Tuesday, May22, 2018 L-36.com


Marine Weather and Tides
Newark, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:51AMSunset 8:18PM Tuesday May 22, 2018 12:40 PM PDT (19:40 UTC) Moonrise 12:28PMMoonset 1:13AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 815 Am Pdt Tue May 22 2018
.small craft advisory in effect from 3 pm pdt this afternoon through this evening...
Today..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon.
Tonight..SW winds 15 to 25 kt...decreasing to 5 to 15 kt by midnight.
Wed..SW winds 10 to 20 kt.
Wed night..SW winds 10 to 20 kt.
Thu..SW winds 10 to 20 kt. Slight chance of showers after midnight.
Fri..SW winds 5 to 15 kt. Slight chance of showers.
Sat..W winds 10 kt.
PZZ500 815 Am Pdt Tue May 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds will continue to decrease through the day as high pressure over the eastern pacific weakens. Winds will turn southerly by Thursday morning as a weak low pressure system approaches from the west. This low will bring a chance of showers Thursday through Friday night. A long period southwest swell will persist with a shorter period northwest swell through the majority of the week.

7 Day Forecast for Marine Location Near Newark, CA
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location: 37.47, -122.07     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 221731
afdmtr
area forecast discussion
national weather service san francisco bay area
1031 am pdt Tue may 22 2018

Synopsis A deep marine layer in place this morning with low
clouds extending well inland will lead to another cool and breezy
afternoon. Inland temperatures remain below normal most of this
week. A late season front approaches late Thursday night into
Friday with a slight chance of showers for the north bay and
coastline. Shower chances should end by early Saturday with a
modest warming trend Saturday afternoon through memorial day.

Discussion As of 8:28 am pdt Tuesday... Satellite imagery
continues to show widespread low clouds courtesy of a deep marine
layer. Most airports are still showing ceilings around 1000 to
1500 feet. A few locations around the monterey peninsula saw some
drizzle overnight up to a few hundredths of an inch. Temperatures
are running within a few degrees of this time yesterday over the
north bay and sf bay areas due to persistent overnight and morning
clouds. Some inland clearing is expected late this morning while
many coastal areas could remain under cloudy skies throughout the
day. Extensive cloud cover and a deep marine layer will make for
another breezy afternoon and keep afternoon high temperatures
around 5 to 10 degrees below normal.

No updates to the forecast are needed at this time. For additional
details please see the previous discussion.

Prev discussion As of 2:51 am pdt Tuesday... Fog product shows
a deep marine push of low clouds this morning with most airports
reporting clouds bases between 1000 and 1500 feet. Onshore
gradients have relaxed since last evening but still a robust 2.5
mb from sfo to sac with gusts to around 30 mph through the golden
gate. Synoptic pattern still features an upper low near las vegas
which will keep onshore gradients strong all day today leading to
another afternoon of gusty onshore breezes and below normal temps
regionwide.

Some brief shortwave ridging on weds but expect a well defined
marine layer in place. This in concert with continued strong
onshore flow will keep temperatures below normal with inland
areas stuck in the lower 70s with lower 60s coast bays.

Will be tracking an incoming unseasonably strong upper low and
surface cold front approach on Thursday. 06z NAM brings a band of
showers onshore late Thursday night into Friday morning which is
in agreement with the 00z ecmwf. QPF totals are light, mainly a
few hundredths to around a tenth but up to a quarter inch possible
for the north bay coastal hills. Main impact at this time would
be for the Friday morning commute with some wet roads to start the
long holiday weekend. For now the forecast will show slight
chance of showers with the best chances north bay and coastal
hills.

The core of the upper low will slowly wobble around into early
Saturday morning keeping the shower threat in place but the main
impact felt will be unseasonably cool weather, especially inland.

The low should eject by Saturday afternoon leading to a modest
warming trend Saturday afternoon through memorial day Monday. Euro
model suggests we should see more widespread upper 70s inland by
Sunday with more widespread 80s for memorial day activities.

Aviation As of 10:31 am pdt Tuesday for 18z tafs. Widespread
stratus continues to bring MVFR ifr ceilings across the san
francisco bay area. Visible satellite shows the low clouds
beginning to mix-out in the north bay valleys as of the 18z taf
publication time; however, many of the major bay area airports
remain blanketed. Several terminals will likely stay ovc bkn
through the entire day, and for those that do clear, ceilings will
return again overnight.

Vicinity of ksfo... MVFR ceilings are expected to prevail through
the day as a consequence to the deep marine layer, strong onshore
gradient, and healthy stratus feed pushing through the san bruno
gap from the pacific. Winds will increase in the afternoon to 15
to 20 kt with higher gusts possible. Ceilings will drop again
after sunset, perhaps flirting with ifr levels.

Sfo bridge approach... Could see some sct bkn conditions just south
of the bridge, though overall expecting similar conditions to
that of the terminal.

Monterey bay terminals... MVFR conditions will likely prevail at
kmry during the day. There's a chance ksns could transition from
MVFR to vrf given sufficient mixing, though opted to take the
conservative approach in the taf. Will continue to monitor and
amend if necessary. MVFR ifr conditions expected overnight.

Marine As of 8:15 am pdt Tuesday... Winds will continue to
decrease through the day as high pressure over the eastern pacific
weakens. Winds will turn southerly by Thursday morning as a weak
low pressure system approaches from the west. This low will bring
a chance of showers Thursday through Friday night. A long period
southwest swell will persist with a shorter period northwest swell
through the majority of the week.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm until 12 pm
sca... Sf bay from 3 pm
public forecast: as rww
aviation: rowe
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 8 mi40 min W 13 G 16 57°F 65°F1014.1 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 24 mi40 min SW 8 G 11 55°F 64°F1013.7 hPa (+0.0)
LNDC1 25 mi40 min SW 7 G 12 55°F 1013.5 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 27 mi40 min WSW 8 G 12 56°F 1013.4 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 27 mi40 min SW 11 G 14
OBXC1 27 mi40 min 55°F 52°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 28 mi40 min W 2.9 G 11 55°F 1012.4 hPa (+0.3)
PXSC1 29 mi40 min 56°F 52°F
FTPC1 - 9414290 - San Francisco, CA 31 mi40 min SW 8.9 G 18 55°F 56°F1013.4 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 34 mi40 min S 13 G 17 55°F 1013.3 hPa (+0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 35 mi167 min SE 6 53°F 1013 hPa (+1.0)
RCMC1 - 9414863 - Richmond, CA 36 mi40 min SSE 9.9 G 12 55°F 61°F1012.6 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 37 mi40 min 54°F5 ft
MZXC1 - 9415102 - Martinez-Amorco CA 39 mi40 min WSW 8.9 G 11 62°F 64°F1012.1 hPa59°F
PCOC1 - 9415144 - Port Chicago, CA 41 mi40 min S 13 G 18 61°F 64°F1011.9 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 41 mi40 min WNW 11 G 16 64°F 1011.3 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 42 mi40 min SW 12 G 15 58°F 1012 hPa (+0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi50 min W 9.7 G 12 53°F 54°F7 ft1014.1 hPa (+0.3)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 45 mi30 min W 7.8 G 9.7 52°F 51°F1014.4 hPa52°F
ELXC1 - Elkhorn Slough Reserve, CA 49 mi55 min WNW 5.1 56°F 1014 hPa53°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA3 mi44 minN 1110.00 miMostly Cloudy64°F51°F63%1013.7 hPa
Palo Alto Airport, CA3 mi53 minNW 610.00 miMostly Cloudy0°F0°F%1013.5 hPa
San Jose, San Jose International Airport, CA10 mi47 minN 010.00 miOvercast64°F51°F63%1013.2 hPa
San Carlos Airport, CA10 mi53 minWSW 1210.00 miOvercast59°F50°F72%1013.9 hPa
Hayward, Hayward Air Terminal, CA13 mi46 minW 810.00 miOvercast58°F50°F75%1014.6 hPa
San Jose / Reid / Hillv, CA16 mi4.9 hrsVar 610.00 miOvercast57°F50°F77%1012.5 hPa
Oakland, Metro Oakland International Airport, CA18 mi47 minWSW 115.00 miFog/Mist56°F52°F87%1013.8 hPa
San Francisco, San Francisco International Airport, CA19 mi44 minWSW 1010.00 miOvercast58°F50°F75%1013.6 hPa
Livermore, Livermore Municipal Airport, CA21 mi47 minVar 610.00 miOvercast63°F54°F73%1012.4 hPa
Half Moon Bay Airport, CA23 mi45 minW 80.75 miFog/Mist54°F53°F100%1014.6 hPa

Wind History from PAO (wind in knots)
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Last 24hr--NW13--NW15NW15NW15NW15NW10NW10------------------4Calm----NW4NW6
1 day ago--------------------------------------CalmSE8----N6
2 days agoNW12----W15
G22
--W13W15W12W10------------------W7W6W6--SW10--

Tide / Current Tables for Calaveras Point, west of, San Francisco Bay, California
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Calaveras Point
Click for Map
Tue -- 02:06 AM PDT     2.42 feet Low Tide
Tue -- 02:12 AM PDT     Moonset
Tue -- 05:53 AM PDT     Sunrise
Tue -- 06:57 AM PDT     7.58 feet High Tide
Tue -- 01:28 PM PDT     Moonrise
Tue -- 02:14 PM PDT     -0.11 feet Low Tide
Tue -- 08:16 PM PDT     Sunset
Tue -- 08:52 PM PDT     8.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.72.82.42.84.15.777.67.26.34.83.11.50.4-0.10.21.22.84.76.57.88.17.76.5

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Tue -- 02:12 AM PDT     Moonset
Tue -- 02:25 AM PDT     0.00 knots Slack
Tue -- 04:42 AM PDT     0.77 knots Max Flood
Tue -- 05:53 AM PDT     Sunrise
Tue -- 07:27 AM PDT     -0.00 knots Slack
Tue -- 11:59 AM PDT     -1.08 knots Max Ebb
Tue -- 01:28 PM PDT     Moonrise
Tue -- 02:46 PM PDT     0.00 knots Slack
Tue -- 05:44 PM PDT     1.35 knots Max Flood
Tue -- 08:16 PM PDT     Sunset
Tue -- 08:57 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.5-0.20.30.70.80.60.2-0.2-0.5-0.8-1-1.1-0.9-0.50.20.91.31.31.20.7-0-0.4-0.6

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 (15,3,4,5)
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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.