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Aviation code for Bárðarbunga back to orange, Askja caldera still on yellow 1416

13. mar 2023 20:04

The Icelandic Met Office has changed the Aviation Colour Code for Bárðarbunga area to ‘orange', signifying that significant emission of ash into the atmosphere is unlikely. The aviation colour-code for the Askja volcano remains at ‘yellow'. This in accordance with recommended International Civil Aviation Organisation (ICAO) procedures. 

The safety restricted flight area around Holuhraun lava field fissure, set by the Icelandic Transport Authority, has been cancelled. No flight restrictions are in effect as a result of the volcanic eruption. 

This is how IMO's scientists explain the colour codes
Colour codes are intended to inform the aviation sector about a volcano's status. Notifications are issued for both increasing and decreasing volcanic activity, and are accompanied by text with details (as known) about the nature of the unrest or eruption, especially in regard to ash-plume information and likely outcomes.

GREY
Volcano appears quiet but is not monitored adequately. Absence of unrest unconfirmed.

GREEN
Volcano is in typical background, non-eruptive state.

YELLOW
Volcano is exhibiting signs of elevated unrest above known background level.

ORANGE
Volcano shows heightened or escalating unrest with increased potential of eruption.

RED
Eruption is imminent or in progress – significant emission of ash into atmosphere likely.

 

The Icelandic Met Office has changed the Aviation Colour Code for Bárðarbunga area to ‘orange', signifying that significant emission of ash into the atmosphere is unlikely. The aviation colour-code for the Askja volcano remains at ‘yellow'. This in accordance with recommended International Civil Aviation Organisation (ICAO) procedures. 

The safety restricted flight area around Holuhraun lava field fissure, set by the Icelandic Transport Authority, has been cancelled. No flight restrictions are in effect as a result of the volcanic eruption. 

This is how IMO's scientists explain the colour codes
Colour codes are intended to inform the aviation sector about a volcano's status. Notifications are issued for both increasing and decreasing volcanic activity, and are accompanied by text with details (as known) about the nature of the unrest or eruption, especially in regard to ash-plume information and likely outcomes.

GREY
Volcano appears quiet but is not monitored adequately. Absence of unrest unconfirmed.

GREEN
Volcano is in typical background, non-eruptive state.

YELLOW
Volcano is exhibiting signs of elevated unrest above known background level.

ORANGE
Volcano shows heightened or escalating unrest with increased potential of eruption.

RED
Eruption is imminent or in progress – significant emission of ash into atmosphere likely.