Monday, July13, 2020
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Marine Weather and Tides
Isla Vista, 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 5:56AMSunset 8:14PM Monday July 13, 2020 6:18 AM PDT (13:18 UTC) Moonrise 12:59AMMoonset 1:56PM Illumination 44% Phase: Third Quarter Moon; Moon at 23 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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PZZ650 East Santa Barbara Channel From Pt. Conception To Pt. Mugu Ca Including Santa Cruz Island- 246 Am Pdt Mon Jul 13 2020
Today..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 9 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Tonight..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft at 7 seconds. Patchy fog after midnight.
Tue..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 7 seconds. Patchy fog in the morning.
Tue night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 6 seconds. Patchy fog after midnight.
Wed..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft at 6 seconds. Patchy fog in the morning.
Wed night..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft at 7 seconds. Patchy fog after midnight.
Thu..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft. Patchy fog.
Fri..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft. Patchy fog.
PZZ600 246 Am Pdt Mon Jul 13 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 1030 mb high pressure system was centered 1200 nm west of san francisco and a 1001 mb thermal low was located over southern nevada. The high will remain fairly consistent through the week before moving northward this weekend. There will be a chance of patchy dense fog across the coastal waters through this morning. Gusty winds and steep seas will affect the coastal waters through Tuesday.


7 Day Forecast for Marine Location Near Isla Vista, CA
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location: 34.4, -119.85     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 131218 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 518 AM PDT Mon Jul 13 2020

updated aviation discussion

SYNOPSIS. 13/219 AM.

High pressure aloft will gradually weaken through Wednesday, resulting in a significant cool down through the week. Temperatures will be back below normal by Tuesday. Night through morning low clouds will increase in coverage through the week. Another warm up is expected Friday into the weekend but not nearly as hot.

SHORT TERM (TDY-WED). 13/253 AM.

It will be cooler today as the upper high responsible for the heat will be pushed to the south and east by a broad trof moving into the PacNW.

Currently the marine layer is near 1000 ft deep and low clouds are increasing across the waters and coastal areas. By dawn there will some clouds most of the near shore areas. There will be an increase in onshore flow both from the west and south. The W to E grad is the most important one today as it is forecast to peak near 10 mb, which mean that it will actually come in around +8 mb. Still this will be enough to cause gusts between 25 and 45 mph across the interior during the afternoon and evening. The increase in the onshore flow (creating an earlier and stronger seabreeze), lower hgts and more marine layer will all combine to drop temps 5 to 10 (locally 15) degrees.

The strong onshore flow will bring an early arrival of low clouds which will also cover more of the coastal area. Hgts are still high enough to prevent much of a stratus intrusion into the vlys.

Tuesday and Wednesday will be very similar to each other as not much is going to change synoptically. Look for night through morning low clouds and fog. The strong onshore flow will continue and this may keep some beaches cloudy all day. There will be gusts between 25 and 45 mph across the interior each afternoon and evening. Max temps will drop 3 to 6 degrees Tuesday and change little on Wednesday. Max temps both Tue and Wed will be 3 to 6 degrees blo normal (and even a few more degrees than that for a few interior locations like Paso Robles).

LONG TERM (THU-SUN). 13/303 AM.

The pattern remains rather static on Thursday and save for a few degrees of warming across the Central Coast the day will closely mirror Wednesday.

Both the EC and GFS forecast that the west end of of a large central CONUS ridge will push in over the state on Friday and then persist through the weekend. The center of the high is much furthereast then last weekends and hgts do not rise as much. While the onshore flow will be a little weaker it will be more onshore than it was last weekend. So over all expect that the coastal marine layer stratus pattern will continue. Max temps will rise Friday but only to near normal values and then will change little over the weekend. The flow pattern is not at all conducive to mid level moisture transport and no mtn convection is forecast.

AVIATION. 13/1217Z.

At 0839Z at KLAX, the marine layer was 1000 ft deep. The top of the inversion was near 3000 feet with a temperature around 29C.

Moderate confidence in coastal TAFs and KPRB, and high confidence in remaining TAFs. There is a 30% chance of IFR/LIFR conditions at KPRB. For coastal sites currently without cigs, timing of arrival may be off by an hour. Good confidence cigs will be IFR to low MVFR south of Point Conception. VFR transition may be delayed by an hour. Low confidence in return of marine clouds after 03Z.

KLAX . Moderate confidence in TAF. VFR transition could be as late as 1830Z. Low confidence in evening forecast with cigs between 008 and 012 possible anytime between 04Z and 09Z. Good confidence in no east wind component greater than 4 kt.

KBUR . High confidence in TAF. There is a 20% chance of IFR cigs 14Z-16Z.

MARINE. 13/241 AM.

High confidence in Small Craft Advisory (SCA) level northwest winds continuing across the outer waters along the Central Coast to San Nicolas Island through late tonight. Winds will likely weaken along the Central Coast and stay elevated south of Point Conception on Tuesday. There is a 30% chance of SCA level winds from Point Conception to San Nicolas Island on Tuesday with the best chance in the evening. Otherwise, high confidence that winds and seas will remain below SCA level from Tuesday through the rest of the week across all waters.

Areas of patchy dense fog will continue across the coastal waters at times through the week, especially the early half.

FIRE WEATHER. 12/913 PM.

A strong ridge of high pressure over the area has brought widespread hot and dry conditions to many areas away from the beaches today. Mountain and foothill areas will continue to see very poor humidity recoveries overnight, generally remaining in the teens and 20s. The hot and dry conditions combined with locally gusty onshore winds will continues to bring widespread elevated fire weather conditions through this evening for all valleys, mountains, and deserts, with brief critical conditions in the windier locations. The upper level ridge of high pressure is expected to weaken somewhat on Monday and Tuesday, leading to stronger onshore flow and increased marine layer influence. This will lead to a cooling trend across much of the region, however very warm and dry conditions will continue to linger across the mountains, deserts, and interior valleys, where temperatures in the 90s to around 100 degrees and humidities between 8 and 20 percent will be common. Onshore winds are expected to strengthen and become more widespread across the interior Monday into Tuesday, with gusts ranging between 25 and 45 mph, strongest in the Antelope Valley and adjacent foothills. As a result, elevated to brief critical fire weather conditions will continue Monday into Tuesday across the mountains, deserts, and interior valleys. Strong onshore flow and increased marine layer influence will continue to keep mild conditions across the district Wednesday into Thursday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 3 AM PDT Tuesday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

No significant hazards expected.



PUBLIC . Rorke AVIATION . Stewart MARINE . Stewart FIRE . Hall/Gomberg SYNOPSIS . Stewart

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NTBC1 - Santa Barbara, CA - 9411340 8 mi48 min Calm G 1.9 61°F 1011.8 hPa
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 11 mi38 min SW 7.8 G 7.8 61°F 63°F1012.2 hPa60°F
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 35 mi38 min WNW 18 G 21 56°F 58°F1012.2 hPa54°F
HRVC1 44 mi48 min 56°F 1013 hPa
PTGC1 - Point Arguello, CA 44 mi78 min N 18 G 20 55°F 1011.6 hPa (+0.5)
46251 47 mi52 min 71°F3 ft

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Barbara, Santa Barbara Municipal Airport, CA3 mi25 minSW 36.00 miFog/Mist57°F55°F93%1011.7 hPa
Santa Ynez, Santa Ynez Airport, CA19 mi23 minN 01.00 miFog/Mist52°F51°F100%1012.9 hPa

Link to 5 minute data for KSBA

Wind History from SBA (wind in knots)
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Last 24hrCalmCalmSW436SW5SW7W10SW7SW10SW9SW4S3SE4E4E6E6E6E6E8E5E4N4SW3
1 day agoSE3E5CalmS5SE5W4W10W10W13SW8SW105SW5W3CalmSE3E4E5E6E5E5E5E4Calm
2 days agoSE3E5NE4SE7S8SE5SW8W8SW10W11W10W7W6W5S3CalmCalmSE3CalmSE3SE4E4E4S3

Tide / Current Tables for Santa Barbara, Pacific Ocean, 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 Gaviota, California
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Gaviota
Click for Map
Mon -- 01:00 AM PDT     Moonrise
Mon -- 04:59 AM PDT     3.07 feet High Tide
Mon -- 05:58 AM PDT     Sunrise
Mon -- 10:43 AM PDT     1.72 feet Low Tide
Mon -- 01:57 PM PDT     Moonset
Mon -- 05:52 PM PDT     4.53 feet High Tide
Mon -- 08:14 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.22.52.833.132.72.421.81.71.92.32.93.54.14.44.54.33.93.32.72.1

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.
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Wind Forecast for Los Angeles/Oxnard, CA (9,2,3,4)
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Ground Weather Radar Station Los Angeles, CA
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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.