Tuesday, July14, 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 5:57AMSunset 8:35PM Tuesday July 14, 2020 4:12 PM PDT (23:12 UTC) Moonrise 12:35AMMoonset 2:11PM Illumination 29% Phase: Waning Crescent; Moon at 24 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- 301 Pm Pdt Tue Jul 14 2020
Rest of today..W winds 5 to 10 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 9 seconds and S around 2 ft at 11 seconds.
Tonight..SW winds 5 to 15 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 9 seconds and S around 2 ft at 11 seconds.
Wed..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 10 seconds.
Wed night..S winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds. Patchy fog.
Thu..S winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds. Patchy fog.
Thu night..W winds up to 10 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 10 seconds.
Fri..W winds 5 to 15 kt. Wind waves 1 ft. NW swell 4 to 6 ft and S around 2 ft.
Sat..SW winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft. Patchy fog.
PZZ500 301 Pm Pdt Tue Jul 14 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak surface low off the san mateo coast is resulting in split flow with light southerly winds along the immediate coastline and stronger northwest winds in the outer waters. Winds will increase over the northern san francisco bay during the afternoon and evening hours. This pattern is expected to continue through Thursday.


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 142106 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 206 PM PDT Tue Jul 14 2020

SYNOPSIS. A few additional degrees of inland cooling is expected on Tuesday as onshore flow increases. Temperatures will then likely remain near seasonal averages for the remainder of the week and into the upcoming weekend along with the ebb and flow of overnight and morning low clouds.

DISCUSSION. as of 02:05 PM PDT Tuesday . Feels more like "summer" this afternoon as low clouds hug the coast and sunshine blankets the interior. Temperatures on the other hand are several degrees below seasonal averages for late July. Highs will top out in the upper 70s to lower 90s away from the coast, but much cooler at the coast with upper 50s to 60s. Latest 24 hour trend shows many of these temperatures will fall with in a few degrees of Monday's values.

For tonight - marine layer will make its nightly march inland, possibly covering a few more interior valleys than this morning. Fire weather concerns will still lingering above the marine layer, especially the higher peaks with mild temperatures, poor humidity recoveries, and crispy fine fuels.

Wednesday will feature another day of morning low clouds retreating to the coast with inland sunshine. Only minor differences in the temperatures with highs on Wednesday with below seasonal averages.

One thing to keep an eye on Wednesday/Thursday will be a developing upper low off the SoCal coast as high pressure remains well to the east. This orientation will allow for some monsoonal moisture to sneak up the Sierra Crest through out these two days. Neighboring offices to the east have a mention for afternoon thunderstorms over the Crest on Wednesday. More moisture and more widespread chances for thunderstorms develop Thursday afternoon over the Sierra Nevada. So what does these mean locally? No chance for thunderstorms at this point, but a few models bring some upper level instability/moisture to the North and East Bay. The net result will be a slight uptick in overnight humidity recoveries and possible afternoon cu.

Upper level high pressure begins to nose westward Friday and over the weekend. The building 500mb heights will likely compress the marine layer a tad, but not completely squash it. The building high pressure will also lead to a slight warming trend across the interior.

AVIATION. as of 11:00 AM PDT Tuesday . A surface eddy between the Farallon Islands and Point Reyes is resulting in a weak south to southwest feed along the coast. This resulted in an unusual stratus pattern early this morning but as of late this morning it looks more familiar with stratus along the coast with a thicker layer in and around the Monterey Bay. As such, widespread VFR except at Monterey Bay terminals. Breezy to locally gusty onshore (W-SW) winds today near coastal gaps. For tonight, expecting a similar stratus intrusion except with more of a push into the North Bay to include KSTS and slightly more compressed (lower cigs) into the night. KSFO/KOAK will be on the boundary overnight but expecting predominately VFR at KSFO with borderline MVFR/IFR at KOAK. KSJC/KLVK should remain clear through the period.

Vicinity of KSFO . VFR today. Breezy onshore winds. Stratus should remain just north of KSFO again tonight with WSW flow though KOAK will likely be under OVC being just that more northward than KSFO.

SFO Bridge Approach . Similar to KSFO except in an even drier slot with less chance of low clouds overnight tonight.

Monterey Bay Terminals . Marine layer is eroding northward from the Salinas Valley late this morning and may lift away from KMRY midday however intermittent SCT/BKN is expected thru midday as WSW reinforced marine layer into the vicinity. KWVI/Santa Cruz under OVC all day given deep offshore reinforcing component and flow direction. Breezy to infrequently onshore winds this afternoon. IFR cigs return tonight for KSNS/KMRY.

MARINE. as of 10:51 AM PDT Tuesday . A weak surface low off the San Mateo coast is resulting in split flow with light southerly winds along the immediate coastline and stronger northwest winds in the outer waters. Winds will increase over the northern San Francisco Bay during the afternoon and evening hours. This pattern is expected to continue through Thursday.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm until 6 PM SCA . SF Bay until 9 PM



PUBLIC FORECAST: MM AVIATION: DRP MARINE: DRP

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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 mi42 min S 5.8 G 7.8 52°F 51°F1014.1 hPa51°F
46214 - Point Reyes, CA (029) 35 mi46 min 51°F6 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi42 min S 12 G 14 54°F 55°F1014.9 hPa52°F
46237 - San Francisco Bar, CA (142) 44 mi42 min 56°F4 ft
RCMC1 - 9414863 - Richmond, CA 44 mi72 min 65°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi68 min SW 14 60°F 1013 hPa
FTPC1 - 9414290 - San Francisco, CA 48 mi72 min 64°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 mi79 minSSW 108.00 miFair with Haze79°F55°F45%1011.4 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrS9SE11S8S7SE6S4SE4CalmCalmCalmCalmCalmCalmCalmCalmS3S4S6344S7S10S10
1 day agoS9S8S5S5S5S5S5S4S4CalmS4CalmS3S3CalmCalmS5Calm4SE7S11
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2 days agoS11SE13SE7S9S5S3CalmS3S3S3CalmCalmCalmCalmCalmCalmCalmCalmS43S6S10S8SE9

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Tue -- 01:35 AM PDT     Moonrise
Tue -- 01:43 AM PDT     1.56 feet Low Tide
Tue -- 06:00 AM PDT     Sunrise
Tue -- 07:32 AM PDT     3.33 feet High Tide
Tue -- 12:46 PM PDT     2.33 feet Low Tide
Tue -- 03:11 PM PDT     Moonset
Tue -- 07:03 PM PDT     5.36 feet High Tide
Tue -- 08:35 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.61.61.82.22.73.13.33.33.22.92.62.42.32.63.13.84.65.15.45.24.73.93

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Tue -- 01:36 AM PDT     Moonrise
Tue -- 02:46 AM PDT     0.00 knots Slack
Tue -- 05:36 AM PDT     0.54 knots Max Flood
Tue -- 06:01 AM PDT     Sunrise
Tue -- 08:29 AM PDT     -0.00 knots Slack
Tue -- 10:41 AM PDT     -0.49 knots Max Ebb
Tue -- 02:17 PM PDT     0.00 knots Slack
Tue -- 03:12 PM PDT     Moonset
Tue -- 05:14 PM PDT     0.59 knots Max Flood
Tue -- 08:14 PM PDT     -0.00 knots Slack
Tue -- 08:37 PM PDT     Sunset
Tue -- 11:18 PM PDT     -0.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.5-0.30.10.40.50.50.40.2-0.2-0.4-0.5-0.4-0.3-0.10.20.50.60.50.40.1-0.3-0.7-0.9

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 (19,4,5,8)
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Ground Weather Radar Station Sacramento, 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.