Orange County

* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 105 expected. Low temperatures will be mostly in the 70s. * WHERE...Orange County Inland Areas. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Increasing temperatures through Friday will increase the threat of heat-related illness across populations.More

* WHAT...Hot daytime conditions with high temperatures between 100 and 110 common. Warm overnight conditions will bring less relief than usual. * WHERE...Most mountains and valleys of Los Angeles, Ventura, and Santa Barbara Counties. * WHEN...Until 8 PM PDT Friday. * 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.More

* WHAT...Hot daytime conditions with high temperatures between 92 and 102 common. Warm overnight conditions will bring less relief than usual. * WHERE...Most coastal areas of Los Angeles, Ventura, and southern Santa Barbara Counties. * WHEN...Until 8 PM PDT Friday. * 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.More

* WHAT...High temperatures in the mid 80s near the beaches to the lower to mid 90s for higher coastal terrain expected. Low temperatures mostly in the 70s. * WHERE...Orange County Coastal Areas. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.More