Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Bay Point, CA

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:50AMSunset 7:14PM Tuesday September 17, 2019 1:39 PM PDT (20:39 UTC) Moonrise 8:21PMMoonset 8:58AM Illumination 86% 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- 825 Am Pdt Tue Sep 17 2019
Today..SW winds 5 to 15 kt.
Tonight..W winds 5 to 15 kt.
Wed..SW winds 5 to 15 kt. A slight chance of showers.
Wed night..W winds 5 to 15 kt.
Thu..W winds 5 to 15 kt.
Thu night..W winds up to 10 kt.
Fri..W winds 5 to 15 kt.
Sat..W winds 5 to 15 kt.
PZZ500 825 Am Pdt Tue Sep 17 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light to locally gusty west to northwest winds will prevail over the waters through the middle of the week. The strongest winds will be generally confined along and south of the coastal points, as well as through the coastal gaps and over the bays. A front will move through Tuesday night and Wednesday bringing a slight chance of showers to the northern waters tonight and into Wednesday morning. Northwesterly winds will increase at the end of the week. Mixed seas will continue with a moderate period northwest swell and a light southerly swell.


7 Day Forecast for Marine Location Near Bay Point, CA
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location: 38.04, -121.94     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 171637
afdsto
area forecast discussion
national weather service sacramento ca
935 am pdt Tue sep 17 2019

Synopsis
Dry conditions with warmer temperatures expected today. Another
weather system is forecast to bring showers and a few
thunderstorms Tuesday night and Wednesday, particularly over the
mountains. Conditions will dry out with warm temperatures
returning late this week and continuing into the weekend.

Discussion
Morning update: excellent previous discussion highlights the
incoming wx very well. Given the pw associated with the incoming
frontal band (over 150% of normal), and the similar source region
and trajectory from the preceding system, we have upped the qpfs in
our morning update and will begin messaging a little wetter scenario
than previously thought, and basically trending the forecasts to the
mean of the emc's GEFS plumes.

Convective potential still on track with model forecast soundings
indicating sufficient CAPE in the afternoon for potential for
thunder mainly N of the sac area.

Morning models came in a little cooler on Thu and we may have to
cool MAX temps just a tad from the previous forecasts. Jhm

Previous discussion
A progressive pacific pattern has ushered yesterday's system into
the central great basin. Brief height rises via a shortwave ridge
will afford a temporary period of dry weather. 24-hour mid-level
height comparisons show rises in upwards of 12 dm which offers
warmer temperatures today. Valley highs should range from the upper
70s in the northern sacramento valley to low 80s for points
southward. While only a few degrees warmer than yesterday, much of
the day should be mostly sunny with high clouds arriving late.

The second gulf of alaska system in the chain will arrive late
Tuesday and continue to impact the region Wednesday, possibly
extending into Thursday morning over the high sierra. Broad
ascent ahead of the trough passage will spread light to moderate
showers from north to south across interior northern california.

The 06z NAM continues to show ample moisture advection per pwats
in the 1 to 1.25 inch range along the cold front. Relative to
climatology, this is roughly in the 90th to 95th percentile. Cold
frontal showers will spread through the region, while instability
driven activity falls in the wake underneath the cool, unstable
upper low. Model CAPE forecasts and simulated reflectivities show
a bulk of the latter activity would be over the northern
sacramento valley. Overall, the highest rainfall amounts are
forecast over the southern cascades and sierra with 0.25 to 0.50
inches possible.

Unsettled weather should exit the region on Thursday with skies
clearing out from west to east. With the mean trough centered over
nevada, meridional height gradients set up supporting a period of
dry, northerly flow over the valley on Thursday and continuing
into Friday. Wind fields do not appear particularly strong
although speeds could reach 15 mph or so on Thursday
afternoon evening. A continued moderation in the temperatures will
accompany this shift in the winds with highs in the mid 80s on
Friday. This still sits around 2 to 5 degrees below average in
most locations. ~bro

Extended discussion (Saturday through Tuesday)
A warming trend will continue into the weekend as an offshore
ridge tracks across the west coast. Consequently, valley highs are
forecast to reach the upper 80s to low 90s, while upper 50s to
mid 70s will be more commonplace across mountain locales. While
conditions remain warm over the weekend, a shift in the pattern is
noted in the ensemble guidance. By late Sunday, a digging trough
sets its sights on the western u.S. With a position rather up in
the air. Ensemble spaghetti plots shown by the 00z GEFS indicate a
great deal of west-east spread. The path the resultant upper
low trough takes will dictate whether the region sees another
northerly flow event or perhaps more precipitation. The past few
runs of the GFS favor a track east of the state into nevada while
the 00z ECMWF takes the system overhead. It remains difficult to
trust any individual model given the continued fluctuating tracks.

Definitely worth keeping an eye on given the degree of troughing
suggested by the guidance. ~bro

Aviation
Vfr conditions next 24 hours. Winds less than 12 knots, except local
southwesterly wind gusts 15-20 kts vicinity delta after 00z
Wednesday. A weather system will bring showers across interior
norcal after 06z Wednesday.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 3 mi58 min WNW 5.1 G 8 71°F 1017.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 5 mi58 min W 8 G 8.9 71°F 70°F1017.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 10 mi58 min WNW 9.9 G 11 70°F 71°F1017.5 hPa51°F
UPBC1 10 mi52 min NW 8 G 11
SFXC1 - San Francisco Bay Reserve, CA 12 mi115 min NNW 2.9 73°F 1018 hPa52°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 17 mi52 min WNW 5.1 G 6 70°F 1017.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 24 mi52 min SSW 8.9 G 12 67°F 1018.3 hPa
LNDC1 25 mi52 min W 1 G 6 1017.8 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 26 mi52 min WNW 8.9 G 11 1017.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 26 mi58 min WNW 6 G 8
RCMC1 - 9414863 - Richmond, CA 26 mi52 min 65°F
OBXC1 27 mi58 min 66°F 56°F
AAMC1 - 9414750 - Alameda, CA 27 mi58 min W 2.9 G 4.1 70°F 69°F1018.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 29 mi52 min W 6 G 9.9 71°F 1016.9 hPa
PXSC1 29 mi64 min 70°F 53°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi59 min E 4.1 68°F 1018 hPa
FTPC1 - 9414290 - San Francisco, CA 32 mi58 min WSW 8.9 G 12 63°F 61°F1018.5 hPa
RTYC1 - 9414523 - Redwood City, CA 40 mi52 min N 9.9 G 12 1018.5 hPa
46237 - San Francisco Bar, CA (142) 41 mi70 min 61°F4 ft

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA7 mi47 minNNW 910.00 miFair77°F50°F39%1015.8 hPa
Fairfield / Travis Air Force Base, CA17 mi42 minSW 610.00 miFair82°F47°F30%1017.6 hPa
Napa, Napa County Airport, CA22 mi46 minSSW 710.00 miFair75°F51°F43%1016.4 hPa
Vacaville Nut Tree Airport, CA23 mi47 minVar 410.00 miFair79°F50°F36%1017.1 hPa
Livermore, Livermore Municipal Airport, CA24 mi47 minVar 610.00 miFair76°F46°F36%1016.7 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hr------W12
G25
W9--W7------SW7--S7SE3SE3S4S3--SE3S3CalmCalmN5NW9
1 day agoSW14SW12W13W13SW12--------SW8SW7SW13--S6SW8--W8--SW7S8SW11W10W14
G21
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2 days agoNW8N7W10W125----------------S11S13SW16------S12S14S15S14S15

Tide / Current Tables for Mallard Island Ferry Wharf, Suisun Bay, California
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Mallard Island Ferry Wharf
Click for Map
Tue -- 05:28 AM PDT     3.38 feet High Tide
Tue -- 06:51 AM PDT     Sunrise
Tue -- 09:58 AM PDT     Moonset
Tue -- 11:30 AM PDT     0.70 feet Low Tide
Tue -- 05:23 PM PDT     3.91 feet High Tide
Tue -- 07:12 PM PDT     Sunset
Tue -- 09:21 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.811.62.433.33.332.41.71.10.70.71.11.82.73.53.93.83.52.92.11.40.9

Tide / Current Tables for Stake Point .9 Mi NNW, Suisun Bay, California Current
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Stake Point .9 Mi NNW
Click for Map
Tue -- 12:28 AM PDT     0.00 knots Slack
Tue -- 03:45 AM PDT     0.71 knots Max Flood
Tue -- 06:40 AM PDT     -0.00 knots Slack
Tue -- 06:51 AM PDT     Sunrise
Tue -- 09:24 AM PDT     -0.64 knots Max Ebb
Tue -- 09:58 AM PDT     Moonset
Tue -- 12:18 PM PDT     0.00 knots Slack
Tue -- 03:44 PM PDT     0.95 knots Max Flood
Tue -- 06:42 PM PDT     -0.00 knots Slack
Tue -- 07:12 PM PDT     Sunset
Tue -- 09:21 PM PDT     Moonrise
Tue -- 09:37 PM PDT     -0.74 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.20.20.50.70.70.60.3-0.1-0.4-0.6-0.6-0.4-0.10.30.70.90.90.70.3-0.1-0.5-0.7-0.7-0.6

Weather Map
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wmap_P
GEOS 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 Sacramento, CA (16,3,4,5)
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Ground Weather Radar Station Sacramento, 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.