Wednesday, December11, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Millbrae, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:12AMSunset 4:52PM Tuesday December 10, 2019 10:45 PM PST (06:45 UTC) Moonrise 4:05PMMoonset 5:33AM 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
    EDIT      (on/off)   Help
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 846 Pm Pst Tue Dec 10 2019
Tonight..SE winds 10 to 20 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 15 seconds and S around 2 ft at 15 seconds. Rain this evening, then a chance of showers after midnight.
Wed..S winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 15 seconds and S around 2 ft at 15 seconds. A chance of showers.
Wed night..S winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 16 seconds. A slight chance of rain.
Thu..S winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 19 seconds. A slight chance of rain.
Thu night..NW winds up to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft at 18 seconds. A chance of rain.
Fri..N winds up to 10 kt. Wind waves 1 ft. W swell 12 to 14 ft at 18 seconds.
Fri night..NW winds 5 to 10 kt. Wind waves 1 ft. W swell 10 to 12 ft at 17 seconds.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 8 to 10 ft.
Sun..N winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 7 to 9 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 7 ft with a dominant period of 13 to 15 seconds. Across the bar...seas 5 to 8 ft with a dominant period of 13 to 15 seconds. Maximum ebb current of 1.2 kt at 03:25 am Wednesday and 3.9 kt at 03:07 pm Wednesday.
PZZ500 846 Pm Pst Tue Dec 10 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak frontal system will bring light to moderate rain to the northern waters tonight. Light to moderate southerly winds will then continue through much of the week as a series of frontal systems pass north of the area. Winds shifting to the northwest towards the weekend. A moderate northwest swell will persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.


7 Day Forecast for Marine Location Near Millbrae, CA
   Hourly   EDIT   Help
location: 37.58, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 110608 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 959 PM PST Tue Dec 10 2019

SYNOPSIS. A moist zonal flow will keep a chance of light rain in the forecast for much of the week, with the best chances across the North Bay. A system will bring another chance of rain and cooler temperatures on Saturday with dry weather returning Sunday and Monday.

DISCUSSION. as of 9:59 PM PST Tuesday . An amplifying, small scale, moderately strong mid level trough is passing quickly to the east over the forecast area this evening. Considering dry air present in the lower to mid levels of the atmosphere per the 00z Oakland sounding, the dynamics attended by marginal at best jet streak winds within the trough produced a tenth to a third of an inch of rain over the North Bay, a few hundredths to two tenths of an inch over the East Bay a tenth of an inch or less over the Santa Cruz mountains as the rain band continues to expand to the south while moving east. The mid level trough passing by this evening has separated from the surface cold front that's still plodding along over the offshore waters and becoming less discernible with time while moving east at about 10 mph per theta-e forecasts. Early evening infrared satellite imagery showed a sharp contrast of cloud cover (upward motion prior to) to no cloud cover (downward motion after) the 500 mb trough axis. Isentropic slantwise flow as would be expected briefly intensified with this trough over the Bay Area. The NAM model had trouble keeping up with rain amounts over the Bay Area, the HRRR model fared a little better forecasting rain amounts, but not by much; it's a good example of the limitations regarding model resolution and small scale, but potent troughs.

For the large scale picture we're locked in with a zonal flow pattern for the foreseeable future. Moist Pacific air in this zonal pattern will bring periodic light rain mainly over northernmost portions of the cwa through the week. For additional information please see the previous forecast discussion.

PREV DISCUSSION. as of 1:55 PM PST Tuesday . A moist zonal flow will develop Wednesday through the end of the week. A subtle disturbance in the flow and warm advection will bring a chance of rain mainly north of the Golden Gate on Wednesday night and Thursday. Moist onshore flow will continue into Friday with the best chance of light rain continuing across the North Bay. Rainfall through the end of the week will be light with minimal impacts. A slightly warmer airmass will also arrive with highs on Thursday in the lower to middle 60s. The moist flow will also provide for mild overnight lows, mainly in the upper 40s to lower 50s. The moist zonal flow will bring mostly cloudy skies through the week.

A shortwave trough will then move through northern California on Saturday. Currently, most of the precipitation with this system is forecast to remain to our north. The trough will bring a cooler airmass to the region on Saturday with highs dropping back into the 50s. A cool, drier northwesterly flow will develop on Sunday followed by upper level ridging early next week. A progressive pattern still looks to persist into next week, but the Euro ensemble has trended towards less amplified troughing.

AVIATION. as of 7:00 PM PST Tuesday . Approaching frontal system will bring low level moisture into the area tonight along with some light rain. MVFR cigs have appeared at STS and is working its way into SFO Bay Area. Winds will be light and generally out of the southeast. Models show low level moisture lingering through the day on Wednesday so it may remain MVFR.

Vicinity of KSFO . As precip band approaches . cigs are expected to drop gradually lower into MVFR with bases 4000-5000 ft lowering to 2000-3000 ft after 06Z. Periods of light rain through 12Z. MVFR cigs persisting through the day Wednesday. Light easterly winds becoming more southeast tonight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Low clouds off the coast of Carmel could spread into MRY after 04Z and SNS after 06Z. Low confidence on timing as it could come in later. Southeast winds around 5-10 kt with except brief west winds possible this afternoon and early evening.

MARINE. as of 9:03 PM PST Tuesday . A weak frontal system will bring light to moderate rain to the northern waters tonight. Light to moderate southerly winds will then continue through much of the week as a series of frontal systems pass north of the area. Winds shifting to the northwest towards the weekend. A moderate northwest swell will persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm until 3 AM SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 AM



PUBLIC FORECAST: Canepa/ST AVIATION: W Pi MARINE: W Pi

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 11 mi45 min E 1.9 G 4.1 54°F 57°F1024 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 14 mi45 min 55°F
PXSC1 15 mi45 min 54°F 54°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi51 min ESE 4.1 G 5.1 53°F 1022.7 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi45 min 53°F 1023.9 hPa (-0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi51 min NNE 1 G 1.9
OBXC1 16 mi45 min 53°F 53°F
LNDC1 16 mi45 min N 1 G 1 53°F 1023.8 hPa (-0.0)
FTPC1 - 9414290 - San Francisco, CA 16 mi51 min W 2.9 G 4.1 53°F 55°F1024 hPa
46237 - San Francisco Bar, CA (142) 19 mi45 min 54°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 22 mi28 min Calm 52°F 1024 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 23 mi51 min ESE 1.9 G 1.9 54°F 1024.1 hPa
RCMC1 - 9414863 - Richmond, CA 24 mi45 min 55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi25 min SSE 12 G 14 54°F 56°F1024 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 30 mi25 min SSE 14 G 16 54°F 57°F1023.6 hPa49°F
MZXC1 - 9415102 - Martinez-Amorco CA 34 mi51 min N 5.1 G 6 52°F 54°F1024 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 34 mi51 min E 8 G 8.9 53°F 1023.6 hPa
UPBC1 35 mi51 min NNE 5.1 G 5.1
PCOC1 - 9415144 - Port Chicago, CA 38 mi45 min 53°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 41 mi51 min ESE 5.1 G 6 52°F 1023.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 42 mi51 min 54°F1023 hPa
SFXC1 - San Francisco Bay Reserve, CA 47 mi60 min ENE 4.1 51°F 1024 hPa

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last
24hr
N1
E1
SE4
S3
--
N2
W3
SW1
S1
S3
NE1
E4
G7
E3
W2
G5
N4
N5
N4
N4
NW2
W2
W5
W9
NW4
NE5
1 day
ago
W4
SE2
S1
--
--
S3
SW1
N1
E2
SE1
SW3
SW1
S2
SE2
E3
G6
NE4
N4
N4
N4
G7
N3
NW4
NW5
N4
NW1
2 days
ago
N2
E2
E2
SW1
S4
--
NW3
G6
N4
N6
NW6
G9
NW7
NW7
W5
NW3
NW4
NW3
W3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA3 mi49 minE 48.00 miOvercast55°F51°F87%1023.3 hPa
San Carlos Airport, CA8 mi50 minN 09.00 miOvercast54°F53°F100%1023.7 hPa
Half Moon Bay Airport, CA8 mi50 minESE 410.00 miOvercast54°F50°F88%1023.7 hPa
Oakland, Metro Oakland International Airport, CA12 mi52 minN 06.00 miFog/Mist54°F53°F97%1023.4 hPa
Hayward, Hayward Air Terminal, CA15 mi51 minNE 49.00 miMostly Cloudy53°F51°F93%1024.1 hPa
Palo Alto Airport, CA16 mi2 hrsENE 410.00 miRain54°F51°F94%1023.7 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hrCalmE6S4CalmCalmNW4N10N8CalmN5NE6CalmCalmNE5NE6NE4N4NE5CalmW13W83CalmE4
1 day agoCalmCalmNW3CalmSW3CalmCalmCalmW5SE4SE3SE4E4E6E7E5E3N4W9NW5W5NW6NW5Calm
2 days agoSW12SW8SW7SW6SW3S3S3W3W5W4W5NW5SW5NW63N4W8W9W10W13W14W11W9W4

Tide / Current Tables for Coyote Point Marina, San Francisco Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Coyote Point Marina
Click for Map
Wed -- 12:02 AM PST     5.97 feet High Tide
Wed -- 05:03 AM PST     2.77 feet Low Tide
Wed -- 06:35 AM PST     Moonset
Wed -- 07:13 AM PST     Sunrise
Wed -- 10:49 AM PST     7.81 feet High Tide
Wed -- 04:45 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 06:03 PM PST     -0.72 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
65.74.93.93.12.83.145.46.77.67.87.364.22.40.8-0.3-0.7-0.40.62.13.64.9

Tide / Current Tables for Oyster Point 2.8 mi E, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Oyster Point 2.8 mi E
Click for Map
Wed -- 12:26 AM PST     -0.01 knots Slack
Wed -- 03:04 AM PST     -0.91 knots Max Ebb
Wed -- 05:36 AM PST     0.00 knots Slack
Wed -- 06:35 AM PST     Moonset
Wed -- 07:14 AM PST     Sunrise
Wed -- 08:36 AM PST     0.79 knots Max Flood
Wed -- 11:26 AM PST     -0.00 knots Slack
Wed -- 03:16 PM PST     -1.95 knots Max Ebb
Wed -- 04:45 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 06:36 PM PST     0.00 knots Slack
Wed -- 09:14 PM PST     Full Moon
Wed -- 09:43 PM PST     1.09 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.2-0.3-0.7-0.9-0.7-0.30.10.50.70.80.60.2-0.3-1-1.6-1.9-1.8-1.2-0.50.20.711.10.9

Weather Map
       (on/off)   Help Weather Map
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 (1,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerious 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.