Southern California is bracing for a heatwave that's expected to push temperatures into triple digits, particularly in the Coachella Valley where highs could soar close to 110F. The National Weather Service (NWS) San Diego has issued a forecast that includes a "major risk" HeatRisk for the lower deserts from Tuesday onwards, with areas in the inland valleys and deserts facing a "moderate to major heat risk" through Thursday.
For those hoping to find a reprieve at the coast, morning low clouds will accompany near-average temperatures through Monday, but relief is short-lived. The subtropical ridge from the desert southwest is anticipated to strengthen, pushing inland temperatures higher as the week progresses, according to the NWS San Diego's Area Forecast Discussion. By Wednesday, inland areas, including the Inland Empire, may confront temperatures surpassing 100°F, with the Coachella Valley on the verge of a blistering 120°F mark.
At the turn of the afternoon, west winds are forecasted to become quite gusty daily. This is especially true through the San Gorgonio Pass, where the tight pressure gradient and sea breeze are reacting to a thermal low forming over the lower deserts. Meanwhile, the marine layer is predicted to stay "rather persistent," blanketing most inland valleys and a portion of the Inland Empire overnight.
While the desert winds might sound refreshing, they carry a disruptive potential for the coastal realms. Visibility restrictions can be expected due to potential foggy conditions that the marine layer rolling in might bring, adding complexity to both land and sea travel. The NWS Area Forecast also mentions slight visibility concerns due to lingering fireworks smoke, particularly in Orange County and the western Inland Empire.
Ocean-goers are also advised to exercise caution as a Beach Hazards Statement remains in effect through Sunday evening. A southerly swell creates surf reaching 4-6 ft, with sets possibly hitting 7 ft on south-facing beaches. This results in "strong rip and longshore currents at all beaches," as stated by the NWS San Diego. For those seeking to avoid the heat by hitting the waves, stay vigilant and consider the beach conditions before diving in.
In the mountains and deserts, however, the outlook is sunny, with mostly unrestricted visibility through Saturday night. And for marine enthusiasts, no hazardous conditions are anticipated through Wednesday, granting some solace amidst this burst of midsummer heat.
