Here is this week’s weather forecast by PG&E meteorologist John Lindsey.
An upper-level trough of low pressure is expected to remain parked off the coast and will produce strong to gale-force (25- to 38-mph) afternoon northwesterly winds along the shoreline, slightly below-normal seasonal temperatures and typical morning marine low clouds and fog along the coast and in the coastal valleys throughout San Luis Obispo and Santa Barbara counties.
Today’s maximum temperatures are expected to reach the low 90s in Paso Robles, while San Luis Obispo will reach the high 70s. High temperatures along the beaches will range from the mid-60s along the northwesterly facing beaches of Morro Bay, Los Osos, Montaña de Oro and Nipomo, and the high 60s along the westerly facing beaches of Cambria, Grover Beach and Pismo Beach. The southwesterly facing beaches of Cayucos and Avila Beach will be in the 70s.
The low-pressure system is forecast to move toward the northeast Wednesday, which would result in decreasing northwesterly winds and a deeper and more persistent marine layer with areas of drizzle along the beaches.
The longer-range models and charts are indicating that an upper-level low-pressure system will drop southward out of British Columbia on Friday. This system is expected to draw subtropical moisture northward from the remnants of Hurricane Dolores starting late Saturday. If the models verify, mostly cloudy skies with scattered rain showers and a chance of thunderstorms could start Saturday night and continue into next Tuesday. Overnight conditions could be warm and muggy over this time frame.
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The National Oceanic and Atmospheric Administration’s models are indicating heavier rainfall amounts, but details remain unclear at this time.
Monday’s surf report
Increasing northwesterly winds are expected to generate a 3- to 5-foot northwesterly (310-degree, deep-water) sea and swell (with a 4- to 11-second period) this afternoon, building to 4 to 6 feet (with a 5- to 9-second period) Tuesday into Wednesday.
A 3- to 5-foot northwesterly (290-degree, deep-water) swell (with an 8- to 15-second period) is expected to arrive along our coastline Thursday and remain at this height and period through Saturday.
Arriving from the south: Hurricane Dolores off the Baja Peninsula is forecast to move northwestward enough to produce some medium-period southerly swell along our coastline starting Sunday into next Tuesday.
Seawater temperatures are expected to range between 54 and 57 degrees through Wednesday, increasing to 56 and 60 degrees Thursday into Friday. Seawater temperatures will further rise to 57 to 62 degrees Saturday into next week.
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At PG&E, your safety is our first concern. If your vehicle comes in contact with a downed power line, stay inside. The safest place is in your car; the ground around your car may be energized. Warn others to stay away. Anyone who touches the equipment or ground around the vehicle may be injured. Call 911 as soon as possible.