Thursday, January24, 2019 L-36.com


Marine Weather and Tides
Colma, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:18AMSunset 5:24PM Wednesday January 23, 2019 10:05 PM PST (06:05 UTC) Moonrise 8:42PMMoonset 9:21AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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- 847 Pm Pst Wed Jan 23 2019
Tonight..N winds around 5 kt.
Thu..NE winds 5 to 15 kt.
Thu night..NE winds 5 to 10 kt.
Fri..NE winds 5 to 15 kt with gusts up to 25 kt.
Fri night..NE winds up to 10 kt.
Sat..NE winds 5 to 15 kt.
Sat night..NE winds up to 10 kt.
Sun..N winds around 5 kt.
Mon..N winds 5 to 10 kt.
PZZ500 847 Pm Pst Wed Jan 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A 1033 mb high is centered 460 miles west of point arena. This is causing stronger northerly winds over the northern waters. Winds will decrease by Friday as another high moves into the great basin. A small northwest swells with longer period will impact the waters through the week.


7 Day Forecast for Marine Location Near Colma, CA
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location: 37.68, -122.42     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 240543
afdmtr
area forecast discussion
national weather service san francisco bay area
943 pm pst Wed jan 23 2019

Synopsis High pressure over the west coast will result in a
gradual warming trend through Saturday, along with mainly clear sky
conditions and cool overnights. The dry pattern is forecast to
persist through the remainder of the month.

Discussion As of 9:43 pm pst Wednesday... No updates planned
for this evening. Fog product showing just some high clouds with
no valley fog at this time. High pressure to dominate the next
week or so with mostly sunny and mild days followed by clear and
cool nights. Highs generally in the 60s though some 70s may show
up for the central coast over the weekend. Night time lows mid 30s
to mid 40s except around 50 in the city.

Above average confidence for dry weather through the end of the
month as brutally cold intrusions of arctic air will drop east of
the rockies. Eventually the east asian jet may intensify across
the pacific with GFS ensembles showing some light precip chances
by early feb. However, early model simulations show the moisture
coming onshore in the form of weak upper lows.

Prev discussion As of 2:00 pm pst Wednesday... Mainly clear sky
conditions persist over the region this afternoon with
temperatures in the upper 50s to lower 60s. This trend is forecast
to persist into Thursday with slightly warmer daytime
temperatures as 850mb temperatures warm. Subtle warming will
continue into Friday and Saturday with more widespread middle 60s
to lower 70s as weak offshore flow develops. Overnight
temperatures will generally range from the upper 30s to middle 40s
each night. Widespread fog development is not likely, even in the
typically foggy valley locations given the dry air mass in place
and weak offshore winds.

The ridge is forecast to weaken slightly and shift back out over the
pacific by early next week which will allow for slightly cooler
daytime temperatures (more widespread 60s). Dry conditions are
likely region-wide through the end of the month with temperatures
near seasonal averages. The longer range operational models and
ensemble guidance hint at the potential for some light rain around
february 1st or 2nd. Until then, we will continue to monitor.

Aviation As of 4:40 pm pst Wednesday... Hi-res models show
mid and high clouds over the area tonight but no inversion layer.

As a resultVFR conditions will prevail.

Vicinity of ksfo...VFR.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR.

Marine As of 9:00 pm pst Wednesday... A 1033 mb high is
centered 460 miles west of point arena. This is causing stronger
northerly winds over the northern waters. Winds will decrease by
Friday as another high moves into the great basin. A small
northwest swells with longer period will impact the waters through
the week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
public forecast: rww
aviation: W pi
marine: W pi
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi47 min WNW 1.9 G 2.9 54°F 1025.8 hPa
FTPC1 - 9414290 - San Francisco, CA 9 mi53 min SSW 2.9 G 4.1 51°F 54°F1027.1 hPa
AAMC1 - 9414750 - Alameda, CA 9 mi53 min NNW 2.9 G 4.1 53°F 54°F1027.1 hPa
PXSC1 9 mi53 min 54°F 43°F
OBXC1 10 mi47 min 54°F 45°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi47 min NW 4.1 G 5.1 53°F 1026.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 10 mi53 min NNW 4.1 G 5.1
LNDC1 11 mi47 min NW 2.9 G 5.1 54°F 1026.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 15 mi48 min Calm 53°F 1027 hPa
RTYC1 - 9414523 - Redwood City, CA 16 mi47 min W 1.9 G 2.9 53°F 55°F1027.2 hPa
RCMC1 - 9414863 - Richmond, CA 17 mi47 min 54°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 23 mi45 min NW 12 G 14 55°F 55°F1027.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 27 mi47 min N 2.9 G 4.1 51°F 1026.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi53 min Calm G 1.9 49°F 51°F1026.8 hPa49°F
PCOC1 - 9415144 - Port Chicago, CA 33 mi53 min WSW 4.1 G 4.1 47°F 52°F1026.7 hPa
PRYC1 - 9415020 - Point Reyes, CA 37 mi53 min 55°F1026.5 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi47 min W 4.1 G 5.1 50°F 1026.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi80 min N 1.9 42°F 1027 hPa39°F

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA5 mi9 minSE 310.00 miA Few Clouds52°F37°F57%1026.2 hPa
Oakland, Metro Oakland International Airport, CA11 mi12 minN 010.00 miA Few Clouds52°F37°F59%1026.7 hPa
San Carlos Airport, CA14 mi10 minN 010.00 miFair50°F39°F67%1026.4 hPa
Hayward, Hayward Air Terminal, CA16 mi11 minNE 710.00 miFair51°F37°F61%1027.4 hPa
Palo Alto Airport, CA21 mi2.3 hrsN 010.00 miClear54°F41°F63%1027.4 hPa

Wind History from SFO (wind in knots)
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Last 24hrCalmW3CalmSW3S3CalmSW3CalmCalmS3CalmCalmCalmN7N6N8N7N3N5NW8NW6NW5NW4S3
1 day agoW7W5CalmSE4S5N8NW6NW3CalmN8N6N5N6N4CalmCalmCalmE3E3NE3NW5W3CalmS3
2 days agoW16W17W18W16W11W16
G22
W9NW5W7W8W8W15W12W13W16N6N8NE5CalmW12W14W9W9NW7

Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California (2)
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Oyster Point Marina
Click for Map
Thu -- 03:07 AM PST     6.63 feet High Tide
Thu -- 07:19 AM PST     Sunrise
Thu -- 08:40 AM PST     2.17 feet Low Tide
Thu -- 09:58 AM PST     Moonset
Thu -- 02:33 PM PST     7.13 feet High Tide
Thu -- 05:24 PM PST     Sunset
Thu -- 09:06 PM PST     -0.44 feet Low Tide
Thu -- 09:52 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.34.96.16.66.35.44.232.32.22.73.856.2776.24.82.91.20-0.4-0.10.9

Tide / Current Tables for Sierra Point 1.3 mi ENE, South San Francisco Bay, California Current
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Sierra Point 1.3 mi ENE
Click for Map
Thu -- 03:16 AM PST     -0.01 knots Slack
Thu -- 05:58 AM PST     -0.96 knots Max Ebb
Thu -- 07:18 AM PST     Sunrise
Thu -- 08:51 AM PST     0.01 knots Slack
Thu -- 09:58 AM PST     Moonset
Thu -- 11:49 AM PST     0.92 knots Max Flood
Thu -- 02:48 PM PST     -0.00 knots Slack
Thu -- 05:24 PM PST     Sunset
Thu -- 06:11 PM PST     -1.41 knots Max Ebb
Thu -- 09:27 PM PST     0.00 knots Slack
Thu -- 09:52 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.10.70.2-0.4-0.8-1-0.8-0.40.10.50.80.90.80.4-0.1-0.7-1.2-1.4-1.3-0.9-0.30.30.8

Weather Map and Satellite Images
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wmap_P
GOES 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (1,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.