Summary of Daily Weather Date Being Summarized: 19 April 1995 The vigorous short wave trough started out in AZ at 12Z and moved rapidly across NM and into western TX by 00Z. This brought strong wind fields in the mid and upper troposphere across the moisture and instability in central and north TX. The moisture return began early in the morning, as the southerly low-level jet strengthened overnight. In central and north TX, the presence of a surface- based cool pool meant the moisture was overriding this cool surface air. During the day, this cool air was very slow to move back northward in spite of the ad- vancing system. As the trough moved into the area, its structure was rather complex, with new convection developing well ahead of the major system over the cool pool at the surface. To the west, as the trough approached, the cold front began to overtake the dry line, with considerable blowing dust in the cold air. As the cold front/dry line approached from the west, the zone of surface-based deep moisture was caught between the advancing features to the west and the cool pool to the east, resulting in a gradually narrowing band of deep surface-based moisture. A narrow tongue of high lapse rates was being carried into north TX from the southwest out of old Mexico. Convection was widespread, developing first as elevated storms over the cool pool at the surface, then along the western boundary of the cool air over the high plains of west TX, then along the dry line. A number of relatively isolated supercells were seen and as the major trough moved out, a squall line developed along it. Numerous tornadoes were reported in north TX, including some in the Dallas/Fort Worth metroplex with both the early, elevated storms and with the later developments as the system advanced. There are 27 tornadoes reported in the rough SELS log, including some scattered hither and yon outside the VORTEX ops area. Apparently, none were especially damaging, long-tracked, or intense. As the fast-moving storms moved into the relatively stable air north of the cool pool boundary, most of them lost their supercell character, although a major cell that crossed the Red River late in the day seemed not to mind overriding the cool air. A very interesting, if frustrating event day, in general. Doswell