A summer cold front is expected to move into North Texas, slightly lowering temperatures and bringing a low chance of isolated thunderstorms through the weekend. Similarly, Tulsa, Oklahoma will see seasonably hot temperatures with a slight chance of storms as a front approaches, leading to cooler conditions over the weekend. In Southern California, an intense heat wave is causing temperatures to soar into the triple digits, prompting excessive heat warnings and elevated fire weather concerns. San Diego County is also experiencing sweltering conditions with heat warnings in effect, urging residents to stay hydrated and avoid the sun.