Minor changes tomorrow, major changes by the weekend

Patchy fog and cool temperatures will kick off our Bay Area Tuesday with sunshine and unseasonably mild to warm temperatures for the afternoon. Highs are expected to climb 5 to 10 degrees above average, making for a pleasant stretch of weather through the middle of the week. Despite the sunshine, coastal concerns remain. A Coastal Flood Advisory continues for coastal communities through Tuesday afternoon, while bayside communities remain under an advisory through Friday. Elevated tides are increasing the risk of minor coastal flooding, especially during high tide. Residents in low-lying shoreline areas should be prepared for possible water inundation. Looking ahead, the quiet weather pattern is expected to change toward the end of the week. A storm system could bring a return of rain to the Bay Area by the weekend, with snow also expected in the Sierra. Forecast details are still coming into focus, but cooler, wetter weather appears to be on the horizon after our stretch of unusually w