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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 7:16AM | Sunset 4:52PM | Sunday December 15, 2019 4:34 PM PST (00:34 UTC) | Moonrise 8:39PM | Moonset 10:27AM | Illumination 82% | ![]() |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 214 Pm Pst Sun Dec 15 2019
Tonight..NW winds 5 to 15 kt, becoming north around 5 kt after midnight.
Mon..NE winds up to 10 kt.
Mon night..E winds 10 to 20 kt with gusts up to 25 kt.
Tue..E winds 10 to 20 kt with gusts up to 25 kt.
Tue night..E winds 15 to 25 kt with gusts up to 35 kt. A chance of rain.
Wed..E winds 10 to 20 kt with gusts up to 30 kt. A chance of rain.
Wed night..E winds around 5 kt. A chance of rain.
Thu..SE winds around 5 kt. A chance of rain.
Fri..SE winds 5 to 10 kt. A chance of rain.
Tonight..NW winds 5 to 15 kt, becoming north around 5 kt after midnight.
Mon..NE winds up to 10 kt.
Mon night..E winds 10 to 20 kt with gusts up to 25 kt.
Tue..E winds 10 to 20 kt with gusts up to 25 kt.
Tue night..E winds 15 to 25 kt with gusts up to 35 kt. A chance of rain.
Wed..E winds 10 to 20 kt with gusts up to 30 kt. A chance of rain.
Wed night..E winds around 5 kt. A chance of rain.
Thu..SE winds around 5 kt. A chance of rain.
Fri..SE winds 5 to 10 kt. A chance of rain.
PZZ500 214 Pm Pst Sun Dec 15 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will be breezy this evening as a coastal trough develops over southern california while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through this evening, particularly for smaller vessels. Southerly winds will return by Monday night ahead of the next weather system.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will be breezy this evening as a coastal trough develops over southern california while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through this evening, particularly for smaller vessels. Southerly winds will return by Monday night ahead of the next weather system.
7 Day Forecast for Marine Location Near Kensington, CA
Hourly EDIT Helplocation: 37.9, -122.28 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 152327 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 327 PM PST Sun Dec 15 2019
SYNOPSIS. Blue skies surround the Bay Area and Central Coast on Sunday, with a few straggling showers over the ocean. Light northerly winds will shift to slightly off shore tonight. With minimal cloud cover and cooler air, cold overnight low temperatures are forecast around the region for Monday morning, which will be the coldest of the week. As high pressure builds dry air returns with warmer temperatures. Unsettled conditions return by midweek bringing the next chance for rain; and potentially again late next weekend.
DISCUSSION. as of 01:44 PM PST Sunday . An upper level ridge is building over the California coastline. This is allowing high pressure to provide clearer skies across the region for what seems like since Thanksgiving. There are still a few lingering isolated showers over the Pacific, but are not forecast to come over land. Winds are light and out of the north and will slowly shift over the course of the day to offshore. The light, dry offshore winds will inhibit any fog in the overnight hours. However, the lack of clouds will promote more cooling allowing for minimum temperatures to reach their lowest for this week. Widespread low-40s to upper 30s are expected around the Bay Area and Central Coast. Isolated areas of the North Bay Valleys, the East Bay Valleys, and Southern Monterey Interior County will be in the mid-30s just above freezing. Patchy frost in these areas may be possible.
The ridge will continue to build on Monday ushering in drier air and providing a warming trend, giving further confidence that Monday's the overnight lows tonight will be the minimum for the week. Seasonal Temperatures on Monday and Tuesday before the return of unsettled weather.
The next upper level trough moves in from the west on Tuesday night, bringing with it a weather system that will bring the next opportunity for rainfall for the region. Rainfall will be light to moderate at times and last through Wednesday morning, with spotty showers lingering over the area after the brunt of the system passes. Compared to what we have seen recently, accumulations will be minimal, with most areas seeing less than a half an inch. However, higher elevations of Marin County and the Santa Cruz Mountains, as well as coastal San Mateo could see up to an inch.
The trough-ridge-trough "rinse, repeat" pattern continues as high pressure tries to build on Thursday. But models are showing the next ridge to be too weak which will allow zonal flow to set up for the end of the work week. With consistent onshore flow drawing moisture in from the ocean, it would not be surprising if the the overcast skies with occasional pop-up showers/drizzle that we saw last week are seen again Thursday and Friday. The next system will approach the coast when the next trough moves in. Models are still disagreeing on timing, though it is looking more and more like a Saturday night into Sunday event. More to come as we get closer and models can better resolve the event.
AVIATION. as of 03:27 PM PST Sunday . For 00Z TAFs. VFR conditions to prevail through the period, aside from possible reduced vis at KSTS tomorrow morning. Current obs and satellite show FEW to SCT cumulus at 2500-5000 ft AGL. FEW to SCT clouds expected to hang around into this evening before diminishing overnight. W to NW winds this afternoon 10-15 kt with local gusts to around 20 kt into this evening. Winds will diminish overnight before N to NE winds develop by tomorrow morning.
Vicinity of KSFO . VFR with FEW to SCT clouds at around 3500-4500 ft AGL. Expecting low clouds to clear out this evening and tonight. W to NW winds around 15 kt this afternoon diminishing this evening. Winds expected to turn offshore by the morning.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . VFR through the period with FEW to SCT low clouds at around 3500 ft AGL. W to NW winds 10-15 kt with locally breezy winds at KMRY this afternoon. Winds to diminish overnight.
MARINE. as of 01:44 PM PST Sunday . Northwest winds will be breezy today as a coastal trough develops over southern California while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through this evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm until 10 PM SCA . Pt Reyes to Pigeon Pt 0-10 nm until 10 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 10 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 10 PM SCA . Pt Arena to Pigeon Pt 10-60 nm until 10 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 10 PM SCA . Mry Bay until 5 PM
PUBLIC FORECAST: DK AVIATION: AS MARINE: Sims
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Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapWind History for Point Potrero Richmond, CA
(wind in knots) EDIT (on/off)  Help5 PM | 6 PM | 7 PM | 8 PM | -12 PM | 10 PM | 11 PM | 12 AM | 1 AM | -12 PM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | -12 PM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
Last 24hr | W | W G23 | NW G16 | W G13 | NW G10 | NW | NW G9 | NW G11 | NW G12 | NW G13 | NW G17 | NW G18 | NW G14 | NW G10 | N G6 | N | N G14 | N G12 | N G11 | SW | SW | |||
1 day ago | SW G11 | SW | S | SW | SW | SW G15 | W | W G16 | NW G18 | NW G14 | W G11 | W | W G10 | W | W G12 | NW | NW G15 | NW G18 | NW G17 | NW G15 | W G14 | |||
2 days ago | SW | S | S | W | SW | S | SW | SW | S | S | S | S | S | SW | S | SW | SW | SW | S | S | SW G10 | SW | S |
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 | 13 mi | 41 min | NNW 3 | 10.00 mi | A Few Clouds | 57°F | 37°F | 49% | 1022.1 hPa |
Oakland, Metro Oakland International Airport, CA | 14 mi | 41 min | WNW 4 | 10.00 mi | Mostly Cloudy | 57°F | 42°F | 58% | 1023.9 hPa |
Hayward, Hayward Air Terminal, CA | 19 mi | 40 min | W 7 | 10.00 mi | Partly Cloudy | 55°F | 42°F | 62% | 1024.4 hPa |
San Francisco, San Francisco International Airport, CA | 20 mi | 98 min | W 15 | 10.00 mi | Mostly Cloudy | 55°F | 43°F | 64% | 1023.4 hPa |
Napa, Napa County Airport, CA | 21 mi | 40 min | WSW 6 | 10.00 mi | Partly Cloudy | 54°F | 41°F | 62% | 1022.3 hPa |
Novato / Gnoss Field, CA | 22 mi | 39 min | WNW 10 | 10.00 mi | Fair | 55°F | 44°F | 67% | 1023.7 hPa |
Link to 5 minute data for KCCR
Wind History from CCR (wind in knots)
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 | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
Last 24hr | SW | Calm | W | W | SW | W | W | W | W G30 | Calm | Calm | E | S | S | W | W | W | Calm | W | Calm | N | |||
1 day ago | SW | SW | Calm | SW | S | S | S | W | W | W | W | W | Calm | SW | SW | SW | W | W G16 | W G16 | W | W | W | W G19 | |
2 days ago | NW | Calm | Calm | Calm | Calm | Calm | W | W | Calm | S | SW | W | Calm | Calm | S | S | Calm | SW | NW | Calm | S | S | W | SW |
Tide / Current Tables for Berkeley, California
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataBerkeley
Click for Map
Sun -- 02:56 AM PST 5.05 feet High Tide
Sun -- 07:17 AM PST Sunrise
Sun -- 07:27 AM PST 3.44 feet Low Tide
Sun -- 10:26 AM PST Moonset
Sun -- 01:24 PM PST 6.33 feet High Tide
Sun -- 04:51 PM PST Sunset
Sun -- 08:19 PM PST -0.75 feet Low Tide
Sun -- 08:39 PM PST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 02:56 AM PST 5.05 feet High Tide
Sun -- 07:17 AM PST Sunrise
Sun -- 07:27 AM PST 3.44 feet Low Tide
Sun -- 10:26 AM PST Moonset
Sun -- 01:24 PM PST 6.33 feet High Tide
Sun -- 04:51 PM PST Sunset
Sun -- 08:19 PM PST -0.75 feet Low Tide
Sun -- 08:39 PM PST Moonrise
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 |
3.1 | 4.1 | 4.8 | 5 | 4.8 | 4.3 | 3.8 | 3.5 | 3.5 | 3.8 | 4.4 | 5.2 | 5.8 | 6.3 | 6.2 | 5.5 | 4.2 | 2.6 | 1 | -0.2 | -0.7 | -0.6 | 0 | 1 |
Tide / Current Tables for Berkeley Yacht Harbor, California Current
EDIT (on/off)  Help One Week of DataBerkeley Yacht Harbor
Click for Map
Sun -- 03:44 AM PST -0.00 knots Slack
Sun -- 05:20 AM PST -0.11 knots Max Ebb
Sun -- 07:17 AM PST Sunrise
Sun -- 07:26 AM PST 0.00 knots Slack
Sun -- 10:26 AM PST Moonset
Sun -- 11:14 AM PST 0.25 knots Max Flood
Sun -- 02:21 PM PST -0.00 knots Slack
Sun -- 04:51 PM PST Sunset
Sun -- 05:28 PM PST -0.32 knots Max Ebb
Sun -- 08:39 PM PST Moonrise
Sun -- 08:50 PM PST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 03:44 AM PST -0.00 knots Slack
Sun -- 05:20 AM PST -0.11 knots Max Ebb
Sun -- 07:17 AM PST Sunrise
Sun -- 07:26 AM PST 0.00 knots Slack
Sun -- 10:26 AM PST Moonset
Sun -- 11:14 AM PST 0.25 knots Max Flood
Sun -- 02:21 PM PST -0.00 knots Slack
Sun -- 04:51 PM PST Sunset
Sun -- 05:28 PM PST -0.32 knots Max Ebb
Sun -- 08:39 PM PST Moonrise
Sun -- 08:50 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 |
0.4 | 0.3 | 0.2 | 0.1 | -0 | -0.1 | -0.1 | -0 | 0 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0 | -0.1 | -0.2 | -0.3 | -0.3 | -0.2 | -0.1 | 0 | 0.2 | 0.3 |
Weather Map
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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 (19,4,5,8)
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Ground Weather Radar Station Sacramento, CA
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