Southern California Heat Wave Shatters October Records, with Relief Delayed Until Friday
A persistent high-pressure ridge has driven an unprecedented October heat wave across Southern California, shattering multiple daily temperature records and eliminating typical overnight cooling. Downtown Los Angeles is on a four-day streak of 100-degree days, potentially setting a new all-time record for the month. Extreme heat warnings remain in effect through Thursday, with temperatures running 15 to 22 degrees above normal. While coastal areas face dangerous surf and potential flooding from Hurricane Rachel, relief is not expected until Friday, with some forecasters predicting the heat may persist into mid-October.