|  | P7.2 | A simple model for convection initiation between two colliding frontal boundaries
Zhe-Min Tan, Nanjing University, Nanjing, Jiangsu, China; and F. Zhang |
| | P7.3 | Rapid supercell storm and tornado development along a boundary
Kevin B. Laws, University of Alabama, Huntsville, AL; and K. R. Knupp and J. Walters |
| | P7.4 | The 3 May 1999 Drylines: A Closer Examination 
Albert E. Pietrycha, Penn State University, University Park, PA |