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Marine Weather and Tides
Version 3.4 |
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 7:12AM | Sunset 4:50PM | Tuesday December 10, 2019 10:26 PM PST (06:26 UTC) | Moonrise 4:03PM | Moonset 5:33AM | Illumination 100% | ![]() |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 846 Pm Pst Tue Dec 10 2019
Tonight..SE winds up to 10 kt. Rain this evening, then a chance of showers after midnight.
Wed..SE winds up to 10 kt. A slight chance of showers.
Wed night..S winds up to 10 kt. A slight chance of rain.
Thu..S winds 5 to 10 kt. A slight chance of rain.
Thu night..SW winds up to 10 kt. A slight chance of rain.
Fri..N winds around 5 kt.
Fri night..W winds around 5 kt.
Sat..W winds up to 10 kt. A chance of rain.
Sun..N winds up to 10 kt.
Tonight..SE winds up to 10 kt. Rain this evening, then a chance of showers after midnight.
Wed..SE winds up to 10 kt. A slight chance of showers.
Wed night..S winds up to 10 kt. A slight chance of rain.
Thu..S winds 5 to 10 kt. A slight chance of rain.
Thu night..SW winds up to 10 kt. A slight chance of rain.
Fri..N winds around 5 kt.
Fri night..W winds around 5 kt.
Sat..W winds up to 10 kt. A chance of rain.
Sun..N winds up to 10 kt.
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.
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 Benicia, CA
Hourly EDIT Helplocation: 38.04, -122.13 debug
Area Discussion for - Sacramento, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS66 KSTO 102302 AFDSTO
Area Forecast Discussion National Weather Service Sacramento CA 302 PM PST Tue Dec 10 2019
SYNOPSIS. Rain returns to the region tonight tapering to a few light showers on Wednesday. Widespread precipitation expected later in the week and into the weekend. Drier weather Sunday and early next week.
DISCUSSION. After the morning fog in the Valley, much of the low cloud deck was slow to erode. Now the clouds associated and ahead of the frontal band along the coast are moving into our area and will spread over the Sierra early this evening. It has been a sunny, seasonably pleasant day in the Sierra as the higher elevations were above the fog and well to the east of the advancing cloud deck from the west for most of the day. But that will change this evening.
The frontal system will move into the region, spreading light rain over much of our CWA beginning late this afternoon and continuing into the evening. Radar echoes along the Nrn CA coast this morning are now moving onshore at press time, and the timing of the upper trof suggests the frontal precip should end by Wed morning as the trof moves through our region. Satellite trends suggest a brief period of clearing early Wed morning as the trof passes, followed by an increase in cloud cover during the day. Behind the trof, heights rebuild on Wed as a ridge axis slides across the region. Some light sprinkles or showers are still possible mainly in the Nrn part of our CWA on Wed, where WAA (about 7 deg C/12hr in the 850-700 mbs layer) could result in some light precip.
An increase in precip is forecast over Norcal Wed nite and Thu as a strong 150kt Pac jet south of the GOA (Gulf of AK) low reaches the coast and focuses a +3 PW anomaly into our CWA. The U.S. West Coast AR Tool shows that a "weak" AR (TPW/moisture plume) along 140W will make "landfall" during this time (late on 12/11 and into 12/12). Rising 5H heights will steer the storm track and main dynamics a little farther N and into the Pac NW. But the strong WAA Wed nite and Thu (over 5 deg C/12 hr in the 850-700 mbs layer) will interact with the moisture plume resulting in steady precip over Norcal, mainly over the Nrn mtns and areas N of I-80. An inch or so of precip is forecast over Shasta Co during this time, with amounts tapering off rapidly Swd to the I-80 corridor. South of I-80, only a few hundredths are expected as the storm track shifts Nwd.
Looks as if it will be a little wetter in our CWA on Fri from earlier forecasts as 5H heights begin to fall slowly as the GOA trof emerges from its source region. This will keep the TPW plume over our CWA through the day. Comparing our QPF with the ECMWF ensembles we are generally a little low/light on the QPF and we made a last minute upward adjustment this afternoon . but still we may be a little too light. The bulk of the precip is still forecast over the Sierra.
Snow levels will be rising Wed nite and Thu to 8Kft or so limiting winter travel impacts, until they lower below the passes Fri nite. JHM
EXTENDED DISCUSSION (Saturday THROUGH Tuesday).
By Saturday morning expect ongoing precipitation mainly over the mountains and foothills, although a few lingering showers may be possible in the Valley. Snow levels will range from 4-5kft Saturday, although snowfall accumulations themselves will only be a few inches. Some minor mountain travel impacts are anticipated Saturday due to this lingering precipitation. Models have trended a bit later to bring dry weather back to the area, as a few light lingering snow showers will be possible through Sunday morning.
Upper level ridging builds into the area Sunday and Monday. Mostly clear skies and average temperatures are expected early next week. Ensemble guidance shows the potential for another system to impact NorCal Tuesday, although confidence with this system remains low at this time.
AVIATION.
Deteriorating conditions expected as a system moves across northern California tonight. Light rain is expected at RDD/RBL between 04-06Z, spreading south towards Sacramento terminals shortly after. MVFR/IFR conditions likely overnight at these sites, with possible LIFR conditions returning to southernmost terminals.
STO WATCHES/WARNINGS/ADVISORIES. None.
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapWind History for Martinez-Amorco Pier, CA
(wind in knots) EDIT (on/off)  Help11 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 24hr | W | SW | W | NW | W | W | N | NE | E | W | E | NE G8 | NE | N | NE | NE | NE | NE | NE | NE | N | E | NE | NE |
1 day ago | SE | W | W | W | W | W | NW | NW | NW | NW | W | W | NW | NW | NW | NW | NW | W | W | W | W | SW | W | SW |
2 days ago | S | -- | S | N | -- | -- | W | W | NW | NW | NW | NW | W | NW G6 | NW | N | W | SW |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Concord, Buchanan Field, CA | 6 mi | 34 min | NNW 4 | 3.00 mi | Fog/Mist | 53°F | 50°F | 89% | 1022.4 hPa |
Napa, Napa County Airport, CA | 14 mi | 33 min | E 5 | 6.00 mi | Fog/Mist | 52°F | 50°F | 93% | 1022.9 hPa |
Fairfield / Travis Air Force Base, CA | 20 mi | 89 min | NE 5 | 4.00 mi | Light Rain Fog/Mist | 51°F | 47°F | 89% | 1024.4 hPa |
Oakland, Metro Oakland International Airport, CA | 24 mi | 34 min | N 0 | 6.00 mi | Fog/Mist | 54°F | 53°F | 97% | 1023.4 hPa |
Novato / Gnoss Field, CA | 24 mi | 32 min | N 0 | 3.00 mi | Fog/Mist | 52°F | 51°F | 100% | 1024 hPa |
Link to 5 minute data for KCCR
Wind History from CCR (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 24hr | W | W | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | Calm | E | NE | NE | NE | N | NE | E | E | N | N | Calm | SW | NW |
1 day ago | S | SE | SE | SE | S | SE | Calm | SE | Calm | Calm | SW | Calm | Calm | SW | Calm | NW | NW | NW | Calm | W | W | W | W | Calm |
2 days ago | SE | S | S | S | Calm | SE | Calm | E | S | SE | Calm | S | SW | NW | Calm | NW | Calm | NW | Calm | NW | E | N | Calm |
Tide / Current Tables for Suisun Point, Carquinez Strait, California
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataSuisun Point
Click for Map
Wed -- 01:34 AM PST 3.96 feet High Tide
Wed -- 06:13 AM PST 2.04 feet Low Tide
Wed -- 06:36 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 12:02 PM PST 5.77 feet High Tide
Wed -- 04:43 PM PST Moonrise
Wed -- 04:48 PM PST Sunset
Wed -- 07:56 PM PST -0.39 feet Low Tide
Wed -- 09:14 PM PST Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:34 AM PST 3.96 feet High Tide
Wed -- 06:13 AM PST 2.04 feet Low Tide
Wed -- 06:36 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 12:02 PM PST 5.77 feet High Tide
Wed -- 04:43 PM PST Moonrise
Wed -- 04:48 PM PST Sunset
Wed -- 07:56 PM PST -0.39 feet Low Tide
Wed -- 09:14 PM PST Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
3.4 | 3.9 | 3.9 | 3.5 | 2.8 | 2.3 | 2 | 2.2 | 2.7 | 3.6 | 4.7 | 5.5 | 5.8 | 5.5 | 4.8 | 3.7 | 2.4 | 1.3 | 0.4 | -0.2 | -0.4 | -0.1 | 0.8 | 1.8 |
Tide / Current Tables for Roe Island S, Suisun Bay, California Current
EDIT (on/off)  Help One Week of DataRoe Island S
Click for Map
Wed -- 12:55 AM PST 0.66 knots Max Flood
Wed -- 03:54 AM PST -0.00 knots Slack
Wed -- 05:55 AM PST -0.69 knots Max Ebb
Wed -- 06:35 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 08:28 AM PST 0.00 knots Slack
Wed -- 11:16 AM PST 0.95 knots Max Flood
Wed -- 02:12 PM PST -0.00 knots Slack
Wed -- 04:43 PM PST Moonrise
Wed -- 04:48 PM PST Sunset
Wed -- 05:46 PM PST -2.53 knots Max Ebb
Wed -- 09:14 PM PST Full Moon
Wed -- 10:41 PM PST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:55 AM PST 0.66 knots Max Flood
Wed -- 03:54 AM PST -0.00 knots Slack
Wed -- 05:55 AM PST -0.69 knots Max Ebb
Wed -- 06:35 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 08:28 AM PST 0.00 knots Slack
Wed -- 11:16 AM PST 0.95 knots Max Flood
Wed -- 02:12 PM PST -0.00 knots Slack
Wed -- 04:43 PM PST Moonrise
Wed -- 04:48 PM PST Sunset
Wed -- 05:46 PM PST -2.53 knots Max Ebb
Wed -- 09:14 PM PST Full Moon
Wed -- 10:41 PM PST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
0.6 | 0.7 | 0.6 | 0.3 | -0.1 | -0.5 | -0.7 | -0.6 | -0.2 | 0.2 | 0.7 | 0.9 | 0.9 | 0.6 | 0.1 | -0.8 | -1.8 | -2.4 | -2.5 | -2.4 | -2 | -1.4 | -0.6 | 0.1 |
Weather Map
(on/off)  Help Weather Map
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 Sacramento, CA (1,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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