Transcript Hurricanes
1. Name one way to stay safe during a tornado. 2. What is the scale that classifies tornadoes? Lesson Essential Question: What are the causes and effects of storms? •Go over bellringer •Weather Updates •Storms Prezi •Hurricane Tracking Activity Hurricanes - Definition A low pressure tropical cyclone that has winds of 119 kilometers per hour or higher. Hurricanes - Formation •Forms over WARM OCEAN WATER as a LOW PRESSURE system. •Development: from a tropical disturbance, to tropical storm, to hurricane 3 Criteria of a Hurricane 1. Low Pressure System 2. Warm Air 3. Warm Water Hurricane - Damage •Brings high waves and severe flooding ***Storm Surge = a “dome” of water that sweeps across the land once a hurricane hits Storm Surge Hurricanes - Damage Hurricanes - Safety Hurricane Watch – hurricane conditions are possible within 36 hours •Be ready to evacuate Hurricane warning – hurricane conditions are expected in 24 hours •Evacuate immediately. Hurricanes – Extra Info Eye – the LOW pressure center of the hurricane. EYE = VERY CALM Winter Storms - Definition A large amount of precipitation that falls as snow Winter Storms - Definition Winter Storms - Formation •Forms because most precipitation begins in the clouds as snow. If the air is colder than 0°C, the precipitation falls as snow. Winter Storms - Damage •High winds can blow falling snow into large drifts and piles •Heavy snow can block roads and trap people in their homes •Extreme cold can cause damage to crops and can cause water pipes to freeze and burst Winter Storms - Safety Outdoors •Find shelter from the wind •Cover exposed parts of your body and try to stay dry In the Car •Keep the engine running to stay warm ONLY IF the exhaust pipe is clear of snow Winter Storms – Extra Info Lake-Effect Snow - the process in which cold dry air moves across a body picking up water vapor and heat. As soon as the air mass reaches the other side of the water, the air rises and cools again. The water vapor condenses and VERY LARGE amounts of snow fall, usually very close to the lake. Saturday, April 2, 2016 Finish the Hurricane Tracking Activity. 1. What is the center of the hurricane called? 2. What two criteria are needed to create a hurricane? 3. _____________________ snow is caused when cool dry air blows over a body of water, causing it to pick up moisture and dump snow on the other side of a lake.