Sunday, August19, 2018 L-36.com


Marine Weather and Tides
Livermore, CA

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Sunrise 6:25AMSunset 7:55PM Sunday August 19, 2018 6:22 PM PDT (01:22 UTC) Moonrise 2:11PMMoonset 12:00AM Illumination 61% Phase: Waxing Gibbous; 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- 204 Pm Pdt Sun Aug 19 2018
.small craft advisory in effect from Monday afternoon through Monday evening...
Tonight..SW winds 10 to 20 kt. Haze in the evening.
Mon..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Haze in the afternoon.
Mon night..SW winds 15 to 25 kt.
Tue..SW winds 10 to 20 kt.
Tue night..SW winds 10 to 20 kt.
Wed..SW winds 10 to 20 kt.
Thu..W winds 5 to 15 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 204 Pm Pdt Sun Aug 19 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A thermal trough along the california coast will maintain relatively light to moderate northwest winds across the coastal waters through midweek. Strongest winds are expected over the northern outer waters through Monday afternoon. In addition, onshore westerly winds will be breezy through the golden gate each afternoon. Light to moderate mixed northwest and southerly swell will persist through the rest of the weekend.


7 Day Forecast for Marine Location Near Livermore, CA
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location: 37.6, -121.66     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 200058
afdmtr
area forecast discussion
national weather service san francisco bay area
558 pm pdt Sun aug 19 2018

Synopsis An upper level trough will move into northern
california tonight which will bring cooler temperatures to our
entire region during the first half of the work week. A slight
rebound in temperatures is expected late in the week.

Discussion As of 01:25 pm pdt Sunday... A broad area of upper
level low pressure over the canadian archipelago is peeling off
an orphan upper low over the pacific northwest today. This upper
low is forecast to dive southward from the pac NW into norcal. The
summertime upper high over the desert SW looks to be holding its
ground though and is not expected to let the low drip any farther
south than about the bay area. The upper low is forecast to stall
for the first half of the work week then slowly fill with time as
it shifts off to the east during the second half of the of work
week. This will open the door again for the desert SW upper high
to ridge back into the region.

So what does all this mean? The upper low slipping south into the
greater bay area region will bring a deepening marine layer with
increased onshore flow. This means we'll likely see some coastal
drizzle each of the next few morning, farther inland push of low
clouds and fog, and a slower burn off each morning of this marine
layer. This all equates to a cooling trend in daytime highs. The
other item of note is that we may see the northerly winds on the
western periphery of this upper low entrain some smoke form fires
in the pac NW and canada, driving it down toward the bay area. If
this does occur, smoke is expected to remain in the mid to upper
levels of troposphere and should not mix down. If any mixing
occurs, it will be smoke from fires in oregon, due to lack of
residence time in the atmosphere to mix upward.

High pressure return for the 2nd half of the week. This means a
warming trend for Thursday into the weekend. By the weekend we
could see a shallow marine layer that will burn off quickly.

However, the 500 mb heights are only forecast to reach into the
588 dam range, so the upper ridge does not appear to be strong
enough to support surface temperatures heating up significantly.

Thus look for seasonable temps for the 2nd half of the week and
into the weekend.

Overall onshore winds will maintain a moisture rich environment
and help to limit daytime highs.

Aviation As of 5:58 pm pdt Sunday... Similar to Saturday smoke
and haze over the bay area is reducing slant range visibilities
including limiting horizontal visibilities at times to MVFR
particularly in the north bay and east bay per METAR observations
and webcams. Elsewhere hazy conditions either surface or aloft
continue to reach as far south as the north central coast. Stratus
and fog remain along the immediate coast, over the coastal waters,
and extending locally inland through the golden gate and also into
the salinas valley; MVFR 3-5 miles vsbys in mist fog reported at
khaf and the farallon islands.

More smoke has been entrained in northwesterly coastal winds
originating from wildfires over far northern california and the
pacific northwest; the high-resolution rapid refresh model shows
more smoke arriving in the bay area from these areas Monday. Coastal
stratus and fog moved in farther than expected last night and this
morning, with a slightly deeper marine layer similar areal coverage
is forecast for tonight and Monday morning resulting in CIGS and
vsbys lowering to lifr vlifr. Slant range visibilities are likely
to remain moderate to poor Monday.

Vicinity of ksfo... Hazy visibility based on recent webcam view looking
toward the san mateo bridge, and stratus can be seen looking toward
the san bruno gap. 5 min observations show winds sustained near 20
kts, gusts to 25 kts likely til 04z then lighter westerly wind mid
evening into Monday morning. Low to moderate confidenceVFR holds
for the evening volume, eventually transitioning to ifr beginning
12z and lasting to 17z Monday. Restricted slant range visibility
for the period.

Sfo bridge approach... Moderate to poor slant range visibility for
the period. Otherwise similar to ksfo.

Monterey bay terminals... MVFR CIGS and vsbys lowering to ifr and
spreading inland early to mid evening, lifr vlifr late tonight and
Monday morning. Hazy conditions likely lingering through Monday,
stratus CIGS mixing out by late Monday morning.

Marine As of 01:25 pm pdt Sunday... A thermal trough along the
california coast will maintain relatively light to moderate
northwest winds across the coastal waters through early next week.

Strongest will are expected over the northern outer waters
through at least Monday afternoon. In addition, onshore westerly
winds will be breezy through the golden gate each afternoon. Light
to moderate mixed northwest and southerly swell will persist
through the rest of the weekend.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm until 4 am
public forecast: bfg
aviation: canepa
marine: cw
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 30 mi34 min NNW 13 G 14 66°F 73°F1012.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi34 min NW 9.9 G 14 81°F 1009.2 hPa
AAMC1 - 9414750 - Alameda, CA 36 mi40 min W 8.9 G 11 60°F 69°F1012.6 hPa
LNDC1 36 mi34 min WNW 7 G 8.9 61°F 1012.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 37 mi34 min W 14 G 16 79°F 70°F1009.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi34 min W 8 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi34 min W 8.9 G 11 60°F 1012.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 39 mi34 min W 13 G 14 78°F 71°F1010.1 hPa55°F
OBXC1 39 mi34 min 59°F 57°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi34 min W 7 G 14 59°F 1011.3 hPa
PXSC1 42 mi34 min 58°F 56°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 43 mi34 min SSW 12 G 17 59°F 1012.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi34 min WSW 12 G 15 68°F 1010.4 hPa
FTPC1 - 9414290 - San Francisco, CA 45 mi40 min WSW 5.1 G 13 56°F 60°F1012.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 46 mi97 min WNW 11 84°F 1010 hPa52°F
RCMC1 - 9414863 - Richmond, CA 46 mi34 min 65°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA11 mi29 minWNW 114.00 miHaze Smoke86°F48°F28%1009.8 hPa
San Jose / Reid / Hillv, CA20 mi32 minNW 610.00 miClear79°F59°F51%1010.5 hPa
San Jose, San Jose International Airport, CA21 mi29 minNNW 108.00 miMostly Cloudy75°F59°F58%1011.2 hPa
Mountain View, Moffett Field, CA24 mi86 minNNW 99.00 miFair70°F57°F66%1012.3 hPa

Wind History from LVK (wind in knots)
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Last 24hrW11SW8W6NW4NW5NW3CalmCalmCalmCalmW3NW3NW3W5W434SW7SW7NW9W10NW12W14W11
1 day agoNW11W11NW5W4SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm446W5W8W10W14W12W10
2 days agoNW13NW10NW8NW9W6NW7W6NW4W8NW8NW5NW3NW33Calm3NW4546W9W13W13NW12

Tide / Current Tables for Coyote Creek, Tributary no.1, San Francisco Bay, California
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Coyote Creek
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Sun -- 12:49 AM PDT     Moonset
Sun -- 03:57 AM PDT     0.58 feet Low Tide
Sun -- 06:27 AM PDT     Sunrise
Sun -- 09:32 AM PDT     6.74 feet High Tide
Sun -- 03:12 PM PDT     Moonrise
Sun -- 03:38 PM PDT     2.35 feet Low Tide
Sun -- 07:54 PM PDT     Sunset
Sun -- 08:34 PM PDT     8.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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42.61.50.80.61.12.54.15.66.66.76.15.24.13.12.52.43.356.88.18.37.86.8

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
Sun -- 12:06 AM PDT     -1.00 knots Max Ebb
Sun -- 12:49 AM PDT     Moonset
Sun -- 03:14 AM PDT     0.01 knots Slack
Sun -- 06:06 AM PDT     0.97 knots Max Flood
Sun -- 06:27 AM PDT     Sunrise
Sun -- 09:03 AM PDT     -0.00 knots Slack
Sun -- 12:42 PM PDT     -0.46 knots Max Ebb
Sun -- 03:08 PM PDT     0.00 knots Slack
Sun -- 03:12 PM PDT     Moonrise
Sun -- 05:43 PM PDT     0.77 knots Max Flood
Sun -- 07:55 PM PDT     Sunset
Sun -- 08:33 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-0.9-0.6-0.10.50.810.90.60-0.2-0.4-0.4-0.4-0.4-0.10.40.70.80.60.3-0.1-0.5-0.8

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 (21,6,7,8)
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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.