Tropical storm Juliette was observed by the NOAA WP3-43 research aircraft on September 21, 2001 in the east Pacific. In the following days it spun up to became a category 4 hurricane. As such, it posed a significant threat to the Mexican west coast.

In this work, we document the characteristics of the vertical profiles of divergence and circulation observed during the tropical storm phase of hurricane Juliette. The winds were synthesized from radial velocities taken by the x-band Doppler radar mounted on board the WP3-43.