What is already known:
What this study adds:
Convection-allowing models (CAMs) are one of the newest improvements the area of numerical weather prediction (NWP) has seen in the last 10 years. One of the new diagnostic fields these models output is updraft helicity (UH), a measure of rotation in modeled storms. Data collected from Storm Scale Ensemble of Opportunity (SSEO) and its individual members in 2012 is used to create proxy storm reports derived from UH track-like objects. Daily probabilistic forecasts are created from the reports allowing for a direct comparison to the observed for that day. 2x2 contingency tables are constructed daily to gain insight to if UH provides a skillful and reliable probabilistic serve weathers forecast and understand the characteristics of the SSEO and members. Various verification metrics are calculated along with looking at correlation data and probabilistic outlooks to provide a fuller understanding. The SSEO is found to have good skill and reliability throughout the year with especially good skill in the spring time (March to June).