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Marine Weather and Tides
Version 3.4 |
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. 6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported. 5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive. |
| Sunrise 6:17AM | Sunset 7:44PM | Monday April 23, 2018 2:39 AM PDT (09:39 UTC) | Moonrise 12:22PM | Moonset 1:38AM | Illumination 56% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 818 Pm Pdt Sun Apr 22 2018 Tonight..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 13 seconds. Areas of dense fog with vsby 1 nm or less after midnight. Mon..Winds variable 10 kt or less, becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 4 to 6 ft at 13 seconds. Areas of dense fog with vsby 1 nm or less in the morning. Mon night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 12 seconds. Areas of 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. NW swell 3 to 5 ft at 12 seconds. Areas of fog in the morning. Tue night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 15 seconds. Patchy fog after midnight. Wed..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 4 to 6 ft. Patchy fog in the morning. Wed night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 6 ft. Patchy fog after midnight. Thu..NW winds 15 to 20 kt. Combined seas 4 to 6 ft. Patchy fog. Fri..W winds 15 to 20 kt. Combined seas 4 to 6 ft. Patchy fog. | PZZ600 818 Pm Pdt Sun Apr 22 2018 Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1026 mb surface high was over the pac nw and a 1008 mb low was over southern nevada. A trough of low pressure was along the southern california coast. A shallow marine inversion may bring patchy dense fog across the coastal waters later tonight into Mon morning. |
7 Day Forecast for Marine Location Near Cayucos, CA
Hourly EDIT Helplocation: 35.43, -120.88 debug
Area Discussion for - Los Angeles/Oxnard, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 klox 230729 afdlox area forecast discussion... Updated national weather service los angeles oxnard ca 1229 am pdt Mon apr 23 2018 Synopsis 22 901 pm. There will be overnight and morning coastal low clouds and fog for several days this coming week otherwise conditions will be warm and dry. Temperatures will cool a bit Friday and Saturday as a weak weather system moves across the region. Short term (mon-thu) 22 900 pm. Weak upper-level ridging remains over the area this evening and will continue to linger into Monday. Despite 500 mb heights climbing slightly, onshore flow is progged to and is strengthening tonight as southwest flow aloft establishes. 950 mb temperatures should cool slightly and allowing for a cooling trend to continue into Monday. Ridging aloft will gradually break down through Monday night. A disturbance near 40n and 150w is slated to break off of a trough in the gulf of alaska Monday, then this trough will slowly move towards the california coast through late this week. Onshore flow should gradually increase through this week, continuing a cooling trend and a more persistent marine layer and better organized marine layer stratus. A shallow marine layer depth this evening could bring patchy dense fog to the coast tonight, but the marine layer depth should deepen overnight allowing for less dense fog on Monday morning. Some intrusion is possible into the lower valley areas late tonight and early Monday morning. *** from previous discussion *** Long term (fri-mon) 22 125 pm. Large upper level low pressure system will be spinning off the northern california coast by Thursday. Latest 12z GFS model trending further northward (similar to ECMWF model) with moving this low pressure system inland Friday night into Saturday. As a result, keeping pops below 15 percent in the Friday night Saturday time frame seems reasonable for now across our area, as most of the moisture and energy with this system is projected to remain well north. Also of note, the latest gfs |
ensembles also trending much drier with this system for our area. The main impact of this system will be gusty west to northwest winds across the region along with a cooling trend. Aviation 23 0600z. At 06z at klax, the marine layer was 700 feet deep. The top of the inversion was near 2400 feet with a temperature near 23 c, low confidence in coastal TAF (high confidence in the inland tafs) at the coast stratus will form haphazardly. There is a 30 percent chc of 1 4sm fg from 10z-16z at all coastal sites. CIGS and vis may bounce between lifr and ifr levels. There is a 20 percent chc of no clearing at all. Klax... Low confidence in taf. There is a 30 percent chc of 1 4sm fg from 10z-16z. CIGS and vis may bounce between lifr and ifr levels. There is a 20 percent chc of no afternoon clearing. Kbur... Good confidence in the taf, except for a 20 percent chance of MVFR visibility between 12z and 16z. Marine 22 742 pm. Generally high confidence in the current forecast. Gusty NW winds to small craft advisory (sca) level are expected over outer water zone pzz670 through late tonight. Otherwise, winds and seas are expected to remain largely below small craft advisory (sca) levels tonight through Thursday across the coastal waters. There is a 50%-60% chance of SCA winds developing on Fri for much of the coastal waters. A shallow marine inversion may generate some patchy dense fog later tonight into Monday morning across the coastal waters. Lox watches warnings advisories Ca... None. Pz... Small craft advisory in effect until 3 am pdt early this morning for zone 670. (see laxmwwlox). Hazard potential outlook (thu-mon) No significant hazards expected. Public... Hall gomberg aviation... Rorke marine... Smith synopsis... Kj 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 |
| 46215 - Diablo Canyon, CA (076) | 16 mi | 42 min | 54°F | 6 ft | ||||
| PSLC1 - 9412110 - Port San Luis, CA | 19 mi | 57 min | NNW 1 G 2.9 | 52°F | 56°F | 1015.2 hPa | ||
| CPXC1 | 19 mi | 37 min | N 2.9 G 4.1 | 50°F | 1015.1 hPa | 48°F | ||
| 46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA | 34 mi | 49 min | NW 9.7 G 12 | 54°F | 53°F | 7 ft | 1014.6 hPa (-0.4) |
Wind History for Port San Luis, CA
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | |
| Last 24hr | N | -- | NW | N | -- | NE | NE | NE | N | E | E | NE | NE | S | N | SE | SE | S G5 | E | SW | W | W | NW | -- |
| 1 day ago | SE | NW | -- | N | N | NW | E | SE | SE | NW | S | N | NE | E | NE | N | E | N | E | NW | -- | -- | NW | N |
| 2 days ago | N | SW | E | N | N | NE | E | W | E | W | W | W | W G21 | W | NW | SE | W | NW | SE G7 | N | W |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA | 18 mi | 43 min | NW 4 | 0.25 mi | Fog | 51°F | 50°F | 96% | 1014.2 hPa |
| Paso Robles Municipal Airport, CA | 22 mi | 46 min | N 0 | 10.00 mi | Fair | 51°F | 43°F | 74% | 1014 hPa |
Wind History from SBP (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | |
| Last 24hr | Calm | SE | Calm | Calm | Calm | Calm | Calm | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | NW | Calm | SE | Calm | W | NW | NW |
| 1 day ago | SW | E | SE | Calm | Calm | Calm | N | Calm | NW | NW | W | NW | NW | NW | NW | NW | NW | W | Calm | NW | Calm | Calm | SE | Calm |
| 2 days ago | Calm | E | Calm | Calm | Calm | SE | Calm | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | Calm | Calm |
Tide / Current Tables for Morro Beach, Estero Bay, California
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Morro Beach Click for Map Mon -- 02:37 AM PDT Moonset Mon -- 05:03 AM PDT 4.29 feet High Tide Mon -- 06:20 AM PDT Sunrise Mon -- 12:26 PM PDT -0.24 feet Low Tide Mon -- 01:22 PM PDT Moonrise Mon -- 07:26 PM PDT 3.88 feet High Tide Mon -- 07:43 PM PDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 2.5 | 2.8 | 3.2 | 3.7 | 4.1 | 4.3 | 4.1 | 3.6 | 2.8 | 1.9 | 1 | 0.2 | -0.2 | -0.2 | 0.3 | 1 | 1.9 | 2.8 | 3.5 | 3.8 | 3.8 | 3.5 | 3 | 2.5 |
Tide / Current Tables for Avila, California
EDIT (on/off) Help One Week of Data| Avila Click for Map Mon -- 02:36 AM PDT Moonset Mon -- 04:02 AM PDT 2.00 feet High Tide Mon -- 06:20 AM PDT Sunrise Mon -- 11:28 AM PDT -2.85 feet Low Tide Mon -- 01:22 PM PDT Moonrise Mon -- 06:28 PM PDT 1.46 feet High Tide Mon -- 07:42 PM PDT Sunset Mon -- 11:48 PM PDT -0.36 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.2 | 0.7 | 1.3 | 1.8 | 2 | 1.8 | 1.3 | 0.4 | -0.6 | -1.6 | -2.4 | -2.8 | -2.8 | -2.3 | -1.5 | -0.5 | 0.4 | 1.1 | 1.4 | 1.4 | 1.1 | 0.6 | 0.1 | -0.3 |
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 (5,6,7,8)
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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. |