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Marine Weather and Tides
Version 3.4 |
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 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 7:15AM | Sunset 5:13PM | Sunday January 17, 2021 1:29 AM PST (09:29 UTC) | Moonrise 10:22AM | Moonset 10:03PM | Illumination 16% | ![]() |
PZZ531 San Francisco Bay South Of The Bay Bridge- 829 Pm Pst Sat Jan 16 2021
Tonight..NW winds up to 10 kt.
Sun..NW winds up to 10 kt.
Sun night..W winds up to 10 kt.
Martin luther king jr day..N winds 15 to 25 kt with gusts up to 35 kt.
Mon night..N winds 20 to 30 kt with gusts up to 45 kt.
Tue..N winds 30 to 40 kt with gusts up to 50 kt.
Tue night..NE winds 5 to 15 kt.
Wed..N winds around 5 kt.
Thu..NW winds 5 to 10 kt.
Tonight..NW winds up to 10 kt.
Sun..NW winds up to 10 kt.
Sun night..W winds up to 10 kt.
Martin luther king jr day..N winds 15 to 25 kt with gusts up to 35 kt.
Mon night..N winds 20 to 30 kt with gusts up to 45 kt.
Tue..N winds 30 to 40 kt with gusts up to 50 kt.
Tue night..NE winds 5 to 15 kt.
Wed..N winds around 5 kt.
Thu..NW winds 5 to 10 kt.
PZZ500 829 Pm Pst Sat Jan 16 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Increasing northwest winds through the night. As seas and breezy winds combine for hazardous seas conditions, particularly for smaller vessels. Winds will shift more northerly tomorrow to tomorrow night and increase as offshore winds pick up over land. These stronger winds will then continue into early next week with gale force conditions likely. The next large, long period northwest swell will arrive Sunday.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Increasing northwest winds through the night. As seas and breezy winds combine for hazardous seas conditions, particularly for smaller vessels. Winds will shift more northerly tomorrow to tomorrow night and increase as offshore winds pick up over land. These stronger winds will then continue into early next week with gale force conditions likely. The next large, long period northwest swell will arrive Sunday.
7 Day Forecast for Marine Location Near Salida, CA
Hourly EDIT Help
location: 37.7, -121.04 debug
Area Discussion for - Sacramento, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFXUS66 KSTO 162218 AFDSTO
Area Forecast Discussion National Weather Service Sacramento CA 218 PM PST Sat Jan 16 2021
SYNOPSIS. Continued above normal temperatures and dry conditions are forecast to prevail this weekend. Strong winds possible early next week. Chance for mountain showers by next weekend.
DISCUSSION. High pressure continues to dominate the forecast today leaving most of northern California with clear skies and above normal temperatures. Valley sites currently span the mid 60s to the mid 70s, with the warmest temperatures being observed in the northern Sacramento Valley and Delta region. Sacramento Executive Airport (SAC), Downtown Sacramento (DTS), and Stockton (SCK) have a decent shot at tying or breaking their records. SAC and SCK's records are 69 degrees and DTS's record is 71, all of which were set in 2014. The Sacramento sites have 68% chance of exceeding 71 degrees. Modesto will struggle a bit to break their record, 69 degrees in 2014, but there is a 65% chance of tying it. Farther north, in Redding and Red Bluff's areas, their records are 80 degrees set back in 2014, which will be tougher to tie or break.
Tonight, guidance suggests the chance for some patchy fog in the from the Sacramento area down into the northern San Joaquin Valley. Otherwise, expect partly to mostly clear skies with overnight low temperatures forecast to be roughly 5 to 15 degrees above normal. Tomorrow, the ridge will continue to hold, thus we're expecting similar weather and high temperatures. Late Sunday into Monday, we'll see start to see major pattern change unfold. Ensemble and model guidance show a predominately moisture- starved shortwave quickly digging south from the Pacific Northwest and then traveling down the California coast. Models and ensembles then favor the trough digging to southern California about 12 hours later; with a secondary system sliding down the CA/NV border. Offshore surface pressure gradients will develop with this synoptic setup, resulting in periods of strong, potentially damaging north to east winds. The High Wind Watch remains in effect from Sunday night and continues through the day on Tuesday. Valley sustained winds of 25 to 35 mph with gusts 40 to 50 mph are possible, particularly along the west-side and in the Delta region. Even stronger winds are possible in the Sierra with gusts of 50 to 65 mph, local gusts of 75+ mph in the exposed peaks and ridgetops. High resolution models just starting to capture the onset of this wind event, and will keep a close eye as these models better- capture the duration of the event. Stay tuned for additional details. // Rowe/KR
EXTENDED DISCUSSION (Wednesday THROUGH Saturday).
Forecast remains on track for the extended period. Ensemble guidance, including the 500mb cluster data, agrees with the EPAC ridge nosing into northern California on Wednesday. This will cause the trough to dig farther south, leading to lighter winds and mild high temperatures through Thursday. Friday into Saturday, ensemble guidance favors a trough digging into the region and brings more seasonal weather to the region. It may also bring light precipitation to the mountains and foothills, with the southern Cascades and Sierra being favored. NBM guidance highlights these areas well, thus kept it in for PoP guidance.
AVIATION.
VFR conditions remain thru this evening before areas of BR/FG form between 07-09Z south of KMYV. Surface winds are generally below 12 knots for the next 24 hours.
STO WATCHES/WARNINGS/ADVISORIES. High Wind Watch from late Sunday night through Tuesday evening 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-Shasta Lake Area / Northern Shasta County-Southern Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.
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 |
PCOC1 - 9415144 - Port Chicago, CA | 58 mi | 60 min | S 4.1 G 5.1 | 55°F | 52°F | 1019.9 hPa | ||
SFXC1 - San Francisco Bay Reserve, CA | 63 mi | 105 min | Calm | 48°F | 1020 hPa | 47°F | ||
RTYC1 - 9414523 - Redwood City, CA | 64 mi | 60 min | SSW 1 G 1.9 | 51°F | 56°F | 1020.7 hPa |
Wind History for Port Chicago, CA
(wind in knots) EDIT (on/off)  Help1 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 | 12 AM | |
Last 24hr | SW G8 | SW | SW | S | S | SW G9 | S G9 | SW G8 | S G7 | S | N | N | E | NE | NE | W | -- | W | SW | SW G7 | S | SW | SW | SW |
1 day ago | NE | S | S | E | NE | E | N | SE | S | N | NE | N | NW | N | NE | E | E | SE | NW | SE | S | NE | NW | SW |
2 days ago | -- | W | SW | NE | NW | NE | E | E | E | E | NE | E | NW | SW | S | SW G5 | S | E | E | NW |
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 |
Modesto City-County Airport - Harry Sham Field, CA | 7 mi | 37 min | ESE 3 | 2.50 mi | Fog/Mist | 46°F | 44°F | 93% | 1019.6 hPa |
Stockton, Stockton Metropolitan Airport, CA | 18 mi | 35 min | N 0 | 2.50 mi | Fog/Mist | 50°F | 46°F | 86% | 1019.6 hPa |
Link to 5 minute data for KMOD
Wind History from MOD (wind in knots)
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 | 12 AM | 1 AM | |
Last 24hr | NW | N | Calm | Calm | Calm | E | E | E | E | E | E | SE | Calm | E | E | E | E | Calm | E | Calm | Calm | E | E | E |
1 day ago | Calm | Calm | SE | SE | Calm | Calm | SE | SE | E | NW | NW | N | W | W | NW | NW | NW | NW | NW | W | NW | NW | NW | |
2 days ago | NW | W | NW | E | Calm | NE | NE | E | Calm | Calm | Calm | NE | Calm | W | NW | Calm | Calm | Calm | Calm | Calm | Calm | E | E | E |
Tide / Current Tables for Grant Line Canal (drawbridge), Old River, California
EDIT Weekend mode (on/off) (on/off)  Help One Week of DataGrant Line Canal (drawbridge)
Click for Map
Sun -- 05:23 AM PST -0.09 feet Low Tide
Sun -- 07:19 AM PST Sunrise
Sun -- 10:23 AM PST Moonrise
Sun -- 11:53 AM PST 3.36 feet High Tide
Sun -- 05:13 PM PST Sunset
Sun -- 05:35 PM PST 1.17 feet Low Tide
Sun -- 10:04 PM PST Moonset
Sun -- 10:46 PM PST 3.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 05:23 AM PST -0.09 feet Low Tide
Sun -- 07:19 AM PST Sunrise
Sun -- 10:23 AM PST Moonrise
Sun -- 11:53 AM PST 3.36 feet High Tide
Sun -- 05:13 PM PST Sunset
Sun -- 05:35 PM PST 1.17 feet Low Tide
Sun -- 10:04 PM PST Moonset
Sun -- 10:46 PM PST 3.28 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 |
3 | 2.2 | 1.4 | 0.7 | 0.2 | -0.1 | -0 | 0.5 | 1.2 | 2 | 2.7 | 3.2 | 3.4 | 3.1 | 2.6 | 2 | 1.5 | 1.2 | 1.2 | 1.5 | 2.2 | 2.8 | 3.2 | 3.3 |
Tide / Current Tables for Brandt Bridge, San Joaquin River, California Current
EDIT (on/off)  Help One Week of DataBrandt Bridge
Click for Map
Sun -- 02:11 AM PST -1.18 knots Max Ebb
Sun -- 06:17 AM PST 0.00 knots Slack
Sun -- 07:18 AM PST Sunrise
Sun -- 09:16 AM PST 0.63 knots Max Flood
Sun -- 10:23 AM PST Moonrise
Sun -- 12:07 PM PST -0.00 knots Slack
Sun -- 03:18 PM PST -0.60 knots Max Ebb
Sun -- 05:12 PM PST Sunset
Sun -- 06:10 PM PST 0.00 knots Slack
Sun -- 08:30 PM PST 0.51 knots Max Flood
Sun -- 10:04 PM PST Moonset
Sun -- 10:57 PM PST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 02:11 AM PST -1.18 knots Max Ebb
Sun -- 06:17 AM PST 0.00 knots Slack
Sun -- 07:18 AM PST Sunrise
Sun -- 09:16 AM PST 0.63 knots Max Flood
Sun -- 10:23 AM PST Moonrise
Sun -- 12:07 PM PST -0.00 knots Slack
Sun -- 03:18 PM PST -0.60 knots Max Ebb
Sun -- 05:12 PM PST Sunset
Sun -- 06:10 PM PST 0.00 knots Slack
Sun -- 08:30 PM PST 0.51 knots Max Flood
Sun -- 10:04 PM PST Moonset
Sun -- 10:57 PM PST -0.00 knots Slack
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 |
-0.8 | -1.1 | -1.2 | -1.1 | -0.9 | -0.6 | -0.1 | 0.3 | 0.5 | 0.6 | 0.6 | 0.4 | 0 | -0.3 | -0.5 | -0.6 | -0.6 | -0.4 | -0.1 | 0.3 | 0.5 | 0.5 | 0.3 | -0 |
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
Ground Weather Radar Station
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