* WHAT. Dangerously hot conditions with heat index values up to 110 to 115. * 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. Until 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.

* WHAT. Dangerously hot conditions with heat index values around 110 expected. * WHERE. Portions of central, east central, northern, southeast, southern, and southwest Oklahoma and northern Texas. * 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.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 486 IN EFFECT UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN OKLAHOMA THIS WATCH INCLUDES 6 COUNTIES IN NORTHEAST OKLAHOMA CRAIG NOWATA OSAGE OTTAWA PAWNEE WASHINGTON OK THIS INCLUDES THE CITIES OF BARTLESVILLE, MIAMI, NOWATA, PAWHUSKA, PAWNEE, AND VINITA.