Here is this week’s weather forecast by PG&E meteorologist John Lindsey.
The high-pressure ridge that brought record warm and dry weather will weaken and move westward over the Pacific. A low-pressure system will move southward through California today into Monday, with strong to gale-force (25 to 38 mph) northwesterly (onshore) winds and much cooler conditions with partly cloudy skies. In fact, Monday’s high temperatures will only reach the high 50s in the North County and low 60s in the coastal valleys and along the beaches.
An upper-level low-pressure system will follow and move over the Central Coast on Monday night into Tuesday, with gentle to moderate southerly winds, mostly cloudy skies and scattered rain showers. This system does not have a lot of moisture, so rainfall amounts will generally remain below a tenth of an inch. Snow levels will drop to 5,500 feet Monday and possibly down to 4,000 feet Tuesday.
High pressure will rebuild over the West Coast on Wednesday into Saturday for a pattern of gusty night and morning Santa Lucia (northeasterly) winds and fresh to strong (19 to 31 mph) northwesterly (onshore) winds during the afternoon hours. This condition will produce cold mornings and warm afternoons, with Paso Robles lowering to the mid- to high 20s overnight hours but warming to the mid-70s later in the day. The coastal valleys may reach the low 80s by Friday and Saturday. The next chance of rain is expected Feb. 19 and 20.
A 6- to 8-foot northwesterly (315-degree, deep-water) sea and swell (with a 5- to 14-second period) was expected to arrive along our coastline Sunday night and remain at this height and period into Monday.
A 5- to 7-foot northwesterly (300-degree, deep-water) swell (with an 11- to 17-second period) is forecast along our coastline Tuesday.
A 4- to 6-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 14-second period) will develop along our coastline Wednesday and will continue at this height into Saturday.
Seawater temperatures will range between 54 and 57 degrees through Friday.
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At PG&E, the safety of our customers and employees is our top priority. Rain showers combined with cold overnight temperatures in the inland valleys could cause black ice, sometimes called clear ice is a thin coating of ice on roads. It is practically invisible to drivers and can produce unexpected loss of traction.
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