Monday, May21, 2018 L-36.com


Marine Weather and Tides
Concord, 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 5:50AMSunset 8:18PM Monday May 21, 2018 8:11 AM PDT (15:11 UTC) Moonrise 11:21AMMoonset 12:33AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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- 237 Am Pdt Mon May 21 2018
.small craft advisory in effect from this afternoon through this evening...
Today..S winds 5 to 15 kt...becoming sw 15 to 25 kt in the afternoon.
Tonight..SW winds 15 to 25 kt...decreasing to 10 to 20 kt before midnight.
Tue..SW winds 10 to 20 kt.
Tue night..SW winds 10 to 20 kt.
Wed..W winds 10 to 20 kt.
Thu..SW winds 10 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 237 Am Pdt Mon May 21 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong and gusty northwesterly winds will begin to decrease late tonight as high pressure over the eastern pacific weakens. Thus, steep, short period wind waves will continue to make seas rough and hazardous today, especially for small crafts. Winds will become light to moderate by Tuesday, persisting through the remainder of the week. Long period southwesterly swell will mix with northwesterly swell later this morning and will continue into Wednesday.

7 Day Forecast for Marine Location Near Concord, CA
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location: 38, -122     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 211020
afdsto
area forecast discussion
national weather service sacramento ca
320 am pdt Mon may 21 2018

Synopsis
Afternoon and evening thunderstorms possible over higher terrain
much of this week. Seasonal temperatures continue across the
region.

Discussion
Clear to partly cloudy skies across the region early this morning.

Radar showing some light showers across the higher elevations of
the northern sierra south of tahoe. Onshore pressure gradients
have relaxed compared to 24 hours ago and winds at travis have
also decreased, so not looking favorable for a stratus intrusion
into the sacramento region this morning.

Current temperatures range from the mid 30s to mid 40s in the
mountain valleys to the 50s to lower 60s elsewhere.

Satellite imagery shows the latest low closing off to our south
over central california while a strong vort presently over nw
california is dropping southward. A few light showers may drift
down into the motherlode and northern san joaquin valley this
morning as vertical motion increases across the southeast portion
of the CWA and forecast soundings show rapid moistening. This area
will also see potential for some showers late this afternoon and
evening as decaying activity from the sierra drifts southwestward
toward the san joaquin valley.

Closed low forecast to slowly lift northward through the great
basin Tuesday and Wednesday as the next upstream low approaches
norcal from the west. Shower and thunderstorm activity expected to
be mainly diurnal and limited to higher terrain.

Next system forecast to bring an upswing in shower activity later
Thursday as it approaches the coast near the bay area.

.Extended discussion (Friday through Monday)
guidance shows an upper level low off the ca coast approaching
interior norcal late this week. The upper low will push inland on
Saturday. Forecast models indicate enough instability for a threat
of showers and afternoon evening thunderstorms over higher
terrain, and possibly in the northern sacramento valley. Drier
conditions expected early next week as upper level system moves
into the great basin. Daytime highs expected to remain near
seasonal normals through the forecast period with valley
temperatures in the upper 70s to mid 80s, and 60s to 70s over the
foothills and mountains.

Aviation
MainlyVFR conditions over interior norcal next 24 hours except
MVFR ifr conditions possible in showers and thunderstorms over the
northern sierra nevada after 18z Monday. Gusts up to 25 kts in
delta until 00z Tuesday, increasing to 30 kts overnight. Winds
less than 15 knots at TAF sites.

Sto watches warnings advisories None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 4 mi42 min SW 8 G 9.9 63°F1010.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 7 mi42 min SW 5.1 G 7 64°F1011.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 7 mi42 min WNW 8.9 G 12 57°F 1010.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 14 mi87 min WNW 6 52°F 1010 hPa51°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 15 mi42 min SW 7 G 8.9 55°F 1010.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 20 mi42 min S 6 G 8.9 55°F 1011.8 hPa
LNDC1 21 mi42 min SSW 4.1 G 5.1 54°F 1011.5 hPa
RCMC1 - 9414863 - Richmond, CA 22 mi48 min S 4.1 G 6 54°F 59°F1011.3 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi48 min S 4.1 G 6
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi42 min SSW 5.1 G 7 54°F 1011.6 hPa
AAMC1 - 9414750 - Alameda, CA 22 mi48 min S 4.1 G 6 53°F 62°F1011.7 hPa
OBXC1 23 mi42 min 53°F 51°F
PXSC1 25 mi48 min 55°F 51°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi157 min S 2.9 52°F 1011 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 25 mi42 min S 4.1 G 6 1010.5 hPa
FTPC1 - 9414290 - San Francisco, CA 28 mi48 min SSW 4.1 G 5.1 53°F 55°F1011.8 hPa
RTYC1 - 9414523 - Redwood City, CA 36 mi42 min Calm G 1.9 55°F 64°F1012 hPa
46237 - San Francisco Bar, CA (142) 37 mi42 min 50°F5 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 48 mi32 min NNW 9.7 G 14 51°F 51°F1012.3 hPa51°F

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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W14
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G20
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SW11
G17
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G15
SW14
G19
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G22
S12
G23
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G21
SW9
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G15
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1 day
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S11
G18
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G17
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W11
G14
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G17
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G22
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G21
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G22
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G20
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G17
SW8
G15
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G18
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G18
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G14
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G12
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G13
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G18
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G21
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2 days
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SW7
G13
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G14
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G16
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W15
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W12
G17
SW11
G19
W14
G19
W12
G16
SW7
G12
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G22
SW9
G16
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G16
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G16
S8
G13
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G11
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G14
SW6
G11
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G10
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SW12
SW11

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA3 mi19 minS 1010.00 miFair59°F48°F67%1009.9 hPa
Fairfield / Travis Air Force Base, CA20 mi74 minWSW 1310.00 miFair53°F49°F86%1010.1 hPa
Napa, Napa County Airport, CA21 mi18 minN 010.00 miA Few Clouds0°F0°F%1010.4 hPa
Livermore, Livermore Municipal Airport, CA23 mi19 minVar 410.00 miFair55°F51°F87%1011.1 hPa
Oakland, Metro Oakland International Airport, CA24 mi19 minS 46.00 miA Few Clouds with Haze55°F50°F83%1011.8 hPa
Hayward, Hayward Air Terminal, CA24 mi18 minS 410.00 miFair57°F48°F72%1012.6 hPa

Wind History from CCR (wind in knots)
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Last 24hrS11S12SW14S15
G20
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G23
S14S16S15S18S15S16
G24
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G23
S12S10S12S14S13S11S11S9S9S9S10
1 day agoS16S15S17S20S16S18S16S16S15S15S20S15S18
G24
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G26
S16S15S13SW12SW12S10S10S13SW11SW10
2 days agoS12S13S12S15S14S14S13S11S15S12S15S14
G21
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G21
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G22
S15S17
G22
S14S13S12
G17
SW14
G20
SW14S12
G18
S14

Tide / Current Tables for Port Chicago, Suisun Bay, California
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Port Chicago
Click for Map
Mon -- 01:32 AM PDT     Moonset
Mon -- 01:41 AM PDT     1.67 feet Low Tide
Mon -- 05:52 AM PDT     Sunrise
Mon -- 06:56 AM PDT     4.31 feet High Tide
Mon -- 12:21 PM PDT     Moonrise
Mon -- 02:41 PM PDT     -0.46 feet Low Tide
Mon -- 08:17 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Mon -- 09:25 PM PDT     4.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.21.81.722.83.64.14.34.13.52.71.70.80.1-0.4-0.4-00.81.92.93.74.14.13.6

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
Mon -- 01:12 AM PDT     -0.41 knots Max Ebb
Mon -- 01:32 AM PDT     Moonset
Mon -- 03:17 AM PDT     0.00 knots Slack
Mon -- 05:52 AM PDT     Sunrise
Mon -- 06:29 AM PDT     0.69 knots Max Flood
Mon -- 09:12 AM PDT     -0.00 knots Slack
Mon -- 12:20 PM PDT     Moonrise
Mon -- 12:43 PM PDT     -0.83 knots Max Ebb
Mon -- 04:23 PM PDT     0.00 knots Slack
Mon -- 08:16 PM PDT     Sunset
Mon -- 08:41 PM PDT     0.88 knots Max Flood
Mon -- 08:50 PM PDT     First Quarter
Mon -- 11:44 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.4-0.4-0.10.20.50.70.70.50.1-0.3-0.6-0.8-0.8-0.7-0.5-0.10.20.50.70.90.90.70.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (11,2,3,4)
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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.