Topic 7.11: Environmental Considerations Flashcards
When do 70% of lightening strikes occur?
between 8-9pm
how many people per year do lightening strikes kill?
100, more than any other weather condition
how many lightening strikes hit the ground vs how many in the clouds?
1/3 strikes ground
2/3 lightening within clouds
thunderstorms can become threatening within _____________ of ________________.
30 minutes, first sign of thunderstorm
what is damage from lightening related to?
duration and ambridge of exposure to lightening
blunt traumas like fractures and concussions are more common in what type of lightening contact?
indirect, like by the blow.
what is trauma from direct contact from a lightnings?
death
what is lightening attracted to?
metal and high objects
what are the lightening strike conditions if struck on a person?
- cardiac asystole and respirtatory (cardiac arrest)
- confusion
- amnesia
- fractures
- internal organ damage
- brain lesions
highest temperature a lightening strike can reach?
27, 000 degrees celcius
when do you see thermal burns from lightening strikes?
when metal is involved
what is the primary goal in a lightning storm?
seek indoor shelter
how do we know when to stop or resume an activity from lightning?
no exact science.
- count seconds between seeing strikes and hearing thunder and divide it by 5 and thats the approx distance in miles
- if within 30 seconds, stop all outdoor activity and seek shelter
RESUME
- NATA says 30 min after last strike or thunder
is it safe to approach someone who was struck by lightening?
yes
what is the most common lightening burn?
lichtenburg figure
