Record Heat Wave Hits San Diego County: Advisories and Precautions in Place

Sweltering heat is set to engulf parts of San Diego County this week, potentially bringing record-breaking temperatures. Meteorologists from NBC 7 forecast that the inland valleys and mountains will experience temperatures in the 90s until Wednesday, with some areas possibly reaching near triple digits. In response to the heat surge, a heat advisory has been issued, effective until 8 p.m. Wednesday, for the county’s inland valleys and mountains, covering cities like El Cajon, San Marcos, Poway, Escondido, Santee, Pine Valley, and Julian. The National Weather Service warns that this advisory is necessary due to potential heat-related illnesses. Residents are strongly encouraged to stay indoors or seek shade and ensure they stay hydrated by drinking plenty of fluids.

In light of the excessive heat, the U.S. Forest Service has temporarily closed the Three Sisters Falls hiking trail and Cedar Creek Falls area to hikers through Wednesday. With temperatures soaring 10 to 15 degrees above the seasonal average, this warn spell occurs just before the summer solstice on Friday. However, the weather is expected to pivot, as a cool-down is anticipated beginning Thursday and extending through the weekend. Those areas now sweating under the heat advisory may experience a dramatic swing, with temperatures dropping 10 to 15 degrees below average by Sunday.