I noticed at the USGS LANDSAT-8 had captured a view of Shishaldin volcano, so I thought I would take a look at the data. It was clear conditions so maybe there is sometime at the summit.
Panchromatic band from LANDSAT-8, 15 m spatial resolution.
LANDSAT-8 band 8 displayed within Google Earth
SWIR band from LANDSAT-8, 30 m spatial resolution.
SWIR band from LANDSAT-8 in Google Earth, here I have changed the scale of the signal. This has been converted to TOA radiance. So next I zoomed in on the summit of Shishaldin
Zoomed in on Google Earth - Pano Band 8
Zoomed in on Google Earth - SWIR Band 7.
This has a radiance in the SWIR of > 20 W/m2*strad*μm
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