Weather test 2 Flashcards
(55 cards)
storm with lightning, thunder, heavy rain and sometimes hail. Unstable weather.
Thunderstorm
Forms due to strong sea breeze in tropic or cold fronts
Thunderstorm
take place within storm clouds
Sheet lightning
Form when fast rising air in the thunderstorm is hit by high altitude horizontal winds and begins spinning, forming a funnel of air and moisture.
Tornado
the result of static charge caused by friction as ice crystals carried in the updrafts collide with drops of pellets in downdrafts. Charge builds up until it is strong enough to cause discharge between the areas.
Lightning
Discharges can also occur between negative charges in the cloud and positive on the group. This appears a streaked flash
Streak lightning
created when discharge heats the air causing it to expand rapidly. Light travels quickly in air while sound travels slowly
thunder
Stretching from texas to nebraska, receives an average of 65 tornadoes per year
Tornado alley
severe component of a thunderstorm. A rotating funnel of air extends from the base of the thunderstorm clouds to the ground. Do more damage in a short time than any other storm on Earth because of the high winds. They follow paths difficult to predict
Tornado
Lifting of air must be strong in order to produce clouds that reach high in the atmosphere
Moisture needed to form clouds and precipitation . Moisture condenses and releases thermal energy heating the air.
Formation of thunderstorm
Wind speeds in a tornado are greatest at the center or vortex and it could be as high as
500 km/h
Damage homes by blowing away or collapsing, cars thrown, trees and powerlines uproot and snap, property damage
Tornado damage
severe cyclone occurs in western atlantic ocean, caribbean sea, gulf of mexico and eastern pacific ocean
Hurricane
severe cyclone that develops in the northwest pacific ocean
Typhoon
above 250 km
Catastrophic
predicting weather based on observations of atmospheric condition
Weather forecasting
air is calm, air pressure is low and sky is clear. The eye is calm as the strong surface winds that converge toward the center don’t reach. Some air sinks back into the center, warming it creating the cloud free eye.
Eye of a hurricane
119-153 km
Minimal
154-177 km
Moderate
178-209 km
Exstensive
210-249 km
Extreme
severe cyclone that develops in the Indian ocean and around australia
Tropical cyclone
violent storms, strong winds, blowing snow and freezing temp. Snow does not have to fall. Wind could blow existing snow
Blizzard