Weather Forecasting: Weather Forecasting Big Question: How can weather be predicted? Climate Can Predict Weather: Climate Can Predict Weather Precipitation Temperature Warm weather can lead to severe storms Monsoons – seasonal winds during summer bringing heavy rains. How monsoons form The affects of monsoons How do monsoons affect an ecosystem positively and negatively? Predicting Weather: Predicting Weather Meteorologists use: Weather balloons Thermometers Computers to collect and analyze data Meteorologists watch: Movements of air masses relayed from satellites Clouds: Clouds Cirrus – high and wispy, made of ice crystals. Stratus - layers of clouds, associated with wind and rain or snow Cumulus – puffy and billowing associated with fair weather Fronts: Fronts Weather and Fronts Cold front Cold air mass moves into a region occupied by warm air The higher the warm air goes, cooler it gets and less able to hold water vapor heavy rain or snow may fall Cold fronts pass quickly Slide 6: Warm front Warm air mass moves into a region occupied by cold air Warm air pushes cold air out and at the same time rises above cold air Warm air cools and forms clouds as air’s water vapor cools Longer periods of precipitation With a partner, use this map to report the weather. Use your knowledge of warm and cold fronts and high and low pressure.: With a partner, use this map to report the weather. Use your knowledge of warm and cold fronts and high and low pressure. Warm front Cold front Low pressure High pressure Causes of Severe Weather: Causes of Severe Weather Tornado updraft of air is rotated by winds near top of cloud Speed is increased by rising of humid air Funnel shaped cloud Hurricane Occurs over water Strong winds begin to circle a low-pressure area over the sea Die out when they reach land but cause damage before they do How are tornadoes and hurricanes similar? How are they different?