Barometric Pressure Forecast for Rancho Palos Verdes, California
Barometric pressure forecast for Rancho Palos Verdes, California — on the coastal bluffs of the Palos Verdes Peninsula in Los Angeles County. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Rancho Palos Verdes
Rancho Palos Verdes occupies the seaward slopes of the Palos Verdes Peninsula, a block of uplifted marine terraces that rises to nearly 1,500 feet at San Pedro Hill and falls in cliffs to the Pacific, projecting into the ocean south of the Los Angeles basin. Sitting on a headland with water on three sides gives it a genuinely different climate from the basin a few miles inland. The marine layer arrives here first and burns off last, so late spring and early summer mornings stay grey long after inland Torrance has cleared, and summer afternoons run ten or fifteen degrees below the San Fernando Valley. The barometer is quiet for most of the year, with the eastern Pacific High holding steady high readings from May into October. The exceptions are worth knowing. Winter storms arriving from the northwest, and the atmospheric rivers among them, produce falls of fifteen to twenty-five hPa and drop rain on steep already unstable ground, and the Portuguese Bend landslide complex along this coastline has been moving for seventy years and accelerates in wet winters. Santa Ana events do the opposite: high pressure building over the Great Basin drives hot dry offshore wind down through the passes, reversing the normal flow, bringing single-digit humidity, elevated fire risk and a rise rather than a fall.
What this means for you
The two conditions that stand out here, winter storms and Santa Ana wind, move the barometer in opposite directions. Reading current barometric pressure together with wind direction tells them apart immediately.