Here is this week’s weather forecast by PG&E meteorologist John Lindsey.
Low pressure will track eastward through Tuesday and will bring cooler conditions for the Central Coast along with fresh to strong (19 to 31 mph) northwesterly afternoon (onshore) winds along the coastline.
These winds will produce a greater amount of sunshine along the beaches during the afternoon hours and will also push much of the smoke from the fires burning throughout Central California toward the east. However, light to gentle variable winds during the night and morning hours will allow varying amounts of smoke to move over the coastal regions. Further inland, moderate to fresh (13 to 24 mph) south to southwesterly winds will develop during the afternoon and evening hours, decreasing during the overnight hours. Afternoon thunderstorm development will also respond to the passing low pressure system with widespread formation along the Sierra Nevada.
Monday’s maximum temperatures will range from the low 90s in Paso Robles to the mid 70s in the coastal valleys. The beaches will range between the high 50s to the low 60s. The exception will be Cayucos, Avila Beach and Shell Beach, which will reach the low 70s. Overall, very little change in this pattern is expected through Tuesday.
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A brief warm-up will develop Wednesday as high pressure will build over the West Coast, with temperatures returning to near-normal levels across the inland valleys. However, this condition will decrease the afternoon winds along the coastline — and also in the inland areas, helping firefighters. Otherwise, persistent onshore flow and night and morning low clouds with areas of fog and drizzle near the coast will continue to keep temperatures below-normal along the shoreline.
An area of low pressure is slated to meander off the coast, then move eastward Friday into Sunday. This system will produce gentle to moderate (8 to 18 mph) southerly winds along the coast and inland areas, a deeper and more persistent marine layer and below seasonal-normal temperatures throughout the Central Coast.
Today’s 3- to 5-foot northwesterly (310-degree, deep-water) sea and swell (with a 7- to 11-second period) will remain at this level through Monday morning. Fresh to strong (19 to 31 mph) northwesterly winds along our coastline will generate 3- to 5-foot northwesterly (320-degree, deep-water) sea and swell (with a 5- to 9- second period) starting Monday afternoon and will remain at this height and period into Wednesday, becoming a 3- to 4-foot northwesterly swell (with an 8- to 10-second period) Thursday into Saturday. This swell will further decrease to 2 to 3 feet next Sunday and Monday.
Today's 2- to 3-foot Southern Hemisphere (190-degree, deep-water) swell (with a 14- to 16-second period) will remain at this height but a gradually shorter period through Tuesday. Seawater temperatures are projected to range between 53 and 56 degrees through Friday.
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This week’s PG&E safety tip: One less spark, one less wildfire. Vehicles: 1) Never pull over in dry grass. 2) Ensure trailer chains don't drag on the ground. 3) Make sure your vehicle is properly maintained. 4) Have proper tire pressure to avoid driving on wheel rim. 5) Never let your brake pads wear too thin.
John Lindsey’s Weekly Forecast is special to The Tribune. He is PG&E’s Diablo Canyon Power Plant marine meteorologist and media relations representative. Contact him at firstname.lastname@example.org. Follow him on Twitter @PGE_John.
This week’s temperatures
LOWS AND HIGHS, PASO ROBLES
LOWS AND HIGHS, SLO AND COASTAL VALLEYS