Friday, April3, 2020
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Marine Weather and Tides
Suisun City, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 6:48AMSunset 7:34PM Thursday April 2, 2020 10:28 PM PDT (05:28 UTC) Moonrise 12:22PMMoonset 2:32AM Illumination 77% Phase: Waxing Gibbous; Moon at 10 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- 831 Pm Pdt Thu Apr 2 2020
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..W winds 10 to 20 kt.
Fri..W winds 5 to 15 kt.
Fri night..W winds 5 to 15 kt.
Sat..SW winds 10 to 15 kt. Rain likely.
Sat night..S winds 5 to 10 kt. Rain likely.
Sun..S winds 10 to 20 kt. Rain.
Sun night..SW winds 5 to 15 kt. Rain likely.
Mon..W winds up to 10 kt. Rain likely.
Tue..W winds up to 10 kt. A chance of showers.
PZZ500 831 Pm Pdt Thu Apr 2 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong northwest winds over the waters with occasional gale force gusts possible through tonight and into Friday. Fresh and steep wind generated waves can be produced, creating hazardous conditions for smaller vessels. Winds will start to subside late Friday and into the weekend. A moderate, predominately winds driven, northwesterly swell will prevail through much of the forecast period.


7 Day Forecast for Marine Location Near Suisun City, CA
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location: 38.21, -122.04     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 022220 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 320 PM PDT Thu Apr 2 2020

Synopsis. Dry and mild weather expected for the work week with breezy northerly winds today. A pair of storms move in over the weekend into early next week bringing rain, gusty winds, chances for thunderstorms, heavy mountain snow, and travel issues.

Discussion. Broad longwave troughing remains fixed over the Pacific Northwest into the northern Rockies with general north-northwesterly flow prevailing over California. The usual KSAC to KMFR gradient is not terribly impressive currently running around 5 mb. Per mesoscale observations, recent wind gusts are maximizing around 20 to 25 mph over Valley and foothill locations. Pressure and height gradients continue to weaken so expecting wind to be less of a threat heading into the evening hours. Otherwise, sunny skies have prevailed today given ample subsidence aloft which has kept relative humidities on the lower side. Friday should look similar to today, albeit with a few additional clouds and an uptick in humidity as northerly flow relaxes.

Dramatic changes in the pattern take shape over the weekend as a pair of troughs impact the state. Significant late season snowfall across the mountains is likely along with Valley/foothill rain, scattered thunderstorms, along with gusty winds. While the initial closed low will bring unsettled weather to the region on Saturday, impacts will be somewhat temporally confined given the progressive nature of the system. The bigger player arrives on Sunday into Monday as a slow-moving, broad upper low barrels down from the Gulf of Alaska. More substantial travel impacts are likely across the mountains for those who must be out on the roads.

While 4 to 8 inches of snow will be possible across the mountains with the first leg of the weekend storms, conditions are likely to become much more impactful on Sunday. Strong forcing with the approaching upper low accompanied by seasonably cold mid-level temperatures (running between -30 and -33C) will be the driver of significant snowfall to the mountains, particularly 4,500 feet and above. Hourly snowfall rates of 2 inches are possible within some of the heftier snow bands. On Sunday alone, some locations over the Sierra-Cascade range could reach 1 to 2 feet of snow with grand totals approaching 3 feet in some locales. A Winter Storm Watch has been issued from roughly early Saturday through late Monday morning for all elevations above 4,500 feet across the interior Northern California mountain ranges. Snow levels will range from 4,000 to 5,000 feet but may lower at times.

Down in the Valley and foothills, expect light to moderate rainfall on Saturday as the trough sweeps through. Forecast amounts generally ranging from 0.25 to 0.50 inches over the Valley with numbers closer to an inch across foothill locations. The associated cold front translates through during the middle of the day which is when precipitation will pick up in intensity. By Sunday, decent vertical shear profiles are noted in model soundings. This would support a threat for a few more organized thunderstorms if they were to evolve. As usual, much will depend on instability which can often be lacking in convective environments in California. Further inland, dynamics with the offshore upper low combined with focused upslope flow will raise amounts into the 1.50 to 2.50 inch range. In terms of wind, periods of breezy southerly winds are likely given the strength of the approaching troughs. Valley wind gusts may maximize out in the 25 to perhaps up to 35 mph. ~BRO

EXTENDED DISCUSSION (Monday THROUGH Thursday). Unsettled weather will continue into the extended period as the trough that will bring active weather over the weekend closes off over central CA. This will bring widespread showers to the area on Monday. We do see some instability build into the Valley Monday afternoon but does look weak and wind shear will be minimal, this will really limit thunderstorm activity. The upper level low will continue to spin over CA and track into SoCal on Wednesday. This is going to keep showers in the forecast with the greatest chances in the afternoon and evening. Showers are not expected to be as widespread Tuesday and Wednesday as forcing will be weaker. Below average temperatures are expected throughout the period with the coolest day Monday.

-CJM

AVIATION. VFR conditions the next 24 hours at the TAF sites. Breezy northerly winds gusting to 20 knots will diminish to under 10 knots by 01z.

STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Watch from Saturday morning through Monday morning for Burney Basin / Eastern Shasta County-Mountains Southwestern Shasta County to Western Colusa County-Shasta Lake Area / Northern Shasta County-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 1 mi104 min SW 4.1
PCOC1 - 9415144 - Port Chicago, CA 11 mi59 min SW 4.1 G 8 53°F 58°F1018.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 13 mi59 min W 8.9 G 12 55°F 59°F1018.3 hPa
UPBC1 13 mi59 min W 12 G 15
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi59 min W 9.9 G 14 57°F 1017.6 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 16 mi59 min W 8.9 G 12 54°F 1018.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 27 mi59 min WNW 16 G 18 54°F 1018.8 hPa
RCMC1 - 9414863 - Richmond, CA 28 mi59 min WNW 8 G 11 53°F 57°F1018.6 hPa
LNDC1 31 mi59 min NNW 4.1 G 5.1 55°F 1018.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 31 mi43 min Calm 52°F 1019 hPa
OBXC1 32 mi59 min 54°F 39°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 32 mi59 min N 7 G 9.9 55°F 1018.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 32 mi59 min NNE 5.1 G 6
AAMC1 - 9414750 - Alameda, CA 33 mi59 min W 4.1 G 6 55°F 60°F1018.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi59 min Calm G 0 54°F 1017.8 hPa
PXSC1 34 mi59 min 55°F 39°F
FTPC1 - 9414290 - San Francisco, CA 36 mi59 min 59°F
46237 - San Francisco Bar, CA (142) 43 mi59 min 55°F7 ft
RTYC1 - 9414523 - Redwood City, CA 49 mi59 min W 11 G 14 53°F 61°F1019.9 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fairfield / Travis Air Force Base, CA8 mi91 minSSW 1110.00 miFair51°F35°F56%1017.9 hPa
Vacaville Nut Tree Airport, CA12 mi36 minN 010.00 miFair50°F35°F57%1017.5 hPa
Napa, Napa County Airport, CA13 mi35 minN 010.00 miFair46°F39°F77%1017.5 hPa
Concord, Buchanan Field, CA16 mi36 minSSW 610.00 miFair55°F32°F42%1017.2 hPa

Link to 5 minute data for KSUU

Wind History from SUU (wind in knots)
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Last 24hrCalmCalmCalmNW7NW9NW12NW12NW11NW11N14
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--Calm------SW15SW13S11SW11
1 day agoS12S16SW13SW13SW8SW9S9S11SW3SW5SW8CalmN8W4S4CalmSW6S3SE6S9SW9SW10SW9SW3
2 days agoSW5SW11SW10SW9SW12SW10SW12SW14SW14SW14SW15SW17SW17
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Tide / Current Tables for Suisun City, Suisun Slough, Suisun Bay, California
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Suisun City
Click for Map
Fri -- 12:30 AM PDT     4.12 feet High Tide
Fri -- 04:19 AM PDT     Moonset
Fri -- 05:52 AM PDT     1.86 feet Low Tide
Fri -- 06:49 AM PDT     Sunrise
Fri -- 10:58 AM PDT     4.84 feet High Tide
Fri -- 02:30 PM PDT     Moonrise
Fri -- 07:07 PM PDT     -0.10 feet Low Tide
Fri -- 07:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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44.13.632.421.92.233.94.64.84.74.13.32.31.40.70.2-0.10.10.923.1

Tide / Current Tables for Montezuma Slough West Entrance, Suisun Bay, California Current
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Montezuma Slough West Entrance
Click for Map
Fri -- 01:17 AM PDT     -0.00 knots Slack
Fri -- 02:49 AM PDT     -0.76 knots Max Ebb
Fri -- 04:19 AM PDT     Moonset
Fri -- 05:59 AM PDT     0.00 knots Slack
Fri -- 06:49 AM PDT     Sunrise
Fri -- 07:52 AM PDT     1.30 knots Max Flood
Fri -- 11:46 AM PDT     -0.00 knots Slack
Fri -- 02:20 PM PDT     -1.73 knots Max Ebb
Fri -- 02:31 PM PDT     Moonrise
Fri -- 07:13 PM PDT     0.00 knots Slack
Fri -- 07:33 PM PDT     Sunset
Fri -- 09:53 PM PDT     1.47 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.1-0.5-0.8-0.7-0.4011.31.20.90.4-0.2-1.2-1.7-1.7-1.5-1.2-0.7-0.10.71.31.51.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (1,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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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 numerous 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.