Residents of San Diego and surrounding areas can expect a swift change in weather conditions over the next few days, with temperatures set to fluctuate and winds to pick up across several counties. According to the National Weather Service in San Diego, temperatures today inland will be 7-15 degrees above normal, giving the region a surge of warmth before an anticipated cool down.
The forecast indicates a cooler climate west of the mountains, set for Friday, with minor warming through the desert regions. This creates a brief respite from the high temperatures earlier this week. An upper-level trough of low pressure is expected to sweep through the area on Saturday, bringing highs back down to near-normal figures across the region. Onshore flow makes its return late tonight "as the upper ridge moves inland and an upper level trough approaches the West Coast," according to an Area Forecast Discussion by NWS San Diego, the marine layer will also deepen, which means low clouds are likely to sprawl into the western valleys come Friday night.
However, the weather won't remain cool for long. Conditions are forecasted to take a turn by Saturday afternoon, with weak offshore flow poised to bring temperatures above the norm as early as Sunday and into the start of next week. As for the marine conditions, the NWS advises on the potential for patchy dense fog this morning, but no severe marine warnings are expected through Monday, which should relieve mariners.
Looking further ahead, the weather outlook becomes noticeably less predictable. Ensembles are split on the trajectory of an upper-level trough that could impact the region from Tuesday, potentially leading to cooler weather and stronger Santa Ana winds in the middle of the following week depending on its path. "An inside slider may bring cooler weather with stronger Santa Ana Winds towards the middle part of next week," the NWS San Diego mentions, this suggests that residents in the affected areas should prepare for a potential uptick in wind-related incidents and cooler temperatures during that time frame.
No Skywarn activation has been requested yet, but weather spotters are still encouraged by the NWS to report any significant conditions as they occur. For now, locals may enjoy, or endure, the see-saw of climatic change that Southern California is often known for.
