Heat Waves

Extreme Weather Temperature Temperature Records Extreme Temperatures Extreme Weather Events Temperature Extremes Extreme Heat Record Temperatures Health Risks Temperature Alerts

Western Heat Wave Drives Early Snowmelt That Raises Wildfire Risk

Record warmth with scant snow is straining Western water systems.

Record March Heat Ends Death Valley's Low-Desert Superbloom Early

New PG&E Outage Cuts Power to About 7,400 on San Francisco’s West Side

Phoenix Closes High-Risk Trails During Record-Early Extreme Heat Warning

Western U.S. Swelters in Multi-Day Heat Wave 25–40°F Above Normal, Highs 96–109°F

L.A. County Warns Against Ocean Water Contact at Six Beaches After Bacteria Spikes

Los Angeles Opens Hundreds of Cooling Centers as Heat Wave Grips Southern California

About a Dozen Cactus League Games Moved to Evenings as Rare March Heat Builds

California Ski Resorts Cut Seasons Short as Heat Wave Strips Sierra Snow

Cactus League Adjusts as Early Heat Wave Triggers Night Games and Cooling Measures

LA County Updates Beach Bacteria Advisories During Heat Wave

Senamhi Warns of New Heat Wave for Lima and Peru’s Coast Through March 8

Rio de Janeiro Enters Heat Protocol Level 3 as Maximum Hits 39.2°C

Victoria Declares State of Disaster as Extreme Bushfires Follow Brutal Heatwave

Woman Hospitalized With Severe Foot Burns From Scalding Sand in Valeria del Mar

Climate Change Made Iberian Fire-Weather 40 Times More Likely, Analysis Finds

Rip Currents, Sneaker Waves Prompt Beach Hazard Warning for Bay Area Through 11 P.M.

Wildfires Climb Past 80 in B.C. as Heat Wave Lingers

Heatwave Alters Attendance as Gràcia Festivities See Tensions Over Tap Ban

Authorities Probe Death of 4-Year-Old Left in Locked Car During Negev Heat Wave