Travelers in the Southwest and Plains face risks from extreme heat, which can lead to heat-related illnesses if precautions are not taken. Flash flooding in the Appalachians and Southeast poses hazards for drivers, especially during peak commute hours. Thunderstorms in the Four Corners and northern Plains may disrupt outdoor activities and travel plans. Elevated surf and rip currents along south-facing beaches in Los Angeles County also present dangers for beachgoers. Flyers may experience delays due to jet stream headwinds.