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...Hot And Humid Conditions To Continue... ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT FRIDAY... The National Weather Service in Little Rock has issued a Heat Advisory, which is in effect from 11 AM to 8 PM CDT Friday. * EVENT: Heat index values in the 105-110 range are expected through Thursday evening and again from Friday late morning through Friday evening. * AREAS AFFECTED: Most of the northern half of Arkansas...or generally along and north of the Arkansas River Valley. * Impacts: High heat index values make it difficult for your body to cool itself off. This could lead to heat stress or heat stroke for anyone engaged in outdoor activities.