* WHAT. For the first Excessive Heat Warning, dangerously hot conditions with heat index values up to 111. For the second Excessive Heat Warning, dangerously hot conditions with heat index values up to 111 expected. * WHERE. Muskogee, Okfuskee, Creek, Nowata, Okmulgee, Osage, Pawnee, Rogers, Tulsa, Wagoner, Washington OK, Haskell, Latimer, McIntosh, and Pittsburg Counties. * WHEN. For the first Excessive Heat Warning, until 9 PM CDT this evening. For the second Excessive Heat Warning, from noon to 9 PM CDT Tuesday. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.

* WHAT. For the first Heat Advisory, heat index values up to 105. For the second Heat Advisory, heat index values up to 108 expected. * WHERE. Cherokee and Ottawa Counties. * WHEN. For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from noon to 9 PM CDT Tuesday. * IMPACTS. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.

* WHAT. For the Heat Advisory, heat index values up to 107. For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 110 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Sequoyah, Craig, Mayes, and Le Flore Counties. * WHEN. For the Heat Advisory, until 9 PM CDT this evening. For the Excessive Heat Warning, from noon to 9 PM CDT Tuesday. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.

* WHAT. Heat index values up to 110 expected. * WHERE. Portions of central, east central, northern, northwest, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN. For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from noon to 9 PM CDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Dangerously hot conditions with heat index values up to 114 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Sequoyah, Craig, Mayes, and Le Flore Counties. * WHEN. From noon to 9 PM CDT Tuesday. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.

* WHAT. Dangerously hot conditions with heat index values up to 115 expected. * WHERE. Muskogee, Okfuskee, Creek, Nowata, Okmulgee, Osage, Pawnee, Rogers, Tulsa, Wagoner, Washington OK, Haskell, Latimer, McIntosh, and Pittsburg Counties. * WHEN. From noon to 9 PM CDT Tuesday. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.

* WHAT. Heat index values up to 110 expected. * WHERE. Cherokee and Ottawa Counties. * WHEN. From noon to 9 PM CDT Tuesday. * 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, southern, southwest, and western Oklahoma and northern Texas. * WHEN. From noon to 9 PM CDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

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

* WHAT. Heat index values of 105 to 109 expected. * WHERE. In Arkansas, Benton, Carroll, Madison, and Washington AR Counties. In Oklahoma, Cherokee, Adair, Delaware, and Ottawa Counties. * WHEN. From noon today to 9 PM CDT this evening. * IMPACTS. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.

* WHAT. Dangerously hot conditions with heat index values up to 113 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Muskogee, Okfuskee, Sequoyah, Craig, Creek, Mayes, Nowata, Okmulgee, Osage, Pawnee, Rogers, Tulsa, Wagoner, Washington OK, Haskell, Latimer, Le Flore, McIntosh, and Pittsburg Counties. * WHEN. From noon today to 9 PM CDT this evening. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.