...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT TUESDAY... The National Weather Service in Tulsa has issued a Heat Advisory, which is in effect from 11 AM to 8 PM CDT Tuesday. * TEMPERATURE...Hot and humid conditions are expected on Tuesday with heat index values climbing into the 105 to 110 degree range Tuesday afternoon. * Impacts...The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are possible.