VONA message

Reykjanes

Time: 10. Nov 2023, 17:09 GMT

Color code:  Orange 

Volcano id: 371020

Activity summary:
An intense seismic swarm commenced today and it increased further since 15.00 UTC. The activity is characterized by multiple earthquakes and indication of tremor. The area which is experiencing this activity is Sundhnjúkagigar (NE of Mt Þorbjörn) (63° 53.249'N, 22° 22.883'W). The aviation color code is changed to orange as the likelihood for an eruption has increased.

Cloud height:
No eruption ongoing.

Other cloud information:
No eruption ongoing.

Remarks:
In case the current intrusion will evolve further and magma will start propagating towards the surface in this area, the most likely outcome would be an effusive eruption. However, the presence of shallow ground-water in the vicinity of the ongoing magmatic accumulation, might trigger some short-lived explosions whenever magma will encounter these reservoirs. In case an eruptive fissure will form beneath the ground water level, the production of small amount of tephra injected at an altitude of few km might occur in the initial phase of the eruption. In case of lava flowing over water ponds small explosions might be triggered affecting the very local surrounding area (few hundreds meters). More information on background activity, eruptive scenarios and volcanic hazards is available at icelandicvolcanoes.is/?volcano=REY.