A massive ridge of high pressure is parking itself over California, which means we are in for a steady, major warm-up that will peak this weekend and early next week. Rest of the Work Week: Expect a gradual warm-up each day. The Weekend Peak: This is when things get serious. Temperatures will jump significantly on Saturday and Sunday. Heat Risk Levels: Saturday: Most of our region is under a "Minor Heat Risk." This means it’s warmer than usual, but mostly just a "don't forget your water" type of day. Sunday & Monday: Parts of the interior valleys move into "Moderate Heat Risk." This can be dangerous for sensitive groups (like the elderly or those working outdoors) if they don't take breaks and stay hydrated.