GOES-16 (GOES-East) Day Snow-Fog RGB images (above) displayed widespread streamers of blowing snow (pale shades of white) across much of North Dakota and far northwestern Minnesota on 18 January 2022. Blowing snow was lofted from the surface by elongated horizontal convective rolls that developed in the wake of a strong cold frontal passage —... Read More
A large amount of Saharan Dust has been blowing off of the African continent for the past several days. The dust is moving to higher latitudes reaching as far north as southern Ireland. These strong dust events heavily affect air quality in the Canary Islands and a yellow alert is... Read More
JMA Himawari-8 True Color RGB images created using Geo2Grid (above) showed the rapid expansion of a volcanic cloud following an explosive eruption of Hunga Tonga–Hunga Ha`apai on 15 January 2022. An abrupt shock wave was also evident, which propagated radially outward in all directions.The volcanic cloud also exhibited a striking appearance in... Read More
GOES-17 imagery revealed another explosive eruption of Hunga Tonga-Hunga Ha?apai in the south Pacific Ocean between 1500 and 1530 UTC on 13 January 2022; an eruption in December 2021 is discussed here. The brightness temperatures in this volcanic plume cooled from -9.4o to -66.7o between 1520 and 1530 UTC. This 1308 UTC NUCAPS profile from... Read More
