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.
==========================================================================
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
=========================================================================
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
==========================================================================
Extended Ocean Condition Outlook:
Fresh to strong (19 to 31 mph) southerly winds are expected later
on Friday through Saturday.
==========================================================================
