Heat Advisory: Washington; Nowata; Craig; Ottawa; Pawnee; Tulsa; Rogers; Mayes; Delaware; Creek; Okmulgee; Wagoner; Muskogee; Western Osage; Northeast Osage; Southeast Osage

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Heat Advisory — Washington; Nowata; Craig; Ottawa; Pawnee; Tulsa; Rogers; Mayes; Delaware; Creek; Okmulgee; Wagoner; Muskogee; Western Osage; Northeast Osage; Southeast Osage Severity: Moderate. Certainty: Likely. * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values 110 to 115. For the Heat Advisory, heat index values 105 to 110 expected. * WHERE...Portions of east central and northeast Oklahoma. * WHEN...For the Extreme Heat Warning, until 8 PM CDT Friday. For the Heat Advisory, from 8 PM Friday to 8 PM CDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.