GOES-16 (GOES-East) Mid-level Water Vapor (6.9 µm) images (above) displayed an isolated vortex of very dry air moving over Texas and Louisiana on 24 March 2022. Contours of RAP40 model PV1.5 Pressure — a representation of the “dynamic tropopause” — indicated that this dry feature was a Potential Vorticity (PV) anomaly,... Read More

GOES-17 (GOES-West) Upper-level Water Vapor (6.2 µm), Mid-level Water Vapor (6.9 µm) and Air Mass RGB images (above) displayed the signature of dry, ozone-rich air associated with a Potential Vorticity (PV) anomaly approaching Baja California and Southern California on 05 November 2019. The “dynamic tropopause” — taken to be the pressure of the PV1.5 surface —... Read More

* GOES-17 images shown here are preliminary and non-operational *GOES-17 Air Mass RGB images from the AOS site (above) showed the characteristic signature of a Potential Vorticity (PV) anomaly over the East Pacific Ocean on 29 January 2019. A descending tropopause brought ozone-rich air from the stratosphere down to very low altitudes... Read More

AWIPS images of GOES-13 0.63 µm visible channel data (above; click image to play animation) showed the development of pockets of thunderstorms across Iowa, eastern Nebraska, and northwestern Missouri  on 02 July 2013.  Several of these storms produced hail up to 1 inch... Read More