KANSAS CITY, Mo. (AP) - The National Weather Service has issued an excessive heat warning for much of northeastern Kansas as high temperatures mix with abundant moisture in the air to create dangerous conditions. Heat advisories and warnings remain in effect until 9 pm. The weather service says temperatures are expected to be in the upper 90s, with heat indices soaring as high as 116 degrees. A swath of counties in northeast Kansas and northwest Missouri was expected to have the hottest conditions. High temperatures are expected to drop to the mid to lower 90s starting on Tuesday.