Severe Weather Notes

Severe Weather

Weather that is dangerous and can cause harm to people or damage to property.

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Severe Weather

Multiple Choice

In what layer of the atmosphere do storms occur?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

•The National Weather Service (NWS)considers a thunderstorm severe if it produces hail at least three-quarters of an inch in diameter, has winds of 58 miles per hour or higher, or produces a tornado.

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Severe Thunderstorm

Heavy rain from thunderstorms can lead to flash flooding

•Strong winds, hail, and tornadoes are also dangers associated with some thunderstorms

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Severe Thunderstorm

Strong winds, hail, and tornadoes are also dangers associated with some thunderstorms

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Severe Thunderstorm

Lightning is a major threat during a thunderstorm.  It is the lightning that produces thunder in a thunderstorm

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Severe Thunderstorm

Multiple Select

Which are some things that can occur during a severe thunderstorm?​ ​ ​ ​ ​

• heavy rain

• lightening & thunder

• strong winds

• hail
• flash flooding

​ Name changes depending on its location and strength.

Hurricane - Atlantic & North Pacific Ocean
Cyclones- South Pacific & Indian Ocean
Typhoon- Southwest Pacific

Hurricanes, Cyclones & Typhoons

A large, swirling, low-pressure system that forms over tropical oceans. Must have winds  of at least 74 miles per hour.

Hurricanes, Cyclones & Typhoons

Hurricanes form over warm ocean water near the equator.

Hurricanes start as thunderstorms then become a tropical storm before becoming a hurricane.

Hurricanes, Cyclones & Typhoons

​Ocean water must be warmer than 26.5 degrees Celsius (81°F).

A lot of evaporated water vapor from this warm water is the source of energy for hurricanes.

Hurricanes, Cyclones & Typhoons

​ •Hurricanes winds that are faster than 74 mi/hr (cat 1= 74-95mph; cat 5= 157 mph or more)

Hurricanes, Cyclones & Typhoons

Hurricanes will weaken rapidly when they travel over land or colder ocean waters

Hurricanes, Cyclones & Typhoons

Hurricane damage

Katrina 2005

Sandy 2012

Multiple Choice

Hurricanes start out as

• thunderstorms

• rain storms

• snow storms

• hurricanes

Drag and Drop

Hurricanes form over ​ ​

Placeholder

​ ​

Drag these tiles and drop them in the correct blank above

warm water

cold water

land

north poles

funnel shaped cloud that forms over land, usually during a thunderstorm. Winds must be at least 68-85 miles per hour for a weak tornado.

​Tornadoes

They can be categorized as "weak", "strong", and "violent".

typical strong tornado often has "classic" funnel-shaped cloud.

​Tornadoes

Rotating wind speeds vary from 110 to 200 MPH

less than 2% of all tornadoes reach the 200+ MPH violent category.

​Tornadoes

Categorized F0-F5 (F0- 40-72m/h winds) (F5-261-318 m/h winds)

​Tornadoes

Tornado Damage

Kentucky 2021

Multiple Choice

Tornadoes start in

• hurricanes

• snow storms

• thunderstorms

Dropdown

Tornadoes form over ​

Select answer

Multiple Choice

Which storm lasts longer?

• hurricane

• thunderstorm

• tornado

A prolonged period of abnormally low rainfall leading to a shortage of water.

Can be destructive and have long term effects on ecosystems.

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​Drought

Can develop quickly and last a matter of weeks but usually last months or years.

•Dry conditions can lead to brush fires or wildfires

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​Drought

3 major types of drought:

Meteorological drought is based on the degree of dryness (rainfall deficit) and the length of the dry period.

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​Drought

3 major types of drought:

Agricultural drought is based on the impacts to agriculture by factors such as rainfall deficits, soil water deficits, reduced groundwater, or reservoir levels needed for irrigation.

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​Drought

3 major types of drought:

Hydrologic drought is based on the impact of rainfall deficits on the water supply such as stream flow, reservoir and lake levels, and groundwater table decline.

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​Drought

Match

Match the following

• prolonged period of abnormally low rainfall leading to a shortage of water

• Strong winds, heavy rain or hail, thunder & lightening

• A large swirling low pressure system that forms over tropical oceans.

• funnel shaped cloud that forms over land during a thunderstorm.

drought

severe thunderstorm

hurricane

tornado

• drought

• severe thunderstorm

• hurricane

• tornado

Match

Match the following

drought

hurricane

severe thunderstorm

tornado

• drought

• hurricane

• severe thunderstorm

• tornado

Poll

How well do you understand the difference between the different types of severe weather?

• I can teacher it.

• I can understand it but can't explain it to others

• I know most but still need help

• I understand a little

• What are we learning about again?