980709 - Another DCVZ mission was conducted today.  Radar data from early
afternoon indicated a reflectivity gradient associated with the boundary
although velocities were generally less than 10 knots on either side.  The
two MM vehicles completed an eastbound transect along CO52 between I25 and
I76 and found only weak convergence and a diffuse boundary.  Winds were NW
to NE on the west side of the boundary and E on the east side.  A reverse
transect showed little change.  A slight enhancement of the NW flow began
during the mid-afternoon and some convective growth was noted on the
convergence line.  The mobile mesonets completed two box patterns of the
convergence line along CO52 and CO7 on the north and south, and I76 and I25
on the east and west.  A sharp convergence zone was noted on both of these
passes and convection quickly grew into cumulonimbus.  Operations were
terminated after the second box pattern since the area was quickly becoming
dominated by multiple outflows from widespread convection.