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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 6:54AM | Sunset 7:33PM | Tuesday March 31, 2020 10:29 AM PDT (17:29 UTC) | Moonrise 10:30AM | Moonset 12:41AM | Illumination 51% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 843 Am Pdt Tue Mar 31 2020
.small craft advisory in effect from 3 pm pdt this afternoon through late Wednesday night...
Today..NW winds 10 to 20 kt. Wind waves 1 to 2 ft, increasing to 3 to 4 ft this afternoon. NW swell 4 to 6 ft at 10 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 5 to 7 ft at 13 seconds.
Wed..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 4 to 6 ft at 12 seconds and sw around 2 ft at 19 seconds.
Wed night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 4 to 6 ft at 12 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 3 to 5 ft at 11 seconds and sw around 2 ft at 18 seconds.
Thu night..NW winds 20 to 25 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. Mixed swell nw 3 to 4 ft at 10 seconds and S around 2 ft at 16 seconds.
Fri..NW winds 5 to 15 kt. Wind waves 4 to 5 ft. NW swell 3 to 4 ft and sw around 2 ft. A chance of showers.
Sat..W winds 5 to 10 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft and S around 2 ft. A chance of showers.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 5 ft with a dominant period of 11 seconds. Across the bar...seas 5 to 7 ft with a dominant period of 11 seconds. Maximum ebb current of 2.6 kt at 09:19 am Tuesday and 0.7 kt at 11:43 pm Tuesday.
.small craft advisory in effect from 3 pm pdt this afternoon through late Wednesday night...
Today..NW winds 10 to 20 kt. Wind waves 1 to 2 ft, increasing to 3 to 4 ft this afternoon. NW swell 4 to 6 ft at 10 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 5 to 7 ft at 13 seconds.
Wed..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 4 to 6 ft at 12 seconds and sw around 2 ft at 19 seconds.
Wed night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 4 to 6 ft at 12 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 3 to 5 ft at 11 seconds and sw around 2 ft at 18 seconds.
Thu night..NW winds 20 to 25 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. Mixed swell nw 3 to 4 ft at 10 seconds and S around 2 ft at 16 seconds.
Fri..NW winds 5 to 15 kt. Wind waves 4 to 5 ft. NW swell 3 to 4 ft and sw around 2 ft. A chance of showers.
Sat..W winds 5 to 10 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft and S around 2 ft. A chance of showers.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 5 ft with a dominant period of 11 seconds. Across the bar...seas 5 to 7 ft with a dominant period of 11 seconds. Maximum ebb current of 2.6 kt at 09:19 am Tuesday and 0.7 kt at 11:43 pm Tuesday.
PZZ500 843 Am Pdt Tue Mar 31 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will increase this afternoon through Wednesday night as a low pressure system moves inland over the pacific northwest. The waters off the big sur coast will likely see some gale-force winds and/or gusts. Additionally, can't rule out some isolated gale-force gusts for the outer waters north of point pinos. Mixed swell will persist with a moderate northwest swell and a light southwesterly swell.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will increase this afternoon through Wednesday night as a low pressure system moves inland over the pacific northwest. The waters off the big sur coast will likely see some gale-force winds and/or gusts. Additionally, can't rule out some isolated gale-force gusts for the outer waters north of point pinos. Mixed swell will persist with a moderate northwest swell and a light southwesterly swell.
7 Day Forecast for Marine Location Near El Granada, CA
Hourly EDIT Helplocation: 37.5, -122.48 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 311628 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area Issued by National Weather Service Los Angeles/Oxnard CA 928 AM PDT Tue Mar 31 2020
SYNOPSIS. Dry weather conditions with seasonable temperatures are forecast for the remainder of the week. Rain chances and cooler temperatures return by the upcoming weekend and will potentially continue into early next week.
DISCUSSION. as of 09:15 AM PDT Tuesday . A cloudy start to the day for the North Bay along with possibly a few light showers should give way to at least partly sunny conditions by the afternoon. Farther south plenty of sunshine and warmer temps than yesterday.
PREV DISCUSSION. as of 02:58 AM PDT Tuesday . An upper level low off of the British Columbia coast and associated trough extending into the Pacific Northwest continues to produce widespread cloud cover and isolated showers over northern California. With this, cannot rule out so very light precipitation over far northern portions of the North Bay today, mainly across northern Sonoma County. Elsewhere, dry weather conditions are likely today under a partly to mostly sunny sky. Temperatures will generally warm into the upper 50s along the immediate cost while 60s are likely inland.
Dry weather conditions are likely to persist through the remainder of the week as the storm track stays to the north. Additionally, temperatures will remain near to slightly below seasonal averages in response to a broad trough over the much of the western portion of the country. Overnight/morning temperatures will coo slightly by midweek as a slightly drier air mass filters into the region. This may allow for some inland valley locations to drop into the middle 30s by early Thursday and Friday mornings.
Surface high pressure will build over the eastern Pacific resulting in gusty northwest winds over the Pacific and near the coast from late today through Wednesday evening. However, wind speeds inland will generally remain light.
Deterministic models and ensembles continue to indicate the return to unsettled weather conditions by late this week (generally late Friday) and into the upcoming weekend. However, there remain some differences in model-to-model solutions with respect to timing and position of the mid/upper level trough. Regardless, look for a cooling trend and increased precipitation chances region-wide as we head into the upcoming weekend. Conditions potentially remain unsettled heading into early next week as well.
AVIATION. as of 04:20 AM PDT Tuesday . Infrared satellite imagery shows low clouds developing and expanding in coverage this early morning over the San Francisco Bay Area. The major Bay Area terminals were all reporting MVFR ceilings as of the 12Z TAF publication time. Expect these clouds to mix-out around mid/late morning and return to VFR conditions. Light winds this morning will increase and become onshore in the afternoon.
Vicinity of KSFO . MVFR ceilings as a result of low clouds through 18-19Z, then transition back to VFR. Light winds this morning will become west to northwest this afternoon around 15 kt.
SFO Bridge Approach . Expect the low clouds to expand in coverage over the southern half of the San Francisco Bay along the approach over the next few hours through sunrise. Otherwise, expect similar conditions to that of the terminal.
Monterey Bay Terminals . MVFR conditions were observed earlier in the overnight hours associated with low clouds, but have since returned to VFR conditions. Could still see some low clouds develop between now and sunrise at MRY and SNS. Light winds this morning will become west to northwest this afternoon.
MARINE. as of 09:15 AM PDT Tuesday . Northwest winds will increase this afternoon through Wednesday night as a low pressure system moves inland over the Pacific Northwest. The waters off the Big Sur coast will likely see some gale-force winds and/or gusts. Additionally, can't rule out some isolated gale-force gusts for the outer waters north of Point Pinos. Mixed swell will persist with a moderate northwest swell and a light southwesterly swell.
MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm from 3 PM SCA . Pt Reyes to Pigeon Pt 0-10 nm from 3 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm from 3 PM SCA . Pt Arena to Pigeon Pt 10-60 nm from 3 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm from 3 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Mry Bay from 3 PM
PUBLIC FORECAST: MW/RGass AVIATION: Rowe MARINE: Rowe
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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 Redwood City, CA
(wind in knots) EDIT (on/off) Help| 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 | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | W | E G6 | NE | NE G9 | NE G10 | N | NW G18 | W G13 | W G14 | W G14 | NW | W | W | W | SW | SW | SW | SW | S G4 | S | SW | SW | SW | W |
| 1 day ago | SE G7 | E G6 | SE G5 | NE | N G6 | NW | W | W | W | W | W | W | W | NW | NW | W | W | SW | SW | W | W | SW | W | SE |
| 2 days ago | SE | E | SE | NE | NE | E G6 | E | E | SE | W | -- | S | S | S | S | E | E G5 | SE | SE | SE | SE G6 | SE G8 | SE | E |
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 |
| Half Moon Bay Airport, CA | 1 mi | 35 min | NNW 8 | 10.00 mi | Mostly Cloudy | 54°F | 50°F | 88% | 1024.4 hPa |
| San Francisco, San Francisco International Airport, CA | 10 mi | 34 min | W 3 | 9.00 mi | Mostly Cloudy | 55°F | 50°F | 83% | 1024.1 hPa |
| San Carlos Airport, CA | 12 mi | 1.7 hrs | WNW 4 | 10.00 mi | Overcast | 54°F | 50°F | 88% | 1025.1 hPa |
| Palo Alto Airport, CA | 19 mi | 43 min | NW 6 | 10.00 mi | Mostly Cloudy | 55°F | 48°F | 77% | 1024.7 hPa |
| Oakland, Metro Oakland International Airport, CA | 20 mi | 37 min | SW 4 | 10.00 mi | Overcast | 57°F | 50°F | 78% | 1024.6 hPa |
| Hayward, Hayward Air Terminal, CA | 22 mi | 36 min | N 0 | 10.00 mi | Overcast | 55°F | 48°F | 80% | 1025.2 hPa |
Link to 5 minute data for KSFO
Wind History from SFO (wind in knots)
| 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 | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | NE | NE | E | NE | W | W | W | W | W | W | W | SW | W | W | SW | SW | Calm | NW | W | NW | Calm | S | Calm | W |
| 1 day ago | E | E | NE | NE | NW | Calm | W | W | W | W | W | W | W | W | SW | W | W | SW | SW | Calm | Calm | SW | SE | E |
| 2 days ago | E | E | E | E | NE | S | SW | SW | SW | SW | SW | SE | S | SE | S | SE | SE | SE | SE | S | SE | S | SE | SE |
Tide / Current Tables for Princeton, Half Moon Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
EDIT (on/off) Help One Week of DataSan Mateo Bridge
Click for Map
Tue -- 12:26 AM PDT 0.00 knots Slack
Tue -- 01:41 AM PDT Moonset
Tue -- 03:28 AM PDT 0.67 knots Max Flood
Tue -- 06:14 AM PDT -0.00 knots Slack
Tue -- 06:54 AM PDT Sunrise
Tue -- 10:24 AM PDT -1.35 knots Max Ebb
Tue -- 11:28 AM PDT Moonrise
Tue -- 02:02 PM PDT 0.00 knots Slack
Tue -- 04:56 PM PDT 1.14 knots Max Flood
Tue -- 07:31 PM PDT Sunset
Tue -- 08:54 PM PDT -0.00 knots Slack
Tue -- 11:10 PM PDT -0.53 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:26 AM PDT 0.00 knots Slack
Tue -- 01:41 AM PDT Moonset
Tue -- 03:28 AM PDT 0.67 knots Max Flood
Tue -- 06:14 AM PDT -0.00 knots Slack
Tue -- 06:54 AM PDT Sunrise
Tue -- 10:24 AM PDT -1.35 knots Max Ebb
Tue -- 11:28 AM PDT Moonrise
Tue -- 02:02 PM PDT 0.00 knots Slack
Tue -- 04:56 PM PDT 1.14 knots Max Flood
Tue -- 07:31 PM PDT Sunset
Tue -- 08:54 PM PDT -0.00 knots Slack
Tue -- 11:10 PM PDT -0.53 knots Max Ebb
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 |
| -0.1 | 0.1 | 0.4 | 0.6 | 0.6 | 0.4 | 0.1 | -0.3 | -0.6 | -1.1 | -1.3 | -1.3 | -0.9 | -0.5 | -0 | 0.6 | 1 | 1.1 | 1 | 0.8 | 0.5 | -0 | -0.4 | -0.5 |
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 (13,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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