Finally got a cell to exceed 25 flashes/min (only lasted for a minute or two), which triggered a DTA (since there is a lower threshold in the west).

At the same time, ProbSevere was near the highest we had seen all day at ~36% with MESH of 0.83 in.

The OT algorithm also began to indicate a possible OT with the storm at roughly the same time.

Hard to say which of these products was the first to key in on the intensification as they all started showing signs at approximately the same time. However, the lightning time series does show a rapid increase just prior to 2245 (lightning jump?).

Issued a SPS based on the experimental products and base radar data.

Ertel