Thursday, July29, 2021
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Marine Weather and Tides
San Mateo, 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 6:09AMSunset 8:21PM Thursday July 29, 2021 1:33 PM PDT (20:33 UTC) Moonrise 10:51PMMoonset 10:57AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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- 853 Am Pdt Thu Jul 29 2021
Today..NW winds 5 to 10 kt.
Tonight..NW winds 5 to 10 kt.
Fri..NW winds 5 to 10 kt.
Fri night..W winds 5 to 10 kt.
Sat..SW winds 5 to 10 kt.
Sat night..W winds 5 to 10 kt.
Sun..W winds 10 to 15 kt.
Mon..W winds 10 to 15 kt.
PZZ500 853 Am Pdt Thu Jul 29 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to locally moderate gusty northwest winds across the northern outer waters. Breezy to gusty west winds each afternoon and evening across the san francisco bay north of the bay bridge otherwise light northwest winds through Monday. A moderate period southerly swell will persist in the waters.


7 Day Forecast for Marine Location Near San Mateo, CA
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location: 37.59, -122.31     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 291736 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1036 AM PDT Thu Jul 29 2021

SYNOPSIS. Seasonably warm weather pattern continues inland through Friday with high pressure over the region. A shallow marine layer will persist along the coast keeping temperatures seasonably mild near the coast and bays. A modest cooling trend starts this weekend for inland areas as onshore winds strengthen and the marine layer deepens along the coast.

DISCUSSION. as of 9:28 AM PDT Thursday . Have put the kmux radar into precip mode to better scan some of the high based returns well offshore. Vandenberg and Oakland soundings suggest moisture is above 500 mb so not expecting any convection and it looks to stay offshore as well. Marine layer around 1500 feet deep along the coast with low clouds retreating quickly this morning revealing some of the mid/high level clouds and instability passing south to north. Of note on morning visible satellite is the activity over the southern Sierra that is already bubbling and will likely start earlier than normal across the central/northern Sierra this afternoon. For the Bay Area expect another seasonably hot day inland with widespread 90s and even some lower 100s. Fuels of course remain near or at record dry levels inland/hill locations and yesterdays Pinnacles fire showed how rapidly fires can grow even during routine weather days given the current drought stressed fuels. Fun side note is many of the record highs for today date back to 1977 and preceded that years lightning event that stared the Marble Cone fire locally and many other fires across NorCal.

No big changes of note for Friday. Do expect some inland cooling by this weekend as the marine layer deepens and onshore winds strengthen in response to approaching West Coast trough that will nudge the main ridge farther eastward while fairly significant monsoonal moisture will sneak northward into NV/ID/OR. Long range trends remain seasonably warm and dry into early August for the Bay Area.

AVIATION. as of 10:45 AM PDT Thursday . For the 18z TAFs. Typical midsummer pattern in effect with marine stratus along the coast and monsoonal air aloft. Generally, expect to see VFR today, with FEW- SCT at 15000-20000 feet through the afternoon. Winds generally light and terrain driven in the morning, becoming locally breezy onshore through the coastal gaps in the afternoon. For tonight, a compressed marine layer will bring similar patchy VLIFR- IFR level marine stratus cigs to coastally influenced terminals and lowering mid to high level FEW-SCT 10000-15000 ft cigs elsewhere. Similar pattern tomorrow.

Vicinity of KSFO . VFR through the TAF period. Winds remain mild until afternoon with peak winds from the Northwest around 15-20 kts. These winds look to last through that evening but back off into Thursday night. For tonight, patchy stratus deck returns with borderline MVFR/IFR SCT/BKN deck into mid morning Friday.

KSFO Bridge Approach . Similar to KSFO.

Monterey Bay . Winds remain weak and variable through the morning, before becoming onshore and slightly breezy in the afternoon. Winds weaken and stratus returns in the late evening and early night leading to IFR around the Monterey Bay overnight.

MARINE. as of 10:32 AM PDT Thursday . Generally light to locally moderate gusty northwest winds across the northern outer waters. Breezy to gusty west winds each afternoon and evening across the San Francisco Bay north of the Bay Bridge otherwise light northwest winds through Monday. A moderate period southerly swell will persist in the waters.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . SF Bay from 3 PM



PUBLIC FORECAST: Palmer AVIATION: DRP MARINE: DRP

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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 mi46 min NNW 7 G 9.9 68°F 1014.6 hPa
AAMC1 - 9414750 - Alameda, CA 13 mi46 min W 7 G 8 64°F 68°F1014.6 hPa
LNDC1 14 mi46 min N 6 G 8.9 65°F 1014.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 15 mi46 min W 8.9 G 9.9
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi46 min WSW 6 G 11 62°F 1013.5 hPa
OBXC1 15 mi46 min 62°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 15 mi46 min WNW 8.9 G 11 62°F 1014.2 hPa
PXSC1 15 mi46 min 63°F 63°F
FTPC1 - 9414290 - San Francisco, CA 17 mi52 min W 4.1 G 9.9 58°F 63°F1014.6 hPa
46237 - San Francisco Bar, CA (142) 22 mi64 min 60°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 22 mi53 min N 2.9 66°F 1014 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 22 mi46 min SSW 14 G 21 60°F 1014.5 hPa
RCMC1 - 9414863 - Richmond, CA 24 mi52 min SSE 8.9 G 11 64°F 65°F1014.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi34 min SSW 3.9 G 5.8 1015.5 hPa (-0.4)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 32 mi46 min WSW 11 G 15 67°F 1013.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi46 min WNW 16 G 19 73°F 69°F1012.7 hPa
UPBC1 33 mi46 min WNW 14 G 20
CQUC1 33 mi51 min 68°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi34 min WSW 3.9 G 5.8 56°F 1015.6 hPa (+0.0)56°F
PCOC1 - 9415144 - Port Chicago, CA 35 mi46 min W 18 G 20 73°F 71°F1012.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi46 min NW 13 G 18 76°F 1011.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 45 mi46 min 58°F1015.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 45 mi109 min WNW 8.9 81°F 1013 hPa59°F
46269 48 mi64 min 58°F 60°F2 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA3 mi38 minNW 1410.00 miMostly Cloudy69°F57°F66%1013.7 hPa
San Carlos Airport, CA5 mi99 minN 610.00 miPartly Cloudy72°F61°F69%1014.6 hPa
Oakland, Metro Oakland International Airport, CA9 mi41 minWNW 1410.00 miMostly Cloudy69°F58°F68%1013.9 hPa
Hayward, Hayward Air Terminal, CA11 mi40 minW 910.00 miFair75°F59°F58%1014.4 hPa
Palo Alto Airport, CA13 mi47 minNNW 810.00 miClear72°F61°F69%1014.2 hPa
Mountain View, Moffett Field, CA18 mi44 minNNW 710.00 miFair75°F61°F61%1013.5 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
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Last 24hrNW16NW19NW20
G26
NW21NW17NW16NW18NW13NW11NW12NW12NW11NW9W9NW7NW6W7NW4N3N4N5NE6NW12NW14
1 day agoNW15NW21NW17NW17W20W18NW15NW15NW12NW7NW7W8NW12NW10NW9NW10NW9--NW8N6NE4NE4NW12W17
2 days ago--NE4N104N12NW10NW13NW10NW73NW5NW5W7NW7W5CalmCalmNW7NW7NW5N5NE5N7NW12

Tide / Current Tables for Coyote Point Marina, San Francisco Bay, California
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Coyote Point Marina
Click for Map
Thu -- 04:34 AM PDT     6.26 feet High Tide
Thu -- 06:11 AM PDT     Sunrise
Thu -- 10:54 AM PDT     0.74 feet Low Tide
Thu -- 11:57 AM PDT     Moonset
Thu -- 05:35 PM PDT     6.97 feet High Tide
Thu -- 08:20 PM PDT     Sunset
Thu -- 11:51 PM PDT     Moonrise
Thu -- 11:53 PM PDT     2.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.63.54.65.56.26.25.64.43.11.910.71.22.23.656.16.86.96.35.34.13.12.3

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Thu -- 12:02 AM PDT     0.00 knots Slack
Thu -- 02:32 AM PDT     1.16 knots Max Flood
Thu -- 05:44 AM PDT     -0.00 knots Slack
Thu -- 06:10 AM PDT     Sunrise
Thu -- 08:58 AM PDT     -1.32 knots Max Ebb
Thu -- 11:57 AM PDT     Moonset
Thu -- 12:14 PM PDT     0.00 knots Slack
Thu -- 03:03 PM PDT     1.42 knots Max Flood
Thu -- 06:35 PM PDT     -0.00 knots Slack
Thu -- 08:19 PM PDT     Sunset
Thu -- 09:36 PM PDT     -1.15 knots Max Ebb
Thu -- 11:51 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.71.11.10.90.5-0.1-0.7-1.2-1.3-1.1-0.7-0.20.61.21.41.310.4-0.2-0.8-1.1-1.1-0.9

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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