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Marine Weather and Tides
Version 3.4 |
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 7:11AM | Sunset 4:48PM | Wednesday December 11, 2019 9:42 PM PST (05:42 UTC) | Moonrise 4:41PM | Moonset 6:33AM | Illumination 100% | ![]() |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 824 Pm Pst Wed Dec 11 2019
Tonight..S winds 5 to 10 kt. A chance of rain.
Thu..S winds 5 to 15 kt. A chance of rain.
Thu night..W winds 5 to 10 kt. A chance of rain.
Fri..SW winds 5 to 10 kt. A chance of rain.
Fri night..W winds 10 to 20 kt with gusts up to 25 kt. A chance of rain.
Sat..W winds 5 to 15 kt.
Sat night..W winds 5 to 15 kt.
Sun..NW winds up to 10 kt.
Mon..NE winds 5 to 10 kt. A chance of rain.
Tonight..S winds 5 to 10 kt. A chance of rain.
Thu..S winds 5 to 15 kt. A chance of rain.
Thu night..W winds 5 to 10 kt. A chance of rain.
Fri..SW winds 5 to 10 kt. A chance of rain.
Fri night..W winds 10 to 20 kt with gusts up to 25 kt. A chance of rain.
Sat..W winds 5 to 15 kt.
Sat night..W winds 5 to 15 kt.
Sun..NW winds up to 10 kt.
Mon..NE winds 5 to 10 kt. A chance of rain.
PZZ500 824 Pm Pst Wed Dec 11 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will prevail through Thursday before switching to west to northwest. Northwest winds will increase on Saturday as a cool upper trough passes to the north of the area. Large long-period northwest swell will impact the waters Thursday night through Saturday.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will prevail through Thursday before switching to west to northwest. Northwest winds will increase on Saturday as a cool upper trough passes to the north of the area. Large long-period northwest swell will impact the waters Thursday night through Saturday.
7 Day Forecast for Marine Location Near Bethel Island, CA
Hourly EDIT Helplocation: 38.01, -121.64 debug
Area Discussion for - Sacramento, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS66 KSTO 112257 AFDSTO
Area Forecast Discussion National Weather Service Sacramento CA 257 PM PST Wed Dec 11 2019
SYNOPSIS. Light rain at times through Thursday, heaviest in the mountains. Widespread precipitation also expected later in the week and into the weekend. Drier weather Sunday and early next week.
DISCUSSION. Precip should increase over our forecast area tonight into Thu as a strong 150kt Pac jet south of the GOA (Gulf of AK) low reaches the coast and focuses a +3 PW anomaly into our CWA. The U.S. West Coast AR Tool shows that a "weak" AR (TPW/moisture plume) along 130W will make "landfall" during this time tonight and into Thu. Rising 5H heights will steer the storm track and main dynamics a little farther N and into the Pac NW. But the strong WAA tonite and Thu (over 5 deg C/12 hr in the 850-700 mbs layer) will interact with the moisture plume resulting in steady precip over Norcal, mainly over the Nrn mtns and areas N of I-80. One to two inches of precip is forecast over Shasta Co/Wrn Plumas Co during this time, with amounts tapering off rapidly Swd to the I-80 corridor. South of I-80/US-50, only a few hundredths are expected as the storm track shifts Nwd. Snow levels are relatively high due to the transport of subtropical moisture from Hawaii. The snow profilers indicate a snow level around 5500 ft at Shasta Dam, around 7500 ft at Oroville, and Colfax, and could rise some 500 to 1500 ft overnite due to the WAA.
The wet wx should continue on Fri as 5H heights begin to fall slowly as the GOA trof emerges from its source region. This will keep the TPW plume over our CWA through the day. Model freezing/snow level forecasts came in a little colder than previous runs and we began to lower them a little from earlier forecasts. Looks as if the snow level will drop below the passes along the I-80/US-50 corridor by Fri morning. There is likely to be enough QPF Fri and FRi nite (and maybe into Sat) to warrant a snow advisory as the snow levels drop below the Sierra passes. With the bulk of the precip falling over the Sierra, our total QPF thru 12z Sun is now falling in line within the body of the ECMWF ensembles box/whisker plots for BLU, as an example.
The precip should turn more showery on Sat as the colder/unstable air drops into Norcal as the upper low and trof move across the NErn Pac to the Pac NW/Nrn CA coast before winding down on Sun. Snow levels should drop to 3500 ft Nrn mtns to 4000 ft in the Sierra late Sat, but by then the precip will be diminishing. JHM
EXTENDED DISCUSSION (Sunday THROUGH Wednesday).
The weather system bringing multiple days of rain and snow to northern California will be moving out of the area by early Sunday morning. As troughing moves towards the southwest US, upper level ridging begins to build over the west coast. Dry weather and mostly clear skies are anticipated by mid-afternoon Sunday, with these conditions continuing through at least Monday. Tuesday onward, models have varying solutions for when another trough will impact the area bringing additional chances for precipitation. Went with ensemble guidance for this forecast bringing back wet weather to the area Tuesday, although confidence is still low at this time with the onset of any rain. Temperatures remain fairly steady Sunday into next week with Valley highs topping out in the mid-50s. Mountain locations will mainly see high temperatures in the 30s.
AVIATION.
Widespread MVFR/IFR conditions seen through around 20Z. Brief improvement may be seen before another storm brings -RA after 02Z. MVFR/IFR ceilings return by early morning to all sites. VCSH possible around 12Z at Sac terminals. Winds generally less than 12kts.
STO WATCHES/WARNINGS/ADVISORIES. None.
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapWind History for Port Chicago, CA
(wind in knots) EDIT (on/off)  Help10 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 | 7 PM | 8 PM | 9 PM | |
Last 24hr | E | E | E G9 | E G8 | E | E | NE | NE | NE | NE | NE | NE | NE | NE | NE | E | NE | E | E | NE | E | E | NE | NE |
1 day ago | W | W | W | W | N | NW | E | E | E | E | N | NE | NE | E | NE | NE | NE | E G11 | NE | E G16 | NE | N | E | E |
2 days ago | SW | SW G9 | SW | S | SW G11 | SW G9 | W | W | W | W | W | W G13 | W | W G9 | W | SW | SW |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Concord, Buchanan Field, CA | 22 mi | 50 min | WSW 3 | 4.00 mi | Fog/Mist | 55°F | 51°F | 87% | 1020.8 hPa |
Stockton, Stockton Metropolitan Airport, CA | 22 mi | 48 min | ESE 8 | 5.00 mi | Fog/Mist | 54°F | 50°F | 87% | 1022.3 hPa |
Livermore, Livermore Municipal Airport, CA | 23 mi | 50 min | SE 3 | 6.00 mi | Fog/Mist | 55°F | 52°F | 90% | 1021.9 hPa |
Fairfield / Travis Air Force Base, CA | 24 mi | 1.7 hrs | ESE 4 | 7.00 mi | Light Rain | 53°F | 51°F | 94% | 1023.4 hPa |
Link to 5 minute data for KSCK
Wind History from SCK (wind in knots)
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 | 7 PM | 8 PM | 9 PM | |
Last 24hr | E | E | Calm | E | S | E | E | E | E | SE | S | SE | S | S | SE | S | SE | S | S | SE | SE | SE | SE | SE |
1 day ago | NW | E | Calm | Calm | E | SE | Calm | Calm | SE | Calm | Calm | E | E | Calm | SE | SE | E | S | E | SE | E | S | Calm | N |
2 days ago | NW | W | W | W | NW | W | Calm | Calm | Calm | E | Calm | SE | E | Calm | SW | Calm | NW | W | W | Calm | Calm | NW | NW | NW |
Tide / Current Tables for Irish Landing, Sand Mound Slough, San Joaquin River, California
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataIrish Landing
Click for Map
Thu -- 06:16 AM PST 2.78 feet High Tide
Thu -- 07:13 AM PST Sunrise
Thu -- 07:37 AM PST Moonset
Thu -- 11:01 AM PST 1.38 feet Low Tide
Thu -- 04:31 PM PST 4.04 feet High Tide
Thu -- 04:46 PM PST Sunset
Thu -- 05:29 PM PST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 06:16 AM PST 2.78 feet High Tide
Thu -- 07:13 AM PST Sunrise
Thu -- 07:37 AM PST Moonset
Thu -- 11:01 AM PST 1.38 feet Low Tide
Thu -- 04:31 PM PST 4.04 feet High Tide
Thu -- 04:46 PM PST Sunset
Thu -- 05:29 PM PST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
-0.2 | -0 | 0.5 | 1.3 | 2 | 2.5 | 2.8 | 2.7 | 2.3 | 1.9 | 1.5 | 1.4 | 1.5 | 2 | 2.8 | 3.5 | 4 | 4 | 3.6 | 3 | 2.2 | 1.3 | 0.6 | 0.1 |
Tide / Current Tables for West Island Lt .5 mi SE, San Joaquin River, California Current
EDIT (on/off)  Help One Week of DataWest Island Lt .5 mi SE
Click for Map
Thu -- 12:18 AM PST 0.00 knots Slack
Thu -- 03:34 AM PST 0.34 knots Max Flood
Thu -- 06:31 AM PST -0.00 knots Slack
Thu -- 07:13 AM PST Sunrise
Thu -- 07:37 AM PST Moonset
Thu -- 08:34 AM PST -0.22 knots Max Ebb
Thu -- 10:44 AM PST 0.00 knots Slack
Thu -- 01:52 PM PST 0.48 knots Max Flood
Thu -- 04:30 PM PST -0.01 knots Slack
Thu -- 04:47 PM PST Sunset
Thu -- 05:30 PM PST Moonrise
Thu -- 08:13 PM PST -1.00 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 12:18 AM PST 0.00 knots Slack
Thu -- 03:34 AM PST 0.34 knots Max Flood
Thu -- 06:31 AM PST -0.00 knots Slack
Thu -- 07:13 AM PST Sunrise
Thu -- 07:37 AM PST Moonset
Thu -- 08:34 AM PST -0.22 knots Max Ebb
Thu -- 10:44 AM PST 0.00 knots Slack
Thu -- 01:52 PM PST 0.48 knots Max Flood
Thu -- 04:30 PM PST -0.01 knots Slack
Thu -- 04:47 PM PST Sunset
Thu -- 05:30 PM PST Moonrise
Thu -- 08:13 PM PST -1.00 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
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 |
-0.1 | 0.1 | 0.3 | 0.3 | 0.3 | 0.2 | 0.1 | -0.1 | -0.2 | -0.2 | -0.1 | 0 | 0.2 | 0.4 | 0.5 | 0.4 | 0.1 | -0.2 | -0.6 | -0.9 | -1 | -1 | -0.8 | -0.6 |
Weather Map
(on/off)  Help Weather Map
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 (0,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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