Saturday, July11, 2020
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Marine Weather and Tides
Inverness, 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 5:55AMSunset 8:36PM Saturday July 11, 2020 2:31 PM PDT (21:31 UTC) Moonrise 11:45PMMoonset 11:18AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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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PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 903 Am Pdt Sat Jul 11 2020
.small craft advisory in effect until 3 pm pdt this afternoon...
Today..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 4 to 6 ft at 8 seconds and S up to 2 ft at 12 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 4 to 6 ft at 8 seconds and S up to 2 ft at 12 seconds.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 5 to 7 ft at 8 seconds and S up to 2 ft at 16 seconds.
Sun night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 8 seconds and S up to 2 ft at 14 seconds.
Mon..W winds 5 to 15 kt. Wind waves 2 to 3 ft. NW swell 5 to 7 ft at 9 seconds and S up to 2 ft at 12 seconds.
Mon night..SW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 9 seconds and S up to 2 ft at 11 seconds.
Tue..S winds up to 10 kt. Wind waves 1 ft. NW swell 3 to 5 ft and S up to 2 ft.
Wed..S winds up to 10 kt. Wind waves 1 ft. NW swell 3 to 5 ft and S up to 2 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 6 ft with dominate swell period of 8 seconds. Across the bar...seas 5 to 7 ft with dominate swell period of 8 seconds. Maximum ebb current of 1.8 kt at 09:55 am Saturday and 1.5 kt at 10:55 pm Saturday.
PZZ500 903 Am Pdt Sat Jul 11 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate locally gusty northwest winds through the weekend. These winds will generate steep fresh wind driven northwest swell which will result in hazardous conditions for small craft vessels in the coastal waters. Otherwise, a light longer period south swell will be mixed in with the steep fresh northwest swell.


7 Day Forecast for Marine Location Near Inverness CDP, CA
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location: 38.11, -122.87     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 112102 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 202 PM PDT Sat Jul 11 2020

SYNOPSIS. High pressure will dominate the weather pattern over the region this weekend resulting in very warm temperatures across the interior. Continued onshore flow will keep conditions near the coast cooler, yet still mild. A subtle cooling trend is on track to occur early next week.

DISCUSSION. as of 02:02 PM PDT Saturday . Marine layer has become nearly non-existent with the remainder of it having either dissipated over the Monterey Peninsula or traveled down to coastal southern Monterey county. Diurnal heating has resulted in temps up in the low-to-mid-90s around the East Bay, with locations within the Livermore Valley reporting temps between 92-97 F. A fire broke out due east of San Jose earlier today, where southwest winds and temps between 85-95 F have been prevalent. Thankfully, winds have remained light at 3-8 mph with gusts of 13 mph in that area, and the fire is fully contained at the time of this discussion's release. Similarly, low-to-mid RH values coupled with high temperatures can be found in other locations across the CWA, including interior portions of Monterey and San Benito counties and patches of the North Bay interior. Warm conditions and RH values in the 20s and low 30s are expected across that area going into the evening, with some isolated locations likely to record RH values in the teens. Thankfully, winds will remain light due to the upper-level ridge set up, but fire concerns will persist through tonight and going into Sunday.

The main focus for tonight's conditions will be the warmth and the low RH values across the interior. Minimum temps across several high-elevation locations remained fairly warm last night, with several sites along the East Hills reporting low-70s. We should expect for similar poor temperature recoveries across the interior tonight, along with poor humidity recoveries as the ridge reaches its maximum extent during the overnight hours and into early Sunday morning.

Sunday will be our warmest day across the CWA, with mild conditions dominating coastal areas tomorrow as the marine layer remains compressed and allows for greater diurnal heating. Temps along the coast will fall within the 65-75 F range. The interior is progged for much higher temps ranging from 95-100, with some isolated locations getting into the low 100s. Weak onshore flow is to be expected tomorrow as well, which will help to mitigate fire weather concerns. Models are suggesting that the stable conditions from the upper-level ridge will result in weak offshore flow. Nevertheless, the poor humidity recoveries along with warm mins overnight will still result in elevated fire weather and heat concerns for the day.

Looking ahead into next week, heights will fall across the CWA as the upper-level ridge weakens and allows for the intrusion of a disturbance off the Pacific into BC. Troughing will gradually become the more dominating upper-level pattern during the first half of next week, allowing for temperatures will return closer to seasonal averages. This disturbance will also allow for the marine layer to recover, bringing coastal locations back to more seasonal conditions as well. Expect the main setup for next week to be the cooling pattern as we see the gradual shift in our upper-level setup as the ridge weakens and makes its way out of the southwest as this trough takes over.

AVIATION. as of 10:45 AM PDT Saturday . Widespread VFR with only a few hints of the marine layer left along the Marin headlands and offshore of the San Francisco Peninsula. Generally light onshore winds are prevailing this morning but will give way to moderate onshore winds, particularly through coastal gaps such as near KSFO, through the remainder of the day. For tonight, a compressed marine layer may bring a few clouds along the coast and bayshore, but otherwise VFR is expected. Tomorrow will see similar moderate onshore winds and VFR conditions as well.

Vicinity of KSFO . VFR, west to northwest wind increasing to 20 to 25 knots by early afternoon. Gusts should be infrequent but may approach 30kt if they develop. Wind easing tonight and Sunday morning but pick up again Sunday afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR today. Calm winds shifting to west to northwest 10 to 15 knots by early afternoon. Generally VFR tonight though a few patches of low BKN/OVC clouds may develop late into the night for a few hours near KMRY/KWVI.

MARINE. as of 10:38 AM PDT Saturday . Moderate locally gusty northwest winds through the weekend. These winds will generate steep fresh wind driven northwest swell which will result in hazardous conditions for small craft vessels in the coastal waters. Otherwise, a light longer period south swell will be mixed in with the steep fresh northwest swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm until 9 PM



PUBLIC FORECAST: Diaz AVIATION: DRP MARINE: DRP

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi22 min NW 16 G 19 54°F 54°F1017.8 hPa52°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 25 mi22 min NW 19 G 23 53°F 49°F1017.1 hPa51°F
46237 - San Francisco Bar, CA (142) 26 mi32 min 62°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi40 min SSE 7 70°F 1016 hPa (-1.0)
RCMC1 - 9414863 - Richmond, CA 28 mi44 min S 5.1 G 7 68°F 65°F1015.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 30 mi44 min SSW 11 G 16 63°F 1016.6 hPa
FTPC1 - 9414290 - San Francisco, CA 30 mi44 min WSW 9.9 G 14 61°F 65°F1017.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 32 mi44 min WSW 6 G 8.9 75°F 1015.2 hPa
PXSC1 33 mi44 min 70°F 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi44 min WSW 5.1 G 12 70°F 1015.6 hPa
46214 - Point Reyes, CA (029) 34 mi36 min 50°F8 ft
OKXC1 - 9414776 - Oakland (Berth 34), CA 35 mi44 min WNW 7 G 8.9 67°F 1016.4 hPa
OBXC1 35 mi44 min 67°F 56°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 36 mi44 min W 8.9 G 9.9
LNDC1 38 mi44 min W 2.9 G 5.1 74°F 1016.4 hPa
AAMC1 - 9414750 - Alameda, CA 38 mi44 min W 7 G 9.9 71°F 71°F1016.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 40 mi44 min NW 12 G 16 85°F 72°F1014.9 hPa
UPBC1 40 mi44 min NW 14 G 16
PCOC1 - 9415144 - Port Chicago, CA 44 mi44 min W 8.9 G 9.9 84°F 72°F1014.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 45 mi47 min W 8

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petaluma Municipal Airport, CA17 mi37 minWNW 710.00 miFair91°F55°F30%1015.6 hPa
Novato / Gnoss Field, CA17 mi57 minVar 510.00 miFair93°F57°F30%1015.2 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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Last 24hrSE9SW13SW11S9S5E5CalmN6NW6N3CalmCalmCalmCalmCalmCalmCalmN4CalmCalm5SE44
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5E6E3NE4N6CalmCalmCalmN5N6NW3CalmCalmCalmCalmCalmCalmSE755
2 days agoSW13SW13SW12S9S63E4E3CalmNW3CalmCalmCalmCalmCalmCalmN5CalmCalmCalmCalm5E6Calm

Tide / Current Tables for Inverness, Tomales Bay, California
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Inverness
Click for Map
Sat -- 12:13 AM PDT     2.43 feet Low Tide
Sat -- 12:19 AM PDT     Moonrise
Sat -- 04:49 AM PDT     3.84 feet High Tide
Sat -- 05:58 AM PDT     Sunrise
Sat -- 12:00 PM PDT     0.56 feet Low Tide
Sat -- 12:18 PM PDT     Moonset
Sat -- 06:28 PM PDT     4.52 feet High Tide
Sat -- 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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2.42.52.93.33.73.83.73.22.51.81.20.70.60.81.42.33.344.54.54.23.83.22.7

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 12:19 AM PDT     Moonrise
Sat -- 02:10 AM PDT     0.51 knots Max Flood
Sat -- 04:57 AM PDT     -0.00 knots Slack
Sat -- 05:59 AM PDT     Sunrise
Sat -- 07:58 AM PDT     -0.91 knots Max Ebb
Sat -- 11:49 AM PDT     0.00 knots Slack
Sat -- 12:19 PM PDT     Moonset
Sat -- 02:51 PM PDT     0.77 knots Max Flood
Sat -- 06:12 PM PDT     -0.00 knots Slack
Sat -- 08:36 PM PDT     Sunset
Sat -- 08:43 PM PDT     -0.71 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.40.50.50.3-0-0.4-0.8-0.9-0.8-0.5-0.30.10.40.70.80.70.50.1-0.3-0.7-0.7-0.6-0.4

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 (17,4,5,8)
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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.