Thursday, December12, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Mountain House, 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 7:10AMSunset 4:48PM Thursday December 12, 2019 11:18 AM PST (19:18 UTC) Moonrise 5:30PMMoonset 7:37AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 847 Am Pst Thu Dec 12 2019
Today..SW winds up to 10 kt. A chance of rain.
Tonight..SW winds around 5 kt. A chance of rain.
Fri..SW winds 5 to 10 kt. A chance of rain.
Fri night..W winds 5 to 10 kt. A chance of rain.
Sat..NW winds up to 10 kt. A slight chance of rain.
Sat night..W winds 5 to 10 kt.
Sun..NW winds up to 10 kt.
Mon..NE winds up to 10 kt. A chance of rain.
PZZ500 847 Am Pst Thu Dec 12 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly winds remain light and will prevail through Thursday before switching to west to northwest. By Friday night, northwest winds will increase as the next storm system moves in. A large long-period northwest swell will impact the waters through Saturday. Hazardous conditions for small craft vessels will exist with this arriving northwest swell due to steep large seas.


7 Day Forecast for Marine Location Near Mountain House, CA
   Hourly   EDIT   Help
location: 37.83, -121.57     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 121754 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 954 AM PST Thu Dec 12 2019

SYNOPSIS. Light rain will linger over the region through the morning before diminishing in coverage later in the day. Rain chances increase again Friday into Saturday with temperatures turning colder Sunday into Monday. An unsettled and wet pattern will likely return by middle of next week.

DISCUSSION. as of 9:36 AM PST Thursday . Lots of drizzle or light rain reports this morning as zonal flow aloft continues to bring moisture into the state. Expect on and off drizzle through the day, but decreasing overnight.

By late Friday into Saturday, moisture advection will again increase over the northern and central California coast ahead of an upper level system that will drop southward over the region. This will bring renewed chances for light to moderate rain first developing over the North Bay early Friday before spreading southward Friday night. The best chances for rainfall will be over the greater San Francisco Bay Area with lesser chances for the Central Coast. Unsettled (showery) conditions could persist into Saturday before drying out late Saturday night into Sunday.

Conditions will dry out and temperatures will turn cooler Sunday into early next week as a colder air mass moves over the area from the north. Looking for more widespread 30s and 40s for overnight lows from Saturday night into Monday night. Will need to watch for the potential for areas of frost or even freezing temperatures in the region's coldest interior valleys early next week.

While the operational models continue to differ in the details heading into the latter part of next week, the ensembles do indicate a return to unsettled and wet conditions with the potential for more widespread rainfall across the region during the extended forecast period.

AVIATION. as of 9:50 AM PST Thursday . for 18z TAFs. Low to mid-level stratus clouds surround the Bay Area and the Central Coast. Mostly widespread MVFR conditions but occasional IFR, even isolated terminals at LIFR, is possible as moisture from the ocean continues to move over the area. Less than 10 kts winds will prevail across all terminals. Isolated, very light on and off rain showers persist, but will be too weak to for extended showers that could wet runways. After sunset, forecast is for cigs to lower once again as MVFR continues trending toward IFR, locally LIFR-VLIFR overnight.

Vicinity of KSFO . Light winds prevail. MVFR conditions with cigs around 1500 feet as stratus clouds sit over the region. A passing shower is possible through the TAF period, but nothing for long durations. Lowering cigs is forecast tonight trending to IFR conditions.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Winds are light with cigs around 1500 feet providing mostly MVFR conditions. Cigs should improve somewhat this afternoon but persist with MVFR. Light, passing showers are possible through the TAF period, but nothing long enough to wet runways. Tonight sees cigs lower once again to borderline LIFR/IFR overnight.

MARINE. as of 09:41 AM PST Thursday . Southerly winds remain light and will prevail through Thursday before switching to west to northwest. By Friday night, northwest winds will increase as the next storm system moves in. A large long-period northwest swell will impact the waters through Saturday. Hazardous conditions for small craft vessels will exist with this arriving northwest swell due to steep large seas.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. High Surf Advisory . CAZ006-505-509-529-530 SCA . Pt Arena to Pt Reyes 0-10 nm from 10 AM SCA . Pt Reyes to Pigeon Pt 0-10 nm from 10 AM SCA . Pigeon Pt to Pt Pinos 0-10 nm from 10 AM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm from 10 AM SCA . Pt Arena to Pigeon Pt 10-60 nm from 10 AM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm from 10 AM



PUBLIC FORECAST: Sims AVIATION: DK MARINE: DK

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
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 22 mi48 min E 5.1 G 5.1 55°F 1026.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 29 mi48 min ENE 6 G 6 54°F 53°F1026.3 hPa
UPBC1 33 mi48 min ENE 2.9 G 4.1
MZXC1 - 9415102 - Martinez-Amorco CA 33 mi48 min ENE 1.9 G 4.1 54°F 54°F1026.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 35 mi93 min SSW 1 54°F 1026 hPa
LNDC1 38 mi48 min S 2.9 G 4.1 60°F 1026.5 hPa
AAMC1 - 9414750 - Alameda, CA 39 mi48 min 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 40 mi48 min W 1.9 G 1.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 40 mi48 min NW 5.1 G 6 56°F 1026.6 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi48 min W 5.1 G 6 58°F 1026.3 hPa
OBXC1 41 mi48 min 58°F 58°F
RTYC1 - 9414523 - Redwood City, CA 41 mi48 min W 1.9 G 1.9 61°F 57°F1026.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 42 mi48 min SSW 5.1 G 7 59°F 1026.8 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi48 min NW 1.9 G 4.1 58°F 1025.6 hPa
PXSC1 44 mi48 min 59°F 59°F
RCMC1 - 9414863 - Richmond, CA 45 mi48 min 55°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 47 mi79 min W 5.1 58°F 1027 hPa
FTPC1 - 9414290 - San Francisco, CA 48 mi54 min WNW 5.1 G 6 58°F 55°F1026.7 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
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
Last
24hr
NE6
E3
NE6
E6
E7
NE7
E6
E5
NE6
NE6
E6
NE7
NE8
NE5
NE3
E6
E6
E1
E4
E4
NE6
E5
NE6
NE4
1 day
ago
NE8
NE10
NE9
E8
G11
NE10
E11
G16
NE8
N6
E4
E4
E5
E8
E6
G9
E5
G8
E5
E4
NE5
NE5
NE6
NE7
NE7
NE7
NE7
NE7
2 days
ago
W9
W11
W10
W11
W10
G13
W11
W6
G9
W4
SW5
SW7
W6
W7
W5
W4
N5
NW1
E5
E2
E5
E6
N4
NE5
NE5
E7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA16 mi25 minN 010.00 miOvercast64°F57°F78%1025.9 hPa
Stockton, Stockton Metropolitan Airport, CA18 mi23 minE 46.00 miOvercast with Haze60°F50°F70%1026.5 hPa

Link to 5 minute data for KLVK

Wind History from LVK (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
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
Last 24hrCalmW3CalmE3E6E6NE6CalmNE5SE3N3CalmCalmNE4CalmCalmCalmNW4W5CalmCalmCalmCalmCalm
1 day agoNE10NE9E7E6NE9E8NE7CalmCalmSE3NE5NE6NE5CalmE3CalmCalmCalmCalmCalmCalmCalmE3Calm
2 days agoNW3CalmCalmCalmS3W6CalmSW3W3W3W5CalmCalmE4E5CalmE4CalmE4E3W4E4E7NE9

Tide / Current Tables for Borden Highway Bridge, Old River, San Joaquin River, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Borden Highway Bridge
Click for Map
Thu -- 01:00 AM PST     -0.22 feet Low Tide
Thu -- 07:12 AM PST     Sunrise
Thu -- 07:27 AM PST     2.44 feet High Tide
Thu -- 07:36 AM PST     Moonset
Thu -- 12:02 PM PST     1.24 feet Low Tide
Thu -- 04:47 PM PST     Sunset
Thu -- 05:30 PM PST     Moonrise
Thu -- 05:42 PM PST     3.54 feet High Tide
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
-0.1-0.2-0.10.41.11.72.12.42.42.11.71.41.21.41.72.433.53.53.32.721.20.6

Tide / Current Tables for Vulcan Island .5 mi E, San Joaquin River, California Current
   EDIT      (on/off)   Help   One Week of Data
Vulcan Island .5 mi E
Click for Map
Thu -- 01:37 AM PST     0.00 knots Slack
Thu -- 04:44 AM PST     0.51 knots Max Flood
Thu -- 07:12 AM PST     Sunrise
Thu -- 07:36 AM PST     Moonset
Thu -- 08:09 AM PST     -0.00 knots Slack
Thu -- 09:55 AM PST     -0.15 knots Max Ebb
Thu -- 12:03 PM PST     0.00 knots Slack
Thu -- 03:02 PM PST     0.72 knots Max Flood
Thu -- 04:46 PM PST     Sunset
Thu -- 05:29 PM PST     Moonrise
Thu -- 06:08 PM PST     -0.01 knots Slack
Thu -- 09:34 PM PST     -0.67 knots Max Ebb
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
-0.4-0.10.10.40.50.50.40.30-0.1-0.1-0.1-00.30.60.70.60.40-0.2-0.5-0.6-0.7-0.6

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 (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Sacramento, 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.