Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Union City, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:13AMSunset 7:57PM Friday April 28, 2017 10:24 PM PDT (05:24 UTC) Moonrise 7:19AMMoonset 9:44PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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- 909 Pm Pdt Fri Apr 28 2017
Tonight..W winds 10 to 20 kt...becoming N 5 to 15 kt.
Sat..N winds 5 to 15 kt...becoming W 10 to 20 kt in the afternoon.
Sat night..W winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt.
Sun night..W winds 5 to 15 kt.
Mon..NW winds 5 to 15 kt.
Tue..W winds 5 to 15 kt.
Wed..N winds 5 to 10 kt...becoming west.
PZZ500 909 Pm Pdt Fri Apr 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will remain strong and gusty through the weekend as strong high pressure remains offshore. Occasional gale force gusts are possible across the coastal waters. In addition to gusty winds...steep fresh swells with relatively short periods will make seas hazardous this weekend.

7 Day Forecast for Marine Location Near Union City, CA
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location: 37.6, -122     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 290350
afdmtr
area forecast discussion
national weather service san francisco bay area
850 pm pdt Fri apr 28 2017

Synopsis Sunny and warmer today and becoming breezy again
tonight in the hills under offshore flow and clear skies. Winds
will ease Saturday morning giving way to a clear and warm weekend.

Another round of offshore winds possible Monday morning otherwise
continued seasonably warm and dry through Wednesday. Cooling
trend may start by the end of next week.

Discussion As of 8:50 pm pdt Friday... Clear skies and breezy
conditions prevail this evening under the continued influence of
high pressure across the region. Temperatures finished off the day
under clear skies and temperatures in the 60s along the coast and
70s inland with moderate north to northwesterly winds around 10
to 20 mph.

A thermal trough situated along the california coast coupled with
high pressure ridging across the pacific northwest will result in
a tighter pressure gradient across northern and central california
tonight. The northerly gradient from acv to sfo is currently at 7
mb and expected to strengthen overnight. While not as strong as
yesterday northerly winds are forecast to increase to around 15 to
25 mph tonight into Saturday morning with gusts to around 35 mph.

Strongest winds will be over the elevated terrain of the north
and east bays.

Winds should taper by midday Saturday but remain mainly offshore
as high pressure fills in over the great basin. The gradual
warming trend that we have seen over the last couple of day will
kick into high gear Saturday and continue through early next week.

Temperatures will warm anywhere from 3 to 6 degrees Saturday with
an increase of 2 to 3 degrees each day thereafter. High in the
70s and 80s are expected across the region this weekend with some
lower 90s expected in the warmest inland valleys early next week.

Warmest days are expected to be Tuesday and Wednesday.

Winds will remain mostly offshore through midweek with some
period of gusty winds possible as the combination of the thermal
trough and strengthening high pressure over the eastern pacific
tighten the gradient over the region once again.

Clear skies and warm temperatures will prevail through midweek
before the ridge of high pressure begins to break down over the
west coast. By Thursday temperatures will begin to cool back down
to seasonal norms with widespread 60s and 70s. Until then please
use caution when outdoor and protect young children, the elderly
and pets from dehydration, sunburns and heat exhaustion while
never leaving children or pets unattended in vehicles.

Aviation As of 4:30 pm pdt Friday... For 00z tafs.VFR through
the forecast period. Locally gusty west to northwest winds this
evening will gradually diminish overnight. Winds will not be as
strong on Saturday afternoon/evening.

Vicinity of ksfo...VFR. W-nw winds gusting to around 30 knots at
ksfo through 04z then gradually diminishing through the remainder
of the evening and overnight. Winds late Saturday afternoon will
not be as strong as late Friday.

Sfo bridge approach... Similar to ksfo except winds not quite as
strong.

Monterey bay terminals...VFR. Moderate west winds late afternoon
and early evening. Otherwise light winds.

Marine As of 2:20 pm pdt Friday... Northwest winds will remain
strong and gusty through the weekend as high pressure sits off the
coast. Occasional gale force gusts are possible across the
coastal waters. Steep fresh swells with relatively short periods
will make seas hazardous this weekend... In addition to the gusty
winds.

Mtr watches/warnings/advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Mry bay until 3 am
public forecast: cw
aviation: dykema
marine: bam
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 13 mi55 min WNW 5.1 G 6 60°F 64°F1015.9 hPa
LNDC1 20 mi55 min NW 4.1 G 6 63°F 1016.7 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi55 min NNW 4.1 G 5.1 64°F 63°F1017 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi55 min NW 1.9 G 2.9
OBXC1 23 mi55 min 61°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi55 min NW 2.9 G 5.1 60°F 1016.8 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 25 mi61 min WSW 5.1 G 8 64°F 1015.7 hPa
PXSC1 25 mi55 min 64°F 40°F
FTPC1 - 9414290 - San Francisco, CA 29 mi55 min SSW 5.1 G 8 55°F 56°F1017.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi55 min N 4.1 G 5.1 64°F 1017.2 hPa
RCMC1 - 9414863 - Richmond, CA 31 mi55 min N 2.9 G 5.1 62°F 57°F1016.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 31 mi55 min N 8 G 9.9 64°F 1016.3 hPa
UPBC1 31 mi55 min N 9.9 G 12
MZXC1 - 9415102 - Martinez-Amorco CA 31 mi55 min NNE 7 G 8.9 68°F 61°F1017 hPa29°F
PCOC1 - 9415144 - Port Chicago, CA 32 mi55 min SW 1.9 G 2.9 64°F 61°F1016.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 34 mi55 min N 8 G 9.9 67°F 1016.5 hPa
46237 - San Francisco Bar, CA (142) 36 mi55 min 54°F7 ft
SFXC1 - San Francisco Bay Reserve, CA 41 mi100 min NNE 4.1 60°F 1016 hPa36°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi95 min NW 18 G 21 52°F 50°F8 ft1016.9 hPa (-0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 49 mi95 min NW 23 G 29 53°F 52°F10 ft1016.3 hPa (-0.4)

Wind History for Redwood City, CA
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Last
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W19
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G14
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G16
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W17
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G23
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G19
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G35
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SE4
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W9
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G11
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G15
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G16
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G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA8 mi31 minNNW 610.00 miFair63°F44°F50%1017.2 hPa
Palo Alto Airport, CA10 mi38 minWNW 1010.00 miClear61°F44°F55%1016.3 hPa
Mountain View, Moffett Field, CA12 mi29 minN 010.00 miFair59°F44°F58%1017.2 hPa
Livermore, Livermore Municipal Airport, CA12 mi32 minNNW 910.00 miFair65°F28°F25%1015.9 hPa
San Carlos Airport, CA14 mi30 minWNW 610.00 miFair63°F39°F42%1016.9 hPa
Oakland, Metro Oakland International Airport, CA14 mi32 minNNW 910.00 miFair62°F46°F58%1016.5 hPa
San Jose, San Jose International Airport, CA16 mi32 minW 410.00 miA Few Clouds58°F48°F70%1016.7 hPa
San Francisco, San Francisco International Airport, CA19 mi29 minW 1410.00 miFair56°F44°F65%1016.7 hPa
San Jose / Reid / Hillv, CA20 mi38 minNW 510.00 miClear57°F48°F72%1017.6 hPa

Wind History from HWD (wind in knots)
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Last 24hrW6W7W5SE4SE6E3E3NE3E5E3W8W8W11W12W13W15W18W13W14W13W13CalmCalmN6
1 day agoW14
G21
W15
G23
W9W7W7W4CalmCalmSE5SE3N3W7W8W12
G19
W12W12W14W13W15
G22
W13
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W17W6W11W9
2 days agoW7W10W3SW5SW5S6SW7W6W5SW6W8W7W7W9W12W13W12W10W11W10W10W10
G20
W14W13
G18

Tide / Current Tables for Newark Slough, San Francisco Bay, California
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Newark Slough
Click for Map
Sat -- 03:02 AM PDT     8.89 feet High Tide
Sat -- 06:14 AM PDT     Sunrise
Sat -- 09:12 AM PDT     Moonrise
Sat -- 10:25 AM PDT     -1.18 feet Low Tide
Sat -- 04:52 PM PDT     7.45 feet High Tide
Sat -- 07:56 PM PDT     Sunset
Sat -- 10:29 PM PDT     2.27 feet Low Tide
Sat -- 11:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.86.78.28.98.57.45.53.31.2-0.3-1.1-10.21.93.95.777.46.95.84.33.12.42.4

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Sat -- 12:50 AM PDT     1.62 knots Max Flood
Sat -- 04:00 AM PDT     -0.00 knots Slack
Sat -- 06:15 AM PDT     Sunrise
Sat -- 07:07 AM PDT     -1.91 knots Max Ebb
Sat -- 09:13 AM PDT     Moonrise
Sat -- 10:34 AM PDT     0.00 knots Slack
Sat -- 01:48 PM PDT     2.01 knots Max Flood
Sat -- 05:50 PM PDT     -0.00 knots Slack
Sat -- 07:48 PM PDT     -0.82 knots Max Ebb
Sat -- 07:56 PM PDT     Sunset
Sat -- 10:24 PM PDT     0.00 knots Slack
Sat -- 11:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.61.30.70-0.8-1.6-1.9-1.7-1.2-0.50.41.21.921.81.30.6-0.1-0.7-0.8-0.6-0.20.3

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

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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weather_mapweather_map weather_map

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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.