Ocean / Surf Report

Pismo Beach

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

5/25/2017

 SEA/SWELL:

    Today's 3- to 5-foot northwesterly (305-degree, deep-water)
    swell (with an 8- to 13-second period) will decrease
    to 2 to 4 feet (with an 8- to 10-second period) on Friday
    into Saturday morning.

    Strong to gale-force (25 to 38 mph) northwesterly winds
    will generate a 3- to 5-foot northwesterly (310-degree,
    deep-water) sea and swell (with a 4- to 9-second period)
    Saturday afternoon, increasing to 4 to 6 feet (with a 4-
    to 6-second period) on Sunday. This northwesterly sea and
    swell will further build to 5 to 7 feet (with a 5- to 11-
    second period) on Monday into Tuesday.

    Arriving from the Southern Hemisphere:  

    A 1- to 2-foot Southern Hemisphere (190-degree, deep
    -water) swell (with a 15- to 17-second period) is forecast 
    along our coastline on Sunday into Monday. 
    
  ATMOSPHERIC CONDITION:

    1,008 millibar low pressure system centered about 50 miles
    to the west of San Luis Obispo will remain nearly stationary
    through Friday. This system will produce gentle to moderate
    (8 to 18 mph) southerly winds along the coastline and a deep 
    marine layer. In fact, it covers the entire Central
    Coast this morning with areas of mist and drizzle along
    the beaches and coastal valleys.

    The low clouds will clear back to the coastal regions by
    noon leaving behind partly cloudy skies and seasonably
    cool temperatures. The beaches will remain overcast for
    most of the day. 

    Today's high temperatures will range between low to high
    60s in the North County, coastal valleys and along the
    beaches. 

    Not much change in the weather is forecast for Friday with
    extensive morning overcast slowly clearing to mostly sunny
    skies and continued seasonably cool temperatures for May.

    High pressure will strengthen over California this upcoming
    Memorial Day weekend. This condition is expected to produce
    strong to gale-force (25 to 38 mph) northwesterly winds,
    warmer conditions and mostly clear skies as the marine layer
    is mixed out of atmosphere.

    Marine low clouds and cooler weather is forecast to retune 
    by next Thursday into the following weekend as another
    trough of low pressure develops along the West Coast. 

   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
        49.6°   58.1°      51.3°   60.0°      52.0°    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
       51 82    52 66   50 68   46 79  49 89  56 92  57 96  55 90 
                                       
    Coastal Valleys Temperatures, San Luis Obispo
      
        Wed      Thu     Fri     Sat    Sun    Mon    Tue    Wed
       53 72    57 64   51 64   49 69  51 76  54 77  54 80  53 75 
    
  WINDS:

    A pattern of gentle to moderate (8 to 18 mph) west-
    southwesterly winds developing during the afternoon hours,
    decreasing during the night and morning hours will continue
    through Saturday morning. 

    A pattern of strong to gale-force (25 to 38 mph) northwesterly
    winds developing during the afternoon hours, decreasing during 
    the night and morning hours will start Saturday afternoon and 
    will continue into Wednesday.

  DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:

       Today's Maximum Winds:

        Max peak winds:       SE             11.7 mph @  7:30 a.m.
        Max sustained wind:   SE              9.9 mph @  7:30 a.m.

      Yesterday's Maximum Winds:
            
        Max peak winds:       NW             24.5 mph @  1:45 p.m.
        Max sustained wind:   NW             19.4 mph @  1:45 p.m.
 
  SEAWATER TEMPERATURES:

   Seawater temperatures will range between 49 and 52 degrees
   through tonight. Seawater temperatures will increase to 50 and
   53 degrees on Friday into Monday. 

  OCEAN CURRENTS:

    Today's northerly (onshore) flowing current will continue to 
    flow northward into Saturday morning, becoming a southerly
    (offshore) flowing current on Saturday afternoon into Monday.

  SEAWATER VISIBILITY:
 
    Seawater visibility was 30 to 32 feet at the Diablo Canyon Intake.

==========================================================================
 24-Hour Ocean Condition Outlook for Thursday 05/25 to Friday 05/26
    
  SWELL:            DIR. NW    HT.  3-5   PER.  8-13    This morning  
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-13    This afternoon
  Remaining  at:    DIR. NW    HT.  3-5   PER.  8-12    Tonight

  WINDS:            DIR. SE    SPEED  5-10              This morning
  Increasing to:    DIR. WSW   SPEED 15-20              This afternoon
  Decreasing to:    DIR. SW    SPEED  5-10              Tonight
==========================================================================
 48-Hour Ocean Condition Outlook for Friday 05/26 to Saturday 05/27
    
  SWELL:            DIR. NW    HT.  2-4   PER.  8-11    Friday morning  
  Remaining  at:    DIR. NW    HT.  2-4   PER.  8-10    Friday afternoon
  Remaining  at:    DIR. NW    HT.  2-4   PER.  8-10    Friday night

  WINDS:            DIR. SE    SPEED  5-10              Friday morning
  Increasing to:    DIR. WSW   SPEED 15-20              Friday afternoon
  Decreasing to:    DIR. SW    SPEED  5-10              Friday night
===========================================================================

 Extended Ocean Condition Outlook:
   
    A pattern of strong to gale-force (25 to 38 mph) northwesterly
    winds developing during the afternoon hours, decreasing during 
    the night and morning hours will start Saturday afternoon and 
    will continue into Wednesday.

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

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