Hysplit Trajectories

These trajectories were calculated using the NOAA HYSPLIT model.

More information can be found here: http://ready.arl.noaa.gov/HYSPLIT.php

For information regarding the monitoring of radioactive material reaching the United States, please visit the EPA: http://epa.gov/japan2011

            Today's trajectory

      Today's Plume Dispersion Model


            Tomorrow's trajectory

   Tomorrow's Plume Dispersion Model

            Trajectory in 2 days

   Plume Dispersion Model in 2 days

Daily Trajectory Figures
04/04 04/05 04/06 04/07 04/08 04/09 04/10
04/11 04/12 04/13 04/14 04/15 04/16 04/17
04/18 04/19 04/20 04/21 04/22 04/23 04/24
Daily Plume Dispersion Animations
04/04 04/05 04/06 04/07 04/08 04/09 04/10
04/11 04/12 04/13 04/14 04/15 04/16 04/17
04/18 04/19 04/20 04/21 04/22 04/23 04/24

For more information please contact:

Dr. Tim Canty

Dr. Jeff Stehr

Dr. Ross Salawitch

Dr. Russ Dickerson

Dr. Markus Rex


Phone: 301-405-5360

Phone: 301-405-7638

Phone: 301-405-5396

Phone: 301-405-5364

Phone: +49 174 311 80 70

Disclaimer:  The figures on this webpage illustrate air parcel  trajectories found using the publicly accessible NOAA HYSPLIT model. The movement of hazardous material through the atmosphere is subject  to many uncertainties, most of which are not considered here. These  products are intended solely for educational purposes. Neither the University of Maryland nor the people generating these products accepts responsibility for any action taken based on information on this webpage. We do appreciate feedback and comments.