Thursday, August13, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Antioch, 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 6:20AMSunset 8:03PM Thursday August 13, 2020 6:46 PM PDT (01:46 UTC) Moonrise 12:04AMMoonset 2:52PM Illumination 24% Phase: Waning Crescent; Moon at 25 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 201 Pm Pdt Thu Aug 13 2020
Rest of today..SW winds 5 to 15 kt.
Tonight..SW winds 5 to 15 kt.
Fri..SW winds 5 to 15 kt.
Fri night..SW winds 5 to 10 kt.
Sat..SW winds 5 to 15 kt with gusts up to 25 kt.
Sat night..SW winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt.
Mon..W winds 10 to 20 kt.
PZZ500 201 Pm Pdt Thu Aug 13 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Remnant tropical moisture from former hurricane elida will continue to bring chances of Thunderstorms to the southern waters into this evening. Locally gusty winds, rough seas, and frequent lightning with some of these cells will be possible. Otherwise, generally light to moderate northwest winds across the waters through the weekend aside from locally breezy winds over the northern outer waters into this evening. Mixed seas will persist through the period with a short period northwest swell and two longer period southerly swells.


7 Day Forecast for Marine Location Near Antioch, CA
   Hourly   EDIT   Help
location: 38.03, -121.82     debug


Area Discussion for - Sacramento, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KSTO 132143 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 243 PM PDT Thu Aug 13 2020

SYNOPSIS. Dangerous heatwave will impact the Sacramento and San Joaquin Valleys tomorrow and well into next week. Daytime temperatures will be 10 to 20 degrees above normal with little to no overnight relief through next Wednesday. A few isolated thunderstorms are possible over the mountains over the weekend.

DISCUSSION. The focus this next week is the dangerous heatwave forecast to impact much of NorCal. Warming begins today as Valley temperatures mid-afternoon are around 5 to 10 degrees warmer than this time yesterday. Temperatures are expected to peak right around 100 degrees across the Valley and in the 70s to 90s for the foothills and mountains.

Significant heating begins tomorrow and is expected to continue well into next week. The main driver this upcoming, high- impact heatwave is a building upper level ridge that will set up residence for an extended period of time over the Desert Southwest and the Great Basin. Temperatures at 850 millibars will warm from about 22 to 24 deg C now to around 26 to 30 deg C this weekend. Consequently, this synoptic setup will lead to a prolonged, high- impact, and dangerous heatwave tomorrow through next week. Most Valley locations will see temperatures around 102 to 110 degrees through the weekend with foothill temperatures 95 to 106. These forecast temperatures are well above normal for this time of year, around 10 to 20 degrees. Overnight low temperatures will further compound the scope of this heatwave as many communities in the Valley and adjacent foothills will remain in the 70s or even low 80s for several consecutive nights. This will be particularly impactful for those without air conditioning. An Excessive Heat Warning is now in effect for Friday afternoon through Wednesday evening.

That said - there is some uncertainty in regard to high temperatures as the clockwise flow around the ridge will allow for some subtropical moisture in the mid/upper levels of the atmosphere to advect northward to California. Any mid/high clouds would prevent maximum afternoon potential, and could also bring a slight chance of thunderstorms to the some of the higher elevations. On the other hand, increased cloud cover during the overnight hours would potentially keep overnight lows even warmer than presently forecast.

In terms of heat risk, many communities in the Sacramento Valley, northern San Joaquin Valley, and adjacent foothills will be subjected to high to very high heat risk when taking into consideration the very hot afternoon highs, warm overnight lows, and duration of the heatwave - which has the potential to go through at least Wednesday next week (more details in the Extended Section of the discussion). Very high heat risks occur during heat events that are rare, and pose risk to the entire population. Heat related illness to humans and animals is likely with extended outdoor exposure. Heat is the number one weather- related killer in the United States. Please take the necessary precautions to stay hydrated, cool, and safe during this prolonged heatwave. // Rowe/HEC

EXTENDED DISCUSSION (Monday THROUGH Thursday). A strong upper level ridge will remain in place for much of the extended period. This is going to keep dangerously hot temperatures in the forecast at least through Wednesday. 850 mb temperatures will range from 26-30 degrees C which will result in widespread triple digits across the Valley and for much of the Foothills. Tuesday looks to be the hottest day throughout the event as the ridge will be pretty much overhead. Overnight lows are also going to remain warm only falling into the 70s and 80s. Ensembles agree on a trough slowly digging out of the Gulf of Alaska into western BC Thursday into late week. This trough won't break down the ridge but will help to push it south which will start to cool things off a bit but we will still see highs near to just above the triple digit mark.

This very dangerous heat event will have impacts on the general population. Please learn the symptoms of excessive heat exposure, drink plenty of water, stay in an air-conditioned rooms, and never leave pets and children unattended in vehicles.

Some moisture will remain in place over the area for Monday and Tuesday. This will lead to some instability over the higher elevations. There is no forcing but the terrain could be enough to kick off an isolated storm or two in the afternoon near the Sierra crest. No thunderstorms are expected after Tuesday.

-CJM

AVIATION. VFR conditions the next 24 hours at the TAF sites. Southerly winds up to 17 mph in the KRDD and KRBL area through 04z. Winds elsewhere remain under 10 knots.

STO WATCHES/WARNINGS/ADVISORIES. Excessive Heat Warning from noon Friday to 9 PM PDT Wednesday for Carquinez Strait and Delta-Central Sacramento Valley- Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.




Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 4 mi53 min NW 5.1 G 7 88°F 1011.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 12 mi53 min W 12 G 15 91°F 73°F1011.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi53 min WSW 11 G 15 87°F 72°F1011.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 16 mi62 min W 8.9
UPBC1 16 mi53 min W 14 G 17
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 24 mi53 min SW 9.9 G 13 82°F 1011.6 hPa
LNDC1 29 mi53 min N 6 G 7 76°F 1013.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 30 mi53 min SW 15 G 18 69°F 1013.2 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 31 mi53 min NW 8.9 G 11 67°F 1013.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 31 mi53 min W 5.1 G 5.1
AAMC1 - 9414750 - Alameda, CA 31 mi53 min W 7 G 8 77°F 70°F1013.2 hPa
OBXC1 32 mi53 min 72°F 60°F
RCMC1 - 9414863 - Richmond, CA 32 mi53 min S 8 G 11 75°F 68°F1012.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi53 min SW 6 G 9.9 75°F 1012.1 hPa
PXSC1 34 mi53 min 74°F 57°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 35 mi101 min WSW 9.9 81°F 1013 hPa
FTPC1 - 9414290 - San Francisco, CA 38 mi53 min W 6 G 12 64°F 64°F1013.8 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi53 min N 8 G 9.9 84°F 76°F1012.6 hPa
46237 - San Francisco Bar, CA (142) 46 mi47 min 63°F4 ft

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last
24hr
W11
W7
G10
W13
W5
W10
W10
G13
W13
W14
W12
G15
W14
W12
G16
SW11
SW8
SW8
W14
SW11
G15
W10
W10
W8
W7
W6
W7
G10
W6
W5
1 day
ago
W15
G19
SW13
G18
SW12
G15
SW9
G14
SW13
W18
W16
G21
W17
G22
W18
G23
W20
W17
G21
SW14
G19
SW15
G19
W15
W17
G21
W17
W16
W15
W16
W14
W10
G13
W16
W13
G16
W12
2 days
ago
W14
G17
W14
G17
SW10
G13
SW11
G14
SW10
SW13
G16
SW16
SW15
G19
SW14
G18
SW16
SW15
G20
SW13
G18
SW14
G17
SW14
G19
SW17
G22
W17
W20
W21
W21
W19
W17
G21
W16
G22
W13
G20
W14
G17

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi54 minW 1010.00 miFair97°F46°F17%1010 hPa
Fairfield / Travis Air Force Base, CA18 mi49 minSW 1010.00 miFair99°F43°F15%1012.1 hPa
Livermore, Livermore Municipal Airport, CA23 mi54 minWNW 1410.00 miFair95°F45°F18%1011.4 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrNW9NW7CalmCalmCalmNW4NW6N4N4CalmCalmSE3--NW3CalmCalmNW3NW7NW8NW9N8N8NW11W10
1 day agoW10W11W8SW4W6W8W8W4W7W5W5SW6SW3SW4W4NW6NW10NW10NW12NW10NW8NW12NW13NW10
2 days agoW9NW7W7W5W6SW4W7W5SW7SW6SW7SW7SW7SW7W13W12W12W13W13W12W10
G18
W16W12W14

Tide / Current Tables for Antioch, San Joaquin River, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Antioch
Click for Map
Thu -- 01:03 AM PDT     Moonrise
Thu -- 06:21 AM PDT     Sunrise
Thu -- 06:59 AM PDT     0.54 feet Low Tide
Thu -- 01:05 PM PDT     2.58 feet High Tide
Thu -- 03:52 PM PDT     Moonset
Thu -- 05:21 PM PDT     1.74 feet Low Tide
Thu -- 08:02 PM PDT     Sunset
Thu -- 11:21 PM PDT     3.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
3.532.51.91.410.70.50.71.11.522.42.62.52.21.91.81.822.53.13.63.8

Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, California Current
   EDIT      (on/off)   Help   One Week of Data
Antioch Pt .3 mi E
Click for Map
Thu -- 12:47 AM PDT     -0.00 knots Slack
Thu -- 01:03 AM PDT     Moonrise
Thu -- 04:26 AM PDT     -1.47 knots Max Ebb
Thu -- 06:21 AM PDT     Sunrise
Thu -- 09:15 AM PDT     0.00 knots Slack
Thu -- 12:43 PM PDT     1.00 knots Max Flood
Thu -- 03:04 PM PDT     -0.00 knots Slack
Thu -- 03:52 PM PDT     Moonset
Thu -- 05:13 PM PDT     -0.52 knots Max Ebb
Thu -- 07:43 PM PDT     0.00 knots Slack
Thu -- 08:02 PM PDT     Sunset
Thu -- 10:47 PM PDT     1.37 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.6-0.1-0.8-1.3-1.5-1.5-1.3-1.1-0.6-0.10.40.70.910.60-0.3-0.5-0.5-0.30.20.81.31.4

Weather Map
       (on/off)   Help Weather Map
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 (21,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Sacramento, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 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.