* WHAT...For the Heat Advisory, temperatures 100 to 105 with widespread Moderate HeatRisk and areas of Major HeatRisk. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 110 expected with widespread Major HeatRisk.
* WHERE...Butte County Below 1000 ft, N. Sac Valley in Tehama County, Shasta Metro, Sierra (Tehama-Plumas) 1000-3000 ft, W Tehama Co Foothills 1000-3000 ft, and W. Shasta County 1000-3000 ft.
* WHEN...For the Heat Advisory, until 11 PM PDT Saturday. For the Extreme Heat Warning, from 11 AM Sunday to 11 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses, especially in those more sensitive to heat.
* ADDITIONAL DETAILS...Hot daytime temperatures will occur in other Valley locations as well, though Delta breeze influence will better moderate local temperatures in the remainder of the Valley.