Severe Weather.

Slides:



Advertisements
Similar presentations
Overview All tstorms are not created equal Severe thunderstorms produce the most violent weather conditions on Earth Supercells – characterized by intense,
Advertisements

Storms  Unit 5 Earth Science.
Ch. 13 – The Nature of Storms
Tornadoes Tornadoes We will be reading the book Night of the Twisters. The book is about tornadoes.
Robert W. Christopherson Charlie Thomsen Chapter 8 Weather.
The Nature of storms. I. Thunderstorms A. At any given moment, nearly 200 thunderstorms are occurring around the world. 1. Cumulonimbus clouds produce.
Severe Weather 13-2 Supercells Cold fronts often are accompanied by high pools of cold air The strength of the updrafts and downdrafts intensify –Self-sustaining.
Severe Weather SWBAT explain why some thunderstorms are more severe than others; recognize the dangers of severe thunderstorms; describe how tornadoes.
Chapter 13 The Nature of Storms
Chapter 13.  How thunderstorms form:  1. Moisture: There must be an abundant source of moisture in the lower levels of the atmosphere.  2. Lifting:
Severe Weather Thunderstorms, Tornadoes, Hurricanes, etc…
Nature of Storms Chapter 13.
Thunderstorms. Definition: a storm containing lightning and thunder. Associated with midlatitude cyclones, localized convection, orographic lifting and.
Barometric Pressure – The pressure due to the weight of the atmosphere.
Severe Weather: Thunderstorms and Tornadoes EQ: What can we learn from severe weather to help prevent other disasters? (What can we do to keep safe?)
Severe Storms. Thunderstorms Occur in warm, moist air masses and along fronts. Sinking rain, cooled air, and strong updrafts of warm air cause strong.
Violent Storms. THUNDERSTORMS FORM IN WARM,MOIST UNSTABLE AIR. CUMULONIMBUS CLOUDS. ATTAIN HEIGHTS OF 20 KM. TORRENTIAL RAIN,DAMAGING WINDS, LIGHTNING,
The Nature of Storms There are 3 Stages of a thunderstorm:
Winds can exceed 300 mph! Winds can exceed 300 mph! Around 1,000 occur on average each year in the U.S. Around 1,000 occur on average each year in the.
Objectives Explain why some thunderstorms are more severe than others. Recognize the dangers of severe weather, including lightning, hail, and high winds.
Guided Notes about Severe Weather
Severe Weather. Watch Vs. Warning Watch= The conditions are right for severe weather. –Stay tuned to reports Warning= Severe weather has been sighted.
Section 3 Severe Weather
Severe Weather 1.Thunderstorms 2.Tornadoes 3.Hurricanes.
4.3 Severe Weather Pages (R) Severe Weather Pages
Tornadoes Ashley Sacchetti MAIN MENU.
Bell Ringer Cumulonimbus clouds have a tall structure and a flat base. What are they usually associated with?
Thunderstorms.
Chapter 13.1 Thunderstorms
Free Science Videos for Kids
Bellringer How might large bodies of water influence climate?
Ch 13 The Nature of Storms.
Tornadoes By: Aiden and Braden.
THUNDERSTORMS.
Storms.
Thunderstorms, Tornadoes and Hurricanes
The Nature of Storms Topic 7.
Severe Weather MYP 1.
Storms Chapter 13.
Storms: Violent disturbances within the atmosphere.
Thunderstorms, Tornadoes, and Hurricanes
Severe Weather. Tornadoes… Cyclones… Typhoons… Hurricanes… And more!
Bellwork 5/11 Happy Friday!! 
Forms of Severe Weather
Storms: Violent disturbances within the atmosphere.
Warm-up Explain the difference between climate and weather.
Severe Weather!!!!!!! Chapter 20.3
25 minutes to finish atmosphere layer foldable
The Air Around You-Part 3 Stormy Skies
Section 2: Severe Weather
Ch. 13 – The Nature of Storms
SCIENCE NEWS.
Tornadoes By: Aiden and Braden.
Severe Weather.
Thunderstorms and Tornadoes
Severe Weather.
Chapter 12 Section 9 What causes severe storms?
Severe Weather!!!!!!! Chapter 20.3
What do you like to do during a thunderstorm???
Pg. 250 For each type of Weather System:
Severe Weather!!!!!!! Chapter 20.3
Weather Systems Vocabulary
Severe Weather.
Thunderstorms Rain Strong winds
Thunderstorms and Tornadoes
Severe Storms Unit 8 - Chapter 20.3.
SCIENCE NEWS.
Chapter 12 Section 9 What causes severe storms?
TORNADOS.
Environmental Science – Severe Weather
Presentation transcript:

Severe Weather

Supercells Supercells are self-sustaining, extremely powerful storms Supercells can last for several hours and have updrafts as strong as 150mph. There is about 100,000 thunderstorms in the U.S. each year and 10% of them are severe.

Lightning Lightning is a massive electrical discharge between clouds or a cloud and the ground Lightning is caused by friction from the rapid rush of air in a cumulus cloud Lightning carries about 100 million volts of electricity and heats the surrounding air to about 30,0000C.

Thunder Thunder is sound produced as superheated air rapidly expands and contracts. You may see lightning well before you hear thunder because light travels faster than sound even though they are produced at the same time.

Wind Violent downdrafts that are concentrated to a local area are downbursts. Macrobursts can destroy an area 3 miles wide and have wind speeds more than 125mph. Microbursts can destroy an area less than 2 miles wide and can have winds exceeding 155mph.

Hail Hail is precipitation in the form of balls or lumps of ice. Hail forms when ice gets caught in strong updrafts and continues to get larger.

Tornadoes A tornado is a violent, whirling column of air in contact with the ground. Tornadoes are called funnel clouds before they touch the ground.

Tornado Classification Tornadoes are classified according to the Enhanced Fujita scale. The scale ranges from EF0 to EF5. Weak tornadoes (EF0 and EF1) 80% of all tornadoes Path: up to 3 miles

Tornado Classification Weak tornadoes (EF0 and EF1) 80% of all tornadoes Path: up to 3 miles Wind speed: 60 to 155mph Duration: 1-10 min

Tornado Classification Strong tornadoes (EF2 and EF3) 19% of all tornadoes Path: up to 15 miles Wind speed: 110 to 205mph Duration: 20+ min

Tornado Classification Violent tornadoes (EF4 and EF5) 1% of all tornadoes Path: up to 50 miles Wind speed: over 200mph Duration: over 1 hour

There are more tornadoes in the U.S. than anywhere else in the world. The majority of those tornadoes in the U.S. occur in region called “Tornado Alley” which extends through Texas, Oklahoma, Kansas, and Missouri.