1. Edward “Ted” Mansell NSSL/WRDD Thunderstorm Electrification and Lightning Simulation

2. 22 NSSL Laboratory Review February 17-19, 2009 Lightning at NSSL NSSL is a leader in both observation and numerical simulation of thunderstorm electrification and lightning. Growing interest in using lightning in forecast data assimilation and for nowcasting (e.g., identifying severe potential, cell tracking). Simulated Cloud-to- Ground lightning strike Balloon launch of field meter

3. Positive leaders Negative leaders 33 NSSL Laboratory Review February 17-19, 2009 NSSL Numerical Modeling The NSSL storm-scale model is a unique tool due to enhancements by NSSL scientists: Research in dynamics, microphysics, electrification, and data assimilation.

4. 44 NSSL Laboratory Review February 17-19, 2009 Lightning and Charge Structure Inferred charge structure from lightning observation + + – Model-simulated charge structure and lightning West -30km -25km East Altitude (km)

5. 56 NSSL Laboratory Review February 17-19, 2009 Lightning correlations Isolated cells Groups of cells Graupel (soft hail) echo volume (km 3 ) Flash rate vs. Graupel