Sunday, December15, 2019
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Marine Weather and Tides
Kensington, 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 7:16AMSunset 4:52PM Sunday December 15, 2019 4:34 PM PST (00:34 UTC) Moonrise 8:39PMMoonset 10:27AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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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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.
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.


7 Day Forecast for Marine Location Near Kensington, CA
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location: 37.9, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 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
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA 5 mi46 min SW 5.1 G 6 56°F 1023.8 hPa
OBXC1 7 mi46 min 56°F 43°F
LNDC1 7 mi46 min WSW 2.9 G 4.1 55°F 1023.5 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi46 min WNW 1.9 G 1.9 55°F 1023.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 7 mi46 min SW 1 G 1
RCMC1 - 9414863 - Richmond, CA 7 mi46 min 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi46 min NNW 1.9 G 2.9 54°F 1022.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi101 min Calm 55°F 1024 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 9 mi46 min 55°F
PXSC1 9 mi46 min 56°F 46°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 11 mi46 min SW 2.9 G 2.9 55°F 1023.2 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi52 min WNW 8.9 G 14 55°F 55°F1023.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 12 mi46 min W 1 G 1.9 54°F1023.5 hPa
UPBC1 13 mi46 min W 2.9 G 4.1
PCOC1 - 9415144 - Port Chicago, CA 17 mi46 min Calm G 1.9 55°F 54°F1023.3 hPa
46237 - San Francisco Bar, CA (142) 20 mi64 min 55°F8 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 23 mi46 min NW 2.9 G 4.1 1023.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 25 mi109 min S 4.1 58°F 1023 hPa39°F
RTYC1 - 9414523 - Redwood City, CA 27 mi46 min WNW 7 G 8.9 54°F 57°F1024 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi34 min NNW 18 G 21 54°F 56°F1024.3 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 38 mi46 min 54°F1023.8 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 49 mi34 min NW 19 G 25 55°F 1024.3 hPa45°F

Wind History for Point Potrero Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi41 minNNW 310.00 miA Few Clouds57°F37°F49%1022.1 hPa
Oakland, Metro Oakland International Airport, CA14 mi41 minWNW 410.00 miMostly Cloudy57°F42°F58%1023.9 hPa
Hayward, Hayward Air Terminal, CA19 mi40 minW 710.00 miPartly Cloudy55°F42°F62%1024.4 hPa
San Francisco, San Francisco International Airport, CA20 mi98 minW 1510.00 miMostly Cloudy55°F43°F64%1023.4 hPa
Napa, Napa County Airport, CA21 mi40 minWSW 610.00 miPartly Cloudy54°F41°F62%1022.3 hPa
Novato / Gnoss Field, CA22 mi39 minWNW 1010.00 miFair55°F44°F67%1023.7 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrSW8Calm4W10W11SW93W5W11W9W11
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1 day agoSW6SW4CalmSW7S10S8S4W7W7W9W7W105CalmSW6SW6SW5W8W11
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2 days agoNW4CalmCalmCalmCalmCalmW5W6CalmS6SW3W3CalmCalmS3S6CalmSW4NW4CalmS7S11W5SW3

Tide / Current Tables for Berkeley, California
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Berkeley
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
Sorry tide depth graphs only, please select another station.

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3.14.14.854.84.33.83.53.53.84.45.25.86.36.25.54.22.61-0.2-0.7-0.601

Tide / Current Tables for Berkeley Yacht Harbor, California Current
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Berkeley 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
Sorry tide depth graphs only, please select another station.

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0.40.30.20.1-0-0.1-0.1-000.10.20.20.20.20-0.1-0.2-0.3-0.3-0.2-0.100.20.3

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 (19,4,5,8)
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Ground Weather Radar Station Sacramento, CA
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