Issue time:

Colour code


Date: 2015-08-04 00:00 UTC
Area: Indonesia
Source: Waaf Sigmet, Himawari-8
Aviation colour code:  orange
Summit elevation:  1715m
Eruption Details: va last obs at 03/2320z to fl070 12nm to ne

Volcano ash cloud Indonesia - Gamalama   Tuesday 04 Aug 2015 00:00 UTC

Remarks: local observation of va at 03/2300z. height based on sigmetand model winds. va obs on himawari-8 03/2320z visimage extending 12nm to ne, however appears to have dissipated on

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.