* WHAT. For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 115 expected. For the Heat Advisory, heat index values up to 110 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Muskogee, Sequoyah, Mayes, Okmulgee, Rogers, Tulsa, Wagoner, Haskell, Le Flore, and McIntosh Counties. * WHEN. For the Excessive Heat Warning, until 9 PM CDT this evening. For the Heat Advisory, from noon to 9 PM CDT Thursday. * 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 108 expected both today and Thursday. * WHERE. In Arkansas, Benton, Carroll, Madison, and Washington Counties. In Oklahoma, Cherokee, Okfuskee, Adair, Craig, Creek, Delaware, Nowata, Osage, Ottawa, Pawnee, and Washington Counties. * WHEN. For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from noon to 9 PM CDT Thursday. * IMPACTS. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.

* 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 113 expected. * WHERE. In Arkansas, Crawford, Franklin, and Sebastian Counties. In Oklahoma, Muskogee, Sequoyah, Mayes, Okmulgee, Rogers, Tulsa, Wagoner, Haskell, Le Flore, and McIntosh 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 Thursday. * 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 106. For the second Heat Advisory, heat index values up to 109 expected. * WHERE. In Arkansas, Benton, Carroll, Madison, and Washington AR Counties. In Oklahoma, Cherokee, Adair, Craig, Creek, Delaware, Nowata, Osage, Ottawa, Pawnee, and Washington OK Counties. * WHEN. For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory and third Heat Advisory, from noon to 9 PM CDT Thursday. * 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 112 expected. * WHERE. Okfuskee County. * WHEN. For the Heat Advisory, until 9 PM CDT this evening. For the Excessive Heat Warning, from noon to 9 PM CDT Thursday. * IMPACTS. The combination of hot temperatures and high humidity will create a dangerous situation in which heat related illnesses are more likely.