This short video shows thermal camera footage of the onset of the #MaunaLoa eruption from the volcano's summit. The temperature in degrees C is shown by the colored scale bar on the right. For additional information visit: usgs.gov/volcanoes/maun… #MaunaLoaErupts
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@USGSVolcanoes Were there signs that this was coming or was it a complete surprise?
@totallynotlisa Activity has definitely been elevated for months - enough that HVO started holding community meetings in potentially impacted areas to ensure that residents knew the hazards and what to expect. Onsets are always very rapid at Mauna Loa, but the slow buildup was recognized.