Here is a 1 hour loop (1-minute increments) of strong convection over NV. The top image is Octane Speed with DMW overlayed. The bottom image is MRMS 0.5 km MSL Composite Refl. Notice an intense updraft develop in the center of the screen. The blue indicates lower winds while green/yellow are higher. Winds get as low as 2 kt in the anvil, while just downstream of it they are 30-40 kt!!! The DMW confirm this as they are generally within 5 kt of the Octane speed. Shortly after this happens, reflectivities rapidly increase.