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| Figure 1. KFDR storm-relative velocity and ProbSevere Version 2 tornado probability valid 2114 - 2124 UTC 02 May 2018. |
-J. Sieglaff
Wednesday, May 2, 2018
KOUN Experimental Tornado Warning
The forecaster covering the southern Norman WFO noticed the tornado probability from ProbSevere Version 2 (All Hazards) rapidly increasing between 2114 and 2124 UTC Wednesday afternoon (Figue 1). The rapid increase in tornado probabilities was due to rapidly strengthening low-level circulation. ProbSevere here aided the forecaster to issue an experimental tornado warning--increasing lead-time and confidence in his decision making. Storm chaser live video showed a tornado developed at 2139 UTC.
-J. Sieglaff
-J. Sieglaff
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