Thursday, October28, 2021
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Marine Weather and Tides
San Francisco, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:30AMSunset 6:16PM Thursday October 28, 2021 12:42 PM PDT (19:42 UTC) Moonrise 11:28PMMoonset 1:38PM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 936 Am Pdt Thu Oct 28 2021
Today..SE winds around 5 kt, becoming nw 10 to 15 kt this afternoon. Patchy fog this morning.
Tonight..NW winds 10 to 15 kt.
Fri..W winds 10 to 15 kt.
Fri night..SW winds around 5 kt.
Sat..SW winds around 5 kt.
Sat night..SW winds around 5 kt.
Sun..SW winds 5 to 10 kt. A chance of rain.
Mon..S winds 5 to 10 kt. A chance of rain.
PZZ500 936 Am Pdt Thu Oct 28 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A moderately large, longer period northwest swell has arrived and is outperforming model data by a few feet, with swell heights of 10 to 14 feet at roughly 15 to 17 seconds. This wave energy will bring hazardous conditions for small craft vessels, particularly in the surf zone, near shoals, and at harbor entrances with breakers of 15 to 20 feet. This wave energy will gradually subside later today and into tomorrow. Breezy to locally gusty northwest winds will persist during the day over in our outer waters and occasionally along some of our inner water zones.


7 Day Forecast for Marine Location Near San Francisco, CA
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location: 37.81, -122.44     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 281828 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1128 AM PDT Thu Oct 28 2021

SYNOPSIS. Warming and drying trend continues into Friday. An approaching cold front late Friday brings cooler conditions over the weekend, but the area looks to remain dry. Early next week a frontal system brings rain chances to the Bay Area, with higher chances in North Bay.

DISCUSSION. as of 03:13 AM PDT Thursday . A relatively quiet night with mostly clear skies across the Bay Area. Only near term weather impact will be some patchy morning fog. Satellite fog product imagery shows some coastal fog and patchy inland valley fog. Some fog that develops may be locally dense. As of this discussion the Napa Airport is currently one half mile visibility. Otherwise, Thursday looks to be the mildest day of the next few thanks to an upper level ridge parked overhead. Highs will generally be in the 60s and 70s with the warmest interior locations cracking 80 degrees, which is about five degrees above climo.

The upper level ridge shifts eastward by Friday as a digging upper level low pressure moves into NorCal. The upper low will bring cooler temperatures heading into the weekend. Latest model guidance shows a few showers will be possible with the upper low, but most shower activity will remain north of the Bay Area. That being said, cannot completely rule out a passing shower over the far North Bay this weekend.

Those with outdoor plans Sunday evening - forecast is trending cooler with increasing clouds, but still dry at this time.

A more pronounced shift in the upper level pattern occurs Sunday night into Monday with a cold front moving in from the NW. Rain chances return to the Bay Area for the Monday morning commute. Rain looks most likely over the North Bay initially before move S and E. Definitely not another historic storm, but more beneficial rainfall for the Bay Area.

A brief drying trend develops behind the front on Tuesday, but fortunately it will be short-lived. Another round of rain will be possible the middle of next weeks. Details vary a lot, but the good thing is longer range models keep the storm door open.

AVIATION. as of 11:22 AM PDT Thursday . For the 18z TAFs. This morning's fog has been dissipating the last few hours leaving all terminals at VFR this afternoon. Surface winds will be fairly light again today, with maximum winds around 8-12 kts possible. Models such as HREF and HRRR hinting at patchy fog and low clouds again late tonight going into Friday morning, which could impact the North Bay terminals as well as KSFO and KOAK. Confidence on whether or not the fog will stay confined to the water or make it to the aforementioned terminals is still low-to-moderate at this time. Stay tuned for the updated TAF this evening.

Vicinity of KSFO . VFR. Light winds currently but will pick up slightly this afternoon and become more W/NW. VFR expected the rest of the afternoon into the evening. Fog may return again tonight which could bring lowered visbys and potentially cigs under 1000 ft. However, similar to last night/this morning, the fog could stay confined to the coast again with winds being light tonight. Stay tuned for 00z TAF.

KSFO Bridge Approach . Similar to KSFO.

Monterey Bay . VFR. Winds will be ~8-12 kts this afternoon. Winds to shift NW in the coming hours. Stratus may return early tomorrow morning, bringing MVFR conditions and potentially brief IFR with locally dense fog.

MARINE. as of 02:24 AM PDT Thursday . Large west to northwest swell remains a concern through this morning even as wave heights and periods gradually subside. Hazardous seas are still expected, particularly for smaller vessels. Large breaking waves will also still be possible across nearshore shoals and around harbor entrances. Northwest winds will persist during the day over in our outer waters and occasionally along some of our inner water zones. Seas will continue subsiding as we go into tomorrow.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm



PUBLIC FORECAST: MM AVIATION: McCorkle MARINE: Diaz

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FTPC1 - 9414290 - San Francisco, CA 1 mi55 min N 8G8.9 62°F 1020.9 hPa
PXSC1 2 mi55 min 62°F 62°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 3 mi55 min WNW 5.1G7 63°F 1020.1 hPa
OBXC1 5 mi67 min 60°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi92 min NW 5.1 58°F 1022 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 6 mi55 min WNW 6G7 59°F 1021.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 6 mi55 min WNW 4.1G5.1
LNDC1 8 mi55 min WNW 4.1G5.1 65°F 1020.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi55 min NNW 11G14 65°F 1021.4 hPa
AAMC1 - 9414750 - Alameda, CA 8 mi55 min NW 2.9G5.1 65°F 62°F1021.3 hPa
RCMC1 - 9414863 - Richmond, CA 8 mi55 min NW 8.9G9.9 61°F 61°F1021.4 hPa
46237 - San Francisco Bar, CA (142) 10 mi73 min 62°F 59°F9 ft
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi55 min E 11G13 64°F 1021.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 21 mi43 min NW 3.9G7.8 58°F1021.5 hPa (-0.8)
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi55 min NE 6G8 63°F 62°F1021.8 hPa
RTYC1 - 9414523 - Redwood City, CA 24 mi55 min WNW 1.9G2.9 69°F 1021.8 hPa
PCOC1 - 9415144 - Port Chicago, CA 27 mi55 min ENE 8.9G13 63°F 62°F1021.6 hPa
PRYC1 - 9415020 - Point Reyes, CA 31 mi55 min 58°F1021.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi55 min E 6G7 64°F 1021.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 35 mi118 min E 8.9 65°F 1026 hPa58°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 39 mi43 min NNW 9.7G14 59°F 1020.9 hPa (-1.0)57°F

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA14 mi50 minWSW 510.00 miFair66°F59°F78%1020.9 hPa
San Francisco, San Francisco International Airport, CA14 mi47 minE 310.00 miFair65°F59°F81%1020.7 hPa
Hayward, Hayward Air Terminal, CA20 mi49 minWSW 510.00 miFair69°F56°F63%1021.6 hPa
Half Moon Bay Airport, CA21 mi48 minENE 14 G 219.00 miFair73°F54°F50%1020 hPa
San Carlos Airport, CA22 mi56 minN 010.00 miFair70°F54°F57%1021.3 hPa
Concord, Buchanan Field, CA24 mi50 minNNE 610.00 miFair71°F54°F55%1019.9 hPa
Novato / Gnoss Field, CA24 mi68 minN 010.00 miMostly Cloudy63°F63°F100%1021.7 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
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Last 24hrN5N7N7N8W10W13W12W12W10NW8W5NW4W3000000NE4N30N3E3
1 day agoE8E7E6E5SW6SW6SW5SW5SW3NW5NW4W40N3SW30W4S4SE6S3S3E3NE3NE5
2 days agoW16W13W16W13W13W10W8W6S5S4SW4S40N3S40S5S4SE5S6SE7SE7E7E8

Tide / Current Tables for San Francisco, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
San Francisco
Click for Map
Thu -- 07:31 AM PDT     Sunrise
Thu -- 07:42 AM PDT     4.43 feet High Tide
Thu -- 12:22 PM PDT     3.54 feet Low Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:37 PM PDT     Moonset
Thu -- 05:19 PM PDT     4.72 feet High Tide
Thu -- 06:15 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Golden Gate Bridge .8 mi E ., San Francisco Bay, California Current
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Golden Gate Bridge .8 mi E .
Click for Map
Thu -- 01:58 AM PDT     0.00 knots Slack
Thu -- 05:05 AM PDT     2.20 knots Max Flood
Thu -- 07:31 AM PDT     Sunrise
Thu -- 08:39 AM PDT     -0.00 knots Slack
Thu -- 10:54 AM PDT     -0.95 knots Max Ebb
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:18 PM PDT     0.00 knots Slack
Thu -- 02:37 PM PDT     Moonset
Thu -- 04:43 PM PDT     1.08 knots Max Flood
Thu -- 06:15 PM PDT     Sunset
Thu -- 07:11 PM PDT     -0.00 knots Slack
Thu -- 11:01 PM PDT     -2.29 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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