
ALT High pressure builds over the area bringing hot conditions to southwestern CA, from the interior to the coastal valleys. Monsoonal moisture will also arrive Tuesday, leading to temperatures feeling hotter than expected. Stay hydrated, seek shade, and watch for signs of heat exhaustion in yourself and others. Seek shelter in cool buildings, and never leave anyone in a parked car. Vehicles can become dangerously hot quickly.

ALT Color graphic showing how a tsunami is generated by an underwater earthquake. The ocean floor moves vertically, displacing a large amount of water. Waves are generated and move out in all directions across the ocean, some traveling as fast as 600 miles per hour. As waves enter shallow water nearshore, they compress, their speed slows, and they build in height. The wave height increases, and associated currents intensify, becoming a threat to life and property.

ALT Potential Impacts: Wet roads, minor road flooding, traffic delays. Enhanced rockslides & mudslides. Canceled outdoor events. Snowy & icy conditions on mountain roads. With a chance of higher rain totals and rates, continue to monitor the forecast for the latest potential impacts. Details (Wed Night Through Saturday): Total Rain: 0.25-1.0 inches, with 1.0-2.0 inches mtns & hills. Highest LA County. 30% chance of 2x these amounts. Peak Rates: 0.10-0.25 inch/hr common. Local 0.25-0.50 inch/hr. Highest rates in LA County and in thunderstorms. Snow Totals: 3-6 inches (elev 6,500+ feet). Confidence: Moderate.
































