"Ten weather and climate events that greatly impacted Oklahoma" Derek Arndt, Associate State Climatologist at the Oklahoma Climatological Survey Oklahoma has experienced a great number of notable weather and climate events, from the spectacular to the terrible to the unexpected. Many of these events changed the state's landscape, both literally and figuratively. This talk, based upon a book nearing completion, selects ten such events, which were notable for their statewide or global impact on science or society.