Tuesday, November30, 2021
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Marine Weather and Tides
Montara, 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 7:04AMSunset 4:53PM Tuesday November 30, 2021 5:19 PM PST (01:19 UTC) Moonrise 2:41AMMoonset 2:39PM Illumination 12% Phase: Waning Crescent; Moon at 26 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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PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 156 Pm Pst Tue Nov 30 2021
.small craft advisory in effect from late tonight through Wednesday morning...
Tonight..NW winds 10 to 15 kt with gusts up to 30 kt. Wind waves 2 to 3 ft. W swell 5 to 7 ft at 14 seconds.
Wed..N winds 15 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 4 to 6 ft at 13 seconds.
Wed night..SE winds 5 to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft at 16 seconds.
Thu..S winds 5 to 10 kt. Wind waves 1 ft. W swell 6 to 8 ft at 15 seconds.
Thu night..S winds 5 to 10 kt. Wind waves 1 ft. W swell 6 to 8 ft at 14 seconds.
Fri..SW winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 13 seconds.
Fri night..S winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 13 seconds.
Sat..N winds 5 to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft.
Sun..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 2 to 4 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined northwest seas 5 to 6 feet at 13 seconds. Across the bar...combined northwest seas 7 to 8 ft at 13 seconds. Maximum ebb current of 2.0 kt at 01:19 am Wednesday and 3.6 kt at 01:43 pm Wednesday.
PZZ500 156 Pm Pst Tue Nov 30 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Locally breezy across the outer waters and coastal jets this afternoon and into the evening. Northerly winds will gradually subside tonight into tomorrow. Locally lighter offshore winds develop tomorrow out of the golden gate gap Wednesday. Meanwhile, a series of moderate period northwest swell prevails through the week.


7 Day Forecast for Marine Location Near Montara, CA
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location: 37.57, -122.58     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 010009 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 409 PM PST Tue Nov 30 2021

SYNOPSIS. Offshore winds in the hills tonight will keep overnight temperatures mild in the hills leading to another day of above normal highs on Wednesday. Continued mild Thursday with a modest cooling trend into the weekend but temperatures still above seasonable normals and dry through the weekend.

DISCUSSION. as of 02:25 PM PST Tuesday . Mostly sunny and clear skies over our CWA this afternoon. Current temperatures are within a few degrees of where they were this time yesterday as we look at another warm day across the Bay Area and Central CA. The clear skies and warm weather are thanks to the high pressure ridging over NorCal that has previously been discussed. It will persist tomorrow, when we expect our warmest temperatures this week, then the ridge weakens as we move into a gradual cooling trend into the weekend.

We are expecting offshore flow to impact us this evening and overnight, especially across the North Bay hills. However, this is not considered a strong, impactful offshore wind event. Gusts will likely be moderate ranging 25-40 mph with the gusts near 40 mph limited to our higher peaks in the North and East Bays. This offshore flow should keep things drier in our region which should mean that we won't see patchy dense fog in the morning as we have the past few days.

Looking at tomorrow's high temperatures, as said in the previous AFD, we went higher than our NBM guidance since the ECMWF Extreme Forecast Index, shows Central CA in the 80th to 90th percentile for max temperatures. 850 mb temperatures are forecast to range between 17 to near 20 degrees C which is pretty warm for this time of year. The Bay Area will see widespread 70s tomorrow putting daytime highs around 8-15 degrees above normal . some places may be warmer if the offshore flow mixes down into the valley locations, but the inversion will hinder this possibility. We will likely see widespread low 80s for Santa Cruz, San Benito, and Monterey counties which puts daytime highs 10-20 degrees above normal.

Beyond Wednesday, the 850 mb temperatures show a gradual cooling which will translate to the surface. Expect a few degrees of cooling each day Thursday into the weekend as we return to widespread 60s to low 70s by Saturday.

The big question on a lot of people's minds is when will we see rain again. Latest guidance continues to hold off on any rain chances until around December 6 at the earliest. And even at that, the best chances are for the North Bay into SF area as an inside slider moves southward from the Pac NW into CA. If this comes to fruition, then it will likely be a "slight chance" event with light rain amounts. A tenth of an inch looks to be the highest potential total right now in the North Bay. Will continue to monitor the ensemble models to see if this trend of light rain by the end of the first week in December holds.

AVIATION. as of 4:09 PM PST Sunday . For the 00z TAFs. VFR prevailing through the TAF period, aside from possible morning HZ trapped under a stable surface layer. Satellite imagery shows some high cirrus passing over, but otherwise clear conditions over land and the coastal waters as high pressure builds overhead. An increase in NE flow tonight will bring marginal low level wind shear concerns of 20-30kt and some drying of the boundary layer, reducing likelihood and coverage of fog (though not completely eliminating it for sheltered areas). Somewhat breezy offshore upvalley/coastal gap winds possible in places such as the Salinas Valley tomorrow (see KSNS taf).

Vicinity of KSFO . VFR with light to calm winds, becoming light NW this evening. Slight low level wind shear is possible tonight 20-25kt from the NNE around 2000 ft AGL. Hazy conditions Wednesday morning (possible MVFR level vis) and into the early afternoon but dew point depression spread looks too wide to support FG.

KSFO Bridge Approach . Similar to KSFO.

Monterey Bay . VFR through the TAF period. Breezy upvalley winds in the Salinas Valley overnight into Wednesday morning, i.e. 8-13kt with gusts to 15-20kt. Winds becoming light onshore in the afternoon.

MARINE. as of 03:43 PM PST Tuesday . Locally breezy across the outer waters and coastal jets this afternoon and into the evening. Northerly winds will gradually subside tonight into tomorrow. Locally lighter offshore winds develop tomorrow out of the Golden Gate gap Wednesday. Meanwhile, a series of moderate period northwest swell prevails through the week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 AM SCA . Pt Arena to Pt Reyes 0-10 nm until 9 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 9 PM SCA . SF Bay from 3 AM SCA . Pt Reyes to Pigeon Pt 0-10 nm from 3 AM



PUBLIC FORECAST: Bingaman AVIATION: Lorber MARINE: DRP

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 15 mi50 min 56°F 56°F6 ft
FTPC1 - 9414290 - San Francisco, CA 17 mi50 min SSW 2.9G4.1 62°F 1018.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 19 mi30 min NNW 5.8G7.8 56°F7 ft1018.9 hPa
PXSC1 19 mi50 min 67°F 53°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 19 mi50 min W 1.9G4.1 66°F 1017.5 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi50 min NNW 2.9G4.1 66°F 58°F1018.8 hPa
RTYC1 - 9414523 - Redwood City, CA 20 mi50 min ESE 2.9G2.9 67°F 1019.2 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 21 mi50 min 0G1 63°F 1018.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 21 mi50 min NNW 2.9G4.1
OBXC1 21 mi50 min 65°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 22 mi30 min NNW 12G14 56°F 7 ft1018.6 hPa54°F
LNDC1 22 mi50 min N 2.9G5.1 67°F 1018.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 23 mi39 min SW 5.1 64°F 1019 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 26 mi50 min NW 2.9G4.1 70°F 1018.7 hPa
RCMC1 - 9414863 - Richmond, CA 26 mi50 min NW 5.1G7 64°F 58°F1018.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 36 mi50 min 57°F1018.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 38 mi50 min ESE 7G9.9 64°F 1018.3 hPa
CQUC1 39 mi31 min 58°F
MZXC1 - 9415102 - Martinez-Amorco CA 40 mi50 min 0G1.9 64°F 58°F1018.8 hPa
PCOC1 - 9415144 - Port Chicago, CA 44 mi50 min ENE 2.9G2.9 64°F 58°F1019.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 49 mi50 min 0G1 63°F 1018.8 hPa

Wind History for San Francisco, 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, CA6 mi25 minWNW 6 mi55°F55°F100%1017.6 hPa
San Francisco, San Francisco International Airport, CA12 mi24 minE 310.00 miA Few Clouds64°F51°F63%1018.1 hPa
San Carlos Airport, CA18 mi-43107 minN 010.00 miPartly Cloudy70°F46°F43%1018.6 hPa
Oakland, Metro Oakland International Airport, CA21 mi27 minN 010.00 miPartly Cloudy63°F51°F65%1018.5 hPa

Link to 5 minute data for KHAF

Wind History from HAF (wind in knots)
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This dayNW11NW10N8----N6NE40----000000003NW9NW13NW13
G19
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1 day agoNW8N6NW3S600000NW300000S400NW13
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2 days agoN11NE80NW50N3NW5000000000SE3W5SW5SW33NW12NW7N4

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
Click for Map
Tue -- 12:20 AM PST     1.12 feet Low Tide
Tue -- 02:40 AM PST     Moonrise
Tue -- 06:56 AM PST     5.63 feet High Tide
Tue -- 07:05 AM PST     Sunrise
Tue -- 01:32 PM PST     0.68 feet Low Tide
Tue -- 02:38 PM PST     Moonset
Tue -- 04:52 PM PST     Sunset
Tue -- 07:36 PM PST     4.17 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 South Channel, San Francisco Bay Approach, California Current
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South Channel
Click for Map
Tue -- 02:02 AM PST     0.01 knots Slack
Tue -- 02:40 AM PST     Moonrise
Tue -- 05:08 AM PST     1.30 knots Max Flood
Tue -- 07:06 AM PST     Sunrise
Tue -- 08:38 AM PST     -0.00 knots Slack
Tue -- 11:30 AM PST     -1.63 knots Max Ebb
Tue -- 02:38 PM PST     Moonset
Tue -- 03:01 PM PST     0.01 knots Slack
Tue -- 04:51 PM PST     Sunset
Tue -- 05:53 PM PST     1.24 knots Max Flood
Tue -- 09:23 PM PST     -0.00 knots Slack
Tue -- 11:50 PM PST     -1.23 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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