Thursday, October28, 2021
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Marine Weather and Tides
Bolinas, 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 6:17PM Thursday October 28, 2021 1:47 PM PDT (20:47 UTC) Moonrise 11:31PMMoonset 1:40PM Illumination 45% 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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PZZ571 Waters From Point Reyes To Pigeon Point 10-60 Nm- 936 Am Pdt Thu Oct 28 2021
.small craft advisory in effect through Friday morning...
Today..NW winds 10 to 20 kt. Wind waves 3 to 4 ft, decreasing to 2 ft this afternoon. NW swell 10 to 12 ft at 16 seconds.
Tonight..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 9 to 11 ft at 15 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. NW swell 7 to 8 ft at 13 seconds.
Fri night..NW winds 10 to 15 kt. Wind waves around 2 ft. NW swell 6 to 8 ft at 13 seconds.
Sat..NW winds 5 to 10 kt. Wind waves 1 ft. NW swell 7 to 9 ft at 11 seconds.
Sat night..W winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 12 seconds.
Sun..S winds 10 to 15 kt. Wind waves 1 ft. NW swell 3 to 5 ft and nw up to 2 ft. A chance of rain.
Mon..S winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft and W 5 to 7 ft. 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 Bolinas, CA
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location: 37.67, -123.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 281940 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1240 PM 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 12:40 PM PDT Thursday .

This Afternoon through Friday:

A high amplitude mid/upper ridge will support surface high pressure across the region. This will bring us warm and dry conditions. The only concern is for fog/low stratus development late tonight into Friday morning. A consensus of the high-resolution forecast models suggest this potential is greatest for coastal/valley locations in the North Bay, with a few members spilling this over into coastal South Bay locations. Locally dense fog is possible so make sure to allow extra travel time for your morning commute in these areas. Otherwise look for seasonally pleasant temperatures with highs mostly in the upper 60s and 70s.

Saturday and Sunday:

A closed upper low will progress through Northern CA early in the period. While shower chances should generally remain north of our area temperatures should cool as the associated cold front passes through. Highs this weekend should be mostly in the upper 50s and 60s, with some lower 70s possible across southern Monterey County. Lows will be in the upper 40s to mid 50s so a jacket may be in store for those out trick-or-treating this weekend.

Monday through Thursday:

A progressive flow pattern will evolve aloft as a few weather systems impact the area. The first should bring rain chances for late Sunday night into Monday. Rain should first develop over the North Bay before moving southeast with time. Definitely not another historic storm, but it should bring us more in the way of beneficial rainfall.

Another round of rain is possible towards mid to late week. However details in the evolution of the weather pattern are somewhat unclear, so stay tuned for details. As mentioned previously the good thing here is that the long range models are keeping the storm door open for our area.

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 12:35 PM PDT Thursday . 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.

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: SPM AVIATION: McCorkle MARINE: Diaz

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi38 min WNW 5.8G9.7 58°F1020.6 hPa
PRYC1 - 9415020 - Point Reyes, CA 24 mi54 min 59°F1020.6 hPa
46214 - Point Reyes, CA (029) 25 mi52 min 58°F12 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 26 mi38 min NW 12G18 59°F 1020.1 hPa58°F
46237 - San Francisco Bar, CA (142) 29 mi48 min 60°F 60°F9 ft
FTPC1 - 9414290 - San Francisco, CA 37 mi54 min N 9.9G12 65°F 1020.3 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi67 min NNW 8.9 62°F 1021 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi54 min NW 7G11 65°F 1019.5 hPa
PXSC1 41 mi54 min 65°F 65°F
RCMC1 - 9414863 - Richmond, CA 43 mi54 min NW 6G8 64°F 61°F1020.7 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi54 min NNW 11G13 64°F 1020 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi54 min NE 1.9G5.1
OBXC1 44 mi54 min 65°F
BDXC1 45 mi102 min 58°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 45 mi54 min NNW 12G15 70°F 1020.7 hPa
AAMC1 - 9414750 - Alameda, CA 46 mi54 min NW 4.1G6 68°F 62°F1020.5 hPa
LNDC1 47 mi54 min WNW 5.1G7 69°F 1020.2 hPa

Wind History for Point Reyes, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA36 mi53 minENE 11 G 1710.00 miFair75°F54°F47%1019.6 hPa

Link to 5 minute data for KHAF

Wind History from HAF (wind in knots)
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Last 24hrNW12NW12NW9NW12NW13N10NW9NW7N6NW600NW4000000N5NE8
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2 days agoW7W9W6
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NW6NW5000000000S3SE5S6S5--S6S96--S7

Tide / Current Tables for Southeast Farallon Island, California
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Southeast Farallon Island
Click for Map
Thu -- 07:03 AM PDT     4.13 feet High Tide
Thu -- 07:33 AM PDT     Sunrise
Thu -- 12:03 PM PDT     3.54 feet Low Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:39 PM PDT     Moonset
Thu -- 04:40 PM PDT     4.42 feet High Tide
Thu -- 06:17 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 Point Reyes, California Current
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Point Reyes
Click for Map
Thu -- 12:48 AM PDT     0.00 knots Slack
Thu -- 03:56 AM PDT     0.73 knots Max Flood
Thu -- 07:32 AM PDT     -0.00 knots Slack
Thu -- 07:34 AM PDT     Sunrise
Thu -- 09:30 AM PDT     -0.41 knots Max Ebb
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 01:08 PM PDT     0.00 knots Slack
Thu -- 02:40 PM PDT     Moonset
Thu -- 03:34 PM PDT     0.36 knots Max Flood
Thu -- 06:04 PM PDT     -0.00 knots Slack
Thu -- 06:17 PM PDT     Sunset
Thu -- 09:37 PM PDT     -0.98 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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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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