Weather Phenomena By: Eleanor Joyce City of Salem Schools
Hurricane activity in the United States. http://www.usgs.gov/themes/hurricane.gif
Satellite view of a hurricane in the Caribbean Sea http://topex-www.jpl.nasa.gov/science/images/hurricane.jpg
Parts of the storm Winds are breezy at the edge of the storm and increase to a maximum in the eyewall. Winds are relatively light in the ‘eye’ itself.
The Saffir-Simpson Hurricane Table Sustained Storm Resulting Winds Surge Damage Category 1 74-95 mph 4-5ft Trees/Power Down Category 2 96-110 mph 6-8ft Sign, roof & building damage Category 3 111-130 mph 9-12ft Widespread damage/flooding Category 4 131-155 mph 13-18ft Buildings destroyed/damaged Category 5 155+ mph 19+ft Catastrophic damage/flooding Categories 3,4 & 5 are major hurricanes!
Hurricane Facts Tropical storms need warm water(at least 80 degrees) to grow The average hurricane uses as much energy in a day as the entire US in 6 months Hurricanes can not be stopped with nuclear weapons or cloud seeding
Why are hurricanes so destructive? 1. Wind 2. Rain 3. Storm Surge 4. Tornadoes
No Utilities Including lights, air conditioning, refrigeration, cooking, fans, television, stoplights, gasoline pumps, computers, clocks, banks (ATMs), freezers, refrigerators. Water and sewage treatment centers are also disabled. This creates major health problems. Getting drinking water is a problem
HEAVY RAIN AND FLOODING
Slow moving storms can easily dump 15-20 inches of rain over a wide area. Debris clogs sewers and drainage ways. Flood waters contaminate drinking water High water forces insects, snakes and other wild animals to higher ground (your home). Flood damage not covered by home owners insurance. IT RAINS ONE INCH PER HOUR
Storm Surge Low pressure and converging winds raise sea levels under the hurricane. When the hurricane makes landfall, so does the higher sea level. Powerful waves ride on top of the surge. Storm surge destroys coastal buildings and inundates barrier islands. Storm surge can travel well inland through harbors, rivers, creeks and canals. Storm surge is responsible for the greatest loss of life from a natural disaster in US history, Galveston Is.
Tornadoes Hurricanes often create tornadoes bringing even more severe damage to regions struck by hurricanes
Regions in the U. S that are in “tornado alley.” http://www.usgs.gov/themes/hurricane.gif
Tornadoes are called funnel clouds usgs photo
Map of South Asia and Southeast Asia showing the wind patterns of the winter and summer monsoons http://www2.crl.go.jp/ck/ck121/windprof/image/monsoon.gif
Working in the rice paddies Residents of Asia and Southeast Asia depend on the Monsoon rains to grow rice. http://www.nri.org/WSS-IWRM/Photos/India/paddy.jpg • http://www.millenniumassessment.org/images/photos/rice.paddy.jpg
Bangladesh is often flooded during the monsoon season http://www.sdnbd.org/sdi/issues/climate_change/napa/images/image-flood.jpg http://www.oxfam.org.uk/atwork/emerg/images/Bangcard.jpg