Halemaumau crater as seen from ASTER and webcams, May 5 2015.

This is an analysis of ASTER satellite data from 21:04 UTC on May 5, 2015 using the Google Maps Engine and Google Earth Engine and the closest in time webcam images. Below is the Google Earth Engine base map, zoomed in on the Halemaumau crater. The second image is an RGB of the visible and near infrared data. Notice the incandescence seen in this data from the crater edge. The TIR image over the same region shows the thermally active portion of the crater, and this has saturated the data at > 373 K for the 90 by 90 m pixel.

Google Earth Engine map around the Halemaumau crater

ASTER RGB of Channels 3 N, 2 and 1 at Halemaumau crater, May 5 2015 at 21:04 UTC [15 m data]

ASTER TIR data at Halemaumau crater, May 5 2015 at 21:04 UTC [90 m data]

The HVO webcam views of the crater at around 21:00 UTC, 4 mins before the overpass.

Thanks to ASTER Urgenct Request Protocol (URP) program for access to the satellite data (https://astereds.cr.usgs.gov/eds_archive.php) and to the USGS HVO for the webcam imagery (http://hvo.wr.usgs.gov/cams/)