expected. Some damage to building structures could occur, primarily to unanchored mobile homes (mainly pre-1994 construction). Some damage is likely to poorly constructed signs. Loose outdoor items will become projectiles, causing additional damage. Persons struck by windborne debris risk injury and possible death. Numerous large branches of healthy trees will snap. Some trees will be uprooted, especially where the ground is saturated. Many areas will experience power outages with some downed power poles. Hurricane Cindy (pdf) (2005, 75 mph winds at landfall in Louisiana) and Hurricane Gaston (2004, 75 mph winds at landfall in South Carolina) are examples of Category One hurricanes at landfall.
Category Two Hurricane:
Sustained winds 96-110 mph (83-95 kt or 154-177 km/hr). Very strong winds will produce widespread damage. Some roofing material, door, and window damage of buildings will occur. Considerable damage to mobile homes (mainly pre-1994 construction) and poorly constructed signs is likely. A number of glass windows in high rise buildings will be dislodged and become airborne. Loose outdoor items will become projectiles, causing additional damage. Persons struck by windborne debris risk injury and possible death.. Numerous large branches will break. Many trees will be uprooted or snapped. Extensive damage to power lines and poles will likely result in widespread power outages that could last a few to several days. Hurricane Erin (1995, 100 mph at landfall in northwest Florida) and Hurricane Isabel (2003, 105 mph at landfall in North Carolina) are examples of Category Two hurricanes at landfall.
Category Three Hurricane:
Sustained winds 111-130 mph (96-113 kt or 178-209 km/hr). Dangerous winds will cause extensive damage. Some structural damage to houses and buildings will occur with a minor amount of wall failures. Mobile homes (mainly pre-1994 construction) and poorly constructed signs are destroyed. Many windows in high rise buildings will be dislodged and become airborne. Persons struck by windborne debris risk injury and possible death. Many trees will be snapped or uprooted and block numerous roads. Near total power loss is expected with outages that could last from several days to weeks. Hurricane Rita (pdf) (2005, 115 mph landfall in east Texas/Louisiana) and Hurricane Jeanne (2004, 120 mph landfall in southeast Florida) are examples of Category Three hurricanes at landfall.
Category Four Hurricane:
Sustained winds 131-155 mph (114-135 kt or 210-249 km/hr). Extremely dangerous winds causing devastating damage are expected. Some wall failures with some complete roof structure failures on houses will occur. All signs are blown down. Complete destruction of mobile homes (primarily pre-1994 construction). Extensive damage to doors and windows is likely. Numerous windows in high rise buildings will be dislodged and become airborne. Windborne debris will cause extensive damage and persons struck by the wind-blown debris will be injured or killed. Most trees will be snapped or uprooted. Fallen trees could cut off residential areas for days to weeks. Electricity will be unavailable for weeks after the hurricane passes. Hurricane Charley (2004, 145 mph at landfall in southwest Florida) and Hurricane Hugo (1989, 140 mph at landfall in South Carolina) are examples of Category Four hurricanes at landfall.
Category Five Hurricane:
Sustained winds greater than 155 mph (135 kt or 249 km/hr). Catastrophic damage is expected. Complete roof failure on many residences and industrial buildings will occur. Some complete building failures with small buildings blown over or away are likely. All signs blown down. Complete destruction of mobile homes (built in any year). Severe and extensive window and door damage will occur. Nearly all windows in high rise buildings will be dislodged and become airborne. Severe injury or death is likely for persons struck by wind-blown debris. Nearly all trees will be snapped or uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. Power outages will last for weeks to possibly months. Hurricane Camille (pdf) (1969, 190 mph at landfall in Mississippi) and Hurricane Andrew (1992, 165 mph at landfall in Southeast Florida) are examples of Category Five hurricanes at landfall.
posted @ 10:47 AM |
Friday, July 31, 2009
Ways to save earth
In Your Home – Conserve Energy
1.Clean or replace air filters on your air conditioning unit at least once a month.
2.If you have central air conditioning, do not close vents in unused rooms.
3.Lower the thermostat on your water heater to 120.
4.Wrap your water heater in an insulated blanket.
5.Turn down or shut off your water heater when you will be away for extended periods.
6.Turn off unneeded lights even when leaving a room for a short time.
7.Set your refrigerator temperature at 36 to 38 and your freezer at 0 to 5 .
8.When using an oven, minimize door opening while it is in use; it reduces oven temperature by 25 to 30 every time you open the door.
9.Clean the lint filter in your dryer after every load so that it uses less energy.
10.Unplug seldom used appliances.
11.Use a microwave when- ever you can instead of a conventional oven or stove.
12.Wash clothes with warm or cold water instead of hot.
13.Reverse your indoor ceiling fans for summer and winter operations as recommended.
14.Turn off lights, computers and other appliances when not in use.
15.Purchase appliances and office equipment with the Energy Star Label; old refridgerators, for example, use up to 50 more electricity than newer models.
Info
The northern ice cap is entierly ice floating on sea water. Should it melt completely the biggest change will be to the salt content of the surrounding sea, it will not alter the sea level as by sitting on the water already it has displaced the same amount of water it contains as ice. It will affect wildlife that lives on the polar ice cap (Pola Bears, Seals etc) but will not affect man to any great extent.
There are some land masses connected to the northern Ice cap (Iceland and parts of Canada for example) but the amount of run off will make hardly any difference.
The southern ice cap does have a land mass under it, however some of the (the Ice Shelves in particular) are also already displacing sea water which they float on. The best estimates are that if the Southern Polar ice cap melts, the sea will rise two to three feet. Obviously the wildlife will be severely affected and also world wide this could cause serious problems for lowland areas.
There will not be ses level rises of the predicted 3 meters as was first thought as the scientists initially forgot that a lot of the melting ice was already floating on water and therefore would not add to the sea level when it did melt, as the water was already displaced.
If this does happen there will be open sea at the north pole and a land mass at the south pole. Undoubted there will be environmental changes world wide, but the best guesses as to what are still only speculation.
Feelings:
As you can see the info, if the north pole melts, singapore can only at least try to hold on
as it rise about 2 or 3 m, but if South Pole melts, it may rise to about 72 m ! (frm wat i heard from my teacher) . If that happens, everywhere will be flooded...then one side of earth is flooded ,if u think u can escape to another place , wrong idea! the other place, will be at least as hot as 100 degrees! so there is no way u can live...So please all, SAVE EARTH!!!
And watch a movie name ''2012'' is nice! You will be a changed person! (my teacher say one too)
Ps:Will post videos soon! xD and after drink bubble tea or milo recycle ^.^ my teacher just say me today too >.<
posted @ 9:54 PM |