Saturday, January23, 2021
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Marine Weather and Tides
Davenport, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:14AMSunset 5:25PM Saturday January 23, 2021 6:42 AM PST (14:42 UTC) Moonrise 1:11PMMoonset 2:55AM Illumination 77% Phase: Waxing Gibbous; Moon at 10 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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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 321 Am Pst Sat Jan 23 2021
.gale watch in effect from Sunday afternoon through Monday morning...
Today..NW winds 10 to 20 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 14 seconds and S around 2 ft at 17 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 4 to 5 ft. NW swell 6 to 8 ft at 13 seconds and S around 2 ft at 16 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 5 to 6 ft. NW swell 4 to 6 ft at 14 seconds and W 2 to 3 ft at 21 seconds. Rain likely.
Sun night..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 6 to 7 ft. W swell 4 to 6 ft at 14 seconds and W 4 to 5 ft at 20 seconds. Rain likely.
Mon..NW winds 25 to 30 kt with gusts up to 40 kt. Wind waves 12 to 14 ft. NW swell 6 to 8 ft at 14 seconds and W 4 to 5 ft at 18 seconds. A chance of rain.
Mon night..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 9 to 10 ft. NW swell 9 to 11 ft at 16 seconds.
Tue..SW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. NW swell 9 to 11 ft. Rain likely.
Wed..S winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 5 to 7 ft. Rain.
PZZ500 321 Am Pst Sat Jan 23 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Scattered showers continue over the southern waters and will cease by the morning. Breezy to gusty northerly winds over the northern and outer waters will persist throughout the day. Rain returns Sunday into Monday, accompanied by widespread gusty winds with gale force conditions possible Sunday night into Monday morning. Heavy rain arrives by the middle of next week. Large, long period northwest swell arrives Sunday into Monday.


7 Day Forecast for Marine Location Near Davenport, CA
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location: 37.01, -122.2     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 231224 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 424 AM PST Sat Jan 23 2021

SYNOPSIS. A few showers will linger over Monterey County through mid morning. Otherwise, expect dry and seasonably cool conditions today. Widespread light to moderate rainfall is expected Sunday afternoon and evening, along with colder temperatures and lowering snow levels. Gusty northwest winds will follow Sunday night into Monday. A much stronger and wetter system will then impact the region with potentially heavy rain and strong winds from late Tuesday through Thursday. Additional rainfall is possible by next weekend.

DISCUSSION. As of 3:55 AM PST Saturday . KMUX radar currently showing scattered showers over Monterey County as well as our coastal waters south of the Golden Gate. These showers are associated with one final shortwave trough dropping south along the Central Coast. Based on recent radar trends, shower activity is decreasing over land. Latest short-term model data indicate only isolated showers will linger over Monterey and San Benito Counties through mid morning. Otherwise, expect dry conditions today along with seasonable temperatures.

Early morning satellite imagery shows an upstream system currently over the Gulf of Alaska. This system is forecast to drop to the southeast and bring widespread precipitation to our forecast area, starting in the North Bay around midday on Sunday and then spreading south across the rest of our region on Sunday afternoon and evening. Rain intensity with this system is expected to be light to moderate, although a brief period of locally heavy rain rates is possible along the cold front Sunday afternoon and evening. Rain totals through Sunday night are forecast to range from a tenth to a half inch in most areas, with potentially up to an inch in the Santa Cruz and Santa Lucia Mountains. Showers will taper off Sunday night and mostly end by Monday, although isolated showers may linger near the coast into Monday. This is a cold system and light snow accumulation is likely above 3000 feet. Snow levels will drop as low as 2000 feet by late Sunday evening, but by then most precipitation will be through our area.

After the cold front passes late Sunday, northwest winds will increase, especially over the coastal waters where gales are likely from late Sunday into Monday. Gusty northwest winds are also expected locally over land from Sunday night into Monday, especially near the coast and in the coastal hills where local gusts up to 40 mph are possible.

Once winds subside Monday night, the stage will be set for cold temperatures, with overnight lows early Tuesday morning forecast to drop to around freezing in the inland valleys. Areas of frost are likely in our cooler inland valleys early on Tuesday.

Attention next turns to a much stronger and wetter system arriving from the northwest by late Tuesday, bringing potentially heavy rain and strong winds from Tuesday evening through Thursday. This system is forecast to contain ample moisture and qualify as a weak to moderate atmospheric river (AR) event. While models agree this system will be capable of generating heavy rain rates, especially on Tuesday night and Wednesday, there is disagreement on how persistent the heavy rain might be and therefore how much total precipitation might fall. The ECMWF moves the frontal boundary and associated heavy rain band through our forecast area steadily from late Tuesday through late Wednesday, waiting until the band is south of our area before slowing its southward progress. The GFS, on the other hand, forecasts the band of intense precipitation to stall out over Monterey County on Wednesday afternoon and then slowly lifts the boundary back north to the Santa Cruz Mountains and East Bay by Thursday afternoon, before shifting it back to the south on Thursday night. Either model scenario would likely generate heavy rain rates and pose a risk of debris flows and flash flooding over the various burn scars, not to mention minor flooding in poorly drained and low- lying areas. But the GFS solution is more concerning due to the potential for a more prolonged period of heavy rainfall. Preliminary forecast rain totals from late Tuesday through Thursday range from 2 to 4 inches in most urban and low elevation areas, except locally less in rain-shadowed valleys, and from 4 to 7 inches in the hills, with locally higher amounts a definite possibility. Rainfall projections will be fine-tuned as we draw closer to this event, but the primary message is to be prepared for heavy rainfall and potential flash flooding and debris flows in and near recent burn scars from Tuesday evening through Wednesday and possibly through Thursday night. In addition, expect strong and gusty winds at times through the event.

Our weather will become less intense late in the week. However, models agree that the weather pattern will remain active with additional rainfall likely by next weekend.

AVIATION. as of 4:24 AM PST Saturday . For the 12Z TAFs. Rain showers have mostly cleared out of the Bay Area, but are lingering near the Central Coast, as seen on radar imagery. These showers should end by 16z. Terminals are mainly VFR/MVFR with local areas of IFR/LIFR where stratus and fog have formed. Can expect cigs and patchy fog to linger through the mid-morning hours, with post- frontal moisture providing support. Cigs will clear by late morning bringing VFR conditions for the afternoon and evening with gentle onshore winds. Patchy fog will be possible tonight, mainly in sheltered valleys. The next storm system arrives Sunday afternoon with steady rain and increasing winds.

Vicinity of KSFO . VFR/MVFR with some low clouds and cigs around the Bay 2000-3000 ft AGL, as per obs and satellite night imagery. Gradual clearing can be expected through the morning. Light northerly winds 5 to 10 kt shifting to WNW this afternoon, up to 15 kt. Clouds will increase late tonight ahead of the next frontal system Sunday afternoon and evening.

SFO Bridge Approach . Scattered low clouds may impact the approach through the morning hours.

Monterey Bay Terminals . VFR-MVFR ceilings with scattered showers ending by 16z. VFR conditions mid-morning through the day with light to slightly breezy onshore winds. High clouds increase late this evening but VFR should prevail.

MARINE. as of 03:21 AM PST Saturday . Scattered showers continue over the southern waters and will cease by the morning. Breezy to gusty northerly winds over the northern and outer waters will persist throughout the day. Rain returns Sunday into Monday, accompanied by widespread gusty winds with gale force conditions possible Sunday night into Monday morning. Heavy rain arrives by the middle of next week. Large, long period northwest swell arrives Sunday into Monday.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm from 11 AM



PUBLIC FORECAST: Dykema AVIATION: Lorber MARINE: Lorber

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46269 10 mi73 min 45°F 53°F6 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 19 mi43 min NNE 7.8 G 12 50°F 55°F1013.1 hPa (+0.5)47°F
46092 - MBM1 20 mi106 min NNE 5.8 48°F 53°F1012.1 hPa (-0.6)
46114 - West Monterey Bay, CA 23 mi47 min 55°F11 ft
MLSC1 - Moss Landing, South Harbor, CA 26 mi43 min 53°F
ELXC1 - Elkhorn Slough Reserve, CA 28 mi118 min E 4.1 42°F 1012 hPa42°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 31 mi47 min 55°F5 ft
MEYC1 32 mi67 min S 4.1 G 4.1 43°F 1012.8 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi55 min NNW 4.1 G 6 47°F 54°F1014.5 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi43 min NNE 9.7 G 14 50°F 1014.1 hPa (+0.7)46°F
46239 - Point Sur, CA (157) 46 mi47 min 55°F11 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA22 mi50 minWNW 410.00 miOvercast40°F38°F93%1013.3 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrS5S4SW5SW6S5NW6SW8W8SW3SW6CalmCalmNW3CalmCalmN3NW4N3NW3CalmN3CalmCalmW4
1 day agoCalmCalmCalmCalmCalmCalm5SW5SW8SW4SW5CalmCalmW3CalmCalmCalmCalmCalmNW3CalmW3CalmW3
2 days agoW3NW4CalmE34CalmSE4SW3SW7W5CalmCalmCalmCalmCalmN3CalmNW5CalmN3CalmNW4CalmCalm

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Sat -- 02:56 AM PST     Moonset
Sat -- 05:38 AM PST     4.99 feet High Tide
Sat -- 07:18 AM PST     Sunrise
Sat -- 01:11 PM PST     Moonrise
Sat -- 01:21 PM PST     0.41 feet Low Tide
Sat -- 05:24 PM PST     Sunset
Sat -- 08:19 PM PST     3.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.93.13.54.14.64.954.743.22.21.30.70.40.50.81.422.63.13.43.43.33.2

Tide / Current Tables for Santa Cruz, California
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Santa Cruz
Click for Map
Sat -- 02:54 AM PST     Moonset
Sat -- 05:44 AM PST     5.17 feet High Tide
Sat -- 07:16 AM PST     Sunrise
Sat -- 01:10 PM PST     Moonrise
Sat -- 01:27 PM PST     0.53 feet Low Tide
Sat -- 05:23 PM PST     Sunset
Sat -- 09:26 PM PST     3.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.23.64.24.75.15.24.94.33.52.51.60.90.60.60.91.422.63.13.53.73.73.5

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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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.