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The really fluffy clouds
Cumulus clouds are usually flat on the bottom, and super fluffy on top. Just like cotton candy!
Low air pressureAn ice stormA cold frontAlien attack
A cold front
When the arrows are red, they represent a warm front!
A storm along the east coast of North America with winds blowing from the northeast.A storm along the east coast of North American with winds blowing toward the northeast.A hurricane originating in the Arctic.A New England blizzard.
A storm along the east coast of North America with winds blowing from the northeast.
People from the east coast of North America are really familiar with these doozies. They can occur any time during the year, and they bring very heavy precipitation in the form of rain or snow.
The troposphere is the lowest, and the exosphere is the highest!
When a funnel cloud has been spotted.When conditions are favorable for storms capable of producing tornadoes.When a tornado has touched the ground.When storms have formed that are capable of producing tornadoes.
When conditions are favorable for storms capable of producing tornadoes.
A tornado warning means that a tornado is forming or imminent.
A sudden drop in temperature.A sudden decrease in air pressure.A collision of clouds.Lightning.
The air around lightning is very hot. This hot air expands rapidly, then as the air cools it's quickly compressed, creating the cracking sound we know as thunder.
Not only is it the lowest level of the atmosphere, but it's the place where most of our weather takes place!
The rotation of the earth.Ocean currents.Differences in atmospheric pressure.Storms.
Differences in atmospheric pressure.
Atmospheric pressure is essentially the weight of the air pressing down on the earth. Air tries to rise or sink to balance out the differences in air pressure, and that creates wind!
A transition zone where warm air replaces cold air.A transition zone where cold air replaces warm air.The conditions required for a snowstorm.A mass of cold air moving in from northeast.
A transition zone where cold air replaces warm air.
Yup, that's pretty much all there is to it. Cold fronts don't necessarily mean cold weather, though.
Category 1Category 5
A Category 1 hurricane has winds of 74-95 mph versus a Category 5 hurricane, which has winds of 130-156 mph.
A hurricane is formed in lower temperatures.A hurricane creates lower air pressure.A hurricane has faster winds.A hurricane is composed of several tropical storms.
A hurricane has faster winds.
A tropical storm is upgraded to a Category 1 hurricane when its winds reach at least 74 mph.
Hail and snow form in the clouds, while freezing rain freezes when it makes contact with the ground.