* WHAT...High temperatures ranging from 95 to 105 degrees. Low temperatures in the upper 60s to lower 70s, except mid 70s to lower 80s in the foothills and mountains.
* WHERE...A portion of southwest California.
* WHEN...Until 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses. Warmer than normal low temperatures will add to the heat discomfort.