Ocean / Surf Report

Pismo Beach

Get our updated surf/ocean report and weather report with data provided by the Diablo Canyon Weather Report.

8/17/2017

SEA/SWELL:

   A 3- to 5-foot northwesterly (300-degree, deep-water)
   swell (with an 8- to 15-second period) is forecast
   along the Central Coast this afternoon into Saturday. 

   A 4- to 6-foot northwesterly (300-degree, deep-water)
   swell (with an 8- to 14-second period) is forecast
   along our coastline on Sunday into Monday, decreasing to
   3 to 5 feet (with a 7- to 9-second period) Tuesday.

   Increasing northwesterly winds along the coastline
   will generate 4- to 6-foot northwesterly (310-degree,
   deep-water) sea and swell (with a 5- to 8-second period)
   on Wednesday into next Thursday. 

   Arriving from the Southern Hemisphere:

   Today's 1-to 2-foot Southern Hemisphere (175-degree,
   deep-water) swell (with a 14- to 16-second period)
   will remain at this level into Sunday.
   
  ATMOSPHERIC CONDITION:

   A classic August weather pattern with night and morning
   marine low clouds and fog in the coastal regions and
   afternoon thundershowers in the higher elevations of
   the Sierra Nevada will continue through next week.
   In other words, WYSIWYG (what you see is what you get)
   weather pattern. 

   The low-pressure system responsible for the below average
   temperatures has shifted out of the area while an area
   of high pressure builds into California. This condition 
   will produce a gradual warming trend through Saturday.  

   Paso Robles is forecast to reach the low 90s today.
   The coastal valleys will reach the high 70s, while
   the beaches will remain in the 60s.

   Temperatures will continue to warm to the high 90s
   in the North County and low 80s in the coastal valleys 
   by Friday and Saturday. The beaches will remain in the 60s
   with typical night and morning low clouds and fog. 

   A trough of low pressure is forecast to develop off the
   California coastline on Sunday into Tuesday that will lead
   slightly cooler temperatures and a deep and a persistent
   marine layer that will probably obscure the partial solar
   eclipse in the coastal regions of San Luis Obispo and
   Northern Santa Barbara counties on Monday morning.

   The North County should be clear by the peak of solar
   eclipse. The partial solar eclipse will begin at 9 a.m.,
   peaking at 10:15 a.m. and conclude at 11:40 a.m. At the
   peak, about 65 percent of the sun's energy will be blocked
   by the moon along the Central Coast, but please protect
   your eyes if you view it.

   High pressure may then rebuild by the end of next week into 
   the rest of August for increasing northwesterly (onshore)
   winds along the coastline and warmer inland temperatures.  

   Weather graphics and power outage information are available
   at: twitter.com/pge_john.

         Yesterday's          Today's           Tomorrow's
         Min    Max         Min    Max         Min     Max
        56.5°   60.1°      56.8°   62.0°      57.0°    60.0°       

    PG&E Weather Office in San Francisco predicted temperatures
    for San Luis Obispo County

    Inland Temperatures, Paso Robles 
 
     Actual                 Predicted
        
      Wed        Thu      Fri     Sat     Sun    Mon    Tue    Wed
     54 81      55 93    57 94   56 93   53 87  52 88  52 90  53 91                     
                                       
    Coastal Valleys Temperatures, San Luis Obispo

      Wed        Thu      Fri     Sat     Sun    Mon    Tue    Wed
     57 76      58 79    59 81   59 77   58 75  59 76  58 78  57 76                         
    
  WINDS:

    Gentle to moderate (8 to 18 mph) northwesterly winds will develop  
    this afternoon. 

    Moderate to fresh (13 to 24 mph) northwesterly winds are forecast 
    on Friday afternoon, then decreasing to gentle to moderate
    (8 to 18 mph) levels and shifting out of the west on Saturday into
    Tuesday.

    Increasing northwesterly winds are forecast on Wednesday into 
    next Friday.

  DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:

       Today's Maximum Winds:
    
        Max peak winds:       SE               7.0 mph @  7:15 a.m.
        Max sustained wind:   SE               4.4 mph @  7:15 a.m.

      Yesterday's Maximum Winds:
            
        Max peak winds:       NW              26.8 mph @  4:45 p.m.
        Max sustained wind:   NW              23.1 mph @  5:00 p.m.
 
  SEAWATER TEMPERATURES:

    Seawater temperatures will range between 52 and 55 degrees
    through Saturday, increasing to 54 and 57 degrees on Sunday
    into Tuesday.  

    Seawater temperatures will decrease on Wednesday into next 
    Thursday.

  OCEAN CURRENTS:

    A southerly (offshore) flowing current is forecast to continue
    to flow southward through Saturday, becoming a northerly (onshore)
    flowing current on Sunday into Tuesday. 

    A southerly (offshore) flowing current is forecast on Wednesday
    into next Thursday.

  SEAWATER VISIBILITY:
 
    Seawater visibility was 16 to 18 feet at the Diablo Canyon Intake.

==========================================================================
 24-Hour Ocean Condition Outlook for Thursday 08/17 to Friday 08/18
    
  SWELL:            DIR. NW    HT.  3-5   PER.  8-15    This morning  
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-15    This afternoon
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-15    Tonight

 (Combined with:    DIR. S     HT.  1-2   PER. 14-16    All day)

  WINDS:            DIR. SE    SPEED  5-10              This morning
  Increasing to:    DIR. NW    SPEED 10-15              This afternoon
  Decreasing to:    DIR. NW    SPEED  5-10              Tonight
==========================================================================
 48-Hour Ocean Condition Outlook for Friday 08/18 to Saturday 08/19
    
  SWELL:            DIR. NW    HT.  3-5   PER.  8-15    Friday morning  
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-14    Friday afternoon
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-14    Friday night

 (Combined with:    DIR. S     HT.  1-2   PER. 14-16    All day Friday) 

  WINDS:            DIR. SE    SPEED  5-10              Friday morning
  Increasing to:    DIR. NW    SPEED 15-20 + 25         Friday afternoon
  Decreasing to:    DIR. NW    SPEED  5-10              Friday night
===========================================================================

 Extended Ocean Condition Outlook:

  Increasing northwesterly winds are forecast on Wednesday into next
  Friday.

===========================================================================

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