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Issue time:

Colour code

SFC/Flight Level 100


Date: 2017-01-18 20:00 UTC
Area: Papua New Guinea
Source: Hw8
Aviation colour code:  orange
Summit elevation:  1855m
Eruption Details: continuous va emmissions to fl100obs va dtg: 18/2020z

Volcano ash cloud Papua New Guinea - Bagana   Wednesday 18 Jan 2017 20:00 UTC

Remarks: t+0 confidence high. va clearly obs on vis sat imagery extending to se.

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.