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Marine Weather and Tides
Version 3.4 |
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 6:49AM | Sunset 7:36PM | Friday April 3, 2020 2:38 AM PDT (09:38 UTC) | Moonrise 1:35PM | Moonset 3:22AM | Illumination 78% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 831 Pm Pdt Thu Apr 2 2020
.small craft advisory in effect through late Friday night...
Tonight..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 8 to 9 ft. Mixed swell nw around 3 ft at 10 seconds and S around 2 ft at 16 seconds.
Fri..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. Mixed swell nw around 3 ft at 11 seconds and S around 2 ft at 16 seconds.
Fri night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. Mixed swell nw around 3 ft at 10 seconds and sw around 2 ft at 15 seconds.
Sat..SW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw around 3 ft at 10 seconds and S around 2 ft at 15 seconds. Rain likely.
Sat night..SW winds 10 to 15 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 14 seconds. A chance of rain.
Sun..SW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 13 seconds. Rain.
Sun night..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 5 ft at 9 seconds and S around 2 ft at 13 seconds. Showers likely.
Mon..W winds up to 10 kt. Wind waves 1 ft. W swell 4 to 6 ft and S around 2 ft. A chance of rain.
Tue..NW winds up to 10 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft and S 2 to 3 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 7 to 9 ft with a dominant period of 9 seconds. Across the bar...seas 7 to 9 ft with a dominant period of 9 seconds. Maximum ebb current of 1.4 kt at 01:37 am Friday and 2.3 kt at 01:13 pm Friday.
.small craft advisory in effect through late Friday night...
Tonight..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 8 to 9 ft. Mixed swell nw around 3 ft at 10 seconds and S around 2 ft at 16 seconds.
Fri..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. Mixed swell nw around 3 ft at 11 seconds and S around 2 ft at 16 seconds.
Fri night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. Mixed swell nw around 3 ft at 10 seconds and sw around 2 ft at 15 seconds.
Sat..SW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw around 3 ft at 10 seconds and S around 2 ft at 15 seconds. Rain likely.
Sat night..SW winds 10 to 15 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 14 seconds. A chance of rain.
Sun..SW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 13 seconds. Rain.
Sun night..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 5 ft at 9 seconds and S around 2 ft at 13 seconds. Showers likely.
Mon..W winds up to 10 kt. Wind waves 1 ft. W swell 4 to 6 ft and S around 2 ft. A chance of rain.
Tue..NW winds up to 10 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft and S 2 to 3 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 7 to 9 ft with a dominant period of 9 seconds. Across the bar...seas 7 to 9 ft with a dominant period of 9 seconds. Maximum ebb current of 1.4 kt at 01:37 am Friday and 2.3 kt at 01:13 pm Friday.
PZZ500 831 Pm Pdt Thu Apr 2 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong northwest winds over the waters with occasional gale force gusts possible through tonight and into Friday. Fresh and steep wind generated waves can be produced, creating hazardous conditions for smaller vessels. Winds will start to subside late Friday and into the weekend. A moderate, predominately winds driven, northwesterly swell will prevail through much of the forecast period.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong northwest winds over the waters with occasional gale force gusts possible through tonight and into Friday. Fresh and steep wind generated waves can be produced, creating hazardous conditions for smaller vessels. Winds will start to subside late Friday and into the weekend. A moderate, predominately winds driven, northwesterly swell will prevail through much of the forecast period.
7 Day Forecast for Marine Location Near Lagunitas-Forest Knolls CDP, CA
Hourly EDIT Helplocation: 37.98, -122.74 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 030537 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 1037 PM PDT Thu Apr 2 2020
SYNOPSIS. Dry weather conditions with slightly below normal temperatures through tomorrow. A pair of storm systems arrive this weekend. The first system on Saturday will be mainly focused over the North Bay/Shoreline with breezy winds. The second stronger system arrives Sunday and will bring widespread rain, gusty southerly winds, isolated thunderstorms, cooler temperatures, and lingering showers through potentially much of next week.
DISCUSSION. as of 08:56 PM PDT Thursday . Another pleasant early April afternoon around the Bay Area. Despite the wall to wall sunshine temperatures came up a few short for where they should be this time of year. Highs this afternoon topped out mainly in the upper 50s and 60s with a handful lower 70s.
Skies will remain clear again tonight as a ridge of high pressure off the coast builds over the region. Compare to last night the winds will also be weaker, especially in the hills. However, enough mixing will remain which will keep overnight lows from really bottoming out. Additionally, dew points overnight are also forecast to be a tad higher. Current forecast for tonight has lows dropping into mid 30s to 40s. Similar to last night protected valley locations may locally drop to near freezing. Therefore, patchy frost will be possible again. No update is needed to the forecast.
Friday will be another nice day around the Bay Area with mostly sunny skies early with increasing clouds late in the day. The biggest impact weatherwise the next few days will be the unsettled weather returning this weekend.
For more details on the weekend see below.
PREV DISCUSSION. as of 03:00 PM PDT Thursday .
For the weekend, a pair of storm systems will arrive and bring unsettled weather throughout the weekend and into early next week. The first of these systems will be the weaker of the two, featuring a more tightly bound 542dm 500mb upper low skirting across extreme NW California. The frontal boundary ahead of the parent upper low will first bring rain (0.25-0.50") to the North Bay throughout the morning, before shifting focus to the SF Bay Area around midday Saturday (0.10-0.30"), and eventually weakening before shifting farther southward towards the Central Coast by the evening (0.05-0.20"). Moderate southerly winds will precede and accompany the surface cold front on the order of 10-20mph sustained with gusts 15-25mph.
Then, lingering isolated showers will persist overnight before the arrival of the next storm system early Sunday, a broader, more organized 530-535dm 500mb upper low. This second storm system is anticipated to bring approximately 2 to 3 times as much precipitation as the first storm system (0.50-1.00" regionwide for urban areas, 1.50-2.50" for coastal ranges), with gusty southerly winds (15-25mph sustained, gusts up 25-40mph), and a cooler, more unstable air mass arriving with it. The post frontal instability will allow for the deeper development of convection and with that, the possibility of hail and even thunderstorms. Snow levels will also drop down to as low as 3000-3500 ft in the post frontal environment into Sunday night, allowing for a dusting of snow amongst the highest peaks across the forecast region (and much more over the Sierra -- check out NWS Sacramento or NWS Reno for the Tahoe forecast). Latest model runs suggest the upper low will slow down as shifts southward into Southern California, extending the possibilities of linger/wrap around showers throughout much of next week.
AVIATION. as of 10:36 PM PDT Thursday . For 06Z TAFs. VFR across the Bay Area and the Central Coast. Skies are mostly clear with a slight chance for a few clouds between 1,500 and 2,0000 developing. Winds are onshore and currently are still breezy. The winds will ease slightly overnight before strengthening on Friday; though staying onshore. There is a chance for some stronger gusts in the afternoon ahead of the next weather system over the ocean moving towards the region (arriving Saturday). Sky conditions are forecast to remain VFR.
Vicinity of KSFO . Northwesterly winds remain breezy breezy, but will subside slightly overnight as skies remain clear. Upslope flow along the coast makes KHAF MVFR, so there is a slight chance for FEW to SCT cigs overnight but there is low confidence it moves over the terminal. VFR conditions are forecast for Friday. Winds will remain onshore and strengthen providing stronger gusts in the afternoon.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . Winds continue to taper off, but remain breezy. Possible FEW to SCT cigs show up briefly overnight around 1,500 to 2,000 feet, similar to last night, but there is low confidence as skies are forecast to be mostly clear. VFR on Friday as winds strengthen in the afternoon with stronger gusts possible.
MARINE. as of 8:31 PM PDT Thursday . Strong northwest winds over the waters with occasional gale force gusts possible through tonight and into Friday. Fresh and steep wind generated waves can be produced, creating hazardous conditions for smaller vessels. Winds will start to subside late Friday and into the weekend. A moderate, predominately winds driven, northwesterly swell will prevail through much of the forecast period.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Mry Bay until 3 AM
PUBLIC FORECAST: MM/DRP AVIATION: DK MARINE: DK
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Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Point Reyes, CA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 |
| Novato / Gnoss Field, CA | 15 mi | 44 min | N 0 | 10.00 mi | Fair | 43°F | 39°F | 87% | 1019 hPa |
| Petaluma Municipal Airport, CA | 20 mi | 44 min | Var 6 | 10.00 mi | Fair | 41°F | 41°F | 100% | 1019.3 hPa |
Link to 5 minute data for KDVO
Wind History from DVO (wind in knots)
| 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 PM | 1 AM | 2 AM | |
| Last 24hr | NW | G11 | Calm | Calm | Calm | N G12 | N | N | N | NW | NW | NW | W G20 | W | W G23 | G12 | S | S G13 | Calm | Calm | SE | |||
| 1 day ago | SW | SW | Calm | N | NW | NW | NW G18 | G14 | W G14 | W G15 | W G16 | W | W | W | W G15 | NW | NW G13 | NW | NW G20 | NW G16 | NW G14 | Calm | ||
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | W | G14 | NW G16 | G13 | NW G15 | SW | SW G21 | N | N | Calm | Calm | NW | NW | W | SW G13 |
Tide / Current Tables for Bolinas Lagoon, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBolinas Lagoon
Click for Map
Fri -- 02:43 AM PDT 1.75 feet Low Tide
Fri -- 04:21 AM PDT Moonset
Fri -- 06:51 AM PDT Sunrise
Fri -- 07:39 AM PDT 3.71 feet High Tide
Fri -- 02:34 PM PDT Moonrise
Fri -- 03:20 PM PDT -0.16 feet Low Tide
Fri -- 07:36 PM PDT Sunset
Fri -- 09:53 PM PDT 3.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:43 AM PDT 1.75 feet Low Tide
Fri -- 04:21 AM PDT Moonset
Fri -- 06:51 AM PDT Sunrise
Fri -- 07:39 AM PDT 3.71 feet High Tide
Fri -- 02:34 PM PDT Moonrise
Fri -- 03:20 PM PDT -0.16 feet Low Tide
Fri -- 07:36 PM PDT Sunset
Fri -- 09:53 PM PDT 3.36 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 |
| 2.4 | 2.1 | 1.8 | 1.8 | 2 | 2.6 | 3.2 | 3.6 | 3.7 | 3.5 | 3 | 2.2 | 1.4 | 0.7 | 0.1 | -0.1 | -0.1 | 0.4 | 1.1 | 1.9 | 2.6 | 3.2 | 3.4 | 3.2 |
Tide / Current Tables for Point Reyes, California Current
EDIT (on/off) Help One Week of DataPoint Reyes
Click for Map
Fri -- 03:17 AM PDT 0.00 knots Slack
Fri -- 04:23 AM PDT Moonset
Fri -- 05:57 AM PDT 0.61 knots Max Flood
Fri -- 06:53 AM PDT Sunrise
Fri -- 08:40 AM PDT -0.00 knots Slack
Fri -- 11:57 AM PDT -1.25 knots Max Ebb
Fri -- 02:35 PM PDT Moonrise
Fri -- 03:55 PM PDT 0.00 knots Slack
Fri -- 07:03 PM PDT 1.07 knots Max Flood
Fri -- 07:37 PM PDT Sunset
Fri -- 10:19 PM PDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 03:17 AM PDT 0.00 knots Slack
Fri -- 04:23 AM PDT Moonset
Fri -- 05:57 AM PDT 0.61 knots Max Flood
Fri -- 06:53 AM PDT Sunrise
Fri -- 08:40 AM PDT -0.00 knots Slack
Fri -- 11:57 AM PDT -1.25 knots Max Ebb
Fri -- 02:35 PM PDT Moonrise
Fri -- 03:55 PM PDT 0.00 knots Slack
Fri -- 07:03 PM PDT 1.07 knots Max Flood
Fri -- 07:37 PM PDT Sunset
Fri -- 10:19 PM PDT -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 |
| -0.6 | -0.5 | -0.3 | -0.1 | 0.2 | 0.5 | 0.6 | 0.5 | 0.3 | -0.2 | -0.7 | -1.1 | -1.3 | -1.1 | -0.8 | -0.5 | 0 | 0.6 | 0.9 | 1.1 | 1 | 0.7 | 0.2 | -0.4 |
Weather Map
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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 San Francisco/Monterey Bay Area, CA (5,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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