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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:27AM | Sunset 7:43PM | Friday August 23, 2019 3:45 AM PDT (10:45 UTC) | Moonrise 11:31PM | Moonset 12:54PM | Illumination 46% |  |
PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 306 Am Pdt Fri Aug 23 2019
Today..SE to S winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 9 seconds.
Tonight..S winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds.
Sat..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Sat night..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 10 seconds and S 3 ft at 14 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 12 seconds and S 3 ft at 13 seconds. Patchy fog in the morning.
Sun night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 12 seconds and S 3 ft at 12 seconds. Patchy fog after midnight.
Mon..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
Tue..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
Today..SE to S winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 9 seconds.
Tonight..S winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds.
Sat..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Sat night..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 10 seconds and S 3 ft at 14 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 12 seconds and S 3 ft at 13 seconds. Patchy fog in the morning.
Sun night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 12 seconds and S 3 ft at 12 seconds. Patchy fog after midnight.
Mon..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
Tue..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft. Patchy fog.
PZZ600 306 Am Pdt Fri Aug 23 2019
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 1020 mb surface high was centered 500 nm W of portland oregon. A 999 mb thermal low was centered near las vegas. A strong eddy circulation will bring abnormally strong southeast winds for august to the nearshore coastal waters this morning.
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 1020 mb surface high was centered 500 nm W of portland oregon. A 999 mb thermal low was centered near las vegas. A strong eddy circulation will bring abnormally strong southeast winds for august to the nearshore coastal waters this morning.
7 Day Forecast for Marine Location Near San Luis Obispo, CA
Hourly EDIT Helplocation: 35.27, -120.66 debug
Area Discussion for - Los Angeles/Oxnard, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 klox 231022 afdlox area forecast discussion national weather service los angeles oxnard ca 322 am pdt Fri aug 23 2019 Synopsis 23 257 am. A strong eddy circulation across the coastal waters will bring below normal temperatures across much of the forecast area today. High pressure will build in this weekend allowing for a warming trend through at least early next week. High temperatures will be a few degrees above normal by this weekend. Expect night through morning low clouds and fog to continue across many coastal areas this weekend with some coastal valleys could experience some low clouds as well. Warmer than normal temperatures away from the coast will continue into next week. Short term (tdy-sun) 23 321 am. Latest goes-w fog product imagery indicated widespread low clouds across all coast and coastal valleys as well as the santa clarita valley. The marine layer has deepened to around 2400 ft early this morning mainly due to a relatively strong catalina eddy. The southerly surge of winds affecting the socal bight will continue to push low clouds farther north around point conception and across the central coast into the afternoon hours. Expect low clouds to be a little slower to scour out across coastal locations today. Most areas will be 3 to 8 degrees cooler compared to yesterday with the interior valleys of slo county lowering 15 degrees. The one exception will be the southern portion of the central coast as some downsloping across the santa ynez range is expected with southerly flow. The high at paso robles is expected to be 84 degrees compared to 98 yesterday due to the cooler southerly flow. Most valleys will reach the mid 80s to lower 90s while the antelope valley will be in the mid to upper 90s. By Saturday, high pressure aloft will build in and become elongated NW to SE across the eastern pac and much of california and into arizona. This will cause the upper trough to redirect farther north across the pac nw. At the surface, onshore gradients will trend weaker each day from Saturday to Sunday allowing for temps to climb 3-6 degrees Saturday with further warming 2-4 degrees. The one exception will be across the salinas river valley including paso robles where high temps will rebound quite nicely from the 84 forecast for today, to the lower 90s on Saturday then close to 100 on Sunday. The marine layer will become more shallow due to the stronger subsidence from the 594 dm high over the region. Expect low clouds to affect coastal areas as well as the santa ynez valley. Some low clouds could creep into a few coastal valleys across l.A. And ventura counties through the weekend. As far as tropical storm ivo (pronounced "eye-vo") the location as of 2 am pdt was around 455 miles SW of the southern tip of baja california. Ivo will turn to the nnw following a path parallel to baja through early Sunday morning. As ivo reaches the cooler waters off the mid baja peninsula, it is expected to weaken rapidly to a depression. High pressure situated over much of california will push the remnants of ivo to the wsw of southern california Sunday night into Monday. There will be a few mid to high level clouds moving across the forecast area Sunday evening into Monday but not expecting any weather related issues, except increasing surf across south facing beaches. See the "beaches discussion" below for more details. Long term (mon-thu) 23 318 am. Both the GFS and ec are in decent agreement with large scale features through the extended period (mon-thu). With high pressure aloft dominating the pattern through much of next week with moderately strong onshore flow at the lower levels, high temps should remain a few degrees above normal with only subtle day to day fluctuations. Night through morning low clouds and fog will continue to affect most coastal areas and the santa ynez valley. A few coastal valleys could see some patchy low clouds as well depending if the marine layer could deepen at times. The GFS and ECMWF continue to show the remnants of ivo staying to the SW to W of the forecast area Sunday night into Monday due to the strong high pressure over socal. However persistent SE mid level flow will remain over the area mon-wed before turning SW on Thursday. Although nothing is showing up as far as disturbances moving north in the southerly flow this far out, will have to continue to monitor in case storms fire up across mexico and southern az and outflow from these storms move into the deserts and mountains. For now it looks dry through the extended period with variable high clouds moving through the area. Aviation 23 0537z. At 0430z, the marine layer was 2100 feet deep at klax. The top of the inversion was around 4300 feet with a temp of 234c. |
Widespread low clouds expected to push into all coastal and valley areas overnight with the exception of the far interior valleys of slo county and the cuyama valley. There is a slight chance that a strong eddy circulation will move westward off the coast of l.A. County pulling the clouds out of l.A. County. Otherwise, if this does not occur, expect rather slow clearing on fri, by late morning in the valleys and early to mid afternoon near the coast. Cigs will generally rise overnight into the MVFR category, but will remain ifr to lifr for most of the night north of pt conception. Klax... Moderate confidence in the 06z taf. CIGS will likely scatter out for a few hours this evening. There is a 30% chance that CIGS will not return until at least 14z. Here is a 30% chance that CIGS will not return Fri evening until after 07z. There is a 20% chance of east winds gusting to 15 knots between 11z and 18z. There is a 20% chance that east winds will persist through 21z. Kbur... Moderate confidence overall in the 06z taf. While cigs should arrive by 08z, they may be temporary, and there is a 30% chance that more permanent CIGS will not arrive until 14z fri. Marine 23 318 am. Moderate to high confidence that winds will remain well below sca levels across the outer waters and the inner waters north of point sal today through tue. A strong eddy circulation will bring abnormally strong southeast winds for august to the southern inner coastal waters and the santa barbara channel this morning (as well as eastern portions of the outer southern outer waters). While winds speeds will be mostly 10 to 15 kt, peak winds of 15 and 25 kt are expected at times between point conception and orange county at times. There is a 50-60% chance that winds will reach SCA criteria. Otherwise, sca conds are not expected across the inner waters south of pt conception from this afternoon through tue. An abnormally large south to southeast swell from tropical storm ivo will impact the waters Sunday through Tuesday. There is a potential for the swell to peak between 5 and 7 feet. A swell from this direction would cause strong surges around and inside the vulnerable harbors, especially avalon and san pedro long beach. Large breaking waves near the coast are also likely, which has a history of capsizing small drifting boats. Beaches 23 320 am. Moderate south swell with a fairly long period will bring some elevate surf of 3 to 5 feet with local sets to 6 feet to south facing beaches of los angeles and ventura counties today. There will also be a high risk of rip currents. Tropical storm ivo, currently about 500 miles southwest of cabo san lucas, will generate a southeasterly swell reaching california Sunday and persisting through Tuesday. The peak of the swell should occur Sunday afternoon through Monday morning with a period around 14 seconds. While the peak swell heights will most likely fall between 4 and 6 feet, there is a chance for a range of 5 and 7 feet. Dangerous rip currents and large breaking waves on rock jetties are certain. Surf heights should reach at least 4 to 6 feet over south facing beaches, with a chance of peak surf reaching 6 to 8 feet especially for los angeles county, which would require a high surf advisory. There is a risk for impactful coastal flooding as well. The highest tides will be late in the afternoon, and should reach 5.7 to 6.7 feet. If the peak swell ends up 3 to 5 feet, flooding impacts would be minor and mainly in the form of beach erosion. If the swell height ends up closer to 8 feet, more impactful flooding would be expected for the vulnerable areas like pebbly beach in avalon and the long beach peninsula if unprotected. Lox watches warnings advisories Ca... Beach hazards statement in effect from late Saturday night through Tuesday morning for zones 40-41-87. (see laxcfwlox). Pz... Small craft advisory in effect until noon pdt today for zones 650-655. (see laxmwwlox). Hazard potential outlook (sun-thu) Elevated surf and strong rip currents are possible at area beaches early next week. Public... Kaplan aviation... Db marine... Db kittell beaches... Db kittell synopsis... Kaplan weather.Gov losangeles |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| CPXC1 | 8 mi | 17 min | ESE 9.9 G 12 | 57°F | 998.2 hPa | 56°F | ||
| PSLC1 - 9412110 - Port San Luis, CA | 9 mi | 45 min | ESE 5.1 G 6 | 58°F | 63°F | 1010.1 hPa (+0.4) | ||
| 46215 - Diablo Canyon, CA (076) | 11 mi | 45 min | 55°F | 5 ft | ||||
| 46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA | 29 mi | 55 min | 58°F | 57°F | 7 ft | 1009.2 hPa (-0.0) | ||
| PTGC1 - Point Arguello, CA | 48 mi | 45 min | N 6 G 6 | 58°F | 1009.4 hPa (+0.8) |
Wind History for Port San Luis, CA
(wind in knots) EDIT (on/off) Help| 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | |
| Last 24hr | N | NE | N | E | SE G4 | E | -- | NE | NE | E | E | NE | NE | NE | E | N | SE | E | SW | E | SE | S | SE | E |
| 1 day ago | N | -- | NW | NE | -- | S | E | NE | S | E G5 | W G19 | W G29 | W | SW G11 | N G21 | NE | N | -- | -- | -- | SE | SE | S | -- |
| 2 days ago | N | N | W | NE | S G6 | W G14 | W G17 | W G15 | W | W G22 | W G23 | W G19 | W G15 | W G11 | W | W | -- | NW | -- | SW | W | -- | -- |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA | 2 mi | 3.8 hrs | S 4 | 10.00 mi | Overcast | 60°F | 57°F | 90% | 1008.6 hPa |
Link to 5 minute data for KSBP
Wind History from SBP (wind in knots)
| 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | |
| Last 24hr | SW | SW | W | W | W | W | NW | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | Calm | S | S | SE | SE | S |
| 1 day ago | Calm | SE | SE | W | W | NW | NW | NW G24 | NW | NW | NW | NW G27 | NW | NW | NW | NW | NW | W | W | W | W | Calm | W | |
| 2 days ago | NW | NW | NW | NW | NW | Calm | NW | NW | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | Calm | Calm | Calm |
Tide / Current Tables for Avila, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataAvila
Click for Map
Fri -- 04:58 AM PDT 0.04 feet High Tide
Fri -- 06:28 AM PDT Sunrise
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:14 AM PDT -0.54 feet Low Tide
Fri -- 01:54 PM PDT Moonset
Fri -- 04:18 PM PDT 1.99 feet High Tide
Fri -- 07:41 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 04:58 AM PDT 0.04 feet High Tide
Fri -- 06:28 AM PDT Sunrise
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:14 AM PDT -0.54 feet Low Tide
Fri -- 01:54 PM PDT Moonset
Fri -- 04:18 PM PDT 1.99 feet High Tide
Fri -- 07:41 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| -1.3 | -1 | -0.6 | -0.2 | -0 | 0 | -0 | -0.2 | -0.4 | -0.5 | -0.5 | -0.3 | 0.1 | 0.7 | 1.3 | 1.7 | 2 | 1.9 | 1.6 | 1 | 0.2 | -0.6 | -1.2 | -1.7 |
Tide / Current Tables for Port San Luis Wharf, California
EDIT (on/off) Help One Week of DataPort San Luis Wharf
Click for Map
Fri -- 04:42 AM PDT 2.99 feet High Tide
Fri -- 06:28 AM PDT Sunrise
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:11 AM PDT 2.50 feet Low Tide
Fri -- 01:54 PM PDT Moonset
Fri -- 04:24 PM PDT 4.68 feet High Tide
Fri -- 07:41 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 04:42 AM PDT 2.99 feet High Tide
Fri -- 06:28 AM PDT Sunrise
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:11 AM PDT 2.50 feet Low Tide
Fri -- 01:54 PM PDT Moonset
Fri -- 04:24 PM PDT 4.68 feet High Tide
Fri -- 07:41 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 2 | 2.2 | 2.5 | 2.8 | 3 | 3 | 2.9 | 2.7 | 2.6 | 2.5 | 2.6 | 2.8 | 3.1 | 3.6 | 4.1 | 4.4 | 4.7 | 4.6 | 4.4 | 3.9 | 3.3 | 2.6 | 2 | 1.6 |
Weather Map and Satellite Images
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GOES 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 (6,6,7,8)
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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 numerious 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. |