The San Francisco Bay Area is preparing for a record-setting heat wave, with temperatures expected to rise dramatically this week. Forecasts indicate that some regions may see temperatures reaching the 80s and 90s, feeling more like early August than early spring. The East Bay is particularly bracing for this unusual March heat, with a warming trend beginning soon. The National Weather Service warns that the heat wave could break records and contribute to increased fire risks along the Central Coast. Residents are advised to stay informed as conditions change, with phone weather apps potentially providing inaccurate forecasts.