Saturday, April4, 2020
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Marine Weather and Tides
Salmon Creek, 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 6:48AMSunset 7:38PM Saturday April 4, 2020 8:04 AM PDT (15:04 UTC) Moonrise 2:47PMMoonset 4:07AM Illumination 88% Phase: Waxing Gibbous; Moon at 11 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 349 Am Pdt Sat Apr 4 2020
.small craft advisory in effect Sunday morning...
Today..SW winds 10 to 20 kt. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 8 seconds and S around 2 ft at 14 seconds. Rain.
Tonight..SW winds 10 to 20 kt with gusts up to 30 kt after midnight. Wind waves 3 to 4 ft. W swell 4 to 5 ft at 10 seconds and S around 2 ft at 14 seconds. Rain.
Sun..W winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 4 ft. W swell 4 to 6 ft at 10 seconds and S around 2 ft at 13 seconds. A chance of rain.
Sun night..NW winds up to 10 kt. Wind waves 1 to 2 ft. W swell 4 to 5 ft at 9 seconds and S around 2 ft at 13 seconds. A chance of rain.
Mon..N winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 5 ft at 9 seconds and S around 2 ft at 13 seconds. A chance of rain.
Mon night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 9 seconds and S around 2 ft at 13 seconds.
Tue..NW winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft and S 2 to 3 ft.
Wed..NW winds up to 10 kt. Wind waves 1 ft. W swell around 7 ft and S 2 to 3 ft.
PZZ500 349 Am Pdt Sat Apr 4 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds will shift to southwesterly as a warm front moves eastward over the coastal waters and bays today. The warm front will move to the north central coast tonight and become replaced by a cold upper level low and cold front from the gulf of alaska on Sunday. Wet weather will develop today and continue into early next week. High pressure will bring a return of drier weather by the middle of next week. A prevailing moderate northwesterly swell will last through much of the forecast period.


7 Day Forecast for Marine Location Near Salmon Creek, CA
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location: 38.33, -123.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 041212 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 512 AM PDT Sat Apr 4 2020

SYNOPSIS. Forecast remains on track with North Bay rain this morning spreading over the Bay Area this afternoon and reaching the Central Coast by late afternoon/evening. Rainfall today will mostly be light, though moderate at times in the North Bay. Showers overnight become a steady rain on Sunday as another system drops down the coast. Locally heavy rain, possible thunderstorms and gusty winds during the day Sunday. Precipitation becomes showers Sunday night into Monday as the upper low passes over the region. Showers may linger for the Central Coast Tuesday and Wednesday as the upper low slowly exits the region followed by a warming and drying trend for the second half of next week.

DISCUSSION. as of 3:41 AM PDT Saturday . Forecast remains on track early this morning with no big changes in timing or intensity of incoming storms. Rain has reached the north coast with Arcata reporting light rain. We are just starting to get some returns on radar off the Mendocino/Sonoma coast. Short term models bring rain onshore between 14-16z then spreading southward over the Bay Area through the day before reaching the Central Coast late afternoon/evening hours. This initial storm wont pack too much punch and mainly expecting light rainfall today as the main energy passes to our north. Scattered showers overnight will become a steady rain by Sunday morning as a deeper trough drops down the coast. There will be better jet dynamics with diffluence aloft, steeper lapse rates and a more well defined surface boundary with stronger surface forcing and upslope flow to produce some locally heavy rain. The boundary looks fairly progressive on Sunday and last few model runs have focused heaviest rains from the Santa Cruz mtns southward to the Santa Lucia range above Big Sur. This is not an atmospheric river but rather a cold core system so rain totals of around 0.75-1.50 inches for the valleys with 2-3 inches for the hills when all is said and done. Most of the climate sites around the Bay Area are running 40-50% of normal so this will be one last chance to put some dents into the season rainfall deficits. Last few model runs have kept the core of the upper low and thus the associated cold air farther offshore. This has reduced t-storm chances on the model solutions though some isolated t-storms later Sunday afternoon through Monday afternoon will still be possible.

Precip will turn showery on Sunday night as the main surface boundary moves through. Shower chances stay in the forecast Monday but if the 06z nam is right the best forcing stays offshore and activity looks to be scattered at best with the higher terrain of the Central Coast the most likely location for some t-storms on Monday. Snow levels aren't as low as previously forecast due to the upper low staying offshore. On Sunday when the steady precip fall the snow levels stay well above 4000 feet, then lowering to around 3500 feet by Monday when precip becomes more showery.

Shower chances linger for the Central Coast on Tuesday with the upper low over Southern California. The operational ECMWF would keep shower threat going into Weds with slow moving low but Blend of Models suggest we should see drying by Weds with a ridge building by Thursday and Friday.

AVIATION. as of 5:12 AM PDT Saturday . For 12Z TAFs. VFR to MVFR ceilings and visibilities with light rain developing today. Showery weather develops tonight and Sunday with a cold upper level low arriving from the Gulf of Alaska. Strong and gusty winds developing Sunday morning per recent statistical guidance.

Vicinity of KSFO . VFR, tempo light rain 15z-18z with ceilings gradually lowering to MVFR today. Wind from the southwest today. South to southeast tonight and Sunday and strengthening per recent statistical guidance, could get close to airport weather warning criteria near 35 knots.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR to MVFR ceilings, light rain developing late morning to afternoon. MVFR ceilings later today, tonight and Sunday morning.

MARINE. as of 5:01 AM PDT Saturday . Winds will shift to southwesterly as a warm front moves eastward over the coastal waters and bays today. The warm front will move to the north Central Coast tonight and become replaced by a cold upper level low and cold front from the Gulf of Alaska on Sunday. Wet weather will develop today and continue into early next week. High pressure will bring a return of drier weather by the middle of next week. A prevailing moderate northwesterly swell will last through much of the forecast period.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 9 AM



PUBLIC FORECAST: RWW AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 14 mi34 min SE 5.8 G 7.8 51°F1012.4 hPa
46214 - Point Reyes, CA (029) 35 mi34 min 52°F4 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi34 min S 3.9 G 3.9 51°F 52°F1013.5 hPa
46237 - San Francisco Bar, CA (142) 44 mi64 min 55°F3 ft
RCMC1 - 9414863 - Richmond, CA 44 mi64 min SW 4.1 G 7 51°F 57°F1012.9 hPa (-0.8)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi60 min SSE 1 49°F 1013 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi64 min WSW 8.9 G 12 51°F 1012.7 hPa (-0.7)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 47 mi64 min SW 9.9 G 13 51°F 1013.4 hPa (-0.9)
FTPC1 - 9414290 - San Francisco, CA 48 mi64 min 58°F

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA18 mi71 minN 010.00 miLight Rain42°F39°F92%1012.2 hPa
Petaluma Municipal Airport, CA24 mi69 minN 010.00 miOvercast46°F44°F93%1013.2 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrS33N9NE55N6NW5S7S7N8NW10W5CalmNW5CalmSE4CalmSE3S3CalmCalmCalmCalmCalm
1 day agoN8N6NW6NW3CalmCalm--SW8----NW9NW8NW9NW6CalmSW3CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoN11N11N10N9NW10NW10
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NW10NW10N7N8N9N8N8N9N9N6N10N7N6

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
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Sat -- 02:47 AM PDT     2.44 feet Low Tide
Sat -- 05:06 AM PDT     Moonset
Sat -- 06:51 AM PDT     Sunrise
Sat -- 08:20 AM PDT     5.34 feet High Tide
Sat -- 03:17 PM PDT     -0.30 feet Low Tide
Sat -- 03:46 PM PDT     Moonrise
Sat -- 07:38 PM PDT     Sunset
Sat -- 10:01 PM PDT     4.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.632.62.52.83.44.24.95.35.24.63.62.31.10.2-0.3-0.10.51.52.73.84.64.94.7

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Sat -- 12:36 AM PDT     -0.77 knots Max Ebb
Sat -- 04:01 AM PDT     0.00 knots Slack
Sat -- 05:08 AM PDT     Moonset
Sat -- 06:47 AM PDT     0.81 knots Max Flood
Sat -- 06:52 AM PDT     Sunrise
Sat -- 09:35 AM PDT     -0.00 knots Slack
Sat -- 12:45 PM PDT     -1.37 knots Max Ebb
Sat -- 03:47 PM PDT     Moonrise
Sat -- 04:35 PM PDT     0.00 knots Slack
Sat -- 07:38 PM PDT     1.19 knots Max Flood
Sat -- 07:40 PM PDT     Sunset
Sat -- 10:51 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.8-0.6-0.4-00.40.70.80.60.3-0.2-0.8-1.3-1.4-1.2-0.8-0.30.30.81.11.210.5-0.1

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    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 San Francisco/Monterey Bay Area, CA (11,2,3,4)
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Ground Weather Radar Station Sacramento, 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.