Heat Advisory

* WHAT...Hot temperatures of 100 to 105 degrees expected with low temperatures in the mid to upper 60s.

* WHERE...Shasta Valley in central Siskiyou County. This includes the communities of Yreka, Montague, Klamath River and Weed.

* WHEN...From 11 AM Tuesday to 11 PM PDT Thursday.

* IMPACTS...Hot temperatures will lead to a moderate risk of heat illnesses, especially for those without adequate cooling methods.