SPC Evaluation: Steve Weiss part 1

• SPC had only limited opportunities to examine the parallel runs of the HRW WRFs during the summer 30 day evaluation period. 

• More importantly, however, we have been utilizing the once daily experimental WRF-NMM4 in both the annual Hazardous Weather Testbed Spring Experiment activities and daily operational severe weather forecasting at SPC since April 2004. 

• This convection-allowing model was first tested during the 2004 Spring Experiment, which focused on exploring the utility of high resolution versions of the WRF-NMM, as well as WRF-ARW models from NCAR and OU-CAPS, to provide useful guidance for severe weather forecasters. 

• Spring Experiments examining WRF-NMM and WRF-ARW models were also conducted in 2005 and 2007, where intensive tests and evaluations were again conducted daily during severe weather episodes across the central and eastern U.S.