Monday, July23, 2018 L-36.com


Marine Weather and Tides
South San Francisco, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:05AMSunset 8:26PM Monday July 23, 2018 8:34 AM PDT (15:34 UTC) Moonrise 4:20PMMoonset 1:51AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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 San Francisco Bay North Of The Bay Bridge- 304 Am Pdt Mon Jul 23 2018
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
.small craft advisory in effect from Tuesday afternoon through Tuesday evening...
Today..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Tonight..SW winds 15 to 25 kt. Gusts up to 30 kt in the evening.
Tue..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Tue night..SW winds 15 to 25 kt.
Wed..SW winds 15 to 25 kt.
Thu..SW winds 10 to 20 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 304 Am Pdt Mon Jul 23 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A long period southerly swell will enter the coastal waters this morning and mix with a northwesterly swell into Wednesday morning. Gusty northwesterly winds will be mainly confined to the southern coastal waters early this week and gusty onshore winds will also redevelop over the bays today and again Tuesday afternoon and evening. As high pressure builds over the offshore waters this will result in a general increase in northwesterly winds over all coastal waters from mid to late week.

7 Day Forecast for Marine Location Near South San Francisco, CA
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location: 37.65, -122.36     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 231159
afdmtr
area forecast discussion
national weather service san francisco bay area
459 am pdt Mon jul 23 2018

Synopsis A gradual warming trend is forecast through midweek
with very warm to hot temperatures expected across the interior.

Meanwhile, onshore flow and shallow marine layer will maintain
mild temperatures near the coast. Inland areas are expected to
cool slightly during the second half of the week.

Discussion As of 3:15 am pdt Monday... Marine stratus has been
slow to develop overnight along the coast south of san mateo
county, and low clouds have been even slower to develop inland.

Latest fort ord profiler indicates that the marine layer depth
decreased from about 1500 feet last evening to just over 1000 feet
at the present time. Low clouds will likely become more
widespread along our southern coast prior to sunrise. But given
the decreased depth of the marine layer, there will likely be less
low cloud cover across inland areas this morning compared to
yesterday morning. This should result in slightly warmer
temperatures for most inland areas today. A gradual warming trend
is then expected to continue through midweek, especially inland,
as the center of the upper ridge that dominates the southwestern
u.S. Shifts from new mexico westward towards southern california.

Most model guidance indicate that the warmest days this week will
be Tuesday and Wednesday. Widespread highs in the 90s are
expected for the inland valleys and hills of the san francisco bay
area on those two days, and some of the warmest locations may
reach triple digits. However, the warmest airmass is expected to
be across the southern portion of our forecast area. Specifically,
inland monterey county and much of san benito county are expected
to see highs ranging from the upper 90s to 110. These hot
temperatures will result in increased heat risk, especially in the
hills where overnight temperatures will only cool into the 70s. A
heat advisory remains in effect for the mountains and inland
valleys of monterey and san benito counties from noon Tuesday
through 9 pm Wednesday. Isolated locations in the north bay near
lake berryessa may see high levels of heat risk, but most
locations outside of monterey and san benito counties are not
expected to see heat risks rise above the moderate category.

Model guidance indicates gradual cooling during the second half
of the week as the upper ridge weakens slightly. However, based on
latest forecast temperatures, there may be a need to extend the
heat advisory for inland monterey and san benito counties into
Thursday. Some relief from the heat is expected in all areas by
Friday and Saturday.

Throughout the week, onshore flow is expected to persist, along
with at least a shallow marine layer at the coast. These factors
will keep coastal temperatures mild compared to inland areas. In
transition areas between the coast and the inland valleys hills,
in locations such as the coastal valleys, temperatures will be
sensitive to the depth of the marine layer. A relatively shallow
marine layer during the first half of the week will mean warm
conditions in the coastal valleys. But these areas will likely
cool the most during the second half of the week as the marine
layer deepens.

Aviation As of 4:59 am pdt Monday... Marine stratus and fog are
making a return this morning spreading southward along the coast
and extending into the bay area. Diurnal mixing will help lift
cigs this morning, onshore winds will increase later today likely
bringing stratus and fog back inland this evening. Increasing
700-300 mb layer humidity may cause some mid to high level
cloudiness today and tonight.

Vicinity of ksfo... Stratus patches are nearby, MVFR cig possible
til 17z today. Gusty west winds in the afternoon and early evening.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Ifr CIGS until late morning,VFR this
afternoon. Stratus likely returning this evening.

Marine As of 3:04 am pdt Monday... A long period southerly
swell will enter the coastal waters this morning and mix with a
northwesterly swell into Wednesday morning. Gusty northwesterly
winds will be mainly confined to the southern coastal waters early
this week and gusty onshore winds will also redevelop over the
bays today and again Tuesday afternoon and evening. As high
pressure builds over the offshore waters this will result in a
general increase in northwesterly winds over all coastal waters
from mid to late week.

Mtr watches warnings advisories
Tday Sca... Pigeon pt to pt pinos 0-10 nm from 2 pm
sca... Sf bay from 1 pm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Mry bay from 2 pm
public forecast: dykema
aviation marine: canepa
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi40 min W 4.1 G 7 59°F 69°F1019.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 10 mi34 min W 5.1 G 8.9 58°F 1018.2 hPa (+0.9)
OBXC1 11 mi34 min 59°F 58°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 11 mi40 min W 6 G 8.9
PXSC1 11 mi40 min 59°F 57°F
LNDC1 11 mi34 min WSW 5.1 G 7 59°F 1019.1 hPa (+0.7)
OKXC1 - 9414776 - Oakland (Berth 34), CA 11 mi34 min WNW 6 G 8.9 59°F 1019.2 hPa (+0.8)
FTPC1 - 9414290 - San Francisco, CA 12 mi40 min W 6 G 11 58°F 63°F1019.4 hPa
RTYC1 - 9414523 - Redwood City, CA 13 mi34 min NNW 5.1 G 6 61°F 75°F1019.5 hPa (+0.7)
46237 - San Francisco Bar, CA (142) 17 mi64 min 61°F3 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi34 min SE 1.9 G 5.1 61°F 1019.2 hPa (+0.7)
RCMC1 - 9414863 - Richmond, CA 19 mi40 min WSW 1.9 G 4.1 60°F 66°F1018.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi24 min WNW 7.8 G 12 56°F 59°F1019.5 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi34 min 69°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 29 mi34 min W 8 G 13 61°F 1018.4 hPa (+1.2)
PCOC1 - 9415144 - Port Chicago, CA 33 mi40 min WSW 18 G 22 62°F 70°F1017.8 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi44 min NW 9.7 G 12 58°F 59°F4 ft1019.6 hPa (+0.3)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi34 min WNW 15 G 20 67°F 1016.3 hPa (+0.6)
PRYC1 - 9415020 - Point Reyes, CA 41 mi40 min NW 8.9 G 11 62°F1018.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi49 min W 12 61°F 1017 hPa54°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, CA2 mi38 minW 810.00 miMostly Cloudy59°F55°F87%1019 hPa
Oakland, Metro Oakland International Airport, CA8 mi41 minW 75.00 miFog/Mist59°F55°F90%1019.2 hPa
San Carlos Airport, CA10 mi47 minN 510.00 miMostly Cloudy63°F57°F83%1019 hPa
Half Moon Bay Airport, CA12 mi39 minNNW 74.00 miFog/Mist57°F55°F94%1019.3 hPa
Hayward, Hayward Air Terminal, CA13 mi40 minWNW 610.00 miOvercast62°F55°F80%1020 hPa
Palo Alto Airport, CA17 mi47 minNNW 76.00 miFog/Mist63°F59°F88%1019.3 hPa
Mountain View, Moffett Field, CA22 mi38 minN 610.00 miOvercast60°F57°F93%1019.4 hPa

Wind History from SFO (wind in knots)
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Last 24hrNW8NW11NW12NW15W17W17W19
G25
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1 day agoNE5N7N8N7NW13NW16W18W21W21W19W14W16W13W16W11NW11W10W10W8W8W6W7W8W10
2 days agoNE6N7NE8N8N8N8CalmS8S145NW11NW13NW11NW11NW12NW10NW8NW7NW7NW7W5NW4NW3Calm

Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California
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Oyster Point Marina
Click for Map
Mon -- 02:50 AM PDT     Moonset
Mon -- 04:37 AM PDT     0.09 feet Low Tide
Mon -- 06:05 AM PDT     Sunrise
Mon -- 11:08 AM PDT     5.38 feet High Tide
Mon -- 04:06 PM PDT     2.70 feet Low Tide
Mon -- 05:20 PM PDT     Moonrise
Mon -- 08:25 PM PDT     Sunset
Mon -- 10:12 PM PDT     7.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.23.72.20.90.20.10.71.62.8455.45.24.53.732.72.93.74.866.97.47.1

Tide / Current Tables for Oyster Point 2.8 mi E, South San Francisco Bay, California Current
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Oyster Point 2.8 mi E
Click for Map
Mon -- 01:47 AM PDT     -1.52 knots Max Ebb
Mon -- 02:50 AM PDT     Moonset
Mon -- 05:07 AM PDT     0.01 knots Slack
Mon -- 06:05 AM PDT     Sunrise
Mon -- 08:26 AM PDT     0.93 knots Max Flood
Mon -- 11:25 AM PDT     -0.01 knots Slack
Mon -- 02:45 PM PDT     -0.68 knots Max Ebb
Mon -- 04:55 PM PDT     0.00 knots Slack
Mon -- 05:20 PM PDT     Moonrise
Mon -- 07:58 PM PDT     0.71 knots Max Flood
Mon -- 08:25 PM PDT     Sunset
Mon -- 10:39 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-1.5-1.5-1.4-0.9-0.10.40.70.90.90.60.2-0.3-0.6-0.7-0.7-0.500.40.60.70.60.3-0.2

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 (11,2,3,4)
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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.