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nuage de cendres volcaniques Chile - Villarica   mardi 03.03.2015 12:00 UTC

Remarks: stlt imagery showed an explosive eruption of ash to fl300 at 0638z. vacld now is moving ese away from summit. emission activity has decreasedonly weak emission of steam and gases and possible lgt ash. however a

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.