A pre-Memorial Day heat wave will prime the Bay Area for another dry fire season, roasting the region’s landscape with some of the hottest weather so far in 2022 and pushing temperatures in some cities close to 100 degrees.

A month ahead of the official start of summer, high temperatures could climb 5 to 20 degrees above normal on Tuesday and Wednesday for much of the Bay Area — a pre-Memorial Day blast of hot weather that prompted a heat advisory for the entire Central Valley and a red flag warning for a broad swath of Northern California stretching from Vallejo to Redding.