Pismo Beach Ocean / Surf Report

4/5/2021

SEA/SWELL:

    A pattern of 4- to 6-foot northwesterly (320-degree, shallow-
    water) seas (with a 4- to 8-second period) developing during
    morning, increasing to 5 to 7 feet during the afternoon and
    night will continue through Wednesday, increasing to 7 to 9
    feet on Thursday.

    These northwesterly (320-degree, shallow-water) seas will
    further build to 8- to 10-feet (with a 5- to 8-second period)
    on Friday and remain at this level through next Monday.
    
    Arriving from the Southern Hemisphere:

    A 1- to 3-foot Southern Hemisphere (200-degree, deep-water)
    swell (with a 14- to 17-second period) is forecast along
    our coastline today and Tuesday.

  ATMOSPHERIC CONDITIONS:

    The long-range models indicate dry conditions will continue
    into the first half of April, if not longer, as the Central
    Coast moves toward the dryer months of May and June. If an
    Atmospheric River (AR) rain event had not developed in late
    January, this would be one of the driest years on record
    since 1869 at Cal Poly, San Luis Obispo. In fact, according
    to Jan Null at Golden Gate Weather Services, “The rainfall
    for the bulk of the last two seasons is now the second
    driest in 170 years of record for San Francisco.”

    Historically, at this time of the year, the winds blow out
    of the northwest around 80 percent of the time at the Diablo
    Canyon Power Plant’s meteorological tower. From today through
    Sunday, it will be nearly 100 percent of the time.

    Strong to gale-force (25 to 38 mph) afternoon northwesterly
    winds will start today and will continue through Wednesday,
    further increasing to moderate gale-force to fresh gale-force
    (32 to 46 mph) levels on Thursday through Sunday.   
     
    This condition will produce areas of low marine clouds along
    the coastline during the overnight, clearing during morning.
    Little change in terms of temperatures is anticipated for
    the remainder of the week, with seasonable temperatures
    favored heading into next weekend with mid to high-70s in
    the inland areas, low-70s in the coastal valleys and high
    50s to low-60s along the beaches.  
    
    At this time, the next chance of rain is expected on April
    19 and 20.

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

    The PG&E Fire Index Ratings will be low (R1) levels
    along our Coastline and medium (R2) levels in the
    Coastal and Inland Valleys, and the Far Inland areas
    today and Tuesday.

    The PG&E Fire Index Ratings will be medium (R2) levels
    along our Coastline and high (R3) levels in the
    Coastal and Inland Valleys, and the Far Inland areas
    on Wednesday.

   DIABLO CANYON METEOROLOGICAL TOWER TEMPERATURE DATA:
 
         Yesterday's          Today's           Tomorrow's
         Min    Max         Min    Max         Min     Max
        49.3°   57.1°      49.8°   58.0°      50.0°    59.0°
 
   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    Mon
      34 80   43 75  40 77  40 78  40 78  41 78  39 78  40 75  39 73              
        
   Coastal Valleys Temperatures, San Luis Obispo
 
       Sun     Mon    Tue    Wed    Thu    Fri    Sat    Sun    Mon
      41 67   45 66  45 70  45 72  45 71  45 71  44 72  45 66  44 66                     
                    
   WINDS:

    Strong to gale-force (25 to 38 mph) afternoon northwesterly
    winds will start today and will continue through Wednesday,
    further increasing to moderate gale-force to fresh gale-force
    (32 to 46 mph) levels on Thursday through Sunday.

   DIABLO CANYON METEOROLOGICAL TOWER WIND DATA:
 
     Today's Maximum Winds:
 
        Max peak winds:         NW   37.0 mph @  6:15 a.m.
        Max sustained wind:     NW   29.0 mph @  6:15 a.m.
 
     Monday's Maximum Winds:       
        
        Max peak winds:         NW   38.0 mph @  3:00 p.m.
        Max sustained wind:     NW   31.0 mph @  2:00 p.m.
 
   SEAWATER TEMPERATURES:

     Seawater temperatures will range between 48 and 51 degrees
     through next Monday.

   OCEAN CURRENTS:

     A southerly (offshore) flowing current will continue to flow
     southward through next Monday.    

   SEAWATER VISIBILITY:
 
     Seawater visibility was not available today.

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24-Hour Ocean Condition Outlook for Monday 04/05 to Tuesday 04/06

  SEA/SWELL:        DIR. NW      HT.  4-6  PER.  5-11   This morning
  Increasing to:    DIR. NW      HT.  5-7  PER.  5-8    This afternoon
  Remaining  at:    DIR. NW      HT.  5-7  PER.  5-8    Tonight

 (Combined with:    DIR. S       HT.  1-3  PER. 14-17   All day)

  WINDS:            DIR. NW      SPEED 20-25 + 30       This morning
  Remaining  at:    DIR. NW      SPEED 30-35 + 40       This afternoon
  Decreasing to:    DIR. NW      SPEED 15-20 + 25       Tonight
==========================================================================
48-Hour Ocean Condition Outlook for Tuesday 04/06 to Wednesday 04/07

  SEA/SWELL:        DIR. NW      HT.  4-6  PER.  5-8    Tuesday morning
  Remaining  at:    DIR. NW      HT.  5-7  PER.  5-8    Tuesday afternoon
  Remaining  at:    DIR. NW      HT.  5-7  PER.  5-8    Tuesday night

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

  WINDS:            DIR. NW      SPEED 20-25 + 30       Tuesday morning
  Increasing to:    DIR. NW      SPEED 30-35 + 40       Tuesday afternoon
  Decreasing to:    DIR. NW      SPEED 15-20 + 25       Tuesday night
==========================================================================
 
 Extended Ocean Condition Outlook:

    Strong to gale-force (25 to 38 mph) afternoon northwesterly
    winds will start today and will continue through Wednesday,
    further increasing to moderate gale-force to fresh gale-force
    (32 to 46 mph) levels on Thursday through Sunday.

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