Steering Level For Cyclones
guided by winds near 700 mb

Surface systems often follow the prevailing airflow at this level. Therefore, the airflow at 700mb, inferred from the geopotential contours and geostrophic balance, can indicate the direction surface systems will take.

Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.