Following several days of unrest, there was a moderate eruption of Volcán de Fuego in Guatemala beginning around 0630 UTC on 19 November 2018. GOES-16 (GOES-East) Upper-level (6.2 µm), Mid-level (6.9 µm) and Low-level (7.3 µm) Water Vapor images (above) displayed a signature of the volcanic plume, which drifted slowly northward and eastward for several hours. Since... Read More

Suomi NPP VIIRS Visible (0.64 µm) and Infrared Window (11.45 µm) images (above) captured an unusually late thunderstorm that produced small hail at Anchorage PANC (surface observations) on 24 September 2018. The coldest cloud-top infrared brightness temperature was -53.8ºC, which was colder than the -46.3ºC tropopause temperature on the 00 UTC Anchorage sounding. This... Read More

GOES-16 (GOES-East) False Color Red-Green-Blue (RGB) images from the NOAA/CIMSS Volcanic Cloud Monitoring site (above) showed another eruption of the Sierra Negra volcano on the Galapagos, which began late in the day on 01 July 2018. Since the volcanic plume was rich in SO2, it exhibited a cyan appearance in the RGB imagery.As... Read More

Onset of the #SierraNegra #eruption (#Galapagos) in the afternoon of June 26 captured by GOES & other satellites. The previous two Sierra Negra eruptions (1979 & 2005) both emitted a lot of SO2. Source: @NOAA/@UWCIMSS volcanic cloud monitoring system; https://t.co/OZWmWBOVs9 pic.twitter.com/Gg3Yqw6pp3 — Simon Carn (@simoncarn) June 27, 2018 GOES-16 (GOES-East) “Clean”... Read More