Pismo Beach Ocean & Surf Report

Diablo Canyon Power Plant - Ocean/Surf Report for 11/20/2014

Arriving from the Northwest:
This morning's 6- to 8-foot westerly (270-degree, deep-water) swell (with an 11- to 13-second period) will decrease to 5 to 7 feet by tonight.

A 6- to 8-foot northwesterly (295-degree, deep-water) sea and swell (with a 5- to 12-second period) is forecast along our coastline Friday.

A 949 millibar storm in the Gulf of Alaska with hurricane force winds will produce a 5- to 7-foot northwesterly (300-degree, deep-water) swell (with a 16- to 18-second period) Saturday, building to 8 to 10 feet with a 15- to 17-second period) Sunday. This swell will decrease to 6 to 8 feet (with a 12- to 14-second period) Monday, further lowering to 5 to 7 feet (with an 11- to 14-second period) by Tuesday and 3 to 5 feet (with an 11- to 13-second period) Wednesday into next Thursday.

Today's longer-range models and charts are indicating a large storm developing about 600 miles directly west of San Luis Obispo County on Thanksgiving day. If the storm develops as advertised, a large west-southwesterly swell could arrive along our coastline November 28 and 29. Our team will watch this situation closely and post any changes.

Arriving from the South
None to report.

A strong northerly flowing current has produced abnormally warm seawater temperatures along our coastline.

Intake seawater temperatures will range between 61 and 64 degrees through Saturday, decreasing to 61 and 63 degrees on Sunday. Seawater temperatures should further decrease on Monday into Wednesday.

Seawater visibility was 4 to 6 feet at the Diablo Canyon Intake.

DIR. NW HT. 5-7 PER. 10-12 Friday morning
Increasing to: DIR. NW HT. 6-8 PER. 5-12 Friday afternoon
Remaining at: DIR. NW HT. 6-8 PER. 5-12 Friday night

DIR. NE SPEED 5-10 Friday morning
Increasing to: DIR. NW SPEED 20-25 + 30 Friday afternoon
Decreasing to: DIR. NE SPEED 5-10 Friday night

Fresh to strong (19- to 31-mph) Santa Lucia (offshore) winds are forecast Sunday night into Tuesday.