Issue time:

Colour code


Date: 2014-12-22 23:00 UTC
Area: Indonesia
Source: Mtsat, Ground Reports
Aviation colour code:  orange
Summit elevation:  1715m
Eruption Details: va last obs to fl090 at 22/2232z extending 20nmto sw

Volcano ash cloud Indonesia - Gamalama   Monday 22 Dec 2014 23:00 UTC

Remarks: polygons refined based on latest visible imagery andmodel winds. **use text product for flight planning**

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.