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Marine Weather and Tides
Version 3.4 |
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support. |
Sunrise 7:11AM | Sunset 5:21PM | Wednesday January 27, 2021 6:57 PM PST (02:57 UTC) | Moonrise 4:18PM | Moonset 6:41AM | Illumination 100% | ![]() |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 202 Pm Pst Wed Jan 27 2021
This afternoon..SE winds 10 to 20 kt with gusts up to 35 kt. Showers.
Tonight..SE winds 15 to 25 kt with gusts up to 40 kt. Showers and a slight chance of Thunderstorms.
Thu..SW winds 15 to 25 kt with gusts up to 40 kt. Showers and a slight chance of Thunderstorms.
Thu night..SW winds up to 10 kt. Showers likely.
Fri..N winds around 5 kt.
Fri night..SW winds up to 10 kt. A chance of rain.
Sat..SE winds 5 to 15 kt. A chance of rain.
Sun..S winds 5 to 10 kt. Rain likely. Winds and wind waves higher in and near Thunderstorms.
This afternoon..SE winds 10 to 20 kt with gusts up to 35 kt. Showers.
Tonight..SE winds 15 to 25 kt with gusts up to 40 kt. Showers and a slight chance of Thunderstorms.
Thu..SW winds 15 to 25 kt with gusts up to 40 kt. Showers and a slight chance of Thunderstorms.
Thu night..SW winds up to 10 kt. Showers likely.
Fri..N winds around 5 kt.
Fri night..SW winds up to 10 kt. A chance of rain.
Sat..SE winds 5 to 15 kt. A chance of rain.
Sun..S winds 5 to 10 kt. Rain likely. Winds and wind waves higher in and near Thunderstorms.
PZZ500 202 Pm Pst Wed Jan 27 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... The atmospheric river jogged northward today and is currently focused over the southern waters including the big sur coast and Monterey bay. Local gale to storm force southerly winds and very steep fresh southerly seas are possible south of the atmospheric river. North of the front, winds have weakened significantly but remain breezy and out of the south. Winds north of the front will become breezy to gusty (up to 35kt) during the afternoon and into the evening. Isolated to scattered showers and Thunderstorms north of the front are expected today and may bring brief heavy rainfall, hail, erratic gusty winds, or generate waterspouts. Otherwise, a steep northwest swell will move through the waters today alongside the fresh wind driven seas.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... The atmospheric river jogged northward today and is currently focused over the southern waters including the big sur coast and Monterey bay. Local gale to storm force southerly winds and very steep fresh southerly seas are possible south of the atmospheric river. North of the front, winds have weakened significantly but remain breezy and out of the south. Winds north of the front will become breezy to gusty (up to 35kt) during the afternoon and into the evening. Isolated to scattered showers and Thunderstorms north of the front are expected today and may bring brief heavy rainfall, hail, erratic gusty winds, or generate waterspouts. Otherwise, a steep northwest swell will move through the waters today alongside the fresh wind driven seas.
7 Day Forecast for Marine Location Near Plymouth, CA
Hourly EDIT Help
location: 38.48, -120.84 debug
Area Discussion for - Sacramento, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS66 KSTO 272331 AFDSTO
Area Forecast Discussion National Weather Service Sacramento CA 331 PM PST Wed Jan 27 2021
SYNOPSIS. A long duration, high impact winter storm will continue to impact the region through Friday. Periods of gusty winds, moderate to heavy rain and blizzard conditions over the Northern Sierra. Potential for burn scar impacts to the LNU Complex and SCU Complex burn scars.
DISCUSSION. The strong winter storm continues to bring weather impacts across interior Northern California through tomorrow night. The high winds from overnight decreased by the morning hours. Significant damage and widespread power outages were reported across the southern Sacramento Valley, northern San Joaquin Valley, and the mountains with the strong winds. Winds today remain gusty with gusts up to 25 to 35 mph, locally higher in the mountains. Snow also fell down to the valley floor in the northern Sacramento Valley. The city of Redding received anywhere from 1.5 inch of snow at the airport on the south side of town to 10 inches at the higher elevations in the city. Snow levels have risen to above 2500 to 3500 feet over the mountains today.
Precipitation became more showery this morning through early afternoon for much of the area as expected. Radar imagery shows the next wave of moderate to heavy precipitation is beginning to spread into the forecast area from the south as the upper trough begins to funnel atmospheric moisture north. Precipitation is expected to move north through the evening with the heaviest expected generally along and south of Interstate 80. Another inch to two inches of liquid precipitation is forecast in the Valley through tomorrow night with up to 3 to 4 inches in the foothills below 3000 feet. Although HREF suggests rain rates are likely to remain below debris flow criteria, there is still a chance of isolated periods of heavy rainfall that could fall over the LNU Complex and SCU Complex burn scars. Therefore, the Flash Flood Watch remains in effect through tomorrow afternoon.
Significant mountain snowfall is expected to continue with this next wave of moisture. An additional 3 to 6 feet, locally higher, of snow is forecast from western Plumas County and south. The southern Cascades, Coastal Range, and Shasta County mountains are forecast to receive about another additional foot of snow. The heaviest snow is also expected along and south of Interstate 80. The Blizzard Warning remains in effect for the Northern Sierra for elevations above 3000 feet. The Winter Storm Warning remains in effect for the remainder of the mountains and foothills.
Precipitation will begin to taper off by late tomorrow. Showers are expected to continue through Friday and linger through Saturday, especially for the mountains and foothills. -HEC
EXTENDED DISCUSSION (Sunday THROUGH Wednesday). Yet another storm is still on track for early next week. This is slightly slower than before with some precipitation starting Sunday night and the north then main push of energy sliding south Monday and Tuesday.
Looking at the strength of this system right now is for sure weaker then on going system. ECMWF Extreme Forecast values for QPF and snow much lower. Also NAEFS/ECMWF ensemble anomaly values also much lower. That being said it is nice storm that will bring beneficial moisture to the area again. Winds will be less and snow levels higher in the 3500 and above range.
Bulk of moisture with this next system should be out of the area late Tuesday night with a cool north flow over the area Wednesday which could bring some northerly winds. Rasch
AVIATION. Widespread IFR to LIFR conditions due to low cigs and moderate to heavy rainfall. Gusty southerly winds gusts 20 to 30 knots through 15z Thursday. LIFR conditions over the mountains due to snow.
STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Warning until 2 AM PST Friday for Burney Basin / Eastern Shasta County-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Shasta Lake Area / Northern Shasta County-Western Plumas County/Lassen Park.
Blizzard Warning until 2 AM PST Friday for West Slope Northern Sierra Nevada.
Flash Flood Watch through Thursday afternoon for 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 mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
SFXC1 - San Francisco Bay Reserve, CA | 66 mi | 73 min | SSE 15 | 45°F | 1007 hPa | 42°F | ||
PCOC1 - 9415144 - Port Chicago, CA | 70 mi | 64 min | E 11 G 16 | 46°F | 50°F | 1006 hPa | ||
AAMC1 - 9414750 - Alameda, CA | 92 mi | 64 min | ESE 14 G 18 | 49°F | 50°F | 1005.7 hPa |
Wind History for Port Chicago, CA
(wind in knots) EDIT (on/off)  Help7 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 24hr | SE G21 | SE G20 | SE G20 | SE G21 | S G16 | SE G17 | SE G18 | SE G21 | E G11 | E | E | S G9 | SE | E | W G6 | S G10 | E | E G15 | E G13 | E G16 | E G13 | E G18 | E G11 | E G14 |
1 day ago | W G21 | W | W G20 | W G20 | SW | W G14 | SW | W | SW | S | S G8 | SW G10 | S | S G10 | S | S G13 | S G11 | SW G12 | S G11 | S G13 | S G18 | S G15 | S G18 | SE G22 |
2 days ago | SW | W G20 | W G24 | W G27 | W | W G25 | W G26 | W | W G24 | W G20 | W G23 | W G28 | W G21 | W G16 | W G17 | W | W G16 | W G17 | W G18 | W G17 | W G20 | W | W G23 | W G21 |
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 |
Sacramento Mather Airport, CA | 25 mi | 63 min | E 8 G 16 | 5.00 mi | Rain | 45°F | 43°F | 93% | 1007.4 hPa |
Link to 5 minute data for KMHR
Wind History from MHR (wind in knots)
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 | 7 PM | |
Last 24hr | SE G40 | SE G49 | SE G32 | SE G33 | SE G29 | S G34 | SE G34 | SE G33 | SE G32 | E G16 | E G17 | |||||||||||||
1 day ago | Calm | Calm | Calm | SE | E | SE | SE | SE | S | S G17 | S | S | S G24 | SE | SE G24 | SE G37 | ||||||||
2 days ago | S | SW | SE | S | SW | SW | SW | W | NW | NW G18 | NW | NW | N | E | SE | Calm |
Tide / Current Tables for Sacramento #4, Sacramento River, California
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataSacramento #4
Click for Map
Wed -- 02:15 AM PST -0.07 feet Low Tide
Wed -- 06:44 AM PST Moonset
Wed -- 07:12 AM PST 2.51 feet High Tide
Wed -- 07:15 AM PST Sunrise
Wed -- 01:19 PM PST 1.01 feet Low Tide
Wed -- 04:20 PM PST Moonrise
Wed -- 05:22 PM PST Sunset
Wed -- 05:22 PM PST 3.35 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 02:15 AM PST -0.07 feet Low Tide
Wed -- 06:44 AM PST Moonset
Wed -- 07:12 AM PST 2.51 feet High Tide
Wed -- 07:15 AM PST Sunrise
Wed -- 01:19 PM PST 1.01 feet Low Tide
Wed -- 04:20 PM PST Moonrise
Wed -- 05:22 PM PST Sunset
Wed -- 05:22 PM PST 3.35 feet High Tide
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 |
0.4 | 0.1 | -0.1 | 0.1 | 0.7 | 1.5 | 2.2 | 2.5 | 2.4 | 2.2 | 1.8 | 1.4 | 1.2 | 1 | 1.1 | 1.8 | 2.7 | 3.3 | 3.3 | 3.1 | 2.7 | 2.2 | 1.6 | 1.1 |
Tide / Current Tables for Clarksburg #4, Sacramento River, California
EDIT (on/off)  Help One Week of DataClarksburg #4
Click for Map
Wed -- 12:44 AM PST -0.07 feet Low Tide
Wed -- 06:03 AM PST 2.51 feet High Tide
Wed -- 06:43 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 11:49 AM PST 1.01 feet Low Tide
Wed -- 04:13 PM PST 3.35 feet High Tide
Wed -- 04:21 PM PST Moonrise
Wed -- 05:23 PM PST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:44 AM PST -0.07 feet Low Tide
Wed -- 06:03 AM PST 2.51 feet High Tide
Wed -- 06:43 AM PST Moonset
Wed -- 07:14 AM PST Sunrise
Wed -- 11:49 AM PST 1.01 feet Low Tide
Wed -- 04:13 PM PST 3.35 feet High Tide
Wed -- 04:21 PM PST Moonrise
Wed -- 05:23 PM PST Sunset
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 | -0.1 | 0.3 | 1 | 1.7 | 2.3 | 2.5 | 2.4 | 2.1 | 1.7 | 1.3 | 1.1 | 1 | 1.4 | 2.1 | 2.9 | 3.3 | 3.3 | 3 | 2.6 | 2 | 1.4 | 0.9 | 0.5 |
Weather Map
(on/off)  Help Weather Map
GEOS Local Image of CentralWestCoast EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West Contential US Full GOES-East
Ground Weather Radar Station
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