Ocean / Surf Report

Pismo Beach

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

9/25/2017

SEA/SWELL:

    Today's 3- to 5-foot northwesterly (310-degree, deep-water)
    sea and swell (with a 7- to 11-second period) will continue
    at this level into Tuesday.

    A 2- to 4-foot northwesterly (300-degree, deep-water) swell
    (with an 8- to 11-second period) will develop along our
    coastline Wednesday into Friday morning.

    Increasing northwesterly winds Friday afternoon into next
    Monday will generate a 3- to 5-foot northwesterly (310-degree,
    deep-water) sea and swell (with a 7- to 11-second period) on
    Friday afternoon into Saturday morning, increasing to 6 to 
    8 feet (with a 5- to 9-second period) on Saturday afternoon
    into next Monday. 

    Arriving from the Southern Hemisphere: A potentially
    significant Southern Hemisphere swell could arrive along
    our coastline Oct. 5.

  ATMOSPHERIC CONDITION:

    Gentle to moderate (8 to 18 mph) and at times gusty Santa 
    Lucia (offshore) winds during the night and morning hours
    will continue to produce clear skies without much in to 
    the way marine low clouds this work week.

    The first full day of fall occurred Saturday. As if on cue
    for the Central Coast, high pressure will begin to build back
    into California through this week. In other words, the final 
    days of summer saw temperatures across the Central Coast
    run below-normal and even the first dusting of snow across
    higher the elevations of the Sierra Nevada, while the first
    official week of autumn will feature above-normal temperatures.

    It’s not uncommon for October to be the warmest month of the
    year in the coastal valleys and along the beaches. In the first
    week of October 1987, a strong, high-pressure ridge combined
    with Santa Lucia (northeasterly) winds to produce a scorching
    heat wave across California. San Luis Obispo was the warmest
    location in the nation, with 111-degree temperatures recorded
    at the airport two days in a row.

    This high-pressure ridge will produce gentle to moderate
    (8 to 18 mph) and at times gusty Santa Lucia (offshore) winds
    during the morning hours, shifting out of the northwest
    during the afternoon, and warmer conditions. In fact,
    San Luis Obispo and Paso Robles will warm to the high 80s 
    to low 90s on Tuesday into Thursday. The beaches will range
    between the mid 70s to low 80s.

    A low-pressure system off the Northern California coastline 
    on Friday will produce increasing northwesterly winds, areas
    of marine low clouds and cooler temperatures along the coastline
    on Friday afternoon into Sunday. Otherwise, the remainder of
    the week looks warm away from the coastline.

   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
        58.8°   77.5°      58.8°   77.0°      60.0°    78.0°       

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

    Inland Temperatures, Paso Robles 
 
     Actual                 Predicted
        
       Sun     Mon     Tue     Wed     Thu    Fri    Sat    Sun
      39 84   43 88   46 91   48 93   49 96  50 95  51 94  51 95               
                                       
    Coastal Valleys Temperatures, San Luis Obispo

       Sun     Mon     Tue     Wed     Thu    Fri    Sat    Sun     
      51 88   51 88   52 90   54 89   54 88  54 88  53 84  55 89           
    
  WINDS:

    Fresh to strong (19 to 31 mph) northwesterly winds will 
    develop this afternoon, decreasing tonight. 

    A pattern of gentle to moderate (8 to 18 mph) Santa Lucia 
    (offshore) winds during the morning hours, shifting out
    of the northwest to moderate to fresh (13 to 24 mph)
    levels during the afternoon hours will develop on Tuesday
    into Friday morning. 

    Strong to gale-force (25 to 38 mph) afternoon northwesterly 
    winds are forecast on Friday afternoon into next Monday.

  DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:

       Today's Maximum Winds:
   
        Max peak winds:       NE        22.3 mph @  8:45 a.m.
        Max sustained wind:   NE        13.3 mph @  8:45 a.m.

      Yesterday's Maximum Winds:
        
        Max peak winds:       NW        37.6 mph @  4:00 p.m.
        Max sustained wind:   NW        29.1 mph @  2:15 p.m.
 
  SEAWATER TEMPERATURES:

    Seawater temperatures will range between 53 and 56 degrees
    through Tuesday, increasing to 54 to 57 degrees on Wednesday
    into Thursday.  Seawater temperatures will decrease on Friday
    into Sunday.

  OCEAN CURRENTS:

    A southerly (offshore) flowing current will continue to 
    flow southward through Sunday.
  
  SEAWATER VISIBILITY:
 
    Seawater visibility was 22 to 24 feet at the Diablo Canyon Intake.

==========================================================================
 24-Hour Ocean Condition Outlook for Monday 09/25 to Tuesday 09/26

  SEA/SWELL:        DIR. NW    HT.  3-5   PER.  7-11    This morning  
  Remaining  at:    DIR. NW    HT.  3-5   PER.  7-11    This afternoon
  Remaining  at:    DIR. NW    HT.  3-5   PER.  7-11    Tonight
 
  WINDS:            DIR. NE    SPEED 10-15 + 25         This morning
  Increasing to:    DIR. NW    SPEED 25-30 + 35         This afternoon
  Decreasing to:    DIR. NW    SPEED 15-20              Tonight
==========================================================================
 48-Hour Ocean Condition Outlook for Tuesday 09/26 to Wednesday 09/27

  SEA/SWELL:        DIR. NW    HT.  3-5   PER.  7-11    Tuesday morning  
  Remaining  at:    DIR. NW    HT.  3-5   PER.  7-11    Tuesday afternoon
  Remaining  at:    DIR. NW    HT.  3-5   PER.  7-11    Tuesday night

  WINDS:            DIR. NE    SPEED 15-20              Tuesday morning
  Increasing to:    DIR. NW    SPEED 20-25              Tuesday afternoon
  Decreasing to:    DIR. NW    SPEED 10-15              Tuesday night
===========================================================================

 Extended Ocean Condition Outlook:

   Strong to gale-force (25 to 38 mph) afternoon northwesterly winds
   are forecast on Friday afternoon into next Monday.

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

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