GOES-16 (GOES-East) True Color RGB images created using Geo2Grid (above) showed (1) Kármán vortex streets extending downwind (to the north) of Isla Alejandro Selkirk and Robinson Crusoe — part of the Juan Fernández Islands off the coast of Chile, and (2) an actinoform cloud feature farther to the west (which was also moving northward) on... Read More

CIMSS scientists have been working on an update (and improvement) on Geo2Grid software (v 1.1) that can be expected within a couple months. (Beta-testing is ongoing at CIMSS) The animation above shows the Airmass RGB from Himawari-8 (data courtesy JMA) and the Fujiwhara interaction (also discussed on the CIMSS blog here)... Read More

GOES-16 (GOES-East) Day Snow-Fog RGB and Nighttime Microphysics RGB images (above) showed a narrow band of clouds along the leading edge of an arctic cold front that was moving southeastward across North Dakota and Minnesota late in the day on 10 March 2022. Strong winds combined with snowfall from this narrow band produced snow squall... Read More

GOES-17 (GOES-West) Mid-level Water Vapor (6.9 µm) and Air Mass RGB images — with and without contours of RAP40 model PV1.5 pressure — (above) displayed a shear vortex moving southeastward toward the coast of California on 09 March 2022. These vortices frequently perturb the local “dynamic tropopause” (represented by the PV1.5 pressure), drawing it down... Read More