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Issue time:

Colour code


Date: 2017-01-17 14:00 UTC
Area: Japan
Source: Himawari-8
Aviation colour code:  nil
Summit elevation:  796m
Eruption Details: va dissipated on satellite imageryobs va dtg: 02/1730z

Volcano ash cloud Japan - Suwanosejima   Tuesday 17 Jan 2017 14:00 UTC

Remarks: the 557th weather wing is issuing this message on behalf of thewashington vaac. 557 ww and the washington vaac are conducting acoordinated operational backup test from 17/1400z - 17/2000z. please be

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.