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Issue time:

Colour code


Date: 1969-12-31 23:00 UTC
Volcano:San Cristobal
Area: Nicaragua
Source: Goes-13.
Aviation colour code: 
Summit elevation:  5725 ft [1745
Eruption Details:

Volcano ash cloud Nicaragua - San Cristobal   Thursday 01 Jan 1970 17:00 UTC

Remarks: no va is detected in stlt imagery. ...turk

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.