Transcript weather
Types of Severe WEATHER and Fronts Objective: Can I use meteorological data to predict weather? Weather A daily change in the condition of the atmosphere Our Sun The sun provides the that is responsible for all of Earth’s weather Types of weather Severe weather Tornado • A severe storm that forms as rapidly rotating funnel cloud. • The peak season in Tennessee is March – May Tropical Storms/Hurricanes • Low pressure storm with high winds from the ocean Categories of Hurricanes 1. 74-95 mph – minimal hurricane 2. 96-110 mph – moderate hurricane 3. 111-130 mph – extensive hurricane 4. 131-155 mph – extreme hurricane (Andrew) 5. >155 mph – catastrophic hurricane Fronts • The point where two air masses meet • Causes change in weather Warm Front • Warm air mass • Will rise over cool air mass and gradually replaces the cold air. • Cause light rain followed by hot humid weather Cold Front • A cold air mass • Cold front will push under warm front • Causes severe weather- heavy rains and thunderstorms • Followed by cool weather Occluded Front • Forms when a warm air mass is caught between two colder air masses. • Has cool temperatures and large amounts of rain and snow. Stationary Front • Forms when a cold air mass meets a warm air mass. Both air masses do not have enough force to life the warm air mass over the cold. • Days of cloudy, wet weather. Review Questions 1.Can you show me a cold front on this map? 2. Can you find a warm front on this map? 3. Can you find the occluded front on this map? 4. Can you find the stationary front on this map? 5.What type of weather is the northeast having? 6. Sharon woke up on a sunny morning and ate breakfast. Then she looked outside and saw tall, quickly-forming clouds. The clouds looked ready to rain. When she turned on the TV, she saw just what she thought--a forecast for sudden rains. What most likely caused the change in weather? A. lack of wind B. an expanding warm air mass C. a warm front overtaking a cold air mass D. a cold front overtaking a warm air mass