Nowcasting with the Local Analysis and Prediction System (LAPS)
The Experimental Warning Program (EWP) of NOAA's Hazardous Weather Testbed (HWT) is held at the National Weather Center every spring since 2008. EWP provides a platform to evaluate vLAPS monitoring and nowcasting skills. In this presentation, we will describe the variational version of the Local Analysis and Prediction System (vLAPS). We will select several cases of supercell storms and tornadoes from both EWP 2013 and 2014 to highlight the real-time performance of variational LAPS including some feedback from forecasters, issues identified, and discuss plans for future improvement.