Events
A storm which contains large amounts of snow or blowing snow, winds in excess of 35 mph & visibility of less than 1/4 mile for at least a 3 hour period of time
What is a blizzard?
Greatest distance that is possible for a person to see with their eyes
Not a measurement/distance
What is visibility?
Layer of gases & tiny particles that surround a planet
What is atmosphere?
Weather instrument that measures the wind speed
What is an anemometer?
Less serious than warning, can cause significant inconvenience & if caution is not exercised, could lead to situations that may threaten life/property; issued when hazardous weather is likely.
What is an "advisory"?
Storm produced by a cumulonimbus cloud & always has lightning & thunder; rain, hail and high winds may occur
What is a thunderstorm?
Vertical distance of an object/location above sea level
What is elevation?
A cloud on the ground that reduces visibility
What is fog?
Instrument that measures air pressure
What is a barometer?
Used when the risk of hazardous weather has increased significantly, but its occurrence, location or timing is still uncertain; is intended to provide time so those who need to set plans in motion can do so
What is a 'watch"?
An intense storm with swirling winds up to 150 mph; usually 300 miles across, 1,000-5,000 times larger than tornadoes
What is a hurricane?
A giant spark of electricity in the atmosphere between clouds, the air, or the ground
What is lightning?
Force exerted by the weight of the atmosphere in a specific area; the weight of air pressing down on earth
What is atmospheric pressure/air pressure/barometric pressure?
Instrument that measures the direction from which the wind is blowing
What is a wind vane?
Issued when hazardous weather is occurring; means weather conditions pose a threat to life/property; people in the path of the storm need to take protective action
What is a "warning"?
Begins as a funnel cloud with spinning columns of air that drop down from a severe thunderstorm
What is a tornado?
Disasters that are brought about by tectonic and seismic activity below the Earth's surface
What are geophysical events?
The movement of air relative to the surface of the earth; considered severe if 58 mph or greater
What is wind?
Instrument that measures temperature
What is a thermometer?
The study of the atmosphere & all its phenomena, including weather and how to forecast it
What is meteorology?
A storm that moves up the east coast & is famous for producing rain, snow, sleet & strong northeasterly winds
What is a nor'easter?
Environmental phenomenon that have the potential to impact societies & the environment, especially when the usual measures taken to prevent damage were not taken or are not able to prevent their emergence; all types of severe weather, which have the potential to pose a significant threat to human health, safety, property, & critical infrastructure
What are natural disasters?
Visible collection of tiny water droplets or, at colder temperatures, ice crystals floating in the air above the surface
What is a cloud?
Instrument used to measure the amount of rain that has fallen
What is a rain gauge?
The condition of the air at a particular time & place
What is weather?