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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.
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, the Storm Prediction Center has issued 42 meso-gamma mesoscale discussions ...
A mesoscale convective system ( MCS) is a complex of thunderstorms that becomes organized on a scale larger than the individual thunderstorms but smaller than extratropical cyclones, and normally persists for several hours or more. A mesoscale convective system's overall cloud and precipitation pattern may be round or linear in shape, and ...
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.
The Weather Prediction Center serves as a center for quantitative precipitation forecasting, medium range forecasting (three to eight days), and the interpretation of numerical weather prediction computer models . The Weather Prediction Center issues storm summaries on storm systems bringing significant rainfall and snowfall to portions of the ...
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 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 ...
The SPC issued a record-setting 43 mesoscale discussions (MCD) throughout the course of the day (12 UTC December 10 to 12 UTC December 11), all of which were associated with the broader storm system: 38 of the MCDs issued were convective discussions relating to the severe thunderstorm activity, and five were non-convective discussions relating ...