Tuesday, April7, 2020
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Marine Weather and Tides
Davenport, 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 6:42AMSunset 7:37PM Tuesday April 7, 2020 6:35 AM PDT (13:35 UTC) Moonrise 6:27PMMoonset 5:51AM 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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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 232 Am Pdt Tue Apr 7 2020
.small craft advisory in effect from this afternoon through this evening...
Today..E winds up to 10 kt, becoming nw 10 to 20 kt with gusts up to 25 kt this afternoon. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 9 seconds and S 2 to 3 ft at 19 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 2 to 3 ft. Mixed swell nw 4 to 5 ft at 9 seconds and S 2 to 3 ft at 18 seconds.
Wed..W winds up to 10 kt. Wind waves 1 ft. Mixed swell nw 4 to 5 ft at 9 seconds and S 2 to 3 ft at 18 seconds.
Wed night..SW winds 5 to 10 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 9 seconds and S 2 to 3 ft at 17 seconds.
Thu..SW winds 5 to 10 kt. Wind waves 1 ft. Mixed swell nw 4 to 5 ft at 9 seconds and S 2 to 3 ft at 17 seconds.
Thu night..SW winds 5 to 10 kt. Wind waves 1 ft. Mixed swell nw 3 to 5 ft at 13 seconds and S 2 to 3 ft at 16 seconds.
Fri..W winds up to 10 kt. Wind waves 1 ft. Mixed swell nw 3 to 4 ft and S 2 to 3 ft.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. Mixed swell nw 2 to 4 ft and S 2 to 3 ft.
PZZ500 232 Am Pdt Tue Apr 7 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Scattered showers persist over the waters as the system continues its slow progression southeast of the area. The slight chance for Thunderstorms diminish as the Sun rises. Northwest winds increase through midweek as high pressure builds over the pacific northwest. A long period southwest swell arrives this morning and continues into Wednesday before decreasing.


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 071143 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 443 AM PDT Tue Apr 7 2020

SYNOPSIS. An upper low moving slowly south just off the California coast will maintain shower chances today, although many areas will likely remain dry. Shower chances will persist primarily across areas south of San Jose into Wednesday and Thursday as the upper low will be slow to exit the region. A warming and drying trend is forecast late in the week and into the weekend.

DISCUSSION. As of 3:30 AM PDT Tuesday . Early morning satellite imagery shows that the upper low responsible for yesterday's showers and thunderstorms remains centered just off the Central Coast, and is moving slowly to the south. Radar indicates that most shower activity is currently located offshore, although a few light showers are being detected over the North Bay. Models agree that shower potential will persist across much of our forecast area today as vorticity centers rotate around the upper low, but shower activity is expected to be more widely scattered today compared to yesterday, and thunderstorms are far less likely. The greatest chance of precipitation today is across Monterey and San Benito Counties during this afternoon and evening. The other short-term item of note is morning fog. Fog has formed in the North and East Bay Valleys early this morning, and expect patchy fog to persist in these areas through about mid morning.

Shower chances will continue through at least Wednesday, primarily across areas south of San Jose, as the upper low moves inland across southern California. Models often struggle with the track of cutoff lows, and this case is no exception. There has been a lot of model disagreement concerning the exact track of the low around midweek. Latest models now forecast to the low to move to near Las Vegas by Wednesday night and then retrograde back into California on Thursday. Thus, we may very well see an increase in shower activity on Thursday, especially across the south. And, if the 00Z ECMWF verifies with its more northerly forecast track of the retrograding low, then showers could develop as far north as San Francisco on Thursday. Given the model inconsistencies regarding the track of the upper low beyond 36 hours, forecast confidence decreases greatly by Thursday.

Additional rainfall this week is expected to be less than a half inch, with many locations, especially across the north, expected to see very little accumulation, or none at all.

Yesterday's temperatures were as much as 15 degrees below normal, but we should see temperatures rebound today as the cold core of the upper low moves away from our area, and also because most areas will see more sun today. Temperatures should continue to gradually warm through the week, except perhaps on Thursday if the upper low retrogrades as forecast. Warming and drying are expected in all areas from Friday through the weekend, and also into early next week, as the upper low finally moves well off to our east and an upper ridge builds just off the West Coast.

AVIATION. as of 4:42 AM PDT Tuesday . for 12Z TAFs. Low pressure over the coast begins showers over the ocean with lingering scattered showers over the North Bay. Mostly VFR; however, a few isolated terminals are at LIFR due to fog. Low clouds are expected to lift late morning for VFR Tuesday afternoon. Winds are light and onshore, but are expected to get breezy in the afternoon.

Vicinity of KSFO . Scattered showers linger in the North Bay, but no major impacts from rain is forecast. VFR with light onshore winds, but patchy low clouds are around the Bay Area this morning, particularly at KSTS and KLVK. Clouds will lift in the late morning and VFR is forecast this afternoon while the winds remain onshore and become breezier. Clouds are forecast to return tonight to bring about MVFR/VFR conditions.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR currently and forecast through the day. Winds remain onshore and breezier near the coastline. Onshore winds will persist and become stronger in the afternoon. Cloud bases will thicken and lower slightly for the evening and overnight hours. A slight chance exists for a scattered rain shower in the early evening around the peninsula though impacts should be minimal.

MARINE. as of 02:32 AM PDT Tuesday . Scattered showers persist over the waters as the system continues its slow progression southeast of the area. The slight chance for thunderstorms diminish as the sun rises. Northwest winds increase through midweek as high pressure builds over the Pacific Northwest. A long period southwest swell arrives this morning and continues into Wednesday before decreasing.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Mry Bay from 3 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm from 3 PM



PUBLIC FORECAST: Dykema AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46042 - MONTEREY - 27NM West of Monterey Bay, CA 19 mi36 min SE 5.8 G 9.7 51°F 55°F1017.9 hPa44°F
46092 - MBM1 20 mi128 min SE 5.8 50°F 55°F1017 hPa
MLSC1 - Moss Landing, South Harbor, CA 26 mi28 min E 5.1 G 12 41°F 1018.8 hPa38°F
ELXC1 - Elkhorn Slough Reserve, CA 28 mi111 min E 1.9 40°F 40°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 31 mi36 min 57°F3 ft
MEYC1 32 mi60 min S 5.1 G 6 42°F 58°F1017.8 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi48 min ENE 2.9 G 4.1 42°F 58°F1018.7 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi36 min E 7.8 G 12 50°F 53°F1018.5 hPa45°F
46239 - Point Sur, CA (157) 46 mi36 min 56°F6 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA22 mi43 minN 010.00 miFair39°F37°F93%1018.2 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrCalm--N3N3E5SE5SW7W11--W7
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1 day agoS11SW10S6S13S13SW10S10SW9W4W6CalmE3E3E4S4E3CalmCalmCalmCalmE5NW3CalmCalm
2 days agoNW4CalmCalmCalmS34SW8SW7SW8SW10SW12SW11SW10SW12SW12SW14S12SW12SW9
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Tide / Current Tables for Santa Cruz, Monterey Bay, California
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Santa Cruz
Click for Map
Tue -- 04:32 AM PDT     0.31 feet Low Tide
Tue -- 06:44 AM PDT     Sunrise
Tue -- 06:49 AM PDT     Moonset
Tue -- 10:39 AM PDT     5.21 feet High Tide
Tue -- 04:46 PM PDT     0.10 feet Low Tide
Tue -- 07:26 PM PDT     Moonrise
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:36 PM PDT     Sunset
Tue -- 11:06 PM PDT     5.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.63.42.110.40.4123.24.35.15.24.73.62.31.10.30.10.61.62.94.15.15.5

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Tue -- 04:26 AM PDT     0.21 feet Low Tide
Tue -- 06:45 AM PDT     Sunrise
Tue -- 06:51 AM PDT     Moonset
Tue -- 10:30 AM PDT     5.11 feet High Tide
Tue -- 04:40 PM PDT     -0.00 feet Low Tide
Tue -- 07:28 PM PDT     Moonrise
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:37 PM PDT     Sunset
Tue -- 10:57 PM PDT     5.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.33.21.90.80.30.312.13.34.4554.43.320.80.100.61.72.94.15.15.4

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 (9,2,3,4)
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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.