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Issue time:

Colour code


Date: 2011-12-14 08:00 UTC
Area: Halmahera Indonesia
Source: Waaa Sigmet; Ujung Pandang Mwo
Aviation colour code:  orange
Summit elevation:  1715m
Eruption Details: va plume obs to fl100 to 75nm to s at 13/2100z.

Volcano ash cloud Halmahera Indonesia - Gamalama   Wednesday 14 Dec 2011 08:00 UTC

Remarks: ujung pandang mwo report va plume to fl100 extending 75nm tos. va not identifiable on sat imagery due to meteorological cloud.

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.