Friday, January17, 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 7:06AMSunset 5:17PM Friday January 17, 2020 5:00 AM PST (13:00 UTC) Moonrise 12:10AMMoonset 12:00PM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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- 308 Am Pst Fri Jan 17 2020
.small craft advisory in effect until 9 am pst this morning...
Today..N winds 5 to 10 kt, becoming nw 10 to 15 kt. Wind waves 2 ft or less. NW swell 8 to 10 ft at 12 seconds, subsiding to 6 to 8 ft at 12 seconds by mid morning.
Tonight..N winds 10 to 15 kt. Wind waves 2 ft. NW swell 5 to 7 ft at 11 seconds.
Sat..N winds 10 to 15 kt. Wind waves 2 ft. NW swell 5 to 6 ft at 11 seconds.
Sat night..N winds 10 to 15 kt. Wind waves 2 ft. NW swell 4 to 6 ft at 11 seconds.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 6 to 7 ft at 15 seconds, building to 8 to 9 ft at 15 seconds in the afternoon.
Sun night..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 8 to 9 ft at 14 seconds, subsiding to 7 to 8 ft at 14 seconds after midnight.
Mon..W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 6 to 8 ft, building to 8 to 10 ft late. Chance of showers.
Tue..W winds 10 to 15 kt. Wind waves 2 ft. W swell 10 to 13 ft. Chance of showers.
PZZ600 308 Am Pst Fri Jan 17 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z or 2 am pst, a 1000 mb low was centered in idaho, with a cold front extending into southern california. A 1024 mb high was centered about 400 nm west of point conception.


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 171001 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 201 AM PST Fri Jan 17 2020

SYNOPSIS. 17/200 AM.

Today through Sunday, high pressure will build over the area while weak northeasterly flow develops near the surface. This will result in dry and warmer conditions through Sunday with locally gusty winds. For early next week, cloudy and cooler conditions are expected with a chance of light showers.

SHORT TERM (TDY-SUN). 17/201 AM.

Overall, 00Z models in good synoptic agreement through the short-term period. At upper levels, ridge will develop over the area today and Saturday then will weaken slightly on Sunday. Near the surface, offshore flow will increase, peaking in strength by Sunday morning.

Forecast-wise, cold front, and associated rain, has moved out of LA county, leaving behind some partly cloudy skies and patchy fog. Expect clouds to decrease through the day, resulting in a mostly sunny sky condition while fog dissipates by mid morning. With more sunshine today and higher thicknesses/H5 heights, temperatures will be several degrees warmer.

For tonight through Sunday, models indicate a rather significant amount of high level moisture. This should translate into a decent amount of high clouds through Sunday, warranting a partly to mostly cloudy sky condition. Offshore surface gradients will be increasing, with LAX-DAG peaking between -4.0 and -5.3 mb by Sunday morning. Upper level winds and thermal support is not too impressive, so do not anticipate any widespread advisory-level northeast winds. However, there will likely be some local advisory level gusts on Sunday morning in the mountains of Ventura and Los Angeles counties. With the ridge building overhead and offshore gradients, temperatures will be warming Saturday and Sunday. If the high clouds are thinner than anticipated, high temperatures could be a few degrees higher than currently forecast.

LONG TERM (MON-THU). 17/200 AM.

For extended, no major changes to previous thinking. For Monday and Tuesday, an upper level trough will move across the West Coast, entraining varying amounts of mid to high level moisture (with GFS more robust than the ECMWF). So, likely partly to mostly cloudy skies for the area. Will keep with the idea of some chance/slight chance of showers Monday and Tuesday although any precipitation that develops will be very light. With anticipated cloud cover and weak onshore flow, temperatures should cool a couple degrees both Monday and Tuesday.

For Wednesday and Thursday, upper level ridge will build off the West Coast while gradients turn weakly offshore by Thursday. So, will expect high level moisture to diminish with mostly clear skies prevailing. Temperatures should exhibit a slight warming trend with building ridge and surface gradient trends.

AVIATION. 17/0602Z.

At 0530Z at KLAX, there was a 9000 ft deep moist layer.

Low confidence in TAFs through 18Z then good confidence. Cigs/Vis will vary frequently through 09Z as front rolls through. There is a 30 percent chance that LIFR/IFR cigs will form a few hours after the rain stops and persist through mid morning.

KLAX . Low confidence in TAF through 18Z then good confidence. Cigs/Vis will vary frequently through 09Z. There is a 30 percent chance of LIFR/IFR cigs 11Z-16Z. There is a 20 percent chc of an 6 kt east wind component through 10Z.

KBUR . Low confidence in TAF through 18Z then good confidence. Cigs/Vis will vary frequently through 09Z. There is a 30 percent chance of LIFR/IFR cigs 11Z-16Z.

MARINE. 16/1253 PM.

A storm system will impact the area into Friday. A cold front has moved into the Central Coast this afternoon, and will push south of Point Conception by this evening, and through Orange County by around midnight. Gusty south to southwest winds will affect the area near the front, with gusty west to northwest winds after the front passes. Gale Force winds were observed off the Central Coast, but winds now should not exceed Small Craft Advisory (SCA). All other waters should see winds near SCY at times into Friday. Moderate confidence in all hazards. Expect short period seas on top of the moderately long period swell, especially around and after the frontal passage. No thunderstorms are expected with this system, but enhanced cells near the cold front could produce thunderstorm- like conditions with strong gusty.

Moderate confidence if winds staying below SCA to follow through the weekend. There is a potential for a large long period northwest to west swell affecting the area Tuesday and Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 3 AM PST early this morning for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 5 AM PST early this morning for zones 650-655. (See LAXMWWLOX). Small Craft Advisory in effect until 9 AM PST this morning for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SUN-THU).

No significant hazards expected.



PUBLIC . Thompson AVIATION . Rorke MARINE . Kittell SYNOPSIS . RAT

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46259 7 mi31 min 56°F9 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 23 mi21 min ENE 3.9 G 7.8 51°F 56°F1022.9 hPa44°F
46218 - Harvest, CA (071) 36 mi31 min 58°F9 ft
PTGC1 - Point Arguello, CA 39 mi61 min N 8 G 9.9 48°F 1021.8 hPa (+0.9)
HRVC1 41 mi49 min 54°F 1022.2 hPa
46215 - Diablo Canyon, CA (076) 42 mi31 min 56°F6 ft
CPXC1 44 mi23 min NE 4.1 G 5.1 43°F 1023.2 hPa40°F
PSLC1 - 9412110 - Port San Luis, CA 44 mi43 min Calm G 1 45°F 55°F1023.4 hPa

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Vandenberg Air Force Base, CA42 mi63 minENE 410.00 miFair37°F36°F96%1023.1 hPa

Link to 5 minute data for KVBG

Wind History from VBG (wind in knots)
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Last 24hrSE5SE6SE6S6SE8SE9S12SE15SE18
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SE10N7CalmCalmS3SE6SE3SE4SE6SE7SE6E3NE4
1 day agoE4E3SE7SE8SE7SE7SE3W7W7NW8NW6NW8NW5N4CalmSE5SE3SE5SE5S6SE5SE6SE7SE6
2 days agoNE7NE5NE8NE5NE7N11N13N15N15N18
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N19N13N13N13N10N7--NE7NE4CalmNE3SE3SE4

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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weather_mapweather_map weather_map

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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.