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Issue time:

Colour code


Date: 2011-08-21 20:00 UTC
Volcano:San Cristobal
Area: Nicaragua
Source: Goes-13. Gfs Winds.
Aviation colour code: 
Summit elevation:  5725 ft [1745 m]
Eruption Details: no va observed in stlt imagery.obs va dtg: 21/1945z

Volcano ash cloud Nicaragua - San Cristobal   Monday 22 Aug 2011 14:00 UTC

Remarks: no va observed in stlt imagery. ...salemi

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.