Issue time:

Colour code


Date: 2014-12-21 05:00 UTC
Area: Indonesia
Source: Mtsat, Modis, Ground Reports
Aviation colour code:  orange
Summit elevation:  1715m
Eruption Details: va obs to fl090 at 21/0432z extending 15nm to e

Volcano ash cloud Indonesia - Gamalama   Sunday 21 Dec 2014 23:00 UTC

Remarks: ash height and movement based on 21/0000z menado sounding,mtsat vis image and model winds. **use text product for flightplanning**

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.