* 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.

* 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. Dangerously hot conditions with heat index values up to 113 expected. * WHERE. Portions of central, east central, southeast, and southwest Oklahoma. * WHEN. From 11 AM this morning to 9 PM CDT this evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values between 105 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. 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.

SVRTSA The National Weather Service in Tulsa has issued a * Severe Thunderstorm Warning for. Northwestern Rogers County in northeastern Oklahoma. Southern Washington County in northeastern Oklahoma. * Until 530 AM CDT. * At 449 AM CDT, a severe thunderstorm was located 4 miles northeast of Ochelata, moving southeast at 35 mph. HAZARD. Half dollar size hail. SOURCE. Radar indicated. IMPACT. Damage to vehicles is expected. * Locations in or near the path include. Bartlesville. Claremore. Verdigris. Oologah. Ramona. Ochelata. Foyil. Talala. Vera. This includes Interstate 44 between mile markers 241 and 259.

At 512 AM CDT, a severe thunderstorm was located over Talala, moving southeast at 45 mph. HAZARD. Quarter size hail. SOURCE. Radar indicated. IMPACT. Damage to vehicles is expected. Locations in or near the path include. Claremore. Oologah. Foyil. Talala. This includes Interstate 44 between mile markers 246 and 259.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 463 IN EFFECT UNTIL 11 AM CDT THIS MORNING FOR THE FOLLOWING AREAS IN ARKANSAS THIS WATCH INCLUDES 7 COUNTIES IN NORTHWEST ARKANSAS BENTON CARROLL CRAWFORD MADISON WASHINGTON AR IN WEST CENTRAL ARKANSAS FRANKLIN SEBASTIAN IN OKLAHOMA THIS WATCH INCLUDES 18 COUNTIES IN EAST CENTRAL OKLAHOMA CHEROKEE MUSKOGEE SEQUOYAH IN NORTHEAST OKLAHOMA ADAIR CRAIG DELAWARE MAYES NOWATA OKMULGEE OSAGE OTTAWA ROGERS TULSA WAGONER WASHINGTON OK IN SOUTHEAST OKLAHOMA HASKELL LE FLORE MCINTOSH THIS INCLUDES THE CITIES OF BARTLESVILLE, BENTONVILLE, BERRYVILLE, CHARLESTON, CLAREMORE, EUFAULA, EUREKA SPRINGS, FAYETTEVILLE, FORT SMITH, GROVE, HUNTSVILLE, JAY, MIAMI, MUSKOGEE, NOWATA, OKMULGEE, OZARK, PAWHUSKA, POTEAU, PRYOR, ROGERS, SALLISAW, SPRINGDALE, STIGLER, STILWELL, TAHLEQUAH, TULSA, VAN BUREN, VINITA, AND WAGONER.