Thursday, November21, 2019 L-36.com


Marine Weather and Tides
San Francisco, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:54AMSunset 4:56PM Thursday November 21, 2019 1:41 PM PST (21:41 UTC) Moonrise 1:07AMMoonset 2:20PM Illumination 27% Phase: Waning Crescent; Moon at 24 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 851 Am Pst Thu Nov 21 2019
Rest of today..E winds 5 to 15 kt, becoming southeast this afternoon.
Tonight..W winds up to 10 kt.
Fri..NE winds up to 10 kt.
Fri night..NW winds up to 10 kt.
Sat..N winds around 5 kt.
Sat night..NW winds up to 10 kt.
Sun..NW winds up to 10 kt.
Mon..NW winds 10 to 20 kt with gusts up to 25 kt.
PZZ500 851 Am Pst Thu Nov 21 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure over southern california will move slowly east. This will bring light east to southeast winds through Friday. Winds will switch to north to northwest late on Friday. A long-period northwest swell will build on Friday and continue through the weekend.


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 211804 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1004 AM PST Thu Nov 21 2019

SYNOPSIS. Gusty winds in the North and East Bay mountains will decrease this morning. Dry conditions, along with seasonable temperatures, are forecast today through the upcoming weekend. Rain chances will develop by late Tuesday of next week and possibly impact the Thanksgiving holiday.

DISCUSSION. as of 09:06 AM PST Thursday . Mainly clear sky conditions and light winds resulted in a chilly morning over much of the region. Temperatures are now warming into the upper 40s to middle 50s and will top out in the lower/middle 60s for much of the region this afternoon. Low level clouds are impacting much of Santa Cruz County this morning under moist southerly flow. Elsewhere, look for dry and mostly sunny conditions through the day. With this said, the ongoing forecast remains on track with no updates needed at this time. Please see the forecast discussion below for additional details.

PREV DISCUSSION. As of 3:19 AM PST Thursday . Latest automated observations indicate some gusty offshore winds are still occurring in the North and East Bay Hills with wind gusts generally in the 30-40 mph range. However, relative humidity values are over 30 percent in these breezier areas. After coordinating with neighboring offices, the Red Flag Warning has been canceled. Satellite imagery reveals mostly clear skies, except some low coastal stratus extending into Santa Cruz County, and some higher clouds over portions of the the southern half of the district.

Dry weather will continue through the rest of the work week and through early next week. Overnight low temperatures are forecast to cool into the 30s to mid 40s during the weekend, coolest in the inland valleys. High temps will be mild, generally in the 60s.

A pattern shift is still looking probable next week. Models remain in relatively good agreement in bringing a cool upper level trough in from the northwest on Tuesday, with widespread rain developing by late that day. Shower chances to persist through midweek with the trough moving east by Friday.

AVIATION. as of 10:04 AM PST Thursday . For 18z TAFs. VFR continues at the TAF sites this morning. Southerly flow is bringing low clouds to Santa Cruz County and off the coast of Monterey and San Mateo Counties. VFR will continue through the afternoon with winds 5-10 kt. Offshore winds this morning will transition to west or southwest this afternoon. MVFR cigs will expand along the coastline this evening. Some low clouds could make their way into the San Francisco Bay terminals overnight tonight into Friday morning.

Vicinity of KSFO . VFR. North to northeast winds around 5 kt becoming light SW after 00Z. Some low clouds could begin to move over the terminal and approach late tonight into Friday morning but confidence on extent is low.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . E-SE winds around 5 kt at MRY and 5-10 kt in the Salinas Valley. Northwest winds at KSNS around 20-21z and southwest at KMRY around 20z. MVFR cigs expected to return this evening.

FIRE WEATHER. As of 3:17 AM PST Thursday . Gusty offshore winds in the hills of the North and East Bay have subsided overnight, but some gusts remain in the 30 to 40 mph range. Relative humidity values remain over 30 percent, however, so the Red Flag Warning has been canceled.

Fire weather concerns will return early next week as medium range models suggest another round of offshore flow impacting the region and be potentially more widespread. Hot dry windy index shows values increasing to nearly 400 by Monday. Stay tuned - fire season is definitely not over until the region receives widespread wetting rainfall.

MARINE. as of 09:06 AM PST Thursday . Low pressure over southern California will move slowly east. This will bring light east to southeast winds through Friday. Winds will switch to north to northwest late on Friday. A long-period northwest swell will build on Friday and continue through the weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. None.

PUBLIC FORECAST: RGass/Sims AVIATION: ST MARINE: ST FIRE WEATHER: Sims/Dykema

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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 mi60 min W 6 G 8.9 58°F 56°F1012.3 hPa
PXSC1 2 mi54 min 58°F 46°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 3 mi54 min NNW 7 G 8.9 57°F 1010.9 hPa
OBXC1 5 mi84 min 58°F 46°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 6 mi60 min WNW 1.9 G 2.9 59°F 1011.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 6 mi60 min SW 1.9 G 2.9
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi37 min N 1.9 58°F 1012 hPa
RCMC1 - 9414863 - Richmond, CA 8 mi54 min 57°F
AAMC1 - 9414750 - Alameda, CA 8 mi60 min W 4.1 G 4.1 58°F 58°F1012.4 hPa
LNDC1 8 mi60 min SW 4.1 G 6 59°F 1011.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi54 min SW 2.9 G 4.1 60°F 1012.3 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi54 min E 8.9 G 9.9 58°F 1011.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 21 mi32 min SE 3.9 G 7.8 56°F 55°F1012.7 hPa
UPBC1 23 mi54 min ENE 5.1 G 6
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi60 min NE 5.1 G 7 56°F 58°F1012.1 hPa
RTYC1 - 9414523 - Redwood City, CA 24 mi60 min NNE 6 G 8 60°F 60°F1012.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 27 mi54 min 58°F
PRYC1 - 9415020 - Point Reyes, CA 31 mi60 min 53°F1011.5 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi60 min ENE 5.1 G 7 58°F 1011.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 35 mi57 min SSE 5.1 63°F 1012 hPa44°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 39 mi32 min SE 12 G 16 56°F 57°F1012.4 hPa52°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 mi49 minW 410.00 miA Few Clouds60°F42°F52%1012.1 hPa
San Francisco, San Francisco International Airport, CA14 mi46 minNNE 610.00 miA Few Clouds61°F45°F56%1011.7 hPa
Hayward, Hayward Air Terminal, CA20 mi48 minVar 610.00 miFair63°F39°F43%1012.8 hPa
Half Moon Bay Airport, CA21 mi47 minSSE 75.00 miMostly Cloudy with Haze59°F50°F72%1012.5 hPa
San Carlos Airport, CA22 mi55 minN 610.00 miA Few Clouds61°F44°F55%1012.2 hPa
Concord, Buchanan Field, CA24 mi49 minN 010.00 miFair62°F44°F52%1010.5 hPa
Novato / Gnoss Field, CA24 mi47 minESE 810.00 miFair63°F46°F56%1012.2 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
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Last 24hrW15W17W15W11W10NW6W8W8W10W9NW3N12N11N12N7NE4E3S4CalmCalmE3NE4NE5N6
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Tide / Current Tables for San Francisco, California
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San Francisco
Click for Map
Thu -- 12:06 AM PST     0.25 feet Low Tide
Thu -- 01:07 AM PST     Moonrise
Thu -- 06:56 AM PST     Sunrise
Thu -- 07:22 AM PST     5.60 feet High Tide
Thu -- 01:10 PM PST     1.76 feet Low Tide
Thu -- 02:20 PM PST     Moonset
Thu -- 04:54 PM PST     Sunset
Thu -- 07:03 PM PST     4.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.51.123.14.25.15.65.54.93.92.92.11.81.92.43.23.94.54.84.53.82.71.6

Tide / Current Tables for Alcatraz Island S, San Francisco Bay, California Current
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Alcatraz Island S
Click for Map
Thu -- 01:07 AM PST     Moonrise
Thu -- 01:58 AM PST     0.01 knots Slack
Thu -- 05:19 AM PST     1.76 knots Max Flood
Thu -- 06:56 AM PST     Sunrise
Thu -- 08:27 AM PST     -0.01 knots Slack
Thu -- 11:01 AM PST     -1.91 knots Max Ebb
Thu -- 02:20 PM PST     Moonset
Thu -- 02:47 PM PST     0.00 knots Slack
Thu -- 04:54 PM PST     Sunset
Thu -- 05:43 PM PST     1.30 knots Max Flood
Thu -- 08:25 PM PST     -0.00 knots Slack
Thu -- 11:13 PM PST     -2.17 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.6-0.900.81.41.71.71.20.4-0.7-1.6-1.9-1.7-1.3-0.70.10.81.21.310.4-0.6-1.7-2.2

Weather Map
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GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (16,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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