Potential Vorticity anomaly approaching Baja California and Southern California
![GOES-17 Upper-level Water Vapor (6.2 µm), Mid-level Water Vapor (6.9 µm) and Air Mass RGB images, with and without contours of PV1.5 pressure [click to play animation |MP4]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2019/11/baja_rgb-20191105_200119.png)
GOES-17 Upper-level Water Vapor (6.2 µm), Mid-level Water Vapor (6.9 µm) and Air Mass RGB images, with and without contours of PV1.5 pressure [click to play animation |MP4]
A GOES-17 Water Vapor image with plots of available NOAA-20 NUCAPS soundings (below) is labeled with sounding points within the core of the PV anomaly (Point 1) and within the core of the driest air (Point 2).
The NUCAPS sounding profiles for Point 1 and Point 2 are shown below. The middle/upper troposphere was quite dry at both locations.