Extreme Heat Watch Issued for Southern California Counties
The National Weather Service in San Diego has issued an Extreme Heat Watch for several coastal and inland areas of Southern California, effective from Friday morning through Wednesday evening.
The National Weather Service in San Diego, California, issued the Extreme Heat Watch on September 30 at 8:47 PM PDT. The watch period takes effect from Friday morning through Wednesday evening, covering a prolonged period of dangerously hot conditions across the region.
Regions affected include Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and the Santa Ana Mountains and Foothills. High temperatures on the hottest days are expected to range from around 90 degrees Fahrenheit near the coast to the upper 90s and around 105 degrees in the valleys.
Overnight low temperatures for coastal areas into the western valleys are forecast to warm into the lower to mid 70s over the weekend, with elevated overnight temperatures continuing into next week. This long-duration heat wave will bring Moderate or greater HeatRisk to the coast and valleys, as well as Major to Extreme HeatRisk for inland coastal areas into western valleys.
Official weather reports emphasize that heat-related illnesses increase significantly during extreme heat events, which are expected to continue through much of next week and into the following weekend.