Friday, December6, 2019
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Marine Weather and Tides
Suisun City, CA

Version 3.4
NOTICE
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.
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 7:09AMSunset 4:49PM Friday December 6, 2019 11:17 AM PST (19:17 UTC) Moonrise 2:02PMMoonset 1:35AM Illumination 74% 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- 847 Am Pst Fri Dec 6 2019
.small craft advisory in effect until 3 pm pst this afternoon...
.gale warning in effect from 3 pm pst this afternoon through late tonight...
Today..SE winds 10 to 20 kt with gusts up to 30 kt. A chance of rain this afternoon.
Tonight..S winds 15 to 25 kt with gusts up to 40 kt. Rain.
Sat..S winds 15 to 25 kt with gusts up to 40 kt. Rain and a slight chance of Thunderstorms.
Sat night..SW winds 10 to 20 kt with gusts up to 30 kt. Rain.
Sun..SW winds 5 to 15 kt. A chance of rain.
Sun night..NW winds 5 to 15 kt.
Mon..NW winds around 5 kt.
Tue..NE winds up to 10 kt. Winds and wind waves higher in and near Thunderstorms.
PZZ500 847 Am Pst Fri Dec 6 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A storm system will move through the waters from north to south over the next 24 hours, bringing unsettled weather today into the weekend. As a result, southerly gale force gusts will develop across the waters today. These winds will generate large wind waves and hazardous seas. Moderate west swell will gradually build to around 10 to 12 feet tonight and continue through Saturday night. Showers and isolated Thunderstorms will be possible this evening through Saturday.


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 061132 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 332 AM PST Fri Dec 6 2019

SYNOPSIS. Another strong winter storm will bring periods of rain, mountain snow, strong winds and hazardous travel Friday and into the weekend. Dry conditions return next week with near average temperatures.

DISCUSSION. Deep closed low (about a -4 standardized height anomaly) vicinity of 40N/135W will bring another round of impactful winter wx to Norcal this weekend. Hazardous mountain travel due to periods of heavy snow, roadway flooding, strong winds, and thunderstorms containing small hail (graupel) are expected at times over the next 3 days.

The U.S. West Coast AR Landfall Tool shows a moderate TPW plume (AR) on our doorstep, and at 37-41 deg N latitude putting the Feather River basin and 80/50 corridor right in its path. Heavy mountain snow with significant travel impacts is expected to begin later this evening for elevations above 6000-6500 ft. NAM BUFKIT for BLU begins precip around 05z Sat (or 9 pm PST Fri), and likely a couple hrs earlier for Wrn Plumas Co given the storm's trajectory.

Another soaking rain is expected with 1 to 3 inches of rain forecast for the Valley and 4 to over 6 inches of liquid precip for the Nrn mtns/W Slope Sierra. Several feet of snow is expected over the high Sierra. Snow levels should lower below 6 kft on Sun as the upper low drops Swd over our Norcal. Satellite indicates a well developed comma cloud (baroclinic leaf) with lots of cold, unstable air associated with it. As this colder air approaches our area Sat, and moves over CWA on Sun, thunderstorms are likely in our CWA, especially Sat afternoon and evening as the upper low moves into Norcal. On Sun, the storms could be more confined to just the east side of the Valley and West Slope Sierra given the trajectory and timing of the upper low. Small hail/graupel is likely with these storms as indicated by the "thin CAPE" on the forecast soundings. Precip forecast to wind down Sun nite, followed by dry wx to start the work week.

NAM model REF forecasts, along with the NBM QPFs, suggest a line of intense rainfall is possible Sat afternoon from the Lake Co area, across the Sac Vly and into the Feather River basin before becoming more scattered and generally less organized over the West Slopes early in the evening. This is when we could see some roadway flooding from a few hours of locally heavy rainfall rates of a quarter to a half inch per hr over the coastal range and valley, and over a half inch per hr in the Feather River Basin. Looks as if only an hr or two of these heavy rates over the coastal range before the line moves through, with about 3-4 hrs over the Feather Basin. Travel over the high Sierra could be impacted with near "whiteout" conditions from mid afternoon Sat and into early Sat evening.

Additionally, Sly pressure gradients should tighten dramatically with the approaching surface front leading to WAD criteria for the Valley as a 50+ kt LLJ (NAM 925 mbs winds) develops Fri evening. Breezy to windy conditions should last into Sat. Similar to the last event, the isothermal lapse rates caused by the WAA will preclude downward momentum transfer of all of the LLJ wind. As a rule-of- thumb, the peak wind gusts end up to be about 2/3 of the 925 mbs winds in these isothermal profile cases. The ECMWF ensemble wind gusts for RDD indicates the potential for a AWW (airport wx warning) for gusts in excess of 40 mph.

Drier conditions expected to spread from N to S over our CWA on Sun and Sun night as the upper low drops S of our area and heights begin to rise. Dry Nly flow prevails over Norcal on Mon. JHM

EXTENDED DISCUSSION (Tuesday THROUGH Friday).

Ensemble guidance for the extended forecast shows the ridge that builds over on Monday us holds steady for Tuesday with a weak trough trying slide over NorCal for Wednesday. NBM guidance and even deterministic models are in agreement that the Coastals, Cascades, and perhaps even the northern Sierra could squeeze some light precip out of this disturbance. Once this slides through ensembles show ridging building back over California, with zonal flow looking likely for the weekend. NBM guidance carries a bit of PoP over the mountainous terrain, but overall expect the forecast to be mostly dry.

AVIATION.

The forecast is on track this morning with stratus lingering around the area. Some sites have been observing MVFR conditions because of this, with even dipping into IFR/LIFR for brief periods. Wind and mixed cloud levels will likely keep the fog situations brief, with most areas seeing periods of MVFR conditions before daybreak.

Looking further ahead, we'll see an atmospheric river moving into NorCal today. High clouds are already being observed via satellite, limiting our view of the pesky stratus this morning. Expect to see lowering ceilings and visibility later today as rain moves into the region, spreading from the northwest to the southwest. For terminals in the mountains, snow levels are forecast to remain above 6000-7000 feet for the TAF cycle. Winds are expected to be from the south around 10-20kt, increasing to 15-30 kt after 03Z. Gusts up to 30-45kt are expected in the Valley, with stronger gusts forecast for the mountains.

STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Warning from 4 PM this afternoon to 1 PM PST Sunday for 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 mi92 min ENE 5.1 52°F 1018 hPa
PCOC1 - 9415144 - Port Chicago, CA 11 mi47 min NE 6 G 7 50°F 53°F1017.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 13 mi47 min ENE 5.1 G 6 51°F 53°F1017.7 hPa51°F
UPBC1 13 mi47 min E 7 G 8
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi47 min ESE 6 G 7 52°F 1017.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 16 mi47 min E 12 G 14 52°F 1016.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 27 mi47 min SE 15 G 25 63°F 1016.9 hPa
RCMC1 - 9414863 - Richmond, CA 28 mi53 min SE 6 G 8.9 60°F 54°F1016.2 hPa
LNDC1 31 mi47 min SE 14 G 20 62°F 1016.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 31 mi132 min SE 9.9 58°F 1017 hPa
OBXC1 32 mi47 min 62°F 50°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 32 mi47 min SSE 12 G 18 63°F 1016.5 hPa
AAMC1 - 9414750 - Alameda, CA 33 mi53 min ESE 14 G 17 60°F 53°F1016.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi47 min ESE 18 G 20 57°F 1015.1 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi53 min ESE 12 G 17 61°F 54°F1016.7 hPa
46237 - San Francisco Bar, CA (142) 43 mi47 min 54°F6 ft
RTYC1 - 9414523 - Redwood City, CA 49 mi107 min ESE 8.9 G 12 61°F 55°F1017.8 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 mi79 minENE 40.25 miFog52°F50°F95%1018.9 hPa
Vacaville Nut Tree Airport, CA12 mi24 minN 05.00 miFog/Mist53°F51°F93%1018.2 hPa
Napa, Napa County Airport, CA13 mi23 minE 128.00 miOvercast57°F52°F83%1015.6 hPa
Concord, Buchanan Field, CA16 mi24 minNNW 71.00 miFog/Mist53°F50°F89%1016 hPa

Link to 5 minute data for KSUU

Wind History from SUU (wind in knots)
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Last 24hrE6E7E3E3E4NE6NE6NE3NE7N6N8--SE3CalmCalmE4E4CalmCalmCalmCalmCalmE4Calm
1 day agoN7N6N6NE6NE7N5N6N8
G17
NE9NE8NE6N4CalmCalmCalmN3N4--N5N5N6N6NE6NE6
2 days agoNE12E8E9E7E7E6NE5NE4----E5NE3E4SE4E3N4NE8N7N7N7--N12N11N9

Tide / Current Tables for Suisun City, Suisun Slough, Suisun Bay, California
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Suisun City
Click for Map
Fri -- 01:35 AM PST     Moonset
Fri -- 04:31 AM PST     0.48 feet Low Tide
Fri -- 07:10 AM PST     Sunrise
Fri -- 10:52 AM PST     4.64 feet High Tide
Fri -- 02:02 PM PST     Moonrise
Fri -- 04:47 PM PST     Sunset
Fri -- 05:45 PM PST     0.67 feet Low Tide
Fri -- 11:06 PM PST     3.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.721.30.80.50.511.92.93.84.44.64.33.62.821.30.80.71.11.82.53.13.4

Tide / Current Tables for Montezuma Slough West Entrance, Suisun Bay, California Current
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Montezuma Slough West Entrance
Click for Map
Fri -- 12:46 AM PST     -1.25 knots Max Ebb
Fri -- 01:35 AM PST     Moonset
Fri -- 04:46 AM PST     0.00 knots Slack
Fri -- 07:10 AM PST     Sunrise
Fri -- 07:22 AM PST     1.61 knots Max Flood
Fri -- 11:33 AM PST     -0.00 knots Slack
Fri -- 02:02 PM PST     Moonrise
Fri -- 02:03 PM PST     -1.41 knots Max Ebb
Fri -- 04:48 PM PST     Sunset
Fri -- 06:03 PM PST     0.00 knots Slack
Fri -- 08:06 PM PST     1.01 knots Max Flood
Fri -- 11:32 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-1.2-1.1-0.9-0.40.31.21.61.61.40.90.4-0.4-1.1-1.4-1.3-1-0.5-00.710.90.70.3

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 (14,3,4,5)
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Ground Weather Radar Station Sacramento, CA
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