Project Vortex-99. An occluded mesocyclone tornado rated an F3 by an NWS damagesurvey. Occluded means old circulation on a storm; this tornado was formingwhile the new circulation was beginning to form the tornadoes which preceededthe F5 Oklahoma C
10/22/2018 11:50:25 AM
Date: 3-May-99
Credit: OAR/ERL/National Severe Storms Laboratory (NSSL)
Location: Oklahoma, 10 mi. south of Anadarko
Subject: Tornadoes