Friday, August7, 2020
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Marine Weather and Tides
Loyola, 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 6:17AMSunset 8:10PM Friday August 7, 2020 5:42 AM PDT (12:42 UTC) Moonrise 9:43PMMoonset 9:05AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 239 Am Pdt Fri Aug 7 2020
Today..NW winds 5 to 15 kt. Gusts up to 25 kt this afternoon.
Tonight..NW winds 5 to 15 kt.
Sat..NW winds 5 to 15 kt.
Sat night..NW winds 5 to 10 kt.
Sun..NW winds 5 to 15 kt.
Sun night..NW winds 5 to 15 kt.
Mon..W winds 5 to 15 kt.
Tue..W winds 5 to 15 kt.
PZZ500 239 Am Pdt Fri Aug 7 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will ease along the coast and over the southern waters today. Winds will also gradually turn southerly across the inner coastal waters today and Saturday. Locally stronger winds will persist over the northern outer waters into the weekend.


7 Day Forecast for Marine Location Near Loyola, CA
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location: 37.29, -122.14     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 071207 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 507 AM PDT Fri Aug 7 2020

SYNOPSIS. A warming trend is expected from Friday through the weekend. The marine layer will compress but little intraday change in temperatures near the coast.

DISCUSSION. as of 3:15 AM PDT Friday . An upper level trough over the Pacific Northwest has swung inland. A weak upper low has broken off the southern end of the trough and will be over the area today. As a result temperatures will be close to what they were Thursday except for a few degrees warming over the inland areas. The marine layer started to develop last night but has mixed out some this morning leaving only patchy low clouds in the Bay Area. Hi-res models indicate clouds spreading into the central SF Bay and the South Bay during the morning hours but to a lesser extent before burning off to the coast late morning.

The upper trough fills in on Saturday and Sunday and an upper level ridge from the eastern Pacific noses into the Oregon coast. The marine layer is forecast to compress which could result in increasing areas of fog along the coast. A warming trend is expected for the weekend with highs on Sunday warming to above normal ranging from the mid 60s to low 70s at the coast to the mid to upper 90s in the warmest inland locations.

Temperatures will begin a slow cooling trend early to middle next week as an upper trough moving into British Columbia deepens along the west coast.

AVIATION. As of 5:07 AM PDT Friday . for 12z TAFs. MVFR/IFR ceilings along the coast with marine layer depth sloping from 1,000 feet Bodega Bay to 2,000 feet Fort Ord based on recent profiler data. VFR conditions expected to return at all locations by 17-18Z today, except at KMRY where MVFR conditions may persist until 20Z. Typical afternoon and evening seabreeze winds expected.

Vicinity of KSFO . VFR. West winds 5 to 10 kt increasing to 16G22kt by late afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . MVFR/IFR ceilings until 18Z to 20Z today then VFR. MVFR ceilings returning early evening and tonight. Light to moderate westerly winds.

MARINE. as of 4:50 AM PDT Friday . Northwest winds will ease along the coast and over the southern waters today. Winds will also gradually turn southerly across the inner coastal waters today and Saturday. Locally stronger winds will persist over the northern outer waters into the weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm until 9 AM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 9 AM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 9 AM



PUBLIC FORECAST: W Pi AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 15 mi54 min S 1.9 G 2.9 59°F 73°F1013.1 hPa
AAMC1 - 9414750 - Alameda, CA 34 mi54 min 69°F
LNDC1 36 mi54 min WSW 8 G 9.9 59°F 1012.5 hPa
OBXC1 37 mi54 min 58°F 58°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 37 mi32 min NNW 9.7 G 12 58°F 58°F1014 hPa55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 37 mi54 min SW 13 G 15
OKXC1 - 9414776 - Oakland (Berth 34), CA 37 mi54 min WSW 7 G 9.9 57°F 1012.5 hPa
46092 - MBM1 38 mi103 min NW 5.8 58°F 56°F1013.4 hPa (-0.5)
PXSC1 38 mi54 min 58°F 57°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 38 mi54 min ESE 1.9 G 6 57°F 1011.4 hPa
MLSC1 - Moss Landing, South Harbor, CA 38 mi48 min SW 6 G 16 57°F 1013.8 hPa55°F
ELXC1 - Elkhorn Slough Reserve, CA 39 mi117 min SSW 5.1 57°F 57°F
FTPC1 - 9414290 - San Francisco, CA 40 mi54 min 62°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi32 min NW 9.7 G 14 57°F 1013.7 hPa55°F
46114 - West Monterey Bay, CA 42 mi46 min 57°F5 ft
46237 - San Francisco Bar, CA (142) 43 mi42 min 57°F5 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 44 mi54 min SSW 11 G 16 58°F 1012.6 hPa
RCMC1 - 9414863 - Richmond, CA 46 mi54 min 65°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 48 mi76 min 56°F1 ft
MEYC1 49 mi66 min W 4.1 G 8 58°F 60°F1014.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi32 min W 5.8 G 9.7 55°F 53°F1012.9 hPa54°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA11 mi47 minN 010.00 mi59°F55°F88%1012.5 hPa
San Jose, San Jose International Airport, CA12 mi49 minSSE 910.00 miFair60°F54°F80%1012.5 hPa
San Carlos Airport, CA18 mi47 minN 010.00 miFair57°F53°F88%1012.9 hPa
Half Moon Bay Airport, CA24 mi47 minSSW 55.00 miFog/Mist57°F53°F88%1013.5 hPa

Link to 5 minute data for KNUQ

Wind History from NUQ (wind in knots)
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Last 24hrCalm--------------------------------CalmN6CalmNE4CalmCalmCalm
1 day agoW6--------------------------------SW455
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2 days agoCalm--------------------------------NW5NW3CalmW5W6W4W6

Tide / Current Tables for Palo Alto Yacht Harbor, California
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Palo Alto Yacht Harbor
Click for Map
Fri -- 03:33 AM PDT     7.78 feet High Tide
Fri -- 06:18 AM PDT     Sunrise
Fri -- 10:04 AM PDT     Moonset
Fri -- 10:49 AM PDT     0.50 feet Low Tide
Fri -- 04:31 PM PDT     7.34 feet High Tide
Fri -- 08:09 PM PDT     Sunset
Fri -- 10:42 PM PDT     Moonrise
Fri -- 11:23 PM PDT     2.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.44.96.67.67.76.85.542.71.60.80.51.12.64.66.37.27.26.65.74.83.832.5

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
Fri -- 12:49 AM PDT     1.05 knots Max Flood
Fri -- 03:44 AM PDT     -0.00 knots Slack
Fri -- 06:18 AM PDT     Sunrise
Fri -- 08:15 AM PDT     -1.21 knots Max Ebb
Fri -- 10:04 AM PDT     Moonset
Fri -- 10:50 AM PDT     0.00 knots Slack
Fri -- 01:29 PM PDT     1.28 knots Max Flood
Fri -- 04:48 PM PDT     -0.00 knots Slack
Fri -- 08:09 PM PDT     Sunset
Fri -- 08:45 PM PDT     -0.86 knots Max Ebb
Fri -- 10:42 PM PDT     Moonrise
Fri -- 11:06 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.910.80.4-0.1-0.5-0.8-1.1-1.2-1-0.50.10.81.21.210.5-0.1-0.4-0.7-0.8-0.8-0.5-0.1

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.
Link to Loop

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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weather_mapweather_map weather_map

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Disclaimer:
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.