Acid Rain contains high levels of chemical contaminants that are released into the atmosphere. This type of rain is harmful to the environment.
A Tsunami is a large destructive wave that starts because of an earthquake, landslide, or volcanic eruption on the ocean’s floor.
Heat Lightning is lightning that is seen but no heard. This occurs when a Thunderstorm is too far away for the thunder to be heard.
Hail refers to pellets (or balls) of ice larger than 5mm wide. Hail typically falls when Thunderstorm conditions are present.
Wind Chill is a temperature reading that factors in how wind speed effects what the temperature feels like.
Blizzard conditions exist when a snow storm contains high winds (greater than 35 mph), large amounts of snowfall or blowing snow, and very cold temperatures.
A Wind Gust is the term for an increase in wind speed of more than 10 knots (11.5 mph).
A Gale is a term used for surface wind that sustains speeds of 39 to 54mph.
A Front is the boundary between two air masses with different temperatures (or densities).
El Niño occurs when the ocean current off the coast of Ecuador and Peru warms, causing dramatic changes in weather patterns. El Niño is a fairly common occurrance – typically every 3 to 7 years.