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Marine Weather and Tides Oceano, CA Version 3.4

NOTICE 8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

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Sunrise 7:07AM

Sunset 5:17PM

Sunday January 17, 2021 5:27 PM PST (01:27 UTC)

Moonrise 10:18AM

Moonset 10:02PM

Illumination 22%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Oceano, CA

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Area Discussion for - Los Angeles/Oxnard, CA

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FXUS66 KLOX 180028 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 428 PM PST Sun Jan 17 2021

SYNOPSIS. 17/1021 AM.

Gusty offshore winds and above normal temperatures continue today. Much cooler weather begins on Monday with a slight chance of rain and snow showers across the Los Angeles County mountains Monday night and Tuesday. Very strong winds return late Monday night into Wednesday, especially across Los Angeles and Ventura Counties.

SHORT TERM (TDY-WED). 17/156 PM.

Overall, 12Z models in surprisingly good synoptic agreement in the short term for a rather complex pattern. At upper levels, weak cutoff low will develop off the Central CA coast tonight and shift due south through Monday before being devoured by a low developing over the Great Basin Monday night/Tuesday then this low will continue to drift southwest, moving off the Baja coast Tuesday night and Wednesday. Near the surface, moderate to strong offshore flow will develop as a low develops southwest of the area.

Forecast-wise, main issue continues to be the potential for a widespread and DAMAGING wind event. Currently, Santa Ana winds are beginning to diminish this afternoon. This trend is expected to continue through this evening, so will let all WIND ADVISORIES expire with the afternoon forecast. After a relative lull tonight and Monday morning, the next significant Santa Ana wind event will begin to develop Monday afternoon/evening. During this time period, expect northeast winds to increase to advisory levels across the usual spots of Ventura/LA counties. By Monday night and continuing through Wednesday morning, the Santa Ana winds will continue to increase dramatically. 12Z models indicate LAX-DAG gradients peaking between -7.0 and -7.5 mb Tuesday morning with slight weakening through Wednesday. The most concerning part with the Monday night through Wednesday time frame is the amount of upper level wind/thermal support. Models forecast 850/950 mb winds between 45 and 55 knots with excellent cold air advection. So, widespread and DAMAGING northeast winds are likely Monday night through Wednesday morning (gusts anywhere between 50 and 80 MPH) across Ventura/LA counties as well as the mountains of San Luis Obispo and Santa Barbara counties. Will continue with HIGH WIND WATCHES for all of Ventura county and most of LA county. Additionally, will have a HIGH WIND WATCH for the mountains of San Luis Obispo and Santa Barbara counties. Given this pattern, advisory level northeasterly winds will be possible across the Central Coast.

Otherwise, second, much more minor issue, will be the potential for some wrap-around precipitation Tuesday and Tuesday night as the upper low drops southwest. At this time, precipitation chances look very slim, with likely any light showers confined to the San Gabriel Mountains and maybe the far southern coastal waters. Any shower activity that develops over the San Gabriel Mountains will likely fall as snow.

As for temperatures, will expect some slight cooling all areas on Monday. On Tuesday, there will be significant cooling due to cold air advection effects of the Santa Ana winds. On Wednesday, temperatures will rebound with less cold air advection and continued offshore winds.

LONG TERM (THU-SUN). 17/156 PM.

Overall, 12Z models continue to exhibit decent synoptic agreement through the extended period. At upper levels, weak ridge will develop over the area on Thursday with a low dropping across the area Friday through the weekend. Near the surface, weak offshore flow will continue on Thursday with weak onshore flow Friday through the weekend.

Forecast-wise, Thursday looks to be rather benign with some weak northeasterly winds and slightly cooler temperatures. For Friday through Sunday, look for noticeable cooling with all areas a few degrees below seasonal normals. With the upper low dropping across the area, skies will be partly to mostly cloudy with even the potential return of some coastal stratus. As for precipitation chances, there is the potential for some precipitation Friday and Saturday. At this time, do not anticipate any significant precipitation with most areas likely to receive less than 0.10 inches, if any precipitation at all. The only exception to this could be the San Gabriel Mountains where some local amounts around 0.25 would not be out of the question. Additionally, snow levels should be rather low, resulting in some potential light snow accumulations.

AVIATION. 18/0025Z.

At 2300Z at KLAX . There was no marine layer nor an inversion.

High confidence in CAVU TAFs.

KLAX . High confidence in CAVU TAF. There is a 10 percent chance of a 9 kt east wind component 13Z-19Z.

KBUR . High confidence in CAVU TAF. There is a 20 percent chance of 15KT easterly winds 15Z-21Z.

MARINE. 17/256 PM.

Across the Outer Waters . Small Craft Advisory (SCA) level hazardous seas will move through the waters through Tuesday and mariners should use extra caution crossing the Morro Bay Harbor entrance. The wind will increase to SCA level tonight and will remain elevated through Friday across much of the outer waters. There is a sixty percent chance of gale winds on Tuesday.

For the Inner Waters North of Point Sal . SCA level hazardous seas will move through the waters through Tuesday. The wind will increase to SCA level on Tuesday. Conditions will remain below SCA level Wednesday and Thursday then winds increase to SCA level again on Friday.

For the Inner Waters South of Point Conception . Northeast wind gusts to SCA level will occur across all of the waters Monday night through Wednesday and again on Friday. These conditions will bring strong winds and steep seas to east-facing harbor entrances across the Channel Islands including Avalon Harbor on Catalina Island. Hazardous seas may reach 10 feet across the western portion of the inner Santa Barbara Channel on Monday.

BEACHES. 17/216 PM.

A long period west to northwest swell will move through the coastal waters through Tuesday, resulting in high surf and dangerous rip currents on all west and northwest facing beaches.

For the Central Coast . Large breaking waves of 12 to 16 feet will continue through midday today, diminish somewhat overnight, then a larger swell will bring a secondary peak on Monday. Breaking waves of 15 to 20 feet are likely on Monday with local sets potentially greater than 20 feet.

For the Los Angeles and Ventura County beaches and exposed west facing beaches across the Santa Barbara South Coast . Large breaking waves of 4 to 8 feet will continue today with local sets to 10 feet across Ventura County beaches. Another large swell on Monday and Tuesday will bring surf of 5 to 10 feet with local sets to 12 feet across Ventura County beaches.

FIRE WEATHER. 17/405 PM.

Lingering offshore winds gusting between 25 and 40 mph combined with very warm temperatures and low humidities between 8 and 15 percent will continue to bring elevated to brief critical fire weather conditions to portions of Los Angeles and Ventura counties today. Offshore winds are expected to diminish tonight into Monday morning, then increase again across Los Angeles and Ventura counties by Monday afternoon, with humidities generally in the 15 to 25 percent range.

A very strong and damaging north to northeast wind event is likely between late Monday night and Wednesday morning. The strongest and most widespread winds are expected to be Tuesday mid morning through Tuesday night when widespread damaging wind gusts of 60 to 80 mph will be likely in the mountains, foothills, and some valley locations in Los Angeles and Ventura counties. Even coastal areas (including portions of the LA Basin) will likely see locally damaging wind gusts of 50 to 60 mph. Portions of San Luis Obispo and Santa Barbara counties (especially the mountains and Central Coast) could see strong northeast to east winds with this event Tuesday into Tuesday night, with wind gusts of 30 to 50 mph, except locally 60 mph across the higher terrain. Due to the uncertainty with the track of the upper low and the possibility of some moisture entrainment on Tuesday, confidence remains low with the humidity forecast. However there is the potential for humidity levels between 15 and 30 percent for a portion of this strong wind event, with the driest air focused across coastal and valley areas where downslope drying will be maximized. Due to the strength of this upcoming wind event and current state of the very dry fuels, a Fire Weather Watch will be considered for Tuesday with the afternoon forecast. Significant wind impacts will be likely with this event, including the threat of widespread downed trees and powerlines, as well as power outages. Winds are then expected to diminish Thursday through next weekend, with a chance of precipitation Friday through Sunday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect until 10 PM PST Tuesday for zones 34-35-39>41-87. (See LAXCFWLOX). High Wind Watch in effect from Monday evening through late Tuesday night for zones 40-41-44>46-53-54-88-547. (See LAXNPWLOX). High Wind Watch in effect from late Monday night through late Tuesday night for zones 51-52. (See LAXNPWLOX). Fire Weather Watch in effect from Monday evening through Wednesday morning for zones 234>236-251-252. (See LAXRFWLOX). Fire Weather Watch in effect from late Monday night through Tuesday evening for zones 240-241-244>246-253-254-288-547-548. (See LAXRFWLOX). PZ . Small Craft Advisory in effect until 3 AM PST Tuesday for zones 645-670-673-676. (See LAXMWWLOX). Gale Watch in effect from late Monday night through Wednesday morning for zones 650-655-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

Strong to potentially damaging Santa Ana winds are possible into early Wednesday.



PUBLIC . Thompson AVIATION . ASR MARINE . Kj BEACHES . Kj FIRE . Gomberg SYNOPSIS . Kj

weather.gov/losangeles

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CPXC1	8 mi	29 min	Calm G 1.9
PSLC1 - 9412110 - Port San Luis, CA	9 mi	57 min	Calm G 1.9	63°F	56°F		1014.8 hPa
46215 - Diablo Canyon, CA (076)	15 mi	31 min			55°F	7 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA	24 mi	37 min	NW 5.8 G 9.7		56°F	8 ft	1014.6 hPa
PTGC1 - Point Arguello, CA	37 mi	87 min	N 8.9 G 8.9	62°F			1014.5 hPa (-1.2)
HRVC1	44 mi	57 min		61°F			1014.6 hPa
46218 - Harvest, CA (071)	46 mi	31 min			57°F	9 ft

Wind History for Port San Luis, CA

(wind in knots)    EDIT      (on/off)   Help

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1 day ago

NW2

NE3 G8

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N9 G15

N12 G18

NW3 G9

N11 G18

N14 G18

N17 G25

N10 G20

N13 G18

N10 G14

N8 G16

NW1 G14

NE4 G10

N8 G13

NW12 G17

N13 G21

N9 G15

N13 G19

N10 G19

N11 G15

N9 G14

2 days ago

SE2

E6 G11

NW1 G5

NW10 G14

E1

N17 G25

N7 G18

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NW1

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W1

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W1

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA	9 mi	31 min	WNW 5	10.00 mi	Fair	69°F	43°F	39%	1014.1 hPa
Santa Maria Public Airport/Capt G Allan Hancock Field, CA	16 mi	36 min	W 5	10.00 mi	Fair	69°F	40°F	35%	1014.8 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)

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W4

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Calm

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SE6

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Calm

Calm

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W7

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NW11

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W5

1 day ago

Calm

NW10

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NW9 G19

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S6

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NW7 G19

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NW11

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NW6

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NW12 G17

NW10

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N11 G17

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2 days ago

NW7

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SE3

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W8

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NW8

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Tide / Current Tables for Avila, California

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Tide / Current Tables for Port San Luis Wharf, California

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Weather Map

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GEOS Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Ground Weather Radar Station

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