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Forecast Trajectory Maps for Alaskan Volcanoes

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Updated on Fri Aug 14 11:16:08 GMT 2009

Click on linked images in table below to view larger image.

Alaska HYSPLIT Forecast Trajectories
Volcano Trajectory start time after model initialization (hrs)
+6 +12 +18 +24
NAM GFS NAM GFS NAM GFS NAM GFS
Cleveland txt NAM HYSPLIT Trajectories beginning 6 hours after model initial time from the Cleveland Volcano txt GFS HYSPLIT Trajectories beginning 6 hours after model initial time from the Cleveland Volcano txt NAM HYSPLIT Trajectories beginning 12 hours after model initial time from the Cleveland Volcano txt GFS HYSPLIT Trajectories beginning 12 hours after model initial time from the Cleveland Volcano txt NAM HYSPLIT Trajectories beginning 18 hours after model initial time from the Cleveland Volcano txt GFS HYSPLIT Trajectories beginning 18 hours after model initial time from the Cleveland Volcano txt GFS HYSPLIT Trajectories beginning 24 hours after model initial time from the Cleveland Volcano txt
Redoubt NAM HYSPLIT Trajectories beginning 6 hours after model initial time from the Redoubt Volcano txt GFS HYSPLIT Trajectories beginning 6 hours after model initial time from the Redoubt Volcano txt NAM HYSPLIT Trajectories beginning 12 hours after model initial time from the Redoubt Volcano txt GFS HYSPLIT Trajectories beginning 12 hours after model initial time from the Redoubt Volcano txt NAM HYSPLIT Trajectories beginning 18 hours after model initial time from the Redoubt Volcano txt GFS HYSPLIT Trajectories beginning 18 hours after model initial time from the Redoubt Volcano txt NAM HYSPLIT Trajectories beginning 24 hours after model initial time from the Redoubt Volcano txt GFS HYSPLIT Trajectories beginning 24 hours after model initial time from the Redoubt Volcano txt
Shishaldin NAM HYSPLIT Trajectories beginning 6 hours after model initial time from the Shishaldin Volcano txt GFS HYSPLIT Trajectories beginning 6 hours after model initial time from the Shishaldin Volcano txt NAM HYSPLIT Trajectories beginning 12 hours after model initial time from the Shishaldin Volcano txt GFS HYSPLIT Trajectories beginning 12 hours after model initial time from the Shishaldin Volcano txt NAM HYSPLIT Trajectories beginning 18 hours after model initial time from the Shishaldin Volcano txt GFS HYSPLIT Trajectories beginning 18 hours after model initial time from the Shishaldin Volcano txt NAM HYSPLIT Trajectories beginning 24 hours after model initial time from the Shishaldin Volcano txt GFS HYSPLIT Trajectories beginning 24 hours after model initial time from the Shishaldin Volcano txt

txt - Trajectory endpoints format help

Forecast Details

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.

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Inquiries should be addressed to:

Barbara Stunder
E-mail: barbara.stunder@noaa.gov