Uploaded November 2023 | Updated September 2026, 3 weeks ago
These are early computer simulations of merging severe thunderstorms in Central Oklahoma on May 20, 1977, produced using supercomputer modeling of numerical data sets from the National Center for Atmospheric Research (NCAR), National Severe Storms Laboratory (NSSL), and the University of Illinois Urbana-Champaign Atmospheric Science Department.
The simulations were in part pulled from datasets gathered during the extremely active "seven days in May" of 1977 across Oklahoma and Texas.
Preserved from an aging 3/4" videotape copy direct from the computer output at NCAR.
Source: Dr. Louis Wicker, NSSL.
These are early computer simulations of merging severe thunderstorms in Central Oklahoma on May 20, 1977, produced using supercomputer modeling of numerical data sets from the National Center for Atmospheric Research (NCAR), National Severe Storms Laboratory (NSSL), and the University of Illinois Urbana-Champaign Atmospheric Science Department.
The simulations were in part pulled from datasets gathered during the extremely active "seven days in May" of 1977 across Oklahoma and Texas.
Preserved from an aging 3/4" videotape copy direct from the computer output at NCAR.
Source: Dr. Louis Wicker, NSSL.
