As the thermometer relentlessly climbs, the National Weather Service San Diego predicts an ongoing warming trend through Thursday, August 7, bringing temperatures "5 to 10 degrees above average for inland areas." Sweltering conditions will subside from Friday through Saturday, followed by a steady plateau expected well into next week. While coastal fog creeps back into the night, Western valleys will only feel a slight reprieve from the toasty veil drawn across Southern California, as per the National Weather Service.
As cited by the National Weather Service San Diego, the upcoming heatwave pushes the needle to the upper extremes. Thursday's forecast looks like the pinnacle of this hot spell, with the inland valleys boiling up to 103 degrees, and the low desert potentially marking the sheets with a scorching 118 degrees. Those living in these areas must note the "widespread moderate HeatRisk," particularly as it elevates to "major HeatRisk" for the low desert dwellers looking to cool down amidst the mid-summer cauldron.
The sun is beating harder than usual, and specific locations are potentially expected to break previous heat records. The National Weather Service noted, "High temperatures on Thursday could be near or exceed records for the date for Palm Springs, Indio, Thermal and Borrego Springs." Palm Springs is looking at an "87 percent chance for the high temperature to tie or exceed the existing record of 116," with a significant chance to surpass that marker. Adjusting to these conditions, wildfire smoke from nearby blazes adds to the atmospheric density, keeping the skies in a perpetual state of haziness and health concern.
Amidst this baking landscape, the marine layer, apparently determined to split the dominion of the high-pressure system, is to deepen "to around 1200 to 1500 feet for Thursday night into Friday," allowing coastal clouds to march a bit more inland. This small mercy offers a sliver of respite in the form of cooler nights and mornings before the day's heat promptly resumes its charge. Coastal mariners are, however, going to have smooth sailing with no hazardous marine conditions expected through Sunday, a brief reassurance in the face of the sun's insistent blare, per the NWS San Diego.
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