...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 9 PM CDT FRIDAY... The National Weather Service in Tulsa has cancelled the Excessive Heat Warning. * HEAT INDEX VALUES...From 105 to 110 with potential for values near 115 degrees. * TEMPERATURE...High temperatures in the upper 90s to around 105. * Impacts...The combination of hot temperatures and high humidity will create a dangerous situation in which heat illnesses are possible.