02/19/2025
AVO flew over the summit crater of Mount Spurr on February 7 and used a forward-looking infrared (FLIR) camera to measure the temperature of the steam and gas vents (fumaroles) at the summit, with the highest temperatures exceeding 320 degrees F (160 degrees C, top image).
A regular photo from the same perspective (bottom) shows the blue crater lake with ice floating on it. Compared to an overflight in December, the lake surface level has gone down, revealing more of these fumaroles where heat and gases are escaping the volcano.
Spurr is currently at alert level ADVISORY/WATCH due to earthquakes, ground deformation, and melting of ice in the summit crater of Mount Spurr. AVO is closely monitoring the volcano for changes that could indicate a more imminent eruption.
USGS Volcanoes UAF Geophysical Institute Alaska DGGS