Wednesday, February19, 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 6:55AMSunset 5:54PM Wednesday February 19, 2020 5:42 AM PST (13:42 UTC) Moonrise 4:37AMMoonset 2:17PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 237 Am Pst Wed Feb 19 2020
Today..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. NW swell 3 to 5 ft at 13 seconds and sw around 2 ft at 16 seconds.
Tonight..NW winds up to 10 kt. Wind waves 2 to 3 ft. NW swell 3 to 4 ft at 13 seconds and sw around 2 ft at 16 seconds.
Thu..N winds up to 10 kt. Wind waves 1 ft. NW swell 3 to 4 ft at 15 seconds and sw around 2 ft at 15 seconds.
Thu night..N winds up to 10 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 14 seconds and sw around 2 ft at 15 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 6 to 7 ft at 15 seconds and sw around 2 ft at 15 seconds.
Fri night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 5 to 7 ft at 14 seconds.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. NW swell 5 to 7 ft.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. NW swell 10 to 12 ft.
PZZ500 237 Am Pst Wed Feb 19 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northwest winds are forecast to prevail over the waters today. A weakening cold front and upper level trough will approach the offshore waters late week that may result in a few isolated showers. A moderate northwest swell will persist through the week along with a light southerly swell.


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 191128 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 328 AM PST Wed Feb 19 2020

SYNOPSIS. Unseasonably mild and dry conditions are likely to persist over much of the region through the forecast period. The only chance of precipitation will be over the Central Coast Friday into Saturday with the potential for isolated showers, yet widespread rainfall is unlikely.

DISCUSSION. as of 03:05 AM PST Wednesday . The return of onshore flow along the coast during the past 12 hours or so has allowed for an increase in boundary layer moisture. As a result, low clouds and patchy fog have developed locally inland across the Sonoma Valley, along the San Francisco Peninsula and around the Monterey Bay. Expecting these clouds to continue to become more widespread along the coast and adjacent coastal valleys through the morning per trends in satellite imagery. This will keep temperatures from falling much below the lower/middle 40s while clear conditions across the interior will allow for temperatures to bottom out in the middle/upper 30s. Expecting this pattern to also allow for slightly cooler conditions near the coast this afternoon while interior locations again warm into the middle/upper 60s with a few lower 70s possible.

Not expecting much change heading into Thursday with conditions to be similar to today, night/morning low clouds near the coast and across the adjacent coastal valleys with warmer afternoon temperatures across the interior. By late week, a mid/upper level cut-off low will develop off of the northern California coast within a deepening trough. The developing mid/upper level low will then drop southward before ejecting eastward toward the southern California coast. As this occurs, moisture will wrap around the low and advect inland over portions of the Central Coast late Friday into Saturday. With this, cannot rule out isolated showers over portions interior portions of the Central Coast, mainly Monterey and San Benito Counties. However, widespread rainfall is unlikely with any precipitation being light and isolated in nature.

The aforementioned system will then exit the region this weekend as another mid/upper level trough drops into the Pacific Northwest. Forecast models have all trended much drier for our region as this system stays well to our north with ridging expected to build offshore. Thus, ongoing dry weather conditions with temperatures above seasonal averages are likely to continue heading into early next week.

AVIATION. as of 3:28 AM PST Wednesday . For 12Z TAFs. Infrared satellite imagery shows a several areas of low clouds that have developed overnight, impacting locations such as Santa Rosa, the San Mateo County Coast, and the Monterey Peninsula. Could see some additional low cloud development between now and sunrise, but not anticipating widespread. Generally light winds are expected today at the terminals.

Vicinity of KSFO . Low clouds have thus far remained on the western half of the San Bruno Gap away from the terminal. There may be some additional low cloud development between now and sunrise, but confidence is low. Light winds this morning will become west to northwest this afternoon around 10 kt.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Areas of low clouds continue to impact the Monterey Bay Area this morning with IFR ceilings reported at MRY. The stratus may expand southward into the Salinas Valley and impact SNS between now and sunrise. VFR conditions will then prevail mid/late morning and through the day. Light offshore winds this morning will become onshore later today.

MARINE. as of 3:05 AM PST Wednesday . Light northwest winds are forecast to prevail over the waters today. A weakening cold front and upper level trough will approach the offshore waters late week that may result in a few isolated showers. A moderate northwest swell will persist through the week along with a light southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. None.

PUBLIC FORECAST: RGass AVIATION: Rowe MARINE: Rowe

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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 mi43 min NW 14 G 18 51°F1018.7 hPa (+0.0)
46214 - Point Reyes, CA (029) 35 mi43 min 51°F6 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi33 min NNW 9.7 G 12 50°F 53°F1019.2 hPa
46237 - San Francisco Bar, CA (142) 44 mi43 min 53°F4 ft
RCMC1 - 9414863 - Richmond, CA 44 mi55 min 47°F 54°F1018.3 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi44 min W 1.9 45°F 1018 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi55 min 47°F 1018.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 47 mi55 min 51°F 1018.9 hPa
FTPC1 - 9414290 - San Francisco, CA 48 mi61 min 49°F 54°F1018.8 hPa

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 mi50 minN 00.25 miFog36°F36°F100%1018.2 hPa
Petaluma Municipal Airport, CA24 mi88 minN 00.25 miFog41°F41°F100%1019 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrCalmCalmCalmCalmNW3CalmCalmCalmSE4SE3S7W6S5SE5S3CalmCalmCalmN3CalmNW3CalmCalmCalm
1 day agoN4N7NW4N9N10N7NW9N6NW5NW3N4W8W8CalmCalmW3CalmW4SE3CalmNW3CalmCalmNW4
2 days agoCalmS3CalmNW10N12NW9N8SW6S8S7S7SE7SE4CalmS3N4CalmCalmNW3NW4NW3NW4N3N6

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Wed -- 01:49 AM PST     3.05 feet Low Tide
Wed -- 04:36 AM PST     Moonrise
Wed -- 06:58 AM PST     Sunrise
Wed -- 07:30 AM PST     5.89 feet High Tide
Wed -- 02:17 PM PST     Moonset
Wed -- 02:54 PM PST     -0.24 feet Low Tide
Wed -- 05:54 PM PST     Sunset
Wed -- 09:45 PM PST     4.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.53.13.13.33.94.65.35.85.85.34.331.70.6-0.1-0.200.71.72.83.94.54.74.4

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Wed -- 12:13 AM PST     -0.54 knots Max Ebb
Wed -- 03:00 AM PST     0.00 knots Slack
Wed -- 04:38 AM PST     Moonrise
Wed -- 05:55 AM PST     0.73 knots Max Flood
Wed -- 06:59 AM PST     Sunrise
Wed -- 08:32 AM PST     -0.00 knots Slack
Wed -- 12:03 PM PST     -1.32 knots Max Ebb
Wed -- 02:18 PM PST     Moonset
Wed -- 03:57 PM PST     0.00 knots Slack
Wed -- 05:55 PM PST     Sunset
Wed -- 07:11 PM PST     1.11 knots Max Flood
Wed -- 10:16 PM PST     -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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-0.5-0.5-0.3-00.40.70.70.60.3-0.3-0.8-1.2-1.3-1.3-1-0.600.60.91.110.70.1-0.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (8,2,3,4)
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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.