Las Vegas: 7 July 1999
Tropical connection evident on the Water Vapor Imagery
Very moist low levels as seen at the surface and 850 mb
Moist low-level flow is channeled up the Colorado River Valley in to southern Nevada
- Convergence zone in Las Vegas Valley focuses initial convection
- Later focus on topographic features to north
Efficient precipitation growth with moist environment and weak to moderate updrafts & wind shear