SLO County weather forecast for the week of May 20

pgeweather@pge.comMay 19, 2013 

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

Weather report

A high-pressure ridge will build across the Central Coast today for fair and warmer weather. Temperatures will warm to the low to middle 90s in the North County and low 80s in the coastal valleys. Temperatures at the beaches will reach the low to mid-60s along the northwesterly facing beaches (Morro Bay, Los Osos, Montaña De Oro and the Nipomo Mesa); the high 60s along the westerly facing beaches (Pismo Beach and Cambria); and the low 70s along the southwesterly facing beaches (Cayucos, Avila and Shell beaches).

The marine layer will develop along the coastline tonight and move inland by Tuesday morning as an area of low pressure strengthens along the West Coast. This condition will lead to moderate gale- to fresh gale-force (32- to 46-mph) northwesterly winds along the coastline and cooler weather Tuesday afternoon into Thursday. Decreasing northwesterly winds and warmer weather is expected to return Friday.

Night and morning low clouds and fog, moderate to fresh (13- to 24-mph) northwesterly winds along the coast and warmer inland temperatures are forecast over the Memorial Day holiday weekend.

Surf report

Today’s 5- to 7-foot northwesterly (310-degree deep-water) sea and swell (with a 7- to 11-second period) will remain at this height and period through Tuesday morning.

Moderate gale- to fresh gale-force (32- to 46-mph) northwesterly winds will generate a 9- to 11-foot northwesterly (320-degree deep-water) sea and swell (with a 5- to 10-second period) along our coastline Tuesday afternoon through Thursday.

This northwesterly (320-degree deep-water) sea and swell will decrease to 6 to 8 feet Friday, further lowering to 4 to 6 feet (with a 5- to 12-second period) Saturday and Sunday,

Arriving from the Southern Hemisphere:

A 2- to 3-foot Southern Hemisphere (205-degree deep-water) swell (with a 15- to 17-second period) is expected along our coastline today into Tuesday, gradually decreasing Wednesday.

Seawater temperatures

Seawater temperatures will range between 50 and 53 degrees through Tuesday, decreasing to 49 and 52 degrees Wednesday through Sunday.

John Lindsey’s Weekly Forecast is special to The Tribune. His Weather Watch column appears in the Local section on Sundays. Email him at pgeweather@pge.com.

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