Here is an event from Stromboli volcano. This was seen on 5 separate cameras. Four of these cameras update every 3 minutes and so these captures were very fortunate to detect the eruptive event. Another camera, is able to update every 4 seconds and you can see from this animation that the event itself was from 23:50:56 UTC, 4 seconds before the images at 23:51 UTC. So again, a minute either side or even 30 seconds either side and the other four would have missed it.
Video footage with the FLIR camera every 4 seconds animated. The other four cameras are included as still images.
FLIR at 23:50:56 UTC
INGV SPT FLIR at 23:51:00 UTC
INGV SPV at 23:51:00 UTC
INGV SQT FLIR at 23:51:00 UTC
INGV SQV at 23:51:00 UTC
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