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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 6:51AM | Sunset 5:56PM | Friday February 21, 2020 6:31 AM PST (14:31 UTC) | Moonrise 6:06AM | Moonset 4:13PM | Illumination 5% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 231 Am Pst Fri Feb 21 2020
.small craft advisory in effect from Saturday morning through Saturday afternoon...
Today..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds and sw around 2 ft at 15 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds and sw around 2 ft at 14 seconds.
Sat..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. W swell 5 to 7 ft at 13 seconds.
Sat night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. NW swell 7 to 9 ft at 16 seconds.
Sun..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 7 to 9 ft at 16 seconds.
Sun night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 15 seconds.
Mon..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 3 to 5 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 2 to 4 ft with a dominant period of 14 seconds. Across the bar...seas 3 to 5 ft with a dominant period of 14 seconds. Maximum ebb current of 2.0 kt at 02:49 am Friday and 2.6 kt at 03:07 pm Friday.
.small craft advisory in effect from Saturday morning through Saturday afternoon...
Today..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds and sw around 2 ft at 15 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds and sw around 2 ft at 14 seconds.
Sat..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. W swell 5 to 7 ft at 13 seconds.
Sat night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. NW swell 7 to 9 ft at 16 seconds.
Sun..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 7 to 9 ft at 16 seconds.
Sun night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 15 seconds.
Mon..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 3 to 5 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 2 to 4 ft with a dominant period of 14 seconds. Across the bar...seas 3 to 5 ft with a dominant period of 14 seconds. Maximum ebb current of 2.0 kt at 02:49 am Friday and 2.6 kt at 03:07 pm Friday.
PZZ500 231 Am Pst Fri Feb 21 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... An upper level low located 500 miles southwest of the Monterey peninsula will move to near point conception by early Saturday morning then quickly move eastward over the weekend. The low will bring a chance of showers over the southern coastal waters late tonight and Saturday. A strong high pressure system will build over the eastern pacific late in the weekend and next week. Northwest winds will increase over the northern waters by early tonight and increase to the south on Saturday. Expect moderate period northwest swell through early next week. A long period northwest swell is likely mid next week.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... An upper level low located 500 miles southwest of the Monterey peninsula will move to near point conception by early Saturday morning then quickly move eastward over the weekend. The low will bring a chance of showers over the southern coastal waters late tonight and Saturday. A strong high pressure system will build over the eastern pacific late in the weekend and next week. Northwest winds will increase over the northern waters by early tonight and increase to the south on Saturday. Expect moderate period northwest swell through early next week. A long period northwest swell is likely mid next week.
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 211258 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 458 AM PST Fri Feb 21 2020
SYNOPSIS. Warmer temperatures and dry conditions Friday. A slight chance exists for light precipitation for the Central Coast late Friday into Saturday morning with minimal accumulations. High pressure builds over the weekend bringing a warming trend next week and keeping dry conditions in place around the Bay Area.
DISCUSSION. as of 02:57 AM PST Friday . High clouds continue move over the Bay Area and the Central Coast, as a low pressure system over the Eastern Pacific moves eastward. The high clouds are keeping temperatures on the warmer side with forecasted values in the 40s, and isolated areas touching the upper 30s. San Francisco itself should be around 50 degrees. Cloud cover will increase as the system draws closer to Southern California.
Dry and mild conditions will prevail on Friday for San Francisco and points north of San Jose. The Central Coast however has a slight chance to see some light precipitation Friday evening and into Saturday morning as the low pressure system moves eastward. Rain is possible, but most areas will only see a trace amount, with higher elevations in Southern Monterey County most likely to see precip. Accumulations are forecast to be less than a tenth of an inch, with isolated amounts slightly higher at those same elevated locations.
Winds are expected to be breezy as the low approaches the coastline and shift to the southeast as the low continues inland. Behind the low, an upper level ridge will build and return the wind flow to onshore on Saturday. Temperatures will remain mild with dry conditions around the region. These dry conditions will remain through next week as the ridge grows, but a warming trend is forecast late in the week as high pressure intensifies.
With the exception of those that will see light rain with the passing system Friday night, it looks more and more likely that February will see little to no rain for the area. In the realm of wishcasting, the GFS has started showing signs of a longer wave trough moving through in early March. The ECMWF has a similar trough approaching. But of course, the models are different and therefore so are their depictions of what may happen. The Euro is a couple days earlier passing over the Bay Area, while the GFS is slightly later and a bit more to the south. That being said, it is still well over 200 hours out and hardly anything more than a desperate attempt to sound optimistic.
AVIATION. as of 4:58 AM PST Friday . A band of echoes in advance of an upper low well to the southwest of the Monterey Peninsula is showing up on KMUX radar as close as the southern inner waters and southern Monterey County this morning; steepening 700 mb to 500 mb temperature lapse rates through 18z today will accompany these echoes per NAM forecasts, similar lapse rates to where a batch of lightning occurred much closer to the low center well to our southwest earlier this morning. That instability however was next to a dry air intrusion behind the low and closer to the coldest pool of mid level air. Models have struggled with forecasting qpf with this low, difficulty primarily with the potential for mid level convection, but also trying to model the broader scale dynamic lift and consequently if/where it will precipitate. The low has got caught up in and reinvigorated by the subtropical jet stream. 12z TAFs continue VFR then cloud ceilings lowering, lowest to the south, as well as include isolated showers, and a period of rain reaching the north Central Coast. Radar and satellite will be monitored, TAFs amended as needed.
Vicinity of KSFO . VFR. Mid to high level cloud cover today and tonight, generally trending lower with time. Will monitor radar and satellite and see how far north any precipitation may get with this system.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . VFR. Mid level clouds lowering, a few rain showers are possible this morning with a band of echoes moving up from the south. Model forecasts do not indicate any precipitation this morning, but do show better chances later today into tonight.
MARINE. as of 2:57 AM PST Friday . An upper level low located 500 miles southwest of the Monterey Peninsula will move to near Point Conception by early Saturday morning then quickly move eastward over the weekend. The low will bring a chance of showers over the southern coastal waters late tonight and Saturday. A strong high pressure system will build over the eastern Pacific late in the weekend and next week. Northwest winds will increase over the northern waters by early tonight and increase to the south on Saturday. Expect moderate period northwest swell through early next week. A long period northwest swell is likely mid next week.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. NONE.
PUBLIC FORECAST: DK AVIATION/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 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 | 37 min | N 0 | 6.00 mi | Fog/Mist | 43°F | 42°F | 100% | 1019.6 hPa |
| Petaluma Municipal Airport, CA | 20 mi | 37 min | N 0 | 10.00 mi | Fair | 43°F | 42°F | 100% | 1019.6 hPa |
Link to 5 minute data for KDVO
Wind History from DVO (wind in knots)
| 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 | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | Calm | Calm | SE | Calm | SE | SE | G10 | SE | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | |
| 1 day ago | Calm | Calm | Calm | Calm | S | E | SE | SE | NW | N | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | S | N | ||
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | Calm | N | N | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
Tide / Current Tables for Bolinas Lagoon, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBolinas Lagoon
Click for Map
Fri -- 04:26 AM PST 1.61 feet Low Tide
Fri -- 06:05 AM PST Moonrise
Fri -- 06:53 AM PST Sunrise
Fri -- 09:36 AM PST 4.28 feet High Tide
Fri -- 04:13 PM PST Moonset
Fri -- 05:08 PM PST -0.23 feet Low Tide
Fri -- 05:55 PM PST Sunset
Fri -- 11:26 PM PST 3.58 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 04:26 AM PST 1.61 feet Low Tide
Fri -- 06:05 AM PST Moonrise
Fri -- 06:53 AM PST Sunrise
Fri -- 09:36 AM PST 4.28 feet High Tide
Fri -- 04:13 PM PST Moonset
Fri -- 05:08 PM PST -0.23 feet Low Tide
Fri -- 05:55 PM PST Sunset
Fri -- 11:26 PM PST 3.58 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 |
| 3.3 | 2.9 | 2.3 | 1.9 | 1.6 | 1.7 | 2.1 | 2.9 | 3.6 | 4.2 | 4.3 | 3.9 | 3.2 | 2.3 | 1.4 | 0.5 | -0 | -0.2 | -0.1 | 0.5 | 1.3 | 2.2 | 3.1 | 3.5 |
Tide / Current Tables for Point Reyes, California Current
EDIT (on/off) Help One Week of DataPoint Reyes
Click for Map
Fri -- 01:45 AM PST -0.67 knots Max Ebb
Fri -- 04:43 AM PST 0.00 knots Slack
Fri -- 06:07 AM PST Moonrise
Fri -- 06:55 AM PST Sunrise
Fri -- 07:37 AM PST 0.84 knots Max Flood
Fri -- 10:19 AM PST -0.00 knots Slack
Fri -- 01:39 PM PST -1.38 knots Max Ebb
Fri -- 04:14 PM PST Moonset
Fri -- 05:31 PM PST 0.00 knots Slack
Fri -- 05:56 PM PST Sunset
Fri -- 08:40 PM PST 1.14 knots Max Flood
Fri -- 11:44 PM PST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:45 AM PST -0.67 knots Max Ebb
Fri -- 04:43 AM PST 0.00 knots Slack
Fri -- 06:07 AM PST Moonrise
Fri -- 06:55 AM PST Sunrise
Fri -- 07:37 AM PST 0.84 knots Max Flood
Fri -- 10:19 AM PST -0.00 knots Slack
Fri -- 01:39 PM PST -1.38 knots Max Ebb
Fri -- 04:14 PM PST Moonset
Fri -- 05:31 PM PST 0.00 knots Slack
Fri -- 05:56 PM PST Sunset
Fri -- 08:40 PM PST 1.14 knots Max Flood
Fri -- 11:44 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 |
| -0.4 | -0.6 | -0.7 | -0.6 | -0.3 | 0.1 | 0.5 | 0.8 | 0.8 | 0.6 | 0.2 | -0.4 | -1 | -1.3 | -1.4 | -1.2 | -0.9 | -0.3 | 0.3 | 0.8 | 1.1 | 1.1 | 0.9 | 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 (9,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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