Extreme Heat Watch Issued for Southern California Coastal and Inland Areas
The National Weather Service in San Diego has issued an Extreme Heat Watch from Friday morning through Wednesday evening for several areas in Southern California. High temperatures are projected to reach the upper 100s in inland valleys.
The National Weather Service issued the watch on September 30 at 1:41 PM PDT. The warning period runs from Friday morning through Wednesday evening, October 7 at 9:00 PM PDT. Affected areas include Orange County Coastal and Inland Areas, the San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas and Inland Valleys, and the Santa Ana Mountains and Foothills.
During the hottest days of the heat wave, temperatures near the coast are expected to reach around 90 degrees, while valley temperatures will range from the upper 90s to upper 100s. Overnight lows for coastal areas into the western valleys will remain elevated in the lower to mid 70s through the weekend and into next week.
Forecasters report that this long-duration heat wave will begin late this week and persist through much of next week into the following weekend. A Moderate or greater HeatRisk is expected along the coast and valleys, with Major to Extreme HeatRisk projected for inland coastal areas into the western valleys.
The National Weather Service noted that risk of heat-related illnesses increases significantly during extended extreme heat events.