National Weather Service United States Department of Commerce

Major Winter Storm Ongoing in the Upper Midwest and Great Lakes; Severe Weather Along the East Coast

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through today across the Upper Midwest and Upper Great Lakes. Widespread severe storms are expected across the entire eastern U.S. with the highest threat over the interior Mid-Atlantic, where there is a risk for damaging wind gusts and a few tornadoes. Heat continues to build in the West. Read More >

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Last Map Update: Mon, Mar 16, 2026 at 4:10:40 pm PDT

Moderate HeatRisk is expected today through Friday with temperatures well above normal. To mitigate your risk: drink plenty of water or sports drink, do not leave children, the elderly, or pets in unattended vehicles, take frequent breaks in air conditioning or shade, and shift activities outdoors to cooler times of the day.
Staying cool? Stay safe! 🌊 Don't let the sunshine fool you! While the air is heating up, our coastal waters remain dangerously cold. If you’re heading to the beach this week, please keep these "Big Three" safety rules in mind: 1. Watch for Cold Water Shock: Jumping into cold water can cause an involuntary gasp reflex and immediate loss of muscle control. It happens faster than you think. 2. Life Jackets are Must-Haves: Whether you’re on a boat, a paddleboard, or near the surf, wear your life jacket. It saves lives when your muscles won't. 3. Eyes on the Horizon: Never turn your back on the ocean. "Sneaker waves" can surge up the beach without warning. Stay safe and look out for one another! 🚩 #BeachSafety #ColdWaterShock #CAwx #BayAreaWX
Much above normal temperatures in the 80s near the coast and upper 80s to mid 90s across the interior are expected this week across the Bay Area and Central Coast. Portions of the interior Central Coast may reach the upper 90s starting mid to late week. Overnight lows in the upper 50s to low 60s will offer some relief to the lower elevations but will offer minimal relief within the higher elevations. Conditions will be much above normal along the coast next week but coastal residents may experience more relief overnight than those across the interior. The risk of heat related illnesses will increase with each additional day of heating from this event.

 

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