A mesoscale convective system's overall cloud and precipitation pattern may be round or linear in shape, and include weather systems such as tropical cyclones, squall lines, lake-effect snow events, polar lows, and Mesoscale Convective Complexes ( MCCs ), and they generally form near weather fronts.
22.
Throughout the afternoon hours, in the wake of an earlier mesoscale convective system, the airmass across western and northern portions of Alabama began to quickly destabilize, with mixed layer Convective available potential energy ( CAPE ) estimated in the 2500 4000 j / kg range and low-level dewpoints of 70 72 �F surging northward from Louisiana.
23.
At Pennsylvania State University ( PSU ) he earned M . S . in meteorology in 1985 with the thesis " On the Development of Boundary Layer Rolls from the Inflection Point Instability " and in 1992 a Ph . D . with the dissertation " Southward Burst Mesoscale Convective Systems : An Observational and Modeling Study ".
24.
The resultant mesoscale convective system ( MCS ) forms at the point of the upper level split in the wind pattern at the area of the best low-level outflow boundaries exist ahead of this type of activity, " SQLN " or " SQUALL LINE ", while outflow boundaries are depicted as troughs with a label of " OUTFLOW BOUNDARY " or " OUTFLOW BNDRY ".
