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This is a list of meso-gamma mesoscale discussions, which are issued by the National Oceanic and Atmospheric Administration’s Storm Prediction Center during high-confidence and high-impact severe weather events.
Meso-gamma mesoscale discussion See also: List of Storm Prediction Center meso-gamma mesoscale discussions SPC mesoscale discussions for a high-impact and high-confidence strong tornadoes (EF2+) or winds greater than 100 miles per hour (160 km/h) are called meso-gamma mesoscale discussions. Meso-gamma mesoscale discussions are rarely issued by the SPC. As of May 2024 [update], the Storm ...
While the violent EF4 tornado was on the ground, Harry Weinman, a forecaster at the SPC, issued a special meso-gamma mesoscale discussion for the tornado. In the discussion, the SPC stated that radar showed debris was being lofted at least 13,000 feet (4,000 m) into the air and that a vertical rotation of 70 knots (81 mph; 130 km/h) was also ...
The Storm Prediction Center issued a mesoscale discussion stating that a tornado with winds of 170–205 mph (274–330 km/h) was likely ongoing, and that it was an 'exceptionally rare event'. The tornado then narrowed to 1.7 miles (2.7 km), but continued to produce EF3 damage as it crossed US 49 to the north-northwest of Seminary. Numerous ...
A mesoscale discussion may refer to: Mesoscale convective discussion, a forecast concerning thunderstorms issued by the Storm Prediction Center (SPC) Mesoscale precipitation discussion, a forecast concerning precipitation issued by the Weather Prediction Center (WPC) Category: Disambiguation pages.
Mesoscale meteorology. Mesoscale meteorology is the study of weather systems and processes at scales smaller than synoptic-scale systems but larger than microscale and storm-scale. Horizontal dimensions generally range from around 5 kilometres (3 mi) to several hundred kilometers. Examples of mesoscale weather systems are sea breezes, squall ...
A mesoscale convective complex (MCC) is a unique kind of mesoscale convective system which is defined by characteristics observed in infrared satellite imagery. Their area of cold cloud tops exceeds 100,000 square kilometres (39,000 sq mi) with temperature less than or equal to −32 °C (−26 °F); and an area of cloud top of 50,000 square ...
A mesocyclone is a meso-gamma mesoscale (or storm scale) region of rotation ( vortex ), typically around 2 to 6 mi (3.2 to 9.7 km) in diameter, most often noticed on radar within thunderstorms. In the northern hemisphere it is usually located in the right rear flank (back edge with respect to direction of movement) of a supercell, or often on ...