* WHAT. For the first Heat Advisory, heat index values up to 109. For the second Heat Advisory, heat index values up to 109 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Cherokee, Muskogee, Okfuskee, Sequoyah, Craig, Creek, Mayes, Nowata, Okmulgee, Osage, Pawnee, Rogers, Tulsa, Wagoner, Washington OK, Choctaw, Haskell, Latimer, Le Flore, McIntosh, Pittsburg, and Pushmataha Counties. * WHEN. For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from noon to 9 PM CDT Wednesday. * IMPACTS. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.

* WHAT. Heat index values up to 110 expected. * WHERE. Portions of central, east central, northern, northwest, southeast, southwest, and western Oklahoma. * WHEN. From 11 AM to 9 PM CDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 105 to 109 expected Wednesday afternoon. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Cherokee, Muskogee, Okfuskee, Sequoyah, Craig, Creek, Mayes, Nowata, Okmulgee, Osage, Pawnee, Rogers, Tulsa, Wagoner, Washington OK, Choctaw, Haskell, Latimer, Le Flore, McIntosh, Pittsburg, and Pushmataha Counties. * WHEN. From noon to 9 PM CDT Wednesday. * IMPACTS. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.