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Issue time:

Colour code

SFC/Flight Level 300


Datum: 2017-01-17 14:00 UTC
Area: Aleutian Islands
Source: Himawari/goes
Aviation colour code: 
Summit elevation:  492 ft [150 m]
Eruption Details: va assoc with 22/2309z eruption.

Oblak sopečného popele Aleutian Islands - Bogoslof   úterý 17.01.2017 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.