Here is this week’s weather forecast by PG&E meteorologist John Lindsey:
Monday morning’s coastal low clouds with areas of mist are expected to clear from the coastal valleys and beaches by Monday afternoon.
A high-pressure ridge will build over the Central Coast, producing hot inland temperatures. Indeed, Paso Robles may reach 100 degrees. Maximum temperatures in the coastal valleys will reach the low 80s, while gentle to moderate (8- to 18-mph) northwesterly winds will keep the beaches in the 60s.
The weather pattern will change Tuesday into Wednesday as an upper-level low-pressure system draws tropical moisture from the remnants of Hurricane Blanca northward into the Central Coast. This pattern will bring increasing mid- to high-level clouds and cooler temperatures to the North County and coastal valleys, along with a chance of widely scattered sprinkles or rain showers. Unfortunately, most of the precipitation will fall as virga (rain that evaporates before reaching the ground).
Rain showers and thunderstorms with lightning activity are expected to develop in the Sierra Nevada and perhaps in the Tehachapi Mountains into Wednesday.
Forecasts show high pressure beginning to build back over the Central Coast on Thursday, as the upper-level low exits to the east. This condition will create fresh to strong (19- to 31-mph) northwesterly winds and plenty of night and morning marine low clouds with pockets of mist and drizzle. North County temperatures will gradually warm to the high 80s by Friday.
For the rest of San Luis Obispo County, persistent onshore flow and extensive coastal stratus clouds will keep temperatures mild. The longer-range models suggest a slight cool down toward the following week with the formation of an another upper-level low-pressure trough.
Monday's surf report
Monday’s long-range charts are showing relatively calm conditions in the Northern and Southern Hemispheres.
Monday’s 3- to 5-foot northwesterly (310-degree, deep-water) swell (with an 8- to 12-second period) will remain at this height and period through Saturday.
Arriving from the Southern Hemisphere: Monday’s 2- to 3-foot Southern Hemisphere (195-degree, deep-water) swell (with a 17- to 19-second period) will remain at this height but with the gradually shorter period Tuesday into Wednesday.
Former Hurricane Blanca is expected to continue on its northward path toward Cabo San Lucas, Baja California. Swell from this storm will not reach our coastline.
Seawater temperatures will range between 52 and 56 degrees through Monday night. Seawater temperatures will gradually increase Tuesday into Thursday. In fact, by Thursday, they’re expected to range between 53 and 57 degrees. • • •
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. And call 911.