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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 4:15 AM PDT (11:15 UTC) | Moonrise 1:35PM | Moonset 3:21AM | Illumination 79% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 328 Am Pdt Fri Apr 3 2020
.small craft advisory in effect through late tonight...
Today..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 10 seconds and S around 2 ft at 15 seconds.
Tonight..NW winds 15 to 25 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.
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. Rain likely.
Sun..S winds 20 to 30 kt with gusts up to 35 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..SW 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. A chance of rain.
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 2.3 kt at 01:13 pm Friday and 1.9 kt at 02:25 am Saturday.
.small craft advisory in effect through late tonight...
Today..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 10 seconds and S around 2 ft at 15 seconds.
Tonight..NW winds 15 to 25 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.
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. Rain likely.
Sun..S winds 20 to 30 kt with gusts up to 35 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..SW 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. A chance of rain.
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 2.3 kt at 01:13 pm Friday and 1.9 kt at 02:25 am Saturday.
PZZ500 328 Am Pdt Fri Apr 3 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong northwest winds will generate fresh and steep wind generated waves creating hazardous conditions for smaller vessels. Winds will then subside by early Saturday morning. A cold upper level low from the gulf of alaska will bring wet weather to the coastal waters and bays this weekend and next week. A moderate 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 will generate fresh and steep wind generated waves creating hazardous conditions for smaller vessels. Winds will then subside by early Saturday morning. A cold upper level low from the gulf of alaska will bring wet weather to the coastal waters and bays this weekend and next week. A moderate northwesterly swell will prevail through much of the forecast period.
7 Day Forecast for Marine Location Near Pacifica, CA
Hourly EDIT Helplocation: 37.62, -122.51 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 031019 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 319 AM PDT Fri Apr 3 2020
SYNOPSIS. Sunny and mild weather today with clouds increasing by tonight ahead of the Saturday cold front. Light rain develops in the North Bay Saturday morning spreading across the Bay Area Saturday afternoon and evening. A second system drops down the coast Sunday keeping a steady rain going for much of the day across the region. Precipitation becomes more showery Sunday night into Monday as the upper low drops down the coast. The parent low will cut-off over Southern California keeping temperatures below normal and the chance of showers in the forecast through midweek.
DISCUSSION. as of 3:20 AM PDT Friday . Skies are mostly clear with just some patchy clouds so far in favored locations such as Half Moon Bay and Monterey. Today will be one last quiet weather days with sunshine and highs generally in the 60s. By tonight clouds will be on the increase as the first shortwave drops down from the Gulf of Alaska. Model timing remains consistent and expect rain to develop in the North Bay by around 12z Saturday morning. Light rain slowly spreads southward across the Bay area through lunchtime and the afternoon hours of Saturday with the front losing much of its punch by the time it reaches the Central Coast. Rain amounts by Saturday evening should be up to a half inch in the North Bay with 0.10-0.25 Bay Area southward and little or no rainfall south of Salinas.
There are some subtle but noteworthy changes for the Sunday system. The 00z and 06z NAM keep the core of the upper low and associated cold air farther offshore. The end result will still be a rainy Sunday across the Bay Area as the slow moving boundary impacts the region. The convective parameters dont look nearly as impressive compared to 24 hours ago and snow levels will be much higher through Sunday afternoon with 850 mb temps above zero. Other factor to watch will be the position of the low may induce more unfavorable southeast wind flow versus southwest upslope flow. So some of the exciting meteorological factors are fading on Sunday (t-storms, lowering snow levels, etc) but still expecting a soaking rainfall.
On Sunday night into Monday the coldest air aloft may pass over the region with precip becoming more showery. Forecast will now show t-storm chances on Monday afternoon. Rainfall totals by Monday evening of 0.50-1.00 lower elevations with 1-2 inches for the hills.
ECMWF keeps the low wobbling around Pt Conception right through Weds so lingering showers, especially from the Santa Cruz mtns southward remain in the forecast for Tuesday/Weds with temps running below seasonal norms. The low may finally eject by Thursday/Friday 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 02:22 AM PDT Friday . 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. Tday. SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pt Reyes 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: RWW AVIATION: Canepa MARINE: Canepa
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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 San Francisco, CA
(wind in knots) EDIT (on/off) Help| 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 | 2 AM | 3 AM | 4 AM | |
| Last 24hr | SW | SW | SW | S | N | NE G9 | NE | W G11 | W G12 | W G14 | W G16 | W G14 | W G16 | W G17 | SW G13 | SW G11 | W G13 | W G13 | SW G12 | W G10 | W G12 | W | W | SW G10 |
| 1 day ago | W | SW | W | SW | SW | NW | W G8 | W G15 | W G15 | W G17 | W G18 | W G15 | W G16 | W G13 | W G14 | W G10 | W G9 | SW | SW | S | SE | S | S | SW |
| 2 days ago | W | SW | -- | NW G7 | W G7 | W G8 | W G9 | W G9 | SW G10 | SW G12 | W G13 | W G14 | W G15 | SW G11 | W G17 | W G17 | SW G11 | W G7 | SW G7 | SW | W G11 | W G11 | W G12 | W |
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 |
| San Francisco, San Francisco International Airport, CA | 8 mi | 19 min | W 14 | 10.00 mi | Fair | 50°F | 39°F | 66% | 1018.3 hPa |
| Half Moon Bay Airport, CA | 8 mi | 20 min | NNW 11 G 14 | 9.00 mi | Mostly Cloudy | 48°F | 41°F | 76% | 1019.3 hPa |
| San Carlos Airport, CA | 15 mi | 20 min | N 0 | 10.00 mi | Fair | 46°F | 39°F | 76% | 1019 hPa |
| Oakland, Metro Oakland International Airport, CA | 16 mi | 22 min | N 0 | 10.00 mi | A Few Clouds | 45°F | 39°F | 83% | 1018.5 hPa |
| Hayward, Hayward Air Terminal, CA | 21 mi | 21 min | SW 5 | 10.00 mi | Fair | 50°F | 43°F | 77% | 1019.3 hPa |
Link to 5 minute data for KHAF
Wind History from HAF (wind in knots)
| 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 | 2 AM | 3 AM | 4 AM | |
| Last 24hr | NE | E | N | N | N | N | NW | NW | NW | NW | NW | NW G18 | NW | N | N G19 | NW G20 | NW G20 | N G16 | N G16 | N G18 | N G19 | N G18 | N G18 | |
| 1 day ago | NW G23 | N G19 | NW G23 | N G20 | NW G23 | NW G25 | NW G24 | NW G24 | NW G24 | NW G25 | N G27 | NW G27 | NW G26 | NW G26 | N G28 | N G27 | N G24 | N G23 | N G18 | N G16 | N | Calm | N | |
| 2 days ago | NW | N | N | Calm | N | NW | NW | NW | NW | NW G16 | NW G17 | NW G18 | NW G17 | NW | NW | NW | N | N | N | NW | NW G16 | N G16 | N G21 | N G19 |
Tide / Current Tables for Seaplane Harbor, San Francisco Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataSeaplane Harbor
Click for Map
Fri -- 03:09 AM PDT 2.88 feet Low Tide
Fri -- 04:19 AM PDT Moonset
Fri -- 06:50 AM PDT Sunrise
Fri -- 08:32 AM PDT 6.70 feet High Tide
Fri -- 02:33 PM PDT Moonrise
Fri -- 03:46 PM PDT -0.26 feet Low Tide
Fri -- 07:34 PM PDT Sunset
Fri -- 10:46 PM PDT 6.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 03:09 AM PDT 2.88 feet Low Tide
Fri -- 04:19 AM PDT Moonset
Fri -- 06:50 AM PDT Sunrise
Fri -- 08:32 AM PDT 6.70 feet High Tide
Fri -- 02:33 PM PDT Moonrise
Fri -- 03:46 PM PDT -0.26 feet Low Tide
Fri -- 07:34 PM PDT Sunset
Fri -- 10:46 PM PDT 6.20 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 |
| 4.9 | 4 | 3.2 | 2.9 | 3.1 | 3.8 | 4.9 | 5.9 | 6.6 | 6.6 | 6.1 | 5 | 3.6 | 2 | 0.7 | -0.1 | -0.2 | 0.2 | 1.2 | 2.5 | 3.9 | 5.1 | 6 | 6.2 |
Tide / Current Tables for Sierra Point 1.3 mi ENE, South San Francisco Bay, California Current
EDIT (on/off) Help One Week of DataSierra Point 1.3 mi ENE
Click for Map
Fri -- 12:29 AM PDT -0.58 knots Max Ebb
Fri -- 03:27 AM PDT 0.00 knots Slack
Fri -- 04:19 AM PDT Moonset
Fri -- 06:17 AM PDT 0.61 knots Max Flood
Fri -- 06:50 AM PDT Sunrise
Fri -- 09:05 AM PDT -0.00 knots Slack
Fri -- 12:38 PM PDT -1.25 knots Max Ebb
Fri -- 02:33 PM PDT Moonrise
Fri -- 04:05 PM PDT 0.00 knots Slack
Fri -- 07:23 PM PDT 1.07 knots Max Flood
Fri -- 07:34 PM PDT Sunset
Fri -- 10:44 PM PDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:29 AM PDT -0.58 knots Max Ebb
Fri -- 03:27 AM PDT 0.00 knots Slack
Fri -- 04:19 AM PDT Moonset
Fri -- 06:17 AM PDT 0.61 knots Max Flood
Fri -- 06:50 AM PDT Sunrise
Fri -- 09:05 AM PDT -0.00 knots Slack
Fri -- 12:38 PM PDT -1.25 knots Max Ebb
Fri -- 02:33 PM PDT Moonrise
Fri -- 04:05 PM PDT 0.00 knots Slack
Fri -- 07:23 PM PDT 1.07 knots Max Flood
Fri -- 07:34 PM PDT Sunset
Fri -- 10:44 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 | -0.6 | -0.4 | -0.2 | 0.2 | 0.5 | 0.6 | 0.6 | 0.4 | 0 | -0.4 | -0.9 | -1.2 | -1.2 | -1 | -0.6 | -0.1 | 0.5 | 0.9 | 1.1 | 1 | 0.8 | 0.4 | -0.1 |
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 (7,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, CA
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