| | P4A.4 | Time-dependent Burgers-Rott Vortex As Seen by a Simulated Doppler Radar Vincent T. Wood, NOAA/NSSL, Norman, OK; and R. P. Davies-Jones and R. A. Brown |
| | P4A.5 | Three hailstorms in Kanto-plane, Japan Yoshimasa Takaya, MRI, Tsukuba, Japan; and M. Mori, M. Ishibe, T. Tajiri, and T. Misaki |
| | P4A.6 | Mesocyclone occurred in different environment Junjian Zhu, Weather Office, Jinan, Shandong, China; and X. Diao |
| | P4A.7 | Paper moved to session 8a, New paper number 8a.6a Marjorie Huntington, AER, boston, MA |
| | P4A.8 | Terminal Doppler Weather Radar Observations of a Microburst Daniel J. Miller, NOAA/NWS/Weather Forecast Office, Norman OK, Norman, OK; and D. W. Burgess |
| | P4A.9 | Summer Severe Weather Occurrence in Southern Ontario—A Climatological Perspective Sudesh Boodoo, Meteorological Service of Canada, King City, Ontario, Canada; and D. Hudak, N. Donaldson, R. Patterson., and D. Sills |