Residents across the Southwest states, brace yourselves for a scorching end to the week. The National Weather Service in San Diego has indicated that high pressure will maintain the warming trend, with the peak heat expected on Thursday and Friday. During this period, inland areas should prepare to experience highs ranging from 3 to 10 degrees above their daily norms. Coastal zones won't be spared either, and temperatures are predicted to be below average. NWS San Diego urges locals to stay hydrated and find ways to keep cool as the mercury climbs.
As if the heat wasn't enough, monsoonal moisture is returning, set to make its presence known later in the week. Thursday might offer a chance of showers and thunderstorms over the mountains and the high desert region, a trend expected to spread over the weekend into the early part of next week. This influx of moisture is closely associated with increased chances of afternoon and early evening showers and thunderstorms, most prominently in the mountains and deserts, beginning Friday and persisting into next week, as per the Area Forecast Discussion from NWS San Diego.
The temperatures should have slightly declined by Saturday, but they are still slated to be above normal. And for those eagerly awaiting a respite from the heat, there’s good news on the horizon. A gradual cooling trend is expected, with temperatures forecasted to return to average by next Tuesday. Despite the promise of cooler days, the threat of monsoonal thunderstorms and showers, mainly over the mountains and deserts, will persist, albeit with gradually diminishing chances into the middle of the next week.
While the inland regions bake under the sun, those near the coast could enjoy a marine layer, approximately 1200 feet deep, that brings night and morning low clouds and fog. Furthermore, the marine outlook for the immediate future seems benign, with no hazardous conditions anticipated through the weekend. For those skies above, after the morning fog dissipates, VFR, or visual flight rules conditions, are expected to dominate, accented by high clouds at around 15,000 to 20,000 feet. Whether you find yourself on land or sea, the weather's fluctuations are set to make these upcoming days memorable.
The NWS has put in place Extreme Heat Warnings and Heat Advisories for many inland regions from today through Saturday, underscoring the severity of this heat event. Specifically, there is high potential for record-breaking warmth, particularly concerning overnight low temperature records in the mountains on Thursday and Friday. "Chances for Palms Springs to tie or set new daily records for warmest overnight low temperatures are greater for Friday through Sunday," as the chances are greatest on Saturday with an 83 percent chance of tying or exceeding the current record of 86 degrees, signaling an exceptionally warm night ahead.
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