Monday, March30, 2020
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Marine Weather and Tides
Guadalupe, CA

Version 3.4
NOTICE
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.

Sunrise 6:49AMSunset 7:23PM Monday March 30, 2020 5:41 AM PDT (12:41 UTC) Moonrise 9:46AMMoonset 12:00AM Illumination 39% Phase: Waxing Crescent; Moon at 6 days in cycle
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.
Marine Forecasts
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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 304 Am Pdt Mon Mar 30 2020
.small craft advisory in effect from this afternoon through Tuesday afternoon...
.gale watch in effect from Tuesday afternoon through late Wednesday night...
Today..NW winds 10 to 20 kt, becoming 15 to 25 kt in the afternoon. Combined seas 4 to 6 ft dominant period 8 seconds.
Tonight..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 5 to 6 ft dominant period 8 seconds.
Tue..NW winds 15 to 25 kt with gusts to 30 kt, becoming 20 to 30 kt with possible gusts to 35 kt in the afternoon. Combined seas 6 to 8 ft dominant period 7 seconds.
Tue night..NW winds 20 to 30 kt with possible gusts to 40 kt. Combined seas 9 to 12 ft dominant period 7 seconds.
Wed..NW winds 20 to 30 kt with possible gusts to 40 kt. Combined seas 10 to 13 ft dominant period 7 seconds.
Wed night..NW winds 20 to 30 kt with possible gusts to 40 kt, becoming 15 to 25 kt with gusts to 30 kt late. Combined seas 11 to 13 ft dominant period 7 seconds, subsiding to 9 to 11 ft dominant period 7 seconds after midnight.
Thu..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 10 to 13 ft.
Fri..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 9 to 12 ft.
PZZ600 304 Am Pdt Mon Mar 30 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z, or 2 am pdt, a 1011 mb surface low was centered in arizona. A 1027 mb surface high was located about 700 nm W of point conception. This high will strengthen and build toward the west coast, bringing increasing winds to the coastal waters. Gales are possible Tuesday afternoon through at least Wed night, especially across the outer waters.


7 Day Forecast for Marine Location Near Guadalupe, CA
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location: 34.74, -121.36     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 301206 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 506 AM PDT Mon Mar 30 2020

SYNOPSIS. 29/1136 PM.

Skies will be mostly clear for the next few days except for some low clouds developing across the coast on Wednesday morning. Max temps rise both Monday and Tuesday and will be near normal on Tuesday. It will then be cooler again starting Wednesday. Dry conditions will persist through at least Friday.

SHORT TERM (TDY-WED). 30/145 AM.

Dry NW flow will persist over the area through Wednesday. Aside from some night through morning low clouds skies will be mostly clear for the next three days.

Some low clouds are randomly forming this morning esp in the Salinas, Cuyama and Santa Ynez Vlys. A weak eddy will likely bring a few low clouds to the LGB area Tuesday morning while offshore flow keeps the rest of the coasts and vlys clear. The same offshore flow will bring some low clouds to the Cuyama and Interior SLO Vly. Weaker offshore flow and a stronger eddy will bring more low clouds to southern LA county on Wednesday. Another round of night and morning clouds is likely for the Cuyama and Interior SLO Vly as well.

There will be about a mb of offshore flow from the east this morning. On Tuesday morning it will be neutral and then will turn onshore on Wed. There will be continuous offshore flow from the north and it will peak on Tuesday morning.

Hgts peak this afternoon at around 578 DM fall some Tuesday and then decrease some more to 568 DM on Wednesday. Max temps will jump significantly today (3 to 6 degrees csts/vlys and 5 to 10 degrees across the interior). The increased offshore northerly flow will be more than enough to counter the lowering hgts on Tuesday and temps will warm another 3 to 6 degrees making Tuesday the warmest day of the next 7. Max temps on Tuesday will be at or even a little above normal. On Wednesday lower hgts and less offshore flow will knock 2 to 5 degrees off of Tuesday readings.

The strong northwest flow pattern and sfc offshore flow will generate gusty north to northwest winds across southern SBA County, the I-5 corridor and portions of the Antelope Vly. Wind advisories are likely for the SBA south coast both tonight and Tuesday night. The I-5 corridor and NW corner of the Antelope Vly will very likely see advisory level gusts Tuesday evening and overnight.

LONG TERM (THU-SUN). 30/333 AM.

Both the EC and GFS agree that weather excitement levels will be quite low on Thu and Fri as dry NW flow with hgts near 567 DM will be over the area. Temps will are likely to rise to a degree each day. Offshore flow will continue but the wind speeds will be much reduced from Tuesday Night's Wednesday's values.

On Saturday the flow flattens out as a cold upper low plunges southward southward just off the coast it then pivots eastward and across Nrn CA. There will be a slight bump up in clouds and max temps will lower some but not too much as hgts fall.

Both mdls indicate broad troffing setting up over the state on Sunday. The mdls are beginning to go out of phase. The GFS is cooler than the slower EC. The clouds will be on the increase and max temps will drop esp if the cooler GFS comes to pass.

Monday looks interesting - The EC and most of its ensemble members bring a cold upper low and rain to the area. The GFS disagrees and has dry NW flow. It will be interesting to see how the two mdls and all of their myriad of ensemble members handle this forecast tomorrow when Monday becomes part of the official forecast.

AVIATION. 30/1205Z.

At 11Z at KLAX, there was no marine inversion.

There areas of low clouds on the Central Coast and in the valleys of SLO and SBA Counties. Conds were mostly IFR to LIFR, except locally low MVFR near the coast. Expect skies to clear by mid to late morning. Then, VFR conds are expected this afternoon through Tue morning except for some low clouds across coastal sections of L.A. County late tonight with low MVFR or high IFR conds.

KLAX . Moderate to high confidence in the 12Z TAF. There is a 20-30% chance that cigs tonight will be in the IFR category. There is a 20% chance that skies will remain clear tonight.

KBUR . High confidence in the 12Z TAF with VFR conds thru the pd.

MARINE. 30/439 AM.

Outer waters . Good confidence in forecast. Expect Small Craft Advisory (SCA) winds or greater across the southern two zones (PZZ673/676) thru Fri, and across the northern zone (PZZ670) this afternoon thru Fri. There is a good chance of Gales Tue afternoon thru at least Wed night, so have issued a Gale Watch.

Inner waters N of Pt Sal. Good confidence in forecast. Expect SCA level winds this afternoon/evening. SCA conds are likely during the afternoon/evening hours Tue thru Fri. There is a 30% chance of Gale force winds Wed afternoon/evening.

Santa Barbara Channel . Low to moderate confidence in forecast. There is a 30-40% chance that a SCA will be needed this afternoon and evening and again Tue afternoon/evening, mainly for western portions. SCA conds are likely Wed thru Fri.

Southern Inner Water . Low to moderate confidence in forecast. There is a 30-40% chance that a SCA will be needed this afternoon and evening and again Tue afternoon/evening, mainly for western portions. There is a 30-40% chance of SCA conds Wed thru Fri.

There will be an extended period of hazardous short period seas under 9 seconds this entire week across most of the waters.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect from 3 PM this afternoon to 3 PM PDT Tuesday for zone 670. (See LAXMWWLOX). Gale Watch in effect from Tuesday afternoon through late Wednesday night for zones 670-673-676. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PDT Tuesday for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

No significant hazards expected.



PUBLIC . Rorke AVIATION . DB MARINE . DB SYNOPSIS . 30

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46259 7 mi42 min 58°F4 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 23 mi42 min NNW 16 G 18 56°F 57°F1023.6 hPa49°F
46218 - Harvest, CA (071) 36 mi42 min 58°F4 ft
PTGC1 - Point Arguello, CA 39 mi42 min N 26 G 28 55°F 1022 hPa (-0.3)
HRVC1 41 mi54 min 55°F 1023.1 hPa
46215 - Diablo Canyon, CA (076) 42 mi42 min 56°F3 ft
CPXC1 44 mi54 min N 7 G 8.9 50°F 1023.8 hPa (+0.3)47°F
PSLC1 - 9412110 - Port San Luis, CA 44 mi54 min Calm G 1.9 51°F 57°F1023.8 hPa

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Vandenberg Air Force Base, CA42 mi44 minNNE 510.00 miMostly Cloudy48°F47°F96%1023.7 hPa

Link to 5 minute data for KVBG

Wind History from VBG (wind in knots)
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Last 24hr------N9NW10N10N10NW9NW9NW8NW10NW11
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--NW7N7N5NE5NE6NE4CalmN3NE4NE7NE5
1 day agoE3SE4E3CalmN4N5N11N12N13N13
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Tide / Current Tables for Point Arguello, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_P
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
Wind Forecast for Los Angeles/Oxnard, CA (8,2,3,4)
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Ground Weather Radar Station Vandenberg AFB, CA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.