Sunday, August9, 2020
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Marine Weather and Tides
Moss Landing, 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 6:18AMSunset 8:05PM Sunday August 9, 2020 3:38 AM PDT (10:38 UTC) Moonrise 10:33PMMoonset 10:56AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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- 201 Am Pdt Sun Aug 9 2020
Today..SW winds 5 to 15 kt. Wind waves 1 ft. W swell 3 to 5 ft at 10 seconds.
Tonight..SW winds up to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 11 seconds and sw around 2 ft at 18 seconds.
Mon..W winds up to 10 kt. Wind waves 1 ft. W swell 2 to 4 ft at 12 seconds and S around 2 ft at 17 seconds.
Mon night..W winds around 5 kt. Wind waves 1 ft. W swell 2 to 4 ft at 12 seconds and S around 2 ft at 18 seconds.
Tue..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft at 11 seconds and sw around 2 ft at 16 seconds.
Tue night..W winds around 5 kt. Wind waves 1 ft. W swell 2 to 4 ft at 11 seconds and sw around 2 ft at 16 seconds.
Wed..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft and S around 2 ft.
Thu..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft and S around 2 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 201 Am Pdt Sun Aug 9 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will gradually diminish into this morning over the northern outer waters with generally light winds elsewhere. Hazardous seas conditions will persist over the northern outer waters into this evening. Locally breezy winds are expected this afternoon and evening over the northern san francisco bay near the golden gate and to the delta. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.


7 Day Forecast for Marine Location Near Moss Landing, CA
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location: 36.81, -121.76     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 090958 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 258 AM PDT Sun Aug 9 2020

SYNOPSIS. Warmer temperatures are expected to continue through the remainder of the weekend, especially inland. Slightly cooler weather returns early next week.

DISCUSSION. As of 3:00 AM PDT Sunday . A weak upper low lies just off the central California coast while upper level highs cover the eastern Pacific and the southern United States. The marine layer has compressed to near 1000 ft this morning and there is less inland penetration of the low clouds. With the lower marine layer areas of fog can be expected along the coast through midmorning. Already getting reports of visibilities below 1 mile at Half Moon Bay and 1/2 mile at Watsonville. Easterly flow aloft around the upper low is bringing high clouds from the Sierras which are remnants of afternoon convection.

Temperatures will be a few degrees warmer today with highs ranging from the upper 60s to low 70s at the coast to the 90s inland. May hit 100 in some of the warmest locations. 500 mb heights will start to fall Monday as an upper level trough over British Columbia drops south and flattens the upper ridge. This will begin a cooling trend that will last into the middle of the week with temperatures returning to near normals by Tuesday and Wednesday.

A couple of things of interest to watch in the long range. The upper high over the south is forecast to shift west to Arizona by next weekend resulting in more significant warming inland. Also will be watching a tropical system off Mexico moving northwest during the week that could possibly bring some mid and high moisture into southern or central California by next weekend as it rotates around the upper high.

AVIATION. As of 10:31 PM PDT Saturday . for 00z TAFs. VFR with high clouds moving over the SF Bay from storms out east. The marine layer's impacts will be limited as higher pressure builds. Clouds will remain mainly near the coast for MVFR, isolated IFR, and clearer inland. Earlier clearing Sunday for VFR. Winds remain onshore and will lighten overnight before becoming breezy Sunday afternoon. Stratus will return to terminals Sunday evening, but not expected to be widespread around the region.

Vicinity of KSFO . VFR. High clouds move over the terminal from storms over the Sierra Nevada, while stratus is slowly moving in through the Golden Gate. Winds remain onshore and breezy, and will reduce overnight. Limited coverage expected overnight, but a small chance for brief IFR conditions early Sunday morning (similar to Saturday morning). Clouds will mix out after 16z for VFR Sunday afternoon with breezy winds once again. Winds will again be northeasterly in the late morning/early afternoon before switching back to onshore.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . IFR. Winds have become light, and at times calm. Clouds have finally moved over the terminals and cigs will continue to lower with LIFR conditions possible early Sunday morning. Clouds are expected to begin to lift after 16z for VFR Sunday afternoon, with traditional breezy onshore winds. Stratus is expected to return to the Peninsula after 04z Sunday evening.

MARINE. as of 01:58 AM PDT Sunday . Winds over the northern outer waters continue to be out of the northwest and gusty, while lighter southerly winds are along the immediate coastline. Sunday will bring breezier winds through the Golden Gate and into the northern San Francisco Bay toward the Delta on Thursday. These winds will generate steep fresh swells resulting in locally hazardous seas, especially for smaller vessels. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . SF Bay from 3 PM



PUBLIC FORECAST: W Pi AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ELXC1 - Elkhorn Slough Reserve, CA 1 mi54 min W 1.9 56°F 56°F
MLSC1 - Moss Landing, South Harbor, CA 2 mi33 min SSE 1.9 G 6 55°F 1013.9 hPa55°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 15 mi43 min 59°F3 ft
MEYC1 16 mi63 min NNE 1.9 G 2.9 55°F 60°F1014.1 hPa
46114 - West Monterey Bay, CA 32 mi43 min 59°F6 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 34 mi29 min SSE 1.9 G 3.9 56°F 58°F1013.8 hPa55°F
46239 - Point Sur, CA (157) 37 mi43 min 60°F6 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA9 mi46 minN 00.50 miFog56°F55°F97%1013.7 hPa
Salinas, Salinas Municipal Airport, CA13 mi46 minN 05.00 miFog/Mist59°F55°F87%1014.7 hPa
Monterey Regional Airport, CA16 mi45 minSE 35.00 miOvercast with Haze61°F55°F81%1015.2 hPa
Hollister, CA, CA19 mi44 minN 010.00 miFair55°F51°F88%1014.2 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrCalmCalmN3CalmW33W4W4W5W76SW7W86W5SW6SW3SW3CalmCalmCalmCalmCalmCalm
1 day agoE3S4S5S4S4S4CalmS6SW5SW4SW9W10SW10SW9SW5W6W4CalmCalmCalmCalmSW3W3SW3
2 days agoSW5SW4SW4S43CalmSW6S54Calm5SW6W7SW8S7S8S7SE5E4SE3CalmNE4CalmCalm

Tide / Current Tables for Pacific Mariculture Dock, Elkhorn Slough, California
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Pacific Mariculture Dock
Click for Map
Sun -- 02:49 AM PDT     3.97 feet High Tide
Sun -- 06:19 AM PDT     Sunrise
Sun -- 09:06 AM PDT     1.40 feet Low Tide
Sun -- 11:56 AM PDT     Moonset
Sun -- 03:41 PM PDT     4.74 feet High Tide
Sun -- 08:04 PM PDT     Sunset
Sun -- 10:13 PM PDT     2.02 feet Low Tide
Sun -- 11:32 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.53.943.83.32.72.11.61.41.622.73.54.24.64.74.53.93.32.72.222.1

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Sun -- 01:44 AM PDT     0.42 knots Max Flood
Sun -- 04:43 AM PDT     -0.00 knots Slack
Sun -- 06:20 AM PDT     Sunrise
Sun -- 07:34 AM PDT     -0.58 knots Max Ebb
Sun -- 11:06 AM PDT     0.00 knots Slack
Sun -- 11:56 AM PDT     Moonset
Sun -- 02:06 PM PDT     0.49 knots Max Flood
Sun -- 05:18 PM PDT     -0.00 knots Slack
Sun -- 08:04 PM PDT     Sunset
Sun -- 08:06 PM PDT     -0.58 knots Max Ebb
Sun -- 11:33 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.40.40.30.2-0.1-0.3-0.5-0.6-0.4-0.2-00.20.40.50.40.30.1-0.2-0.5-0.6-0.5-0.4-0.2

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 (6,6,7,8)
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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 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.