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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 5:57AM | Sunset 8:32PM | Monday July 13, 2020 6:48 AM PDT (13:48 UTC) | Moonrise 12:07AM | Moonset 1:09PM | Illumination 43% |  |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 330 Am Pdt Mon Jul 13 2020
.small craft advisory in effect from 9 am pdt this morning through this evening...
.small craft advisory in effect from Tuesday morning through Tuesday evening...
Today..SW winds 15 to 25 kt with gusts up to 30 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue night..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed..SW winds 15 to 25 kt with gusts up to 30 kt.
Wed night..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..SW winds 5 to 15 kt with gusts up to 25 kt.
Fri..SW winds 5 to 15 kt.
.small craft advisory in effect from 9 am pdt this morning through this evening...
.small craft advisory in effect from Tuesday morning through Tuesday evening...
Today..SW winds 15 to 25 kt with gusts up to 30 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue night..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed..SW winds 15 to 25 kt with gusts up to 30 kt.
Wed night..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..SW winds 5 to 15 kt with gusts up to 25 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 330 Am Pdt Mon Jul 13 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds continuing mainly over the northern and outer coastal waters today into Tuesday. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. By midweek, a nearly stationary low pressure trough will develop over the coastal waters and cause winds to shift to a southerly direction mainly over the southern and inner coastal waters. A longer period south swell will mix with the steep fresh northwest swell.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds continuing mainly over the northern and outer coastal waters today into Tuesday. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. By midweek, a nearly stationary low pressure trough will develop over the coastal waters and cause winds to shift to a southerly direction mainly over the southern and inner coastal waters. A longer period south swell will mix with the steep fresh northwest swell.
7 Day Forecast for Marine Location Near Redwood City, CA
Hourly EDIT Helplocation: 37.52, -122.2 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 131153 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 453 AM PDT Mon Jul 13 2020
SYNOPSIS. Interior areas are forecast to cool through midweek as onshore flow increases and high pressure weakens. Temperatures will then likely remain near seasonal averages for the remainder of the week and into next weekend. Expect increasing night and morning low clouds through midweek.
DISCUSSION. as of 02:49 AM PDT Monday . More widespread stratus has developed over the Pacific and shifted southward from the San Francisco Peninsula down along the Big Sur Coast. While conditions to the north along the coast have cleared, do expect the boundary layer to continue to moisten as onshore flow increases through the remainder of the night. However, inland stratus intrusion will likely be limited to the Monterey Bay region and/or through the Golden Gate into Oakland.
Look for onshore flow to spread further inland today in response to weakening high pressure over the Desert Southwest and troughing over the Pacific Northwest. This will result in a cooling trend of around 5 to 12 degrees across the interior while only slight cooling is likely near the coast. As surface winds ease and turn southerly Tuesday into Wednesday, additional cooling is likely in places such as Big Sur, Santa Cruz and into the North Bay coastal valleys. Additionally, the marine layer will likely become better defined by midweek allowing for more widespread overnight and morning low clouds.
Another trough is forecast to develop along the West Coast late in the week which will help to keep temperatures near seasonal averages. While it is difficult to forecast the exact depth of the marine layer late in the week, do expect the typical ebb and flow of low clouds into the coastal valleys each night/morning. Slight warming of the interior looks possible by next weekend as onshore flow diminishes slightly.
AVIATION. as of 4:53 AM PDT Monday . for 12z TAFs. Much more ideal conditions for fog and stratus /VLIFR-IFR/ have developed overnight at the coast, bays and in the nearby coastal valleys while inland it's VFR. Patchy morning light drizzle has developed on the coast. Constant NW wind over the coastal waters has caused a fair amount of upwelling lowering sea surface temperatures to 50 F to 55 F, atypically chilly by 2 to 4 degrees for mid July. The marine layer has deepened slightly to 1,000 feet and onshore winds will usher in additional fog and stratus through daybreak. Diurnal warming and mixing will scatter out the fog and stratus from late morning to afternoon. VLIFR-IFR will roll back inland on onshore breezes tonight and Tuesday morning.
Vicinity of KSFO . Improving chances for IFR developing 12z to 17z today as the marine layer has deepened a little overnight and the onshore breeze has strengthened as well. Otherwise by late morning VFR is forecast. IFR ceiling likely returning tonight and Tuesday morning.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . VLIFR-IFR, patchy light drizzle until just after daybreak. Low to moderate confidence stratus mixes out to VFR by late morning, conditions are much more ideal than recent nights and mornings. An early return of IFR is likely for the evening, conditions VLIFR-IFR tonight and Tuesday morning possibly patchy light drizzle developing as well.
MARINE. as of 3:57 AM PDT Monday . Gusty northwest winds continuing mainly over the northern and outer coastal waters today into Tuesday. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. By midweek, a nearly stationary low pressure trough will develop over the coastal waters and cause winds to shift to a southerly direction mainly over the southern and inner coastal waters. A longer period south swell will mix with the steep fresh northwest swell.
MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Reyes to Pigeon Pt 0-10 nm until 6 AM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 6 AM SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . SF Bay from 9 AM
PUBLIC FORECAST: RGass 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 Redwood City, CA
(wind in knots) EDIT (on/off) Help| 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 | 5 AM | |
| Last 24hr | NW | NW | -- | NW | N | N G5 | N | N G9 | N G11 | N G17 | W G15 | W | W | W G14 | W | W | W | W | NW | N | S | W | W | W |
| 1 day ago | SW | W | NW | NW | N G6 | N G8 | N | NW G10 | NW G14 | NW | N | NW | NW | NW | W | NW G12 | NW | NW | NW | NW | NW | NW | NW | NW |
| 2 days ago | NW | NW | NW | N | NW G11 | N | NW | NW | NW | NW | NW G14 | NW | NW | NW | NW | N G9 | NW | NW | NW | NW | NW | NW | NW | 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 Carlos Airport, CA | 3 mi | 53 min | W 8 | 10.00 mi | Fair | 59°F | 51°F | 77% | 1011.8 hPa |
| Mountain View, Moffett Field, CA | 10 mi | 53 min | NNE 3 | 10.00 mi | 59°F | 55°F | 88% | 1011.5 hPa | |
| Hayward, Hayward Air Terminal, CA | 11 mi | 54 min | W 7 | 10.00 mi | Fair | 59°F | 52°F | 78% | 1012.2 hPa |
| San Francisco, San Francisco International Airport, CA | 11 mi | 52 min | WNW 10 | 10.00 mi | A Few Clouds | 55°F | 51°F | 87% | 1011.3 hPa |
| Oakland, Metro Oakland International Airport, CA | 12 mi | 55 min | WSW 8 | 7.00 mi | Mostly Cloudy | 61°F | 53°F | 75% | 1011.4 hPa |
| Half Moon Bay Airport, CA | 16 mi | 48 min | WSW 3 | 5.00 mi | Fog/Mist | 55°F | 51°F | 88% | 1012.9 hPa |
| San Jose, San Jose International Airport, CA | 18 mi | 55 min | NNW 5 | 10.00 mi | Fair | 61°F | 55°F | 81% | 1011.3 hPa |
| Livermore, Livermore Municipal Airport, CA | 24 mi | 55 min | NW 10 | 10.00 mi | Fair | 59°F | 54°F | 83% | 1009.9 hPa |
Link to 5 minute data for KSQL
Wind History from SQL (wind in knots)
| 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 | 5 AM | 6 AM | 7 AM | |
| Last 24hr | NW | Calm | Calm | N | N | NW | N | W | W | SW | W | W | W | W | W | W | Calm | SE | NW | Calm | W | W | ||
| 1 day ago | NW | Calm | N | NW | N | N | N | W G16 | W | W | W | NW | N | Calm | NW | NW | NW | NW | Calm | Calm | NW | |||
| 2 days ago | Calm | Calm | N | N | N | NW | NW | W | W | NW | W | W | N | N | N | N | N | NW | NW | NW | Calm | Calm | Calm |
Tide / Current Tables for Redwood Creek entrance (inside), San Francisco Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataRedwood Creek entrance (inside)
Click for Map
Mon -- 01:06 AM PDT Moonrise
Mon -- 02:38 AM PDT 2.04 feet Low Tide
Mon -- 05:58 AM PDT Sunrise
Mon -- 07:43 AM PDT 5.73 feet High Tide
Mon -- 01:48 PM PDT 1.88 feet Low Tide
Mon -- 02:08 PM PDT Moonset
Mon -- 08:08 PM PDT 7.49 feet High Tide
Mon -- 08:30 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:06 AM PDT Moonrise
Mon -- 02:38 AM PDT 2.04 feet Low Tide
Mon -- 05:58 AM PDT Sunrise
Mon -- 07:43 AM PDT 5.73 feet High Tide
Mon -- 01:48 PM PDT 1.88 feet Low Tide
Mon -- 02:08 PM PDT Moonset
Mon -- 08:08 PM PDT 7.49 feet High Tide
Mon -- 08:30 PM PDT Sunset
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 |
| 3.5 | 2.6 | 2.1 | 2.1 | 2.7 | 3.7 | 4.8 | 5.6 | 5.7 | 5.4 | 4.6 | 3.7 | 2.7 | 2.1 | 1.9 | 2.3 | 3.3 | 4.6 | 6 | 7 | 7.5 | 7.3 | 6.6 | 5.5 |
Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
EDIT (on/off) Help One Week of DataDumbarton Bridge
Click for Map
Mon -- 01:06 AM PDT Moonrise
Mon -- 02:32 AM PDT 0.00 knots Slack
Mon -- 05:30 AM PDT 0.92 knots Max Flood
Mon -- 05:58 AM PDT Sunrise
Mon -- 09:20 AM PDT -0.00 knots Slack
Mon -- 11:16 AM PDT -0.50 knots Max Ebb
Mon -- 02:03 PM PDT 0.00 knots Slack
Mon -- 02:08 PM PDT Moonset
Mon -- 05:38 PM PDT 1.14 knots Max Flood
Mon -- 08:29 PM PDT Sunset
Mon -- 09:29 PM PDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:06 AM PDT Moonrise
Mon -- 02:32 AM PDT 0.00 knots Slack
Mon -- 05:30 AM PDT 0.92 knots Max Flood
Mon -- 05:58 AM PDT Sunrise
Mon -- 09:20 AM PDT -0.00 knots Slack
Mon -- 11:16 AM PDT -0.50 knots Max Ebb
Mon -- 02:03 PM PDT 0.00 knots Slack
Mon -- 02:08 PM PDT Moonset
Mon -- 05:38 PM PDT 1.14 knots Max Flood
Mon -- 08:29 PM PDT Sunset
Mon -- 09:29 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 |
| -0.7 | -0.5 | -0.2 | 0.2 | 0.7 | 0.9 | 0.9 | 0.8 | 0.5 | 0.1 | -0.3 | -0.5 | -0.4 | -0.3 | -0 | 0.3 | 0.8 | 1.1 | 1.1 | 1 | 0.7 | 0.3 | -0.3 | -0.7 |
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
Wind Forecast for San Francisco/Monterey Bay Area, CA (9,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, CA
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