Currently, the Tulsa National Weather Service Forecast Office issues severe thunderstorm and tornado warnings for 25 counties in Eastern Oklahoma and 7 in Northwest Arkansas. Before any scores can be tabulated, we need to know a few things.
Property damage resulting from a storm also completes the first step in the verification process.
No verbal acknowledgment or acknowledgment not meeting criteria counts as an unverified warning. A missed event is recorded when a warning is prompted by any of the verification criteria mentioned above. This tells us how well our issued warnings verify. A CSI score of 1 is optimal. We strive to have 0 unverified warnings, thus warned events would equal total events.