strong satellite growth rates boost ProbSevere value ahead of experimental warning

A storm south of Norman, OK exhibited strong glaciation and normalized satellite growth rates at 19:37Z, provided by GOES-East, to boost the probability of severe to over 60% by 20:34Z. Forecasters in Norman were shown the 2D flash rate/effective bulk shear predictor in ProbSevere, which gave them knowledge that well-sheared storms don't need super high flash rates to contribute postiviely to the overall probability. This knowledge helped forecasters quickly assess the storm and issue a severe thunderstorm warning at 20:41Z. The storm later produced a tornado.

Fig. 1: ProbSevere contours and MRMS MESH.