Wednesday, December11, 2019
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Marine Weather and Tides
Gonzales, 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 7:04AMSunset 4:51PM Tuesday December 10, 2019 9:42 PM PST (05:42 UTC) Moonrise 4:03PMMoonset 5:27AM Illumination 100% Phase: Full Moon; Moon at 14 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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PZZ535 Monterey Bay- 846 Pm Pst Tue Dec 10 2019
Tonight..SE winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft at 14 seconds and S around 2 ft at 14 seconds. A chance of showers.
Wed..NE winds up to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft at 14 seconds and S around 2 ft at 13 seconds.
Wed night..E winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 14 seconds. Patchy fog.
Thu..SE winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 20 seconds.
Thu night..SW winds around 5 kt. Wind waves 1 ft. W swell 7 to 9 ft at 18 seconds.
Fri..NW winds up to 10 kt. Wind waves 1 ft. W swell 8 to 10 ft at 17 seconds.
Fri night..NW winds around 5 kt. Wind waves 1 ft. W swell 8 to 10 ft at 17 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft.
Sun..N winds 5 to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 846 Pm Pst Tue Dec 10 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak frontal system will bring light to moderate rain to the northern waters tonight. Light to moderate southerly winds will then continue through much of the week as a series of frontal systems pass north of the area. Winds shifting to the northwest towards the weekend. A moderate northwest swell will persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.


7 Day Forecast for Marine Location Near Gonzales, CA
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location: 36.54, -121.46     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 110314 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 714 PM PST Tue Dec 10 2019

SYNOPSIS. A weak weather system will produce light rain from late today into early Wednesday, mainly in the San Francisco Bay Area and North Bay. A moist zonal flow will keep a chance of light rain in the forecast for much of the week, with the best chances across the North Bay. A system will bring another chance of rain and cooler temperatures on Saturday with dry weather returning Sunday and Monday.

DISCUSSION. as of 01:55 PM PST Tuesday . A weak storm system is approaching the California coast this afternoon and will bring light rain to the area tonight mainly north of Monterey Bay. Temperatures this afternoon across the southern portion of the forecast area have been mild in the upper 50s to middle 60s, where skies have been sunny since early this morning. Low stratus and now high clouds have kept temperatures cooler around SF Bay and the North Bay with temperatures in the middle to upper 50s. Clouds will continue to increase this afternoon ahead of the system.

KMUX radar has begun to detect a band of rainfall over the coastal waters. Light rain will move into the North Bay this afternoon and spread south to the Golden Gate and greater Bay Area this evening. The trough associated with the rain is weakening and will move through quickly. A brief period of steady light rain will become more showery overnight tonight and taper off by Wednesday morning. Rainfall totals will be light, with 0.25 to 0.5 inches across the North Bay (locally higher in the mountains), 0.1 to 0.25 across the Bay Area, and only a few hundredths of an inch south of the Santa Cruz mountains.

A moist zonal flow will develop Wednesday through the end of the week. A subtle disturbance in the flow and warm advection will bring a chance of rain mainly north of the Golden Gate on Wednesday night and Thursday. Moist onshore flow will continue into Friday with the best chance of light rain continuing across the North Bay. Rainfall through the end of the week will be light with minimal impacts. A slightly warmer airmass will also arrive with highs on Thursday in the lower to middle 60s. The moist flow will also provide for mild overnight lows, mainly in the upper 40s to lower 50s. The moist zonal flow will bring mostly cloudy skies through the week.

A shortwave trough will then move through northern California on Saturday. Currently, most of the precipitation with this system is forecast to remain to our north. The trough will bring a cooler airmass to the region on Saturday with highs dropping back into the 50s. A cool, drier northwesterly flow will develop on Sunday followed by upper level ridging early next week. A progressive pattern still looks to persist into next week, but the Euro ensemble has trended towards less amplified troughing.

AVIATION. as of 7:00 PM PST Tuesday . Approaching frontal system will bring low level moisture into the area tonight along with some light rain. MVFR cigs have appeared at STS and is working its way into SFO Bay Area. Winds will be light and generally out of the southeast. Models show low level moisture lingering through the day on Wednesday so it may remain MVFR.

Vicinity of KSFO . As precip band approaches . cigs are expected to drop gradually lower into MVFR with bases 4000-5000 ft lowering to 2000-3000 ft after 06Z. Periods of light rain through 12Z. MVFR cigs persisting through the day Wednesday. Light easterly winds becoming more southeast tonight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Low clouds off the coast of Carmel could spread into MRY after 04Z and SNS after 06Z. Low confidence on timing as it could come in later. Southeast winds around 5-10 kt with except brief west winds possible this afternoon and early evening.

MARINE. as of 07:09 PM PST Tuesday . Rain showers will impact the waters overnight, mainly north of Pigeon Point. Light to moderate southerly winds will then continue through much of the week before shifting back out of the northwest towards the weekend. A moderate northwest swell will persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 AM SCA . Pt Arena to Pt Reyes 0-10 nm from 9 PM until 3 AM



PUBLIC FORECAST: ST AVIATION: W Pi MARINE: Rowe

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MEYC1 23 mi67 min 58°F1024.8 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi43 min 57°F1 ft
ELXC1 - Elkhorn Slough Reserve, CA 24 mi58 min NNE 5.1 56°F 1025 hPa53°F
MLSC1 - Moss Landing, South Harbor, CA 25 mi81 min WSW 8 G 19 56°F 1024.7 hPa52°F
46092 - MBM1 33 mi96 min WNW 7.8 56°F 57°F1023.6 hPa (+1.9)
46239 - Point Sur, CA (157) 36 mi43 min 58°F4 ft
46114 - West Monterey Bay, CA 49 mi43 min 57°F3 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Salinas, Salinas Municipal Airport, CA11 mi50 minNW 710.00 miMostly Cloudy55°F51°F87%1025.4 hPa
Monterey Regional Airport, CA20 mi49 minWNW 810.00 miOvercast58°F50°F75%1026 hPa

Link to 5 minute data for KSNS

Wind History from SNS (wind in knots)
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Last 24hrNE4SE3SE4NE3SE8SE7E10SE8SE7SE7E5SE9SE12SE13SE12SE12SE10SE8S7NW4NW3N6N5NW7
1 day agoNW3CalmNW4CalmS3SE5CalmSE4E4SE3CalmSE5SE4SE5CalmCalmSE4E4CalmCalmW5W4CalmNW3
2 days agoSE4CalmCalm3S4S3CalmSE5SE7SE5SE3E4NE3CalmCalm3NW8W6W8W6NW4W7W4N4

Tide / Current Tables for Monterey, Monterey Harbor, California
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Monterey
Click for Map
Wed -- 02:43 AM PST     2.47 feet Low Tide
Wed -- 06:31 AM PST     Moonset
Wed -- 07:09 AM PST     Sunrise
Wed -- 08:57 AM PST     6.00 feet High Tide
Wed -- 04:19 PM PST     -0.61 feet Low Tide
Wed -- 04:46 PM PST     Moonrise
Wed -- 04:51 PM PST     Sunset
Wed -- 09:14 PM PST     Full Moon
Wed -- 11:02 PM PST     3.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.42.92.62.52.83.44.35.15.865.74.93.62.20.9-0.1-0.6-0.50.11.12.13.13.73.9

Tide / Current Tables for Elkhorn, California
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Elkhorn
Click for Map
Wed -- 02:47 AM PST     2.29 feet Low Tide
Wed -- 06:31 AM PST     Moonset
Wed -- 07:09 AM PST     Sunrise
Wed -- 09:21 AM PST     5.75 feet High Tide
Wed -- 04:32 PM PST     -0.81 feet Low Tide
Wed -- 04:45 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 09:14 PM PST     Full Moon
Wed -- 11:14 PM PST     3.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.22.82.42.32.63.13.94.75.45.75.65.142.61.1-0-0.7-0.7-0.20.71.72.73.33.6

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 (0,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, 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.