Wednesday, January22, 2020
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Marine Weather and Tides
Saratoga, 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 7:16AMSunset 5:22PM Wednesday January 22, 2020 5:51 AM PST (13:51 UTC) Moonrise 5:39AMMoonset 3:27PM Illumination 7% Phase: Waning Crescent; Moon at 27 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- 223 Am Pst Wed Jan 22 2020
.small craft advisory in effect through this afternoon...
Today..N winds around 5 kt, becoming nw 10 to 15 kt this afternoon. Wind waves 1 to 2 ft. W swell 9 to 11 ft at 14 seconds.
Tonight..N winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 13 seconds.
Thu..NW winds up to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft at 12 seconds.
Thu night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 13 seconds and W 2 to 3 ft at 23 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 6 to 7 ft at 13 seconds and W 3 to 5 ft at 21 seconds.
Fri night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 8 to 10 ft at 18 seconds and nw 2 to 4 ft at 19 seconds.
Sat..SW winds up to 10 kt. Wind waves 1 ft. W swell 8 to 10 ft. Rain likely.
Sun..W winds 5 to 10 kt. Wind waves 1 ft. W swell 9 to 11 ft. Rain likely.
PZZ500 223 Am Pst Wed Jan 22 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light variable winds across most of the waters through midday, with locally breezy south/east winds along the southern coast. Later this afternoon and evening, winds shift to the north and strengthen across most of the waters through tomorrow. A wnw swell will peak today generating hazardous seas conditions for smaller vessels. Another longer period wnw swell will then arrive later this week.


7 Day Forecast for Marine Location Near Saratoga, CA
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location: 37.29, -122.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 221159 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 359 AM PST Wed Jan 22 2020

SYNOPSIS. A few lingering showers and patchy fog will be possible early Wednesday. Otherwise, mostly dry and warmer conditions will return through Friday. A storm system moving into Northern California this weekend bringing another chance for rain.

DISCUSSION. as of 02:42 AM PST Wednesday . A nearly stationary frontal boundary remains draped over the Bay Area resulting in lingering showers early Wednesday morning. Moist flow across the terrain is just enough to generate light precip. KMUX radar imagery shows the light rain has been most prevalent over the Santa Cruz Mountains and the East Bay Hills. Rainfall amounts over the last six hours have generally been a tenth or two, but a few jackpots up to one half inch in the Santa Cruz Mountains. Shower activity will continue to diminish through the early morning hours with little to no impacts except for some damp roads. One weather impact the could affect the morning commute will be fog. Given the ample low level moisture automated sites around the region have been reporting some fog with dense fog being reported at KSTS. Therefore, forecast through the morning hours will include fog. Besides lingering showers and fog this morning, the bigger story will be a warming and drying trend developing this afternoon through Friday. Highs today will approach or hit the mid 60s across the interior. Temperatures will increase further on Thursday and Friday with more widespread 60s and a few interior locations in Monterey/San Benito may even approach 70 degrees - about five degrees above normal.

No change in the 00Z model suite, rain chances look to return this weekend as the ridge flattens with another storm system moving into the British Columbia. The next storm system will drag another frontal boundary through Northern California. Light rain will return to the Bay Area Friday night over the North Bay and then slowly move southward over the weekend. Definitely looks wetter than the light precip from Tuesday, but as noted before not a major soaker and heaviest rain will be north. Rain chances linger into early next week as the tail end of additional weak systems pass to the north. High pressure rebuilds the middle of next week taking the storm track farther north.

Longer range outlook is definitely trending drier through the end of next week and beyond. CPC outlooks continue the warming and drying trend into early February.

AVIATION. as of 3:55 AM PST Wednesday . For 12z TAFs. Weak boundary remains in place over the region while a high pressure ridge is building in shortly behind it. For this morning, slight chance VCSH/-SHRA for KMRY KSNS KWVI KSJC KSQL KRHV KCVH ahead of the boundary, with LIFR to MVFR cigs regionwide. Patchy dense fog in the North Bay (KSTS) in the wake of the front. Expect to see improvements to VFR mid to late morning at all taf sites. Winds generally light and terrain driven today.

Vicinity of KSFO . BKN-OVC cigs 1200-3000 ft this morning thru 18-19Z with weak stationary front over the peninsula. Borderline MVFR/VFR cigs 19-22Z (ie SCT/BKN 2500-4000 ft). Winds generally light, 8kt or less, backing from offshore to become westerly by 21-22z. Improving conditions later this afternoon and tonight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VCSH/-SHRA with IFR cigs into sunrise with reductions in visibility to 2-4sm as well. Winds generally light and terrain driven, up to 8-10kt at KSNS around sunrise. VFR at or around 19Z with gradually improving conditions through the afternoon. KSNS weather station is currently not reporting but you may call the weather stations for the latest observations. See KMRY/KCVH for nearby obs.

MARINE. as of 03:48 AM PST Wednesday . Light variable winds across most of the waters through midday, with locally breezy south/east winds along the southern coast. Later this afternoon and evening, winds shift to the north and strengthen across most of the waters through tomorrow. A WNW swell will peak today generating hazardous seas conditions for smaller vessels. Another longer period WNW swell will then arrive later this week.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm until 3 PM SCA . Pt Reyes to Pigeon Pt 0-10 nm until 3 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 PM SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm



PUBLIC FORECAST: MM AVIATION: DRP MARINE: DRP

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 17 mi51 min 53°F 52°F1023.2 hPa (+0.3)
AAMC1 - 9414750 - Alameda, CA 36 mi51 min 52°F
MLSC1 - Moss Landing, South Harbor, CA 36 mi29 min E 2.9 G 8.9 51°F 1023.3 hPa50°F
46092 - MBM1 37 mi34 min E 7.8 52°F 54°F1022.4 hPa (+0.0)
ELXC1 - Elkhorn Slough Reserve, CA 37 mi66 min NNE 1 51°F 1025 hPa51°F
LNDC1 37 mi51 min 53°F 1022.8 hPa (+0.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi69 min ESE 2.9 G 4.1
OBXC1 39 mi51 min 53°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi51 min 52°F 1023 hPa (+0.4)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 39 mi31 min E 5.8 G 12 54°F 55°F1023 hPa53°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 40 mi51 min 53°F 1022 hPa (+0.3)
PXSC1 40 mi51 min 54°F 54°F
FTPC1 - 9414290 - San Francisco, CA 42 mi57 min 53°F 53°F1023.1 hPa
46114 - West Monterey Bay, CA 42 mi51 min 55°F12 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi31 min NNE 5.8 G 9.7 54°F 54°F1023.2 hPa51°F
46237 - San Francisco Bar, CA (142) 46 mi81 min 53°F10 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 46 mi51 min 53°F 1023.4 hPa (+0.5)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 47 mi40 min Calm 51°F 1023 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 47 mi51 min 55°F5 ft
RCMC1 - 9414863 - Richmond, CA 48 mi51 min 53°F
MEYC1 48 mi75 min 55°F1022.6 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA8 mi58 minSSE 310.00 miOvercast54°F51°F90%1022.9 hPa
San Carlos Airport, CA20 mi56 minN 010.00 miMostly Cloudy52°F51°F100%1023.4 hPa

Link to 5 minute data for KSJC

Wind History from SJC (wind in knots)
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Last 24hrS6S8S9SE11SE8SE10S8S7S6SW10S8SE9SE11S10S8S7S6S5CalmCalmCalmCalmSE3SE3
1 day agoCalmW4Calm3S4SE4CalmCalmCalmS4S7SW8S7S5S5SE4E3CalmSE4E3SE5S5SE5SE8
2 days agoCalmS3CalmS3S3CalmW3N4CalmCalmNW6W6CalmW5CalmS3S3CalmW5W3CalmSW3CalmNE3

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
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Gold Street Bridge
Click for Map
Wed -- 05:27 AM PST     3.07 feet Low Tide
Wed -- 05:39 AM PST     Moonrise
Wed -- 07:18 AM PST     Sunrise
Wed -- 10:19 AM PST     10.91 feet High Tide
Wed -- 03:26 PM PST     Moonset
Wed -- 05:20 PM PST     Sunset
Wed -- 06:36 PM PST     -0.84 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.97.36.24.93.83.13.34.879.410.810.79.88.263.71.60.1-0.7-0.70.32.24.56.6

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Wed -- 03:20 AM PST     -0.59 knots Max Ebb
Wed -- 05:09 AM PST     0.00 knots Slack
Wed -- 05:39 AM PST     Moonrise
Wed -- 07:18 AM PST     Sunrise
Wed -- 07:45 AM PST     1.10 knots Max Flood
Wed -- 10:32 AM PST     -0.00 knots Slack
Wed -- 03:23 PM PST     -1.48 knots Max Ebb
Wed -- 03:27 PM PST     Moonset
Wed -- 05:21 PM PST     Sunset
Wed -- 06:12 PM PST     0.01 knots Slack
Wed -- 09:06 PM PST     1.57 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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 (8,2,3,4)
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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.