Ocean / Surf Report

Pismo Beach

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

6/21/2017

SEA/SWELL:

    Today's 6- to 8-foot northwesterly (315-degree, deep-water)
    sea and swell (with a 7- to 11-second period) is forecast
    along our coastline through tonight, becoming a 5- to 7-
    foot northwesterly (300-degree, deep-water) swell (with
    an 8- to 11-second period) along our coastline Thursday,
    decreasing to 4 to 6 feet by Friday.

    A 4- to 5-foot northwesterly (310-degree, deep-water)
    sea and swell (with a 5- to 11-second period) is 
    expected along our coastline Saturday into Monday.

    Arriving from the Southern Hemisphere:

    Today's 1- to 3-foot Southern Hemisphere (220-degree,
    deep-water) swell (with a 15- to 17-second period)
    will remain at this height but with a gradually
    shorter period through Friday.
    
  ATMOSPHERIC CONDITION:

    A deepening marine layer with areas of fog and mist
    covers the beaches and coastal valleys this morning.

    Stratus clouds with cooler air from the Pacific is
    also filtering into the North County by way of the
    Salinas Valley resulting in colder overnight 
    temperatures. In fact, Paso Robles is 10 degrees
    cooler at 5 a.m. than the same time on Tuesday. 

    The coastal stratus will clear from the North County
    and coastal valleys later this morning, but like
    yesterday, will persist along the most of the beaches
    for most of the day. The coastal valleys will range
    from the mid to high 70s, while the beaches will 
    range between the high 50s and mid 60s.

    Away from the coastal regions, the inland valleys
    will range between the high 90s the low 100s. Further
    inland, Bakersfield is forecast to hit 112 degrees
    today. Phoenix, Arizona could reach 118. 

    Overall, little change in temperatures is expected
    through Sunday. However, strong to gale-force (25 to
    38 mph) afternoon northwesterly winds on Saturday
    into Tuesday will produce much greater amounts of
    clearing along the coastline as the temperature
    inversion layer is mixed out.  

    Note: Offshore flow in Northern California is
          forecast to strengthen Thursday leading to
          very hot conditions throughout Sacramento
          Valley. Red Bluff and Redding could reach 
          115 degrees today and Thursday, while
          Sacramento could hit 110. 

    Cooler weather is expected next week with generally
    seasonable or even slightly cooler than normal
    temperatures as the high pressure ridge responsible
    the hot inland weather breaks down.

   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
        52.3°   55.7°      52.9°   59.0°      53.0°    59.0°       

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

    Inland Temperatures, Paso Robles 
 
     Actual                 Predicted
   
      Tue      Wed    Thu   Fri    Sat    Sun    Mon    Tue
     63 105   54 99  58 99 57 97  58 101 58 102 57 99  54 95                      
                                       
    Coastal Valleys Temperatures, San Luis Obispo
    
      Tue      Wed    Thu   Fri    Sat    Sun    Mon    Tue    
     56 83    57 74  55 81 58 80  58 82  56 80  55 78  54 78                      
    
  WINDS:    

    Fresh to strong (19 to 31 mph) northwesterly winds are
    forecast this afternoon.

    Gentle to moderate (8 to 18 mph) southwesterly winds are 
    forecast Thursday into Friday.

    Strong to gale-force (25 to 38 mph) afternoon northwesterly
    winds are forecast on Saturday into Tuesday. 

  DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:

       Today's Maximum Winds:
  
        Max peak winds:       NW             11.5 mph @  7:15 a.m.
        Max sustained wind:   NW             10.1 mph @  7:15 a.m.

      Yesterday's Maximum Winds:
            
        Max peak winds:       NW             34.7 mph @  7:00 p.m.
        Max sustained wind:   NW             24.5 mph @  6:30 p.m.
 
  SEAWATER TEMPERATURES:

    Seawater temperatures will range between 50 and 53 degrees
    through Monday. 

  OCEAN CURRENTS:

    Today's southerly (offshore) flowing current will continue to 
    flow southward into Monday. 

  SEAWATER VISIBILITY:
 
    Seawater visibility was 4 to 6 feet (plankton bloom) at the
    Diablo Canyon Intake.

==========================================================================
 24-Hour Ocean Condition Outlook for Wednesday 06/21 to Thursday 06/22

  SEA/SWELL:        DIR. NW    HT.  6-8   PER.  6-11    This morning  
  Increasing to:    DIR. NW    HT.  6-8   PER.  7-11    This afternoon
  Remaining  at:    DIR. NW    HT.  6-8   PER.  7-11    Tonight

 (Combined with:    DIR. SSW   HT.  1-3   PER. 15-17    All day) 

  WINDS:            DIR. NW    SPEED 10-15              This morning
  Increasing to:    DIR. NW    SPEED 20-25 + 30         This afternoon
  Decreasing to:    DIR. NW    SPEED 15-20              Tonight
==========================================================================
 48-Hour Ocean Condition Outlook for Thursday 06/22 to Friday 06/23
    
  SWELL:            DIR. NW    HT.  5-7   PER.  8-11    Thursday morning  
  Remaining  at:    DIR. NW    HT.  5-7   PER.  8-11    Thursday afternoon
  Remaining  at:    DIR. NW    HT.  5-7   PER.  8-11    Thursday night

 (Combined with:    DIR. SSW   HT.  1-3   PER. 14-16    All day Thursday)

  WINDS:            DIR. SE    SPEED  5-10              Thursday morning
  Increasing to:    DIR. WSW   SPEED 10-15              Thursday afternoon
  Decreasing to:    DIR. SE    SPEED  5-10              Thursday night
===========================================================================

 Extended Ocean Condition Outlook: 
    
    Strong to gale-force (25 to 38 mph) afternoon northwesterly
    winds are forecast on Saturday into Tuesday. 

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

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