• Tropical Storm Rachel brings flash-flood threat to Southern California and U.S. Southwest

    Tropical Storm Rachel strengthened while accelerating northeast over the eastern Pacific at 06:00 UTC on October 10, 2026, and is forecast to approach northern Baja California or Southern California late October 10 or early October 11. Heavy rain, flash and urban flooding, strong winds, dangerous surf and coastal flooding are forecast across parts of the southwestern United States, where the Weather Prediction Center (WPC) has issued Moderate Risk areas for excessive rainfall.

  • Extreme Heat Watches issued for California and Arizona as anomalous heat intensifies across parts of the Southwest

    Extreme Heat Watches have been issued for parts of California and Arizona as an anomalous and unusually prolonged heat event intensifies across the Southwest United States. Watches begin Monday, March 16, 2026, in parts of Southern California, then expand into parts of Arizona and southeast California later in the week, with some desert areas forecast to reach up to 43°C (109°F) and temperatures in some locations rising 11–17°C (20–30°F) above normal for mid-March.