Week 05: Thunderstorms, Lightning, Hail, & FEMA Mitigation Ideas Flashcards
True or False:
Thunderstorms are the biggest natural hazard threat in Canada and a cause for concern
FALSE - They are NOT the biggest natural hazard threat in Canada.
(Week 05 - Slide 03)
Approximately how many people die annually in Canada from lightning strikes?
9-10 People
(Week 05 - Slide 03)
Thunderstorms and lightning are most common during which months in Canada?
July and August
(Week 05 - Slide 03)
How many thunderstorms are there estimated to be worldwide each year?
16 million
(Week 05 - Slide 06)
At any given moment, there are roughly how many thunderstorms in progress?
2,000 thunderstorms
(Week 05 - Slide 06)
There are about 100,000 thunderstorms each year in the U.S. alone, about what percent of these reach severe levels?
About 10%
(Week 05 - Slide 06)
There are four types of thunderstorms, what are they?
- Single-cell thunderstorms
- Multi-cell thunderstorms
- Squall line
- Supercell
(Week 05 - Slide 09)
The lifecycle of a thunderstorm has three stages, what are they?
- Developing Stage
- Mature Stage
- Dissipating Stage
(Week 05 - Slide 16)
Fill in the blank:
Thunderstorms generate __________ which, in turn, causes _______.
Lightning, Thunder
(Week 05 - Slide 24)
What is a major cause of weather-related deaths in Canada during the summer and one of the major causes of forest fires in the country?
Lightning
(Week 05 - Slide 24)
How are hailstones formed?
When raindrops are carried upward by thunderstorm updrafts into extremely cold areas of the atmosphere and freeze.
(Week 05 - Slide 41)
How do hailstones increase/grow in size?
By colliding with liquid water drops that freeze onto the hailstone’s surface
(Week 05 - Slide 41)
What causes the hail to eventually fall?
When the thunderstorm’s updraft can no longer support the weight of the hailstone, which can occur if the stone becomes large enough or the updraft weakens.
(Week 05 - Slide 41)
What are the consequences of hail? (4)
- Crop damage
- Property damage
- Injury
- Rarely death
According to the FEMA Mitigation Ideas document, what are the two Structure and Infrastructure Projects to mitigate the impacts of hail?
- Locate Safe Rooms to Minimize Damage
- Protect Buildings from Hail Damage
(Week 05, FEMA - p.34)
According to the FEMA Mitigation Ideas document, what is the Education and Awareness Program to mitigate the impacts of hail?
Increase Hail Risk Awareness
(Week 05, FEMA - p.34)
According to the FEMA Mitigation Ideas document, what is the Structure and Infrastructure project to mitigate the impacts of lightning?
Protect Critical Facilities and Equipment
(Week 05, FEMA - p.40)
According to the FEMA Mitigation Ideas document, what is the Education and Awareness Program to mitigate the impacts of lightning?
Conduct Lightning Awareness Programs
- Brochures distributed by recreation retailers or outfitters in mountainous areas
- Brochure with water bills
- Warning signage at parks
- School children education
(Week 05, FEMA - p.40)
