Today’s 6- to 8-foot northwesterly (290-degree, deep-
water) sea and swell (with a 5- to 13-second period)
will decrease to 5 to 7 feet (with a 7- to 11-second
period) on Tuesday into Wednesday.
A 9- to 11-foot northwesterly (310-degree, deep-water)
sea and swell (with a 5- to 12-second period) is
forecast along our coastline on Thursday into Friday.
A 4- to 6-foot northwesterly (310-degree, deep-
water) sea and swell (with a 7- to 11-second period)
is forecast along our coastline on Saturday into next
Arriving from the Southern Hemisphere:
A 1-foot Southern Hemisphere (190-degree, deep-water)
swell (with a 17- to 19-second period) will arrive
later on Tuesday, building to 1 to 2 feet (with a 15-
to 17-second period) on Wednesday into Thursday.
The most appropriate way to describe this week’s weather
A 1,029-millibar area of high pressure about 500 miles
to the west of the Central Coast is expected to remain
nearly stationary into Wednesday. This condition will
produce strong to gale-force (25 to 38 mph) northwesterly
winds during the afternoon hours today into Wednesday.
These onshore winds will produce mild temperatures with
the beaches reaching the 60s, except for the southwest-
facing beaches of Cayucos and Avila Beach, which will
hit the mid-70s. The coastal valleys and North County
will warm to the low- to mid 70s. Variable high-level
clouds will pass from time to time, while a few areas
of low clouds and fog are expected to develop along the
coastline during the overnight hours.
A dry cold front will move through the Central Coast on
Wednesday night with partly cloudy skies. More importantly,
it will produce a steep pressure gradient along the
California coastline, resulting in moderate gale-force
to fresh gale-force (32 to 46 mph, with gusts to 55 mph)
northwesterly winds Thursday into Friday. Windy indeed!
This area of high pressure is expected to strengthen and
move eastward over California. Consequently, gusty Santa
Lucia (offshore) winds and warmer weather will develop
throughout the Central Coast this weekend, with daytime
highs reaching into the 80s. At this time, it’s looking
like it will be dry for an extended period along the
Weather graphics and power outage information are available
Yesterday's Today's Tomorrow's
Min Max Min Max Min Max
51.8° 59.2° 51.3° 61.0° 52.0° 61.0
PG&E Weather Office in San Francisco predicted temperatures
for San Luis Obispo County
Inland Temperatures, Paso Robles
Sun Mon Tue Wed Thu Fri Sat Sun
49 77 48 71 49 75 45 84 53 77 43 75 40 82 42 88
Coastal Valleys Temperatures, San Luis Obispo
Sun Mon Tue Wed Thu Fri Sat Sun
52 72 51 71 51 70 51 77 52 72 46 72 43 80 47 80
A pattern of strong to gale-force (25 to 38 mph with gust
to 45 mph) northwesterly winds developing during the afternoon
hours, decreasing during the night and morning hours will
continue through Wednesday.
Moderate gale-force to fresh gale-force (32 to 46 mph with
gust 55 mph) northwesterly winds are forecast to develop on
Thursday into Friday.
DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:
Today's Maximum Winds:
Max peak winds: NW 24.6 mph @ 6:45 a.m.
Max sustained wind: NW 20.1 mph @ 6:45 a.m.
Yesterday's Maximum Winds:
Max peak winds: NW 49.2 mph @ 5:15 p.m.
Max sustained wind: NW 35.8 mph @ 4:45 p.m.
Seawater temperatures will range between 47 and 49 degrees
Today's southerly (offshore) flowing current will continue
to flow southward through Saturday.
Seawater visibility was 12 to 14 feet at the Diablo Canyon Intake.
24-Hour Ocean Condition Outlook for Monday 04/24 to Tuesday 04/25
SEA/SWELL: DIR. NW HT. 6-8 PER. 5-13 This morning
Decreasing to: DIR. NW HT. 6-8 PER. 5-13 This afternoon
Remaining at: DIR. NW HT. 6-8 PER. 5-12 Tonight
WINDS: DIR. NW SPEED 15-20 + 25 This morning
Increasing to: DIR. NW SPEED 25-30 + 45 This afternoon
Decreasing to: DIR. NW SPEED 15-20 + 25 Tonight
48-Hour Ocean Condition Outlook for Tuesday 04/25 to Wednesday 04/26
SEA/SWELL: DIR. NW HT. 5-7 PER. 5-12 Tuesday morning
Remaining at: DIR. NW HT. 5-7 PER. 5-11 Tuesday afternoon
Remaining at: DIR. NW HT. 5-7 PER. 5-11 Tuesday night
(Combined with: DIR. SW HT. 1 PER. 17-19 Tuesday night)
WINDS: DIR. NW SPEED 15-20 + 25 Tuesday morning
Increasing to: DIR. NW SPEED 25-30 + 45 Tuesday afternoon
Decreasing to: DIR. NW SPEED 15-20 + 25 Tuesday night
Extended Ocean Condition Outlook:
Moderate gale-force to fresh gale-force (32 to 46 mph with gust
55 mph) northwesterly winds are forecast to develop on Thursday