About 50 million people on alert for record heatwave after winter in the US

A record heatwave affects about 50 million people in the southwestern United States, with extreme temperatures unusual for March that have already surpassed historic highs.

About 50 million people on alert for record heatwave after winter in the US

TL;DR

  • About 50 million people in the US Southwest are under heat alerts.
  • Record high temperatures are being recorded for March, unusual for the end of winter.
  • North Shore, California, reached 108°F (42°C), tying a March record from 1954.
  • Temperatures in some areas are 20-30 degrees above normal for March.
  • Thermal, California, could reach 110°F (43.3°C), potentially a new US March record.
  • Phoenix, Arizona, recorded 102°F (38.8°C), the first time over 100°F in March since 1988.
  • Las Vegas, Nevada, surpassed its March temperature record with 99°F (37.2°C).
  • The extreme heat and drought increase the risk of wildfires, even in northern states.
  • Extreme heat is considered the deadliest weather hazard in the United States.