The Peggy Helmerich Library will be closed temporarily for light renovation. We anticipate the closure to last several weeks. During the closure, any items you have placed on hold will be sent to Hardesty Library.
Tulsa Wiki is hosted by the Tulsa City-County Library. It will eventually contain everything about Tulsa, Tulsa County, and items related to Green Country that impact Tulsa County. (e.g. Port of Catoosa, Hard Rock Casino, etc.).
If you'd like to contribute and need help getting started, visit http://www.tulsawiki.org/Help for instructions.
Traditional classes begin August 20, 2012.
Traditional classes end May 23, 2013.
Continuous Learning begins August 6, 2012.
Continuous Learning ends June 7, 2013.
If any additional days are missed due to inclement weather, the school year will be adjusted appropriately.
Source: Tulsa Public Schools Official Web Site, 7/12.
The Storm Prediction Center of the National Weather Service includes maps, tracks, averages and summaries that apply to tornadic activity in the United States. The Norman office of the National Weather Service keeps a historic list of tornado data by county. The EF Scale became operational on February 1, 2007 and is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
Source: National Weather Service web sites.