SLO County forecast for week of May 7: Catalina eddy may bring a change in weather

Here is this week’s weather forecast by PG&E meteorologist John Lindsey.

High pressure is expected to build over the Central Coast on Monday into Tuesday, which will produce fair and warmer weather with temperatures about 5 and 10 degrees above-normal across the North County. Closer to the coast, typical night and morning low clouds and fog with pockets of mist are forecast to clear by Monday afternoon, with the fresh to strong (19- to 31-mph) northwesterly winds. High temperatures will range between the high 80s and low 90s in the inland valleys, mid- to high 70s for coastal valleys and upper 50s to low 60s near the immediate coast. Overall, little change in this pattern is expected through Tuesday.

A cold front is forecast to move through the Central Coast on Wednesday morning, with increasing clouds and drizzle, followed by strong to gale-force (25- to 38-mph) northwesterly winds and mostly clear skies on Wednesday afternoon into Friday morning.

A Catalina eddy is forecast to develop in the Southern California Bight later on Friday into Sunday. If this condition develops as advertised, gentle to moderate (8- to 18-mph) southerly winds and extensive coastal stratus with areas of mist and drizzle, especially along the southerly facing beaches, will develop along the Central Coast. At this time, no early season heatwaves are expected.

Surf report

A 3- to 5-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 7-second period) is forecast along the San Luis Obispo County coastline through Wednesday morning.

A 5- to 7-foot northwesterly (305-degree, deep-water) sea and swell (with a 5- to 11-second period) is forecast to arrive along our coastline Wednesday afternoon and night, increasing to 7 to 9 feet (with a 5- to 11-second period) on Thursday. An 8- to 10-foot northwesterly (300-degree, deep-water) swell (with an 8- to 17-second period) is forecast along our coastline on Friday into Saturday, decreasing Sunday.

Seawater temperatures will range between 49 and 52 degrees through Sunday.

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At PG&E, the safety of customers and employees is a top priority. Always remember, consider downed power lines still active. Stay away from the lines and keep others away from them. Call 911 immediately to report the location of a downed line. After reporting the downed line, call PG&E’s Residential Customer Service Center at 1-800-743-5000.

This story was originally published May 6, 2018 at 7:50 PM with the headline "SLO County forecast for week of May 7: Catalina eddy may bring a change in weather."