Friday, December3, 2021
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Marine Weather and Tides
Santa Nella, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:58AMSunset 4:47PM Friday December 3, 2021 12:12 PM PST (20:12 UTC) Moonrise 6:16AMMoonset 4:22PM Illumination 0% Phase: New Moon; Moon at 29 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- 827 Am Pst Fri Dec 3 2021
Today..S winds around 5 kt, becoming W this afternoon. Wind waves around 2 ft. W swell 3 to 5 ft at 13 seconds. Patchy fog this morning.
Tonight..W winds around 5 kt. Wind waves around 2 ft. W swell 3 to 5 ft at 13 seconds.
Sat..NW winds 10 to 15 kt. Wind waves around 2 ft. W swell 3 to 5 ft at 13 seconds.
Sat night..SE winds around 5 kt. Wind waves around 2 ft. W swell 2 to 4 ft at 12 seconds.
Sun..W winds around 5 kt. Wind waves around 2 ft. W swell 2 to 3 ft at 12 seconds.
Sun night..N winds 5 to 10 kt. Wind waves 4 to 5 ft. W swell 2 to 3 ft at 11 seconds.
Mon..NW winds 10 to 15 kt. Wind waves 4 to 5 ft. W swell around 2 ft.
Tue..N winds 10 to 15 kt. Wind waves 5 to 6 ft. W swell 2 to 3 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 827 Am Pst Fri Dec 3 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A king tide is expected to influence portions of the bay shoreline this weekend during the mid-morning hours. Elsewhere, expect mainly light winds today, tonight and Saturday with increasing northwesterly winds Saturday night through early next week. A moderate period northwest swell continues into the weekend over our coastal waters before tapering off. Gusty winds over our outer waters starting Saturday evening will bring steep, fresh wind waves. These will dominate the pacific coastline into early next week. By next week, any swell will likely be dominated by wind waves that are generated.


7 Day Forecast for Marine Location Near Santa Nella, CA
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location: 37.16, -120.98     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 031817 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1017 AM PST Fri Dec 3 2021

SYNOPSIS. Widespread low clouds and fog this morning slowly burning off by late morning. Otherwise mostly sunny with seasonable temperatures. No big changes for Saturday, continued dry but cool where the marine clouds are slow to mix out. Increasing northerly winds on Sunday may help to mix clouds out earlier and bring slightly warmer temperatures. A system dropping down on Monday could bring some light rain by Monday night but chances remain low with any rain amounts very light. Dry Tuesday and Wednesday with light rain chances possible by Thursday or Friday or next week.

DISCUSSION. as of 09:54 AM PST Friday .

A mid-level ridge prevailed across the area this morning with dry conditions and light winds aloft. At the surface, weak troughing was present just offshore with an eddy located west of the Central Coast. An onshore wind regime prevailed, with low stratus covering the local waters, coastal areas, and area valleys. This pattern was reflected in the 03.12z KOAK sounding with a pronounced low-level inversion, near saturation below 950 mb, and dry conditions aloft.

Given a relatively static weather pattern today, not expecting too many changes. As the day progresses we should scour out most of the low clouds and fog across our inland valleys. However given continued onshore flow juxtaposed with the low December sun angle low clouds many be slow to clear (if they do at all) along the coast. Given this, trended high temperatures down by a few degrees along the coasts and bays. Otherwise low clouds and fog should return in earnest overnight to overtake the valleys and coastal areas once again with a similar pattern to today expected for Saturday.

PREV DISCUSSION. as of 3:35 AM PST Friday . Satellite looks like summertime with widespread low clouds and fog covering the ocean and much of the Bay Area. The marine fog has mixed with some of the radiation and tule fog across the interior valleys. San Jose had some dense fog earlier in the night and now Livermore is down to 1/4 mile with 1-2 miles for Napa and Santa Rosa. In general closer to the coast its mainly low clouds while dense fog will impact interior areas. The syntopic 500 mb pattern really hasn't changed a whole lot the last 24 hours but the surface gradients have trended onshore and the return of cool marine air will impact the region. Given the low December sun angle it will take a bit to mix clouds out this morning and the short days wont allow for too much solar warming. Some locations near the coast and bays that see limited sunshine today will struggle to reach 60 degrees.

The weekend forecast remains dry and not forecasting much change in the weather for Saturday. Marine clouds will drive the temperature forecast with highs mainly upper 50s to upper 60s regionwide.

A strong ridge to our west will try and build towards the coast by Sunday while surface pressure gradients trend offshore/northerly. They may not be strong enough to sufficiently dry and mix out the low clouds so only a few degrees of warming for Sunday in what should be a nice Bay Area weekend.

A shortwave dropping out of the Gulf of Alaska will ride over the ridge on Monday and push the 595 dm high further westward. Its this interaction that will determine if we see any light precip. Latest trends over the last 24 hours have unfortunately trended drier with the best precip chances from Mendocino northward by Monday night. Forecast will hold onto some slight chance PoPs for Monday/Monday night. Any precip will be very light. Despite the meager rain chances this system will signal at least a change in the pattern. It will bring cooler temps and some stronger northwest wind flow which should help to clean some of the haze and pollution out of the Bay Area.

High pressure rebuilds Tuesday and Weds with continued dry and seasonably mild temperatures.

Still monitoring rain chances for the next front Dec 9/10th. Signals are mixed and no signs for any heavy rain. Most likely scenario at this time would be a fast moving cold front with light rainfall. Higher confidence that much cooler air will move in behind the front with continued signals for perhaps more rain chances and cooler temps mid month and beyond as a West Coast trough tries to set up residence.

AVIATION. as of 9:50 AM PST Friday . For the 18z TAFs.

LIFR-IFR fog and low ceilings this morning. Slow clearing has begun as the weak December sun helps to slowly mix out the periphery of the stratus deck (e.g. STS/APC/LVK). This process will help to lift ceilings up to MVFR at most of the terminals starting late morning. Very brief periods of VFR can be expected at a couple terminals with FEW/SCT in their vicinities by mid-afternoon, but staying socked in with MVFR for much of the day today. VLIFR-IFR in fog and low ceilings returning tonight and Saturday morning as dewpoint depressions decrease and stratification continues to latch on to the region for the remainder of the TAF period.

Vicinity of KSFO . LIFR-IFR slowly lifting to MVFR this morning. Will remain mostly MVFR today with continuing mist and haze reducing surface visibility. IFR cigs returning tonight and Saturday morning.

KSFO Bridge Approach . Similar to KSFO.

Monterey Bay . VLIFR-IFR slowly lifting to MVFR today then VLIFR-IFR returning tonight and Saturday morning.

MARINE. as of 09:54 AM PST Friday . A King Tide is expected to influence portions of the Bay Shoreline this weekend during the mid- morning hours. Elsewhere, expect mainly light winds today, tonight and Saturday with increasing northwesterly winds Saturday night through early next week. A moderate period northwest swell continues into the weekend over our coastal waters before tapering off. Gusty winds over our outer waters starting Saturday evening will bring steep, fresh wind waves. These will dominate the Pacific coastline into early next week. By next week, any swell will likely be dominated by wind waves that are generated.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. Coastal Flood Advisory . CAZ006-506-508



PUBLIC FORECAST: SPM/RWW AVIATION/Marine: Diaz

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ELXC1 - Elkhorn Slough Reserve, CA 47 mi87 min E 1.9 52°F 1023 hPa50°F
MLSC1 - Moss Landing, South Harbor, CA 50 mi32 min 0 53°F 48°F

Wind History for Monterey, CA
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This daySW5
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Merced Regional Airport, CA26 mi19 minN 01.75 miFog/Mist51°F50°F96%1018.7 hPa

Link to 5 minute data for KMCE

Wind History from MCE (wind in knots)
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This dayW54NW6W5W400N3N4N3NW30SE3S300SE40000W3W30
1 day ago0000000000000E30000E3SE3SE4E303
2 days ago0000W300000SE5SE30000E3000SE3SW300

Tide / Current Tables for Kirby Park, Elkhorn Slough, California
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Kirby Park
Click for Map
Fri -- 02:51 AM PST     2.08 feet Low Tide
Fri -- 06:19 AM PST     Moonrise
Fri -- 07:03 AM PST     Sunrise
Fri -- 09:10 AM PST     6.56 feet High Tide
Fri -- 03:59 PM PST     -1.58 feet Low Tide
Fri -- 04:26 PM PST     Moonset
Fri -- 04:50 PM PST     Sunset
Fri -- 11:05 PM PST     4.54 feet High Tide
Fri -- 11:44 PM PST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Kirby Park, Elkhorn Slough, California, Tide feet
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3.6
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2.9
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2.3
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2.1
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2.4
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3.2
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5.3
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6.1
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6.5
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6.3
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5.3
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3.7
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1.8
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-0
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-1.2
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4.5


Tide / Current Tables for Elkhorn Slough railroad bridge, California
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Elkhorn Slough railroad bridge
Click for Map
Fri -- 02:51 AM PST     2.07 feet Low Tide
Fri -- 06:19 AM PST     Moonrise
Fri -- 07:03 AM PST     Sunrise
Fri -- 09:17 AM PST     6.40 feet High Tide
Fri -- 03:59 PM PST     -1.41 feet Low Tide
Fri -- 04:26 PM PST     Moonset
Fri -- 04:50 PM PST     Sunset
Fri -- 11:12 PM PST     4.55 feet High Tide
Fri -- 11:44 PM PST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Elkhorn Slough railroad bridge, California, Tide feet
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Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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