Introduction
In August 2005 Hurricane Katrina hit the Gulf Coast of the United States. Katrina caused over 200 billion in damages, took more than 1500 lives and displaced millions from their homes (Ahrens). Even though cyclones are not always as strong or cause as much damage as Katrina it is important that we study how tropical cyclones develop. We can study tropical cyclones to improve predictions and help us prepare for the next devastating storm. Scientists have built computer models that use physical laws and how they react with the earth’s atmosphere, land and water that can predict the path and strength of these storms (Landsea). Although tropical cyclones cause damage and take peoples lives they are still important because they help regulate temperature by taking heat near from the tropics and distributing it to places that need heat like the colder climates (Ahrens). Tropical cyclones develop by the equator and usually travel west gaining strength from warm oceans, sometimes causing billions in damages and hundreds to thousands of deaths, although tropical cyclones cannot be stopped with the help of scientist meteorologist and computer models tropical cyclones can be projected to help people better prepare and minimalize damages. Meteorological Causes/ Concepts A Tropical cyclone is a low-pressure system over tropical waters with thunderstorm activity and circular surface wind circulation (Ahrens). Hurricanes and typhoons are both cyclones. The difference is where they are found. Hurricanes are found in the Caribbean’s and Southeastern United States (Landsea). Typhoons are found in the Northwest Pacific and cyclones are found in the Indian Southeast Pacific such as Madagascar, Australia and India (Landsea). Cyclones have an “eye” which is a circular area in the center of the storm. In the eye there is light wind and no extreme weather. The “eye wall” surrounds the eye and is where the highest surface winds are located. The eye is made up air that is slowly sinking and the eye wall has an upward flow due to updrafts and downdrafts (Ahrens). World Meteorologist Organization compiles a list of names for cyclones depending on the basin. We recycle the list of names every 6 years unless a storm is devastating to a coastline or it causes a lot of damage or casualties in which case we retire the name and never use it again (Ahrens). Atlantic Hurricanes are ranked using the Saffir-Simpson Scale (Areospaceweb.org). The categories are 1-5 and start at 74 miles per hour (mph) and go beyond 157mph (Areospaceweb.org). Category 1 hurricanes are minimal and have winds that range from 74mph- 95mph (Areospaceweb.org). Category 2 hurricanes are moderate and have winds that range from 96mph- 110mph (Areospaceweb.org). Category 3 hurricanes are extensive and have winds that range from 111mph- 129mph (Areospaceweb.org). Category 4 hurricanes are extreme and have winds that range from 130mph- 156mph (Areospaceweb.org). Category 5 hurricanes are catastrophic and have winds that go beyond 157mph (Areospaceweb.org). Category 3, 4 and 5 hurricanes are considered intense hurricanes and cause 83% of damage in the United States even though they only account for 21% of the total tropical hurricanes that hit land (Landsea). The right side of the hurricane is said to be the strongest because the counterclockwise motion of the storm contributes to its swirling winds. Since 1970 China has been hit by the most tropical storms followed by the Philippines, Japan, Mexico and the United States in 5th (Landsea). Tropical Cyclones usually hit 7 areas in the world (Landsea). Labeled number one is the Atlantic basin. Labeled number 2 is the Northeast Pacific basin. Labeled number 3 is the Northwest Pacific basin. Labeled number 4 is the North Indian basin. Labeled number 5 is the Southwest Indian basin. Labeled number 6 is the Southeast Indian/Australian basin and labeled number 7 is the Australian/Southwest Pacific basin (see picture on next page.)
A hurricane is a huge storm! It can be up to 600 miles across and have strong winds spiraling inward and upward at speeds of 75 to 200 mph. Each hurricane usually lasts for over a week, moving 10-20 miles per hour over the open ocean. Hurricanes gather heat and energy through contact with warm ocean waters. Evaporation from the seawater increases their power. Hurricanes rotate in a counter-clockwise direction around an "eye" in the Northern Hemisphere and clockwise direction in the Southern Hemisphere…
flooding or rain. Mexico's interior ministry said Wednesday that the storms are responsible for at least 80 deaths nationwide. And a state-by-state tally indicates the toll could be higher. Deadly storms pelt Mexico, trap tourists Mexico battered by tropical storms In Guerrero state, where Acapulco is located, officials said at least 72 people were killed. Heavy rains and widespread flooding from Manuel there caused mudslides that cut off highways and buried homes, Acapulco Mayor Luis Walton told CNN…
Problem 1 Part A - skin feeling cool on hot summer after getting out of pool Depending on from which and to which phase water is shifting into, heat is always either absorbed or lost in the process. This is known as latent heat. Your skin feels cool in this situation because of the latent heat that is lost as the water evaporates into a gas. This is also an example of sensible heat flux, since it is a feeling the central nervous system can actually sense. Part B - 3 features of general circulation…
Hurricanes 2. a) Why are hurricanes called tropical cyclones and not equatorial cyclones? Hurricanes are called tropical cyclones and not equatorial cyclones because only tropical cyclones that form over the Atlantic Ocean or eastern Pacific Ocean are called “hurricanes”. A hurricane needs the Coriolis Effect to aid the rotation of the cyclone, however this is only strong enough between 5-20 degrees north or south of the equator. b) As the name cyclone suggests the storms cycle. In what direction…
indicates moisture content c = continental, dry m = maritime, humid o uppercase letter indicates source region P = polar source region T = tropical A = arctic E = equatorial • Types o Continental Polar (cP) o Continental Tropical (cT) o Maritime Polar (mP) o Maritime Tropical (mT) • Clash over midlatitudes between polar and tropical air masses o *especially cP and mT Fronts • “front” the leading edge of an air mass • Weather changes behind front o Temperature o Winds o…
Earthquake in Mexico Type of Disaster - Earthquake Location Relative - Guerro City • 262 km S Puebla (pop 1,392,099 ; local time 12:02:49.6 2012-03-20) • 165 km SE Chilpancingo (pop 165,250 ; local time 12:02:49.6 2012-03-20) • 19 km E Ometepec (pop 17,801 ; local time 12:02:49.6 2012-03-20) • 10 km S Xochistlahuaca (pop 3,566 ; local time 12:02:49.6 2012-03-20) Location Geographic - 16.69 N, 98.24 W Hazard/Disaster/Catastrophe - Disaster Date – 2012-03-20 18:02:49.0 UTC Cause of the Disaster…
Topic 2 What is Geography? * -To classify, to compare, to generalize, to ascend from causes and in doing so to trace out the great laws of nature and to mark their influence upon mankind * Geodesy - Study of earths shapes * Cartography- Art and science of map making. * Place – Has spatial boundaries, theses differences may be physical or cultural. * Environment – How humans view a landscape, how does environment effect us. * * Development Of Geography – know…
Mirabi 1 Michelle Mirabi Mr. Prieto CG1D1-03 24 November 2014 Man Made? Or Natural? Hurricanes, tornadoes, and volcanoes are all natural disasters. We can not fit global warming into that category. We only have us to blame. The North Atlantic Current is what is responsible for the warm temperatures in the Northern Hemisphere. Dangerous and constant thunderstorms could result in flooding. Global warming has many negative affects on the Earth. In this paper I will be talking about the North Atlantic…
Severe weather And Weather safety What do we know about hurricanes? A hurricane is a tropical low pressure system with winds blowing at speeds of 119 km/h (74 miles per hour) or more – strong enough to uproot trees. Hurricanes Need Water to Form and Grow: A hurricane begins as a group of thunderstorms moving over tropical ocean waters. Thunderstorms form in areas of low pressure. Near the equator, warm ocean water provides the energy that can turn a low-pressure center into a violent…
To what extent can preparedness and planning mitigate the effects of tropical revolving storms? (40 marker) A tropical revolving storm is a term that covers hurricanes, tropical cyclones, typhoons and willy-willies. These intense low-pressure weather systems are associated with catastrophic wind speeds averaging at 120kmph and torrential rainfall. Tropical revolving storms are huge and extremely violent extending to about 500km in diameter. They occur in the tropics and the sub-tropics and form…