NWS issued severe thunderstorm warnings and alerts for Los Angeles County, Orange County, and Southern California on July 17, 2026.

The entities involved

• Los Angeles County →

  county in California, United States

  • Elevated surf and high tides are expected in Los Angeles County, leading to flooding and posing risks to coastal infrastructure.Mon 01:03
  • Storms are increasing the potential for water capture in Los Angeles County.Sat 10:40
• Orange County →

  county in New York, United States

  • A community serving the Chapel Hill area, where Jim Nelson is a resident, is located in Orange County.Mon 03:42
  • Turtles have been observed nesting on beaches within Orange County.Sat 03:31
• National Weather Service →

  U.S. forecasting agency of the National Oceanic and Atmospheric Administration

  • Rainfall caused flooding in Jefferson County, involving the National Weather Service.Mon 17:45
  • El Nino is causing global weather patterns to bring heat and dryness to various regions, testing global food output.Mon 16:37
• Southern California →

  geographic and cultural region

  • HNTB was recognized by the Los Angeles Business Journal, which noted its service to Southern California communities, its roots in Pasadena, and its leadership structure.Mon 14:08
  • El Niño drives sea level rise and coastal erosion in Southern California.Mon 12:57

Related events

• Flash flood warnings were issued for Riverside County, Southern California, following weather alerts from the National Weather Service.Aug 12
• The National Weather Service issued extreme-heat warnings for San Diego County on July 9, 2026.Jul 9
• NWS issued warnings for Las Vegas Valley, Clark County, and Southern California on June 25, 2026.Jun 26
• The National Weather Service issued a warning regarding coastal flooding in Marin County.Sep 7
• Storm development near Baja California is being monitored, with its movement tracked toward San Diego.Sep 2