Pismo Beach Ocean / Surf Report

5/27/2020

SEA/SWELL:

    Today's 3- to 5-foot northwesterly (300-degree, deep-water)
    swell (with an 8- to 11-second period) is forecast along our
    coastline through Friday morning.

    A 4- to 6-foot northwesterly (300-degree, deep-water) swell
    (with an 8- to 14-second period) will arrive along our
    coastline on Friday afternoon through Sunday morning.

    A 5- to 7-foot northwesterly (310-degree, deep-water) sea
    and swell (with a 5- to 8-second period) will develop
    along our coastline on Sunday afternoon through next
    Tuesday.

    Arriving from the Southern Hemisphere:

    Today's 1- to 2-foot Southern Hemisphere (220-degree, deep-
    water) swell (with a 17- to 19-second period) is forecast
    along our coastline through tonight.

    A 2- to 4-foot Southern Hemisphere (195-degree, deep-water)
    swell (with a 16- to 18-second period) will arrive along our
    coastline Friday and will remain at this height but with a
    gradually shorter period through Monday.

   ATMOSPHERIC CONDITIONS:

    Marine low clouds have redeveloped along the coastline
    from Cayucos southward to the Southern California Bight.

    This coastal stratus will move slightly inland later
    this morning, retreating back to the immediate shoreline
    by this afternoon. The marine low clouds will deepen
    and surge into the coastal valleys this evening and
    persist in the coastal regions through Friday morning.  

    Away from the immediate coast, warm to hot conditions will
    develop today into Thursday with the coastal valleys (San
    Luis Obispo) reaching the low to the mid-80s, while the
    inland valleys (Paso Robles) will hit triple digit levels.
    Temperatures along the beaches will range between the mid
    to high-60s.

    The ridge of high pressure responsible for the hot inland
    weather will shift eastward while a late-season upper-level
    low (557 dm) near Monterey Bay will produce increasing
    southerly winds, clouds and cooler temperatures later on
    Friday into Saturday. At this time, sprinkles or light rain
    showers may develop north of Avila Beach on Saturday.

    This low-pressure system will be followed by fresh to strong
    (19 to 31 mph) northwesterly winds and clearing skies on
    Sunday into Monday.
     
   WILDFIRE INDEX RATINGS:

    COASTAL: FIA 508
    INLAND:  FIA 497, 510, 575, 580, 582 and 590

    The PG&E Fire Index Ratings will be at medium (R2) to high (R3)
    levels along the Coastline, Coastal and Inland Valleys, and Far
    Inland Areas today.

  DIABLO CANYON METEOROLOGICAL TOWER TEMPERATURE DATA:

         Yesterday's          Today's           Tomorrow's
         Min    Max         Min    Max         Min     Max
        53.7°   64.4°      55.6°   65.0°      53.0°    65.0°

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

    Inland Temperatures, Paso Robles

     Actual                    Predicted
              
     Mon      Tue     Wed    Thu     Fri    Sat    Sun    Mon    Tue
    49 99   54 102   57 102 56 96   54 81  52 75  50 81  49 82  49 83             
        
   Coastal Valleys Temperatures, San Luis Obispo

     Mon      Tue     Wed    Thu     Fri    Sat    Sun   Mon     Tue
    50 84    53 84   56 82  55 80   55 70  54 68  55 69 53 72   54 75               
                    
  WINDS:

    Gentle to moderate (8 to 18 mph) west to northwesterly winds are
    forecast this afternoon through Thursday.

    Fresh to strong (19 to 31 mph) southerly winds are expected later
    on Friday through Saturday.

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

  DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:

     Today's Maximum Winds:
 
        Max peak winds:       NE            8.0 mph @   4:30 a.m.
        Max sustained wind:   NE            6.0 mph @   4:30 a.m.

     Yesterday's Maximum Winds:       
        
        Max peak winds:       NW           14.0 mph @   9:45 p.m.
        Max sustained wind:   NW           12.0 mph @   9:45 p.m.

  SEAWATER TEMPERATURES:

     Seawater temperatures will range between 52 and 54 degrees
     through Thursday, increasing to 57 to 59 degrees on Friday
     into Saturday.

  OCEAN CURRENTS:

     Today's northerly (onshore) flowing current will continue
     to flow northward through Saturday.  
 
  SEAWATER VISIBILITY:

     Seawater visibility was 5 to 7 feet at the Diablo Canyon Marina.

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24-Hour Ocean Condition Outlook for Wednesday 05/27 to Thursday 05/28

  SWELL:            DIR. NW      HT.  4-6   PER.  8-12  This morning
  Remaining  at:    DIR. NW      HT.  4-6   PER.  8-11  This afternoon
  Remaining  at:    DIR. NW      HT.  4-6   PER.  8-11  Tonight

 (Combined with:    DIR. SW      HT.  1-3   PER. 18-20  All day)

  WINDS:            DIR. NE      SPEED  5-10            This morning
  Increasing to:    DIR. NW      SPEED 10-15            This afternoon
  Decreasing to:    DIR. SW      SPEED  5-10            Tonight
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48-Hour Ocean Condition Outlook for Thursday 05/28 to Friday 05/29
   
  SWELL:            DIR. NW      HT.  3-5   PER.  8-11  Thursday morning
  Remaining  at:    DIR. NW      HT.  3-5   PER.  8-11  Thursday afternoon
  Remaining  at:    DIR. NW      HT.  3-5   PER.  8-11  Thursday night

  WINDS:            DIR. NW      SPEED  5-10            Thursday morning
  Increasing to:    DIR. NW      SPEED 10-15            Thursday afternoon
  Decreasing to:    DIR. NW      SPEED  5-10            Thursday night
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Extended Ocean Condition Outlook:

    Fresh to strong (19 to 31 mph) southerly winds are expected later
    on Friday through Saturday.

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