A dangerous heat wave gripped Southern California on Friday and is forecast to continue with little relief through at least next Thursday. The National Weather Service placed extreme heat warnings in effect for coastal and valley areas of Los Angeles and Ventura counties, as well as parts of Santa Barbara County.

Downtown Los Angeles reached 102 degrees on Friday, breaking the daily record. Similar spikes occurred in Long Beach and other spots, with valleys such as Woodland Hills hitting 103 degrees. Forecasters expect highs of 90 to 105 degrees across much of the region this weekend, with coastal areas in the 90s and inland valleys potentially reaching 102 to 107 degrees.

Temperatures are projected to remain elevated with only minor day-to-day changes through the week. Some models indicate possible record-breaking heat from Wednesday through Friday. Overnight lows will stay mostly in the 70s, offering limited cooling.

The warnings cover more than 34 million residents and highlight risks of heat-related illness, especially for children, seniors, and those without air conditioning. Officials urge residents to stay hydrated, avoid outdoor activity during peak heat, and check on vulnerable neighbors.

Increased fire danger accompanies the heat due to low humidity and windy conditions in some areas. The prolonged event comes as summer has ended, yet a strong high-pressure system continues to dominate the pattern.

Residents are directed to cooling centers listed by local authorities if needed. The warnings may extend beyond October 8 if conditions warrant.