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Marine Weather and Tides
Jenner, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:19AMSunset 4:52PM Saturday December 14, 2019 10:16 PM PST (06:16 UTC) Moonrise 7:35PMMoonset 9:43AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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- 804 Pm Pst Sat Dec 14 2019
.small craft advisory in effect through Sunday evening...
Tonight..NW winds 20 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 9 to 11 ft at 16 seconds. A chance of rain this evening. A slight chance of rain after midnight.
Sun..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. W swell 9 to 11 ft at 15 seconds.
Sun night..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. NW swell 9 to 11 ft at 15 seconds.
Mon..SE winds up to 10 kt. Wind waves 1 ft. W swell 7 to 9 ft at 14 seconds.
Mon night..E winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 14 seconds.
Tue..E winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 6 to 8 ft at 15 seconds. A chance of rain.
Tue night..SE winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 19 seconds. A chance of rain.
Wed..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 11 to 13 ft. A chance of rain.
Thu..S winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 10 ft. A chance of rain.
PZZ500 804 Pm Pst Sat Dec 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Scattered showers will continue tonight across the waters as a weak cold front moves through the region. Northwest winds will increase into tomorrow as a coastal trough develops over southern california while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through tomorrow evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.


7 Day Forecast for Marine Location Near Jenner, CA
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location: 38.35, -123.35     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 150541 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 941 PM PST Sat Dec 14 2019

SYNOPSIS. Scattered showers will be ending later tonight. Cooler and drier conditions are then forecast from Sunday into early next week. Unsettled weather conditions are expected to return for the middle and latter half of next week and will potentially continue into next weekend.

DISCUSSION. as of 9:30 PM PST Saturday . An upper level low is centered off the southern Oregon coast. Cool air aloft has settled into the area as the 850 mb temperature at 00Z is 10 degrees C colder than 24 hours ago. This has destabilized the airmass generating scattered showers over the area. Some of the showers have been moderate intensity and has produced up to 1/4 inch but generally rainfall amounts have been 1/10 of an inch or less.

The low will move inland over southern Oregon later tonight. The flow over the area will switch more northerly bringing drier air and ending the showers. Models indicate lingering low level moisture Sunday so we should see a lot of cumulus clouds around. The low levels dry out Sunday night and Monday for clearing skies. With the clearing skies comes colder temperatures. Lows on Sunday night will drop into the 30s over inland areas with upper 30s to mid 40s around the bays. Patchy frost is possible.

High clouds start to increase Monday night ahead of the next system. Lows Monday night are now forecast to be a couple of degrees warmer. Mid and high clouds continue to increase on Tuesday. There is still uncertainty about rain chances Tuesday night and Wednesday. The GFS has consistently advertised rain by bringing an upper low right through the CWA. But the ECMWF has been waffling between dry and wet with the latest 12Z run taking all of the precip south of the CWA. Given the GFS has had more run-to-run consistency . it is the preferred model.

There is more agreement with the medium-range models for unsettled weather for the area next weekend.

AVIATION. as of 09:41 PM PST Saturday . For 06z TAFs. A weak frontal system is moving through bringing some light showers to the region. Showers should taper off from north to south over the next few hours. Current obs show FEW to SCT cigs between 1,000-3,000 feet with another SCT to BKN layer at 4,000-5,000 ft. Cigs will generally remain VFR aside from some patchy lower clouds overnight. Cigs will then clear out tomorrow morning and throughout the day. Overall, expect VFR conditions to prevail through the period with patchy MVFR cigs possible overnight. As skies clear out, would not be surprised to see some patchy fog around KSTS early tomorrow morning. Winds have diminished this evening with W to NW winds now around 10 kt. W to NW winds should continue to subside overnight.

Vicinity of KSFO . VFR through the period with FEW to SCT clouds between 3,000 and 5,000 ft AGL. Conditions should continue to improve throughout the day tomorrow. Breezy winds seen earlier this afternoon have weakened with W to NW winds now around 10-15 kt, which should persist overnight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mainly VFR with borderline MVFR/VFR conditions expected as showers move through. Showers will clear out later tonight. Cigs expected to lift mid to late Sunday morning. Winds have eased this evening, expect W to NW winds around 10 kt or less overnight.

MARINE. as of 08:34 PM PST Saturday . Scattered showers will continue tonight across the waters as a weak cold front moves through the region. Northwest winds will increase into tomorrow as a coastal trough develops over southern California while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through tomorrow evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Mry Bay SCA . SF Bay



PUBLIC FORECAST: W Pi AVIATION: AS MARINE: AS

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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 7 mi26 min NW 23 G 29 55°F11 ft1018.1 hPa
46214 - Point Reyes, CA (029) 29 mi16 min 56°F15 ft
PRYC1 - 9415020 - Point Reyes, CA 31 mi46 min 54°F1017.7 hPa
ANVC1 - 9416841 - Arena Cove, CA 43 mi52 min ENE 2.9 G 4.1 49°F 54°F1018 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi16 min WNW 18 G 23 53°F 1018.7 hPa (+0.6)

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, CA31 mi23 minWSW 610.00 miFair44°F41°F89%1016.7 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrNW4N4CalmSW6S3CalmSW3CalmS3CalmS3CalmNW10
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N6N5W9W9W9W8W5N6W3CalmW6
1 day agoNW3CalmSW3CalmCalmCalmN3CalmCalmCalmCalmNW4E3S4SE3CalmS4S5SW4S3SE4S6W6W6
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmW3W3CalmSE5CalmS4S3S4SE3CalmCalmCalm

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Sun -- 01:44 AM PST     4.69 feet High Tide
Sun -- 06:29 AM PST     3.00 feet Low Tide
Sun -- 07:23 AM PST     Sunrise
Sun -- 10:32 AM PST     Moonset
Sun -- 12:06 PM PST     5.85 feet High Tide
Sun -- 04:52 PM PST     Sunset
Sun -- 07:19 PM PST     -0.86 feet Low Tide
Sun -- 08:41 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.54.74.43.93.433.13.54.24.95.55.85.64.93.72.20.7-0.3-0.8-0.7-0.10.92.1

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Sun -- 02:52 AM PST     -0.00 knots Slack
Sun -- 04:59 AM PST     -0.66 knots Max Ebb
Sun -- 07:23 AM PST     Sunrise
Sun -- 07:59 AM PST     0.00 knots Slack
Sun -- 10:32 AM PST     Moonset
Sun -- 10:54 AM PST     0.68 knots Max Flood
Sun -- 01:29 PM PST     -0.00 knots Slack
Sun -- 04:53 PM PST     Sunset
Sun -- 05:07 PM PST     -1.47 knots Max Ebb
Sun -- 08:41 PM PST     Moonrise
Sun -- 08:58 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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1.10.80.4-0.1-0.5-0.7-0.5-0.300.30.60.70.50.2-0.2-0.8-1.2-1.5-1.3-0.9-0.500.51

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (1,6,7,8)
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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 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.