Any disturbed state of the atmosphere, especially affecting the Earth's surface, and strongly implying destructive and otherwise unpleasant weather. Storms range in scale from tornadoes and thunderstorms to tropical cyclones to synoptic-scale extratropical cyclones.
The Storm Prediction Center (SPC) is a government agency that is part of the National Centers for Environmental Prediction (NCEP), operating under the control of the National Weather Service (NWS), which in turn is part of the National Oceanic and Atmospheric Administration (NOAA) of the United States Department of Commerce (DoC). Headquartered at the National [...]
Helicity measured relative to a moving thunderstorm.
Similar to base velocity, storm relative velocity takes the movement of the storm into account when calculating the average velocity of everything in the NEXRAD weather radar beam.
A storm shelter is a type of bunker designed to protect the occupants from violent severe weather, particularly tornadoes. A storm shelter may be underground or an above ground reinforced safe room.