Extreme Heat Warning

* WHAT...Hot daytime conditions with high temperatures between 100 and 108 common. Warm overnight conditions will bring less relief than usual.

* WHERE...Antelope Valley.

* WHEN...From 10 AM Thursday to 8 PM PDT Monday.

* IMPACTS...There is a high risk for dangerous heat illness, especially for sensitive groups like the very young, the very old, those without air conditioning, and those active outdoors.