Relier Pairs topic 7 weather part 4 prediction and probabilityVersion en ligne match the term to the defintion par Susan Brown 1 violent or severe disturbance of the atmosphere that usually creates dangerous, destructive or unpleasant conditions on Earth's surface 2 movement of air masses along the polar fronts result in the formation of low pressure storms associated with thunderstorms, tornados and ahil 3 storm with winds of at lease 35 mph with lots of falling or blowing snow 4 large summer and fall storms that form over tropical waters with sustained winds of at least 74 miles per hour 5 heavy rainstorms accompanied by thunder and lightening 6 most violent of all storms; small area of impact for a relatively short time; rotating, very low pressure funnel that hangs from the clouds cyclonic storms thunderstorms blizzard tornado storm hurricane 1 as air temperature gets closer to the dew point 2 symbol that represents a site's weather variables for a specific time of day 3 as temperature increases 4 greater the air pressure gradient 5 rapidly falling air pressure indicates 6 chance 7 reflects electromagnetic waves to give information about precipitation and clouds 8 visual and infrared images from space that show location and size of storms higher the wind speeds satellite images radar probability air pressure decreases chance of precipitation increases storm approaching station model 1 2 3 4 5 southwest wind, mostly cloudy northwest wind, completely cloudy southeast wind with a barometric pressure of 1000.2 northeast wind between 20-25 mph southeast wind between 15 and 20 mph; mostly cloudy