Potential “neutercane” in the Southeast Pacific Ocean

January 12th, 2022 |

GOES-16 True Color RGB images [click to play animated GIF | MP4]

GOES-16 (GOES-East) True Color RGB images created using Geo2Grid (above) displayed the eye-like signature of a potential subtropical cyclone or “neutercane” over the Southeast Pacific Ocean on 12 January 2022. This type of mesoscale “hybrid” system has been observed near decaying cold fronts, or (as in this case) near the centers of aged occluded extratropical cyclones.

VIIRS Infrared Window (11.45 µm) images from NOAA-20 and Suomi-NPP as viewed using RealEarth (below) showed that deep convection — exhibiting cloud-top brightness temperatures of -40°C and colder, shades of green) — existed around the immediate edge of of the small eye.

VIIRS Infrared Window (11.45 µm) images from NOAA-20 and Suomi-NPP [click to enlarge]

Surface analyses from the Chile Navy Weather Service (below) depicted the small occluded cyclone as it was moving southeastward off the coast of Chile.

Surface analysis at 12 UTC and 18 UTC [click to enlarge]