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Description

Date: 2017-06-28 23:00 UTC
Volcan:Ulawun
Area: Papua New Guinea
Source: Himawari-8
Aviation colour code:  orange
Summit elevation:  2334m
Eruption Details: va last obs to fl090 mov w at 28/0430z.obs va dtg: 28/2345z

nuage de cendres volcaniques Papua New Guinea - Ulawun   mercredi 28.06.2017 23:00 UTC

Remarks: va not discernible in cloud-free satellite imagery. no other sources indicate an ongoing eruption. advisory terminated. winds from access/us model guidance.

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.