...An Excessive Heat Warning has been extended in time and is now in effect until 9 pm Saturday Evening... ...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 9 PM CDT SATURDAY... * EVENT...Daytime temperatures in the lower 100s and elevated humidity levels will result in maximum heat index values of near or exceeding 110 degrees this afternoon and Saturday. * TIMING...Heat index values should fall below 110 degrees early this evening, but will approach 110 degrees again as early as late Saturday Morning, remaining elevated through Saturday Evening. * IMPACT...Heat related illnesses will be possible for those involved in outdoor activities and home bound persons without air conditioning or circulated air.