Sunday, March18, 2018

Marine Weather and Tides
Pacheco, CA

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 7:13AMSunset 7:19PM Saturday March 17, 2018 10:57 PM PDT (05:57 UTC) Moonrise 6:38AMMoonset 6:40PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 843 Pm Pdt Sat Mar 17 2018
Tonight..NE winds 5 kt. Slight chance of showers late in the evening. Patchy dense fog after midnight.
Sun..NE winds 10 kt. Patchy dense fog in the morning.
Sun night..NW winds 10 kt.
Mon..NE winds 10 kt.
Mon night..SW winds 10 kt.
Tue..E winds 15 to 25 kt. Chance of rain, then rain likely.
Wed..SE winds 5 to 15 kt...becoming S 15 to 25 kt. Rain likely.
Thu..W winds 15 to 25 kt. Chance of showers, then slight chance of showers.
PZZ500 843 Pm Pdt Sat Mar 17 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Weak high pressure off the california coast will bring light northwest winds through Sunday. Winds will shift to southerly on Sunday night and increase Monday and Tuesday as a deep low tracks northeast across the offshore waters. Gale force winds or gusts is possible Tuesday with large mixed swells.

7 Day Forecast for Marine Location Near Pacheco, CA
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location: 37.98, -122.07     debug

Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 180523
area forecast discussion
national weather service san francisco bay area
1023 pm pdt Sat mar 17 2018

Synopsis Showers will end in all areas by late evening. Expect
a cool night tonight with low temperatures in the 30s in most
valleys. Patchy dense fog may develop late tonight and persist
into Sunday morning. Dry weather, along with a warming trend, is
forecast from Sunday into Monday ahead of the next storm system.

The next system will bring widespread rainfall to our region from
Tuesday through Thursday, along with the potential for heavy rain
and locally strong southerly winds.

Discussion As of 9:05 pm pdt Saturday... Our weather has
settled down this evening after an active day that included
isolated thunderstorms, rotating storms over the coastal waters,
and numerous reports of small hail. Shower activity rapidly
decreased late in the day as surface heating diminished. Current
radar shows almost no returns and expect precipitation to end in
all areas by late evening.

Skies have been clearing since sunset and temperatures have
already cooled into the mid 40s across inland areas. Primary
concern in the short term is how low temperatures will drop
overnight and whether freezing temperatures may occur by sunrise
Sunday. Surface dewpoints are currently in the lower 40s in most
areas and the WRF model indicates only marginal low level drying
overnight. This low level moisture should help keep temperatures
from dropping to freezing in most areas and it's likely that we
will see patchy dense fog develop by late tonight. Forecast
overnight lows tonight mostly range from the mid 30s to mid 40s,
although a few of the colder inland locations may drop briefly to
near freezing around sunrise. In these areas we may see some
patchy freezing fog which could make for slippery roadways early
on Sunday.

The upper trough that brought our region several days of showery
weather will move well off to our east by tomorrow and a shortwave
ridge will develop over california. This ridge will result in
modest warming on Sunday along with dry conditions. Continued dry
weather along with more significant warming is expected on Monday
when the ridge over california amplifies downstream of a
deepening storm system well offshore.

The storm that will develop offshore early next week is expected
to tap into subtropical moisture. A plume of very moist air with
precipitable water values in excess of 1.5 inches is forecast to
begin arriving over california by Tuesday. Warm advection along
with orographic forcing is expected to begin generating widespread
rainfall across california on Tuesday. The GFS has been rather
consistent in initially focusing the moisture plume over south-
central california which would mean heaviest rain on Tuesday would
be from monterey county southward. However, the 00z NAM shows
rather uniform precipitation intensity across our forecast area on
Tuesday, which is similar to the 12z ecmwf. Thus, there continues
to be uncertainty regarding the location of heaviest rainfall.

The upper trough is forecast to approach the coast on Wednesday
and Wednesday evening and this is when heavier rain rates will
likely be more widespread across our area, and also when southerly
winds will be strongest. Widespread rain is expected to change to
showers by Thursday morning (gfs) or Thursday evening (ecmwf) as
the trough moves inland. Needless to say there are still a lot of
details with this system that need to be sorted out, but the
overall message here is that most of california should be
prepared for potentially heavy precipitation and windy conditions
during the middle portion of next week.

Aviation As of 10:35 pm pdt Saturday... Showers have diminished
rapidly leaving just a few clouds this evening. Low level
moisture remains near the surface which will allow for MVFR cigs
to develop around the sfo bay area after 12z.

Vicinity of ksfo... Possible MVFR CIGS after 12z. Any CIGS that
develop will be patchy in nature and should burn off after 16z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Some low clouds remain along the coastal
range which will keep brief MVFR CIGS to mry through 08z. Drainage
wind will clear out the clouds after 08z. OtherwiseVFR.

Marine As of 10:15 pm pdt Saturday... Weak high pressure off the
california coast will bring light northwest winds through Sunday.

Winds will shift to southerly on Sunday night and increase Monday
and Tuesday as a deep low tracks northeast across the offshore
waters. Gale force winds or gusts is possible Tuesday with large
mixed swells.

Mtr watches warnings advisories
Tday None.

Public forecast: dykema
aviation: W pi
marine: W pi
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 5 mi39 min ESE 2.9 G 4.1 46°F 54°F1018.7 hPa46°F
PCOC1 - 9415144 - Port Chicago, CA 6 mi39 min S 6 G 8 46°F 55°F1018.5 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 11 mi39 min W 1.9 G 1.9 47°F 1018.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi39 min SSW 4.1 G 5.1 48°F 1018.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 15 mi72 min Calm 41°F 1018 hPa40°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi39 min WNW 1 G 2.9 49°F 1018.9 hPa
LNDC1 17 mi39 min Calm G 1 49°F 1018.5 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi39 min E 1 G 1.9 48°F 1018.7 hPa
RCMC1 - 9414863 - Richmond, CA 18 mi45 min WNW 5.1 G 6 49°F 54°F1018.3 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 19 mi39 min ENE 2.9 G 4.1
AAMC1 - 9414750 - Alameda, CA 19 mi45 min E 1 G 1.9 49°F 56°F1018.7 hPa
OBXC1 19 mi39 min 49°F 44°F
PXSC1 21 mi39 min 51°F 43°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi39 min WNW 2.9 G 5.1 49°F 1017.6 hPa
FTPC1 - 9414290 - San Francisco, CA 24 mi45 min SSW 2.9 G 2.9 47°F 54°F1018.9 hPa
46237 - San Francisco Bar, CA (142) 33 mi57 min 53°F5 ft
RTYC1 - 9414523 - Redwood City, CA 34 mi39 min S 2.9 G 2.9 47°F 57°F1019.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 44 mi67 min NNW 7.8 G 9.7 51°F 53°F6 ft1018.5 hPa (+0.9)
PRYC1 - 9415020 - Point Reyes, CA 48 mi39 min W 5.1 G 8 54°F1018.4 hPa

Wind History for Union Pacific Rail Road Bridge (UPRR), CA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA1 mi64 minSE 410.00 miFair46°F39°F79%1017.1 hPa
Napa, Napa County Airport, CA19 mi63 minESE 410.00 miFair38°F36°F93%1017.4 hPa
Oakland, Metro Oakland International Airport, CA21 mi64 minENE 310.00 miA Few Clouds46°F43°F89%1018.6 hPa
Hayward, Hayward Air Terminal, CA22 mi63 minENE 410.00 miFair46°F39°F77%1019.5 hPa
Fairfield / Travis Air Force Base, CA22 mi59 minSSW 710.00 miFair40°F39°F96%1018.6 hPa
Livermore, Livermore Municipal Airport, CA23 mi64 minN 010.00 miFair40°F39°F97%1018.6 hPa

Wind History from CCR (wind in knots)
Last 24hrSW6S4S7S7S6CalmS6SE3S4CalmS7S5E5SE7SE4SW8S8SW4NW9SW7SW4W3S4SE4
1 day agoS7S8SW10SW6S7S8SW3S5S6S8S8SW7W10SW11SW13W12W13W15
2 days agoSW6W6S5SW6SW4S3S5S6S9S9S9S9SW13S16S10S18

Tide / Current Tables for Suisun Point, Carquinez Strait, California
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Suisun Point
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Sun -- 03:06 AM PDT     5.05 feet High Tide
Sun -- 07:14 AM PDT     Sunrise
Sun -- 08:10 AM PDT     Moonrise
Sun -- 09:23 AM PDT     0.86 feet Low Tide
Sun -- 03:11 PM PDT     4.92 feet High Tide
Sun -- 07:18 PM PDT     Sunset
Sun -- 08:43 PM PDT     Moonset
Sun -- 09:23 PM PDT     0.56 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Roe Island S, Suisun Bay, California Current
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Roe Island S
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Sun -- 01:56 AM PDT     0.90 knots Max Flood
Sun -- 05:12 AM PDT     -0.00 knots Slack
Sun -- 07:14 AM PDT     Sunrise
Sun -- 08:10 AM PDT     Moonrise
Sun -- 08:13 AM PDT     -1.77 knots Max Ebb
Sun -- 11:55 AM PDT     0.00 knots Slack
Sun -- 02:18 PM PDT     0.82 knots Max Flood
Sun -- 05:20 PM PDT     -0.00 knots Slack
Sun -- 07:18 PM PDT     Sunset
Sun -- 08:20 PM PDT     -1.94 knots Max Ebb
Sun -- 08:43 PM PDT     Moonset
Sun -- 11:57 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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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 (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 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 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.