Thursday, October28, 2021
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Marine Weather and Tides
Hayward, 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 7:28AMSunset 6:15PM Thursday October 28, 2021 1:09 PM PDT (20:09 UTC) Moonrise 11:27PMMoonset 1:36PM 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 Hayward, CA
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location: 37.62, -122.15     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
RTYC1 - 9414523 - Redwood City, CA 8 mi70 min 0G1 70°F 1021.7 hPa (-1.1)
AAMC1 - 9414750 - Alameda, CA 13 mi70 min NW 4.1G6 66°F 62°F1021.1 hPa (-1.3)
LNDC1 14 mi70 min WNW 5.1G7 65°F 1020.8 hPa (-1.2)
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi70 min NW 5.1G7 60°F 1020.9 hPa (-1.2)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi70 min NNW 6G8
OBXC1 16 mi70 min 61°F
PXSC1 18 mi70 min 63°F 63°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi70 min WNW 4.1G8 64°F 1020 hPa (-1.2)
FTPC1 - 9414290 - San Francisco, CA 21 mi70 min N 9.9G12 63°F 1020.8 hPa (-1.4)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 23 mi70 min NNW 13G16 65°F 1021.3 hPa (-1.3)
RCMC1 - 9414863 - Richmond, CA 25 mi70 min NNW 6G8 64°F 61°F1021.4 hPa (-1.1)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi119 min NW 5.1 58°F 1022 hPa
46237 - San Francisco Bar, CA (142) 28 mi70 min 60°F 60°F10 ft
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi70 min NE 5.1G8 64°F 62°F1021.7 hPa (-1.0)
PCOC1 - 9415144 - Port Chicago, CA 31 mi70 min E 9.9G13 64°F 62°F1021.3 hPa (-1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi70 min E 9.9G13 65°F 1021 hPa (-1.1)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi70 min E 5.1G7 64°F 1021.6 hPa (-0.8)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi50 min NW 5.8G7.8 1021.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 41 mi85 min E 8.9 67°F 1026 hPa58°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi50 min NNW 12G14 59°F 1020.7 hPa58°F
46269 48 mi70 min 61°F 59°F5 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA3 mi76 minWSW 510.00 miFair69°F56°F63%1021.6 hPa
Oakland, Metro Oakland International Airport, CA7 mi77 minWSW 510.00 miFair66°F59°F78%1020.9 hPa
San Carlos Airport, CA8 mi83 minN 010.00 miFair70°F54°F57%1021.3 hPa
Palo Alto Airport, CA10 mi83 minN 010.00 miClear70°F55°F60%1021 hPa
San Francisco, San Francisco International Airport, CA11 mi74 minE 310.00 miFair65°F59°F81%1020.7 hPa
Mountain View, Moffett Field, CA14 mi75 minN 08.00 miFair70°F55°F60%1021 hPa
Livermore, Livermore Municipal Airport, CA18 mi77 minENE 1010.00 miFair70°F55°F59%1020.8 hPa
Half Moon Bay Airport, CA20 mi75 minENE 14 G 219.00 miFair73°F54°F50%1020 hPa
San Jose, San Jose International Airport, CA21 mi77 minVar 310.00 miFair72°F56°F57%1020.7 hPa

Link to 5 minute data for KHWD

Wind History from HWD (wind in knots)
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Last 24hrW9W9W11NW11NW6NW5W400NE400NE3000NE3E300W3S6W5W6
1 day ago0S5W5SW4W40W5W3N30NE3NE4NE4E40NE30NE30SE300W6W6
2 days agoW12W11W13W10W7W7W6W5W30SE44SE5S5S4SE7SE7SE5SE6SE8SE7S54SW7

Tide / Current Tables for Alameda Creek, San Francisco Bay, California
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Alameda Creek
Click for Map
Thu -- 01:53 AM PDT     0.13 feet Low Tide
Thu -- 07:30 AM PDT     Sunrise
Thu -- 08:39 AM PDT     4.65 feet High Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:35 PM PDT     Moonset
Thu -- 02:47 PM PDT     0.95 feet Low Tide
Thu -- 06:14 PM PDT     Sunset
Thu -- 06:16 PM PDT     4.96 feet High Tide
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 Little Coyote Pt 3.1 mi ENE, South San Francisco Bay, California Current
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Little Coyote Pt 3.1 mi ENE
Click for Map
Thu -- 03:16 AM PDT     0.49 knots Max Flood
Thu -- 07:24 AM PDT     -0.00 knots Slack
Thu -- 07:30 AM PDT     Sunrise
Thu -- 09:02 AM PDT     -0.27 knots Max Ebb
Thu -- 12:13 PM PDT     0.00 knots Slack
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:36 PM PDT     Moonset
Thu -- 02:54 PM PDT     0.24 knots Max Flood
Thu -- 05:56 PM PDT     -0.00 knots Slack
Thu -- 06:14 PM PDT     Sunset
Thu -- 09:09 PM PDT     -0.65 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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