Forecast Trajectory Maps for Alaskan Volcanoes
NOTE: this web server is not maintained in an "operational" environment and should not be relied upon for 24/7 access.
NOTE: these trajectories are run on a regular schedule whether or not there is an eruption
Time help (UTC=GMT; local)
Updated on Sat May 25 05:16:00 GMT 2013
txt - Trajectory endpoints format help
Forecast trajectories for Alaska are summarized above. The 6-h duration forward trajectories begin at the specified number of hours after the start of the meteorological model initialization. The trajectories are computed using meteorological fields output from the NOAA National Centers for Environmental Prediction (NCEP) North American Meso (NAM) and the Global Forecast System (GFS) forecast models. Details on the NAM and GFS gridded data used in these calculations are available on the meteorological forecast data web page. Trajectories starting at different heights are shown in different colors. The trajectory endpoints are plotted on maps (gif) and displayed in text files (txt).
*Note that the NAM and GFS trajectories are updated separately because the NAM and GFS models are run at different times at NCEP.
Related LinksAnchorage Volcanic Ash Advisory Center (VAAC)
Alaska Volcano Observatory (AVO)
HYSPLIT for current eruptions
HYSPLIT for hypothetical eruptions
Run HYSPLIT for any volcano.
Inquiries should be addressed to: