The Calbuco volcano in southern Chile erupted around 2103 UTC or 6:03 pm local time on 22 April 2015. The first good satellite view of the volcanic cloud was provided by the 2138 UTC or 6:38 pm local time GOES-13 (GOES-East) 0.63 µm visible channel and 10.7 µm IR channel... Read More
GOES-15 (GOES-West) 6.5 µm “water vapor channel” images (above; click image to play animation; also available as an MP4 movie file) revealed an interesting transition in the signal displayed by the 2 summits (Mauna Kea and Mauna Loa) on the... Read More
Infrared imagery from Himawari-8 has a nominal resolution of two km (at the sub-satellite point), but a visible channel has a nominal resolution of 0.5 km which can provide imagery with great detail. In the example above, the visible imagery captures the eruption, beginning around 2210 UTC on 25 March... Read More
During a 4-hour period on 17 March 2015, NOAA/NESDIS conducted a test of two special GOES-15 (GOES-West) Rapid Scan Operations (RSO) sectors for the Alaska Region. From 16:00 to 18:00 UTC, the test was conducted for the “Sitka” sector (above) — and GOES-15 0.63 µm visible channel images over a... Read More
