What is Hail?
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
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A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...