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Issue time:

Colour code

SFC/Flight Level 100


Date: 2017-06-04 10:00 UTC
Area: Indonesia
Source: Cvghm
Aviation colour code:  orange
Summit elevation:  2891m
Eruption Details: cvghm report eruption to fl100 mov to e at 04/0924z

Volcano ash cloud Indonesia - Marapi   Sunday 04 Jun 2017 10:00 UTC

Remarks: cvghm report eruption to 250m above summit. va not identifiable on satellite imagery due to met cloud. va height and movement based on grnd report and model guidance.

This data supplements the official Volcanic Ash Advisory Graphics and Volcanic Ash Advisories. The data is to be used with caution. The official Volcanic Ash Graphics and Volcanic Ash Advisories take precedence in all circumstances. Please refer to national NOTAMs for definitive boundaries of no-fly areas.

Altitiude levels (International Standard Atmosphere)

SFC to FL200 - Ash concentrations between the surface and 20,000 feet.
FL200 to FL350 - Ash concentrations between 20,000 feet and 35,000 feet.
FL350 to FL550 - Ash concentrations between 35,000 feet and 55,000 feet.
SFC to 6000FT - Ash concentrations between the surface and 6,000 feet.