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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 6:13AM | Sunset 8:17PM | Monday August 3, 2020 11:34 AM PDT (18:34 UTC) | Moonrise 7:48PM | Moonset 5:03AM | Illumination 100% |  |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 818 Am Pdt Mon Aug 3 2020
.small craft advisory in effect through this evening...
Today..SW winds 10 to 20 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 25 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 30 kt.
Wed..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed night..SW winds 5 to 15 kt with gusts up to 25 kt.
Thu..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri..SW winds 5 to 15 kt.
.small craft advisory in effect through this evening...
Today..SW winds 10 to 20 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 25 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 30 kt.
Wed..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed night..SW winds 5 to 15 kt with gusts up to 25 kt.
Thu..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 818 Am Pdt Mon Aug 3 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwesterly winds will continue through early next week across the coastal waters as high pressure remains over the eastern pacific. The strongest winds will be along the immediate coastline south of point sur and north of point reyes. Breezy onshore winds are also expected in the afternoons and evenings over the bays. These winds will generate steep fresh swell resulting in hazardous seas conditions, especially for smaller vessels.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwesterly winds will continue through early next week across the coastal waters as high pressure remains over the eastern pacific. The strongest winds will be along the immediate coastline south of point sur and north of point reyes. Breezy onshore winds are also expected in the afternoons and evenings over the bays. These winds will generate steep fresh swell resulting in hazardous seas conditions, especially for smaller vessels.
7 Day Forecast for Marine Location Near Pinole, CA
Hourly EDIT Helplocation: 38.04, -122.34 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 031728 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 1028 AM PDT Mon Aug 3 2020
SYNOPSIS. Warm and very dry conditions will persist inland today. Significant cooling will develop for Tuesday and Wednesday as an upper trough deepens over California. Patchy drizzle or light rain is likely near the coast and in the coastal hills, especially on Tuesday night and Wednesday morning, when measurable precipitation is possible. In addition, breezy conditions will develop at times from this afternoon through Wednesday, and locally gusty winds are likely Tuesday afternoon and evening as strong onshore flow develops. Modest warming is forecast late in the week, but temperatures will remain near seasonal averages.
DISCUSSION. As of 10:10 AM PDT Monday . Water vapor imagery shows a trough of low pressure moving inland across Oregon and Washington this morning, causing the dominant Desert Southwest ridge to shift east this morning. Today will be our transition day, between this ridge and trough, with warm conditions continuing to prevail across the region. In fact, temperatures this morning are running 4 to 8 degrees warmer than this time yesterday, given the fact the marine layer did not return this morning. However, with the stronger onshore flow developing this afternoon, believe more places will moderate a bit, with temperatures being similar to those of yesterday. Current forecast reflects these trends well, so no updates are planned at this time. Palmer
PREVIOUS DISCUSSION. As of 3:45 AM PDT Monday . Gusty northwest winds developed over our coastal waters late yesterday, and have continued gusty overnight as the north-to-south surface pressure gradient along the northern California coast from Arcata to SFO increased to more than 5 mb. These gusty winds were sufficient to mix drier air into the boundary layer and clear all coastal low clouds and fog by yesterday evening. Current satellite imagery shows that patchy low clouds have since redeveloped near the coast, but most areas remain clear. Brisk northerly flow has limited the amount of inland transport of marine air overnight and current inland temperatures are running anywhere from 3 to 7 degrees warmer than 24 hours ago.
Water vapor satellite imagery currently shows an upper trough tracking from southwest to northeast across the Pac NW, while a trailing shortwave trough is offshore near 40N/140W. The initial trough tracked too far north to have a significant impact on our weather. An upper ridge centered over the Desert Southwest continues to extend westward across southern California and at the moment the ridge remains our dominant weather feature. Coastal profiler data indicate the marine inversion remains at around 1000 feet at Fort Ord and even lower at Bodega Bay. The continued shallow marine layer, lack of widespread coastal clouds, and inland temps currently running warmer than 24 hours ago all suggest temperatures today will be at least as warm as yesterday, if not warmer. However, the latest local WRF model is forecasting slightly stronger afternoon and evening seabreeze winds. Thus, the most likely outcome is that temperatures today will be near persistence. Expect breezy conditions this afternoon and evening. Wind gusts of between 30 and 40 mph were common late yesterday in the typical windy locations such as near Altamont Pass in the East Bay and through other gaps in the coastal ranges. Expect wind gusts at least that strong once again this afternoon and evening.
The trailing shortwave trough offshore is forecast to gradually deepen near the California coast from tonight through Wednesday. As this process occurs, expect the marine layer to become reestablished (by tonight), and also deepen through Tuesday night. In addition, onshore flow will continue to ramp up through Tuesday evening. What this means is that from tonight through Wednesday or area will experience more widespread night and morning low clouds, breezy to locally gusty winds, and much cooler temperatures, especially inland. High temperatures on Tuesday are forecast to be a few degrees cooler at the coast and up to 10 degrees cooler inland. Another 5 to 8 degrees of cooling is then likely across inland areas on Wednesday. Breezy conditions are expected through Wednesday, but the strongest winds are likely to occur late Tuesday afternoon and evening when local wind gusts up to 50 mph are possible through gaps in the coastal terrain. These gusty winds are not expected to be widespread enough to warrant a Wind Advisory, but will still have an impact. Although temperatures will decrease and relative humidity will increase through midweek, gusty winds over the next few days will still be a concern from a fire weather standpoint, especially before the finer fuels have a chance to moisten up.
The deepening marine layer and strong onshore flow will create ideal conditions for drizzle, or even light rain, near the coast and along west-facing slopes in the coastal ranges. The 00Z NAM appears to be much too aggressive with its QPF, as it forecasts locally more than a half inch of precipitation from late tonight through Wednesday morning across portions of the East Bay Hills and over much of northern Monterey County. The local WRF model seems more reasonable, forecasting locally up to two-tenths of an inch in western San Mateo County and lesser amounts elsewhere. Meanwhile, the lower resolution models such as the GFS and ECMWF forecast only a few hundredths, which isn't surprising. For now have gone with the NBM's QPF forecast, which is a tenth of an inch or less through midday Wednesday. The upshot is that the biggest forecast challenge over the next few days will be determining how much light precipitation will fall and how widespread the drizzle or light rain may be.
Longer range models generally agree that the trough over CA will lift to the northeast later in the week, resulting in a gradual warming trend from Thursday through the weekend. Temperatures are forecast to warm back to near seasonal averages as early as Friday, but more likely by the weekend.
AVIATION. As of 10:28 AM PDT Monday . For 18z tafs. VFR conditions this afternoon and evening as a compressed marine layer remains in place between about 500 and 800 ft AGL. Breezy onshore winds this afternoon around 15 kt with local gusts of 20 to 25 kt. More extensive stratus is anticipated to return overnight as an upper trough deepens over California and the marine layer expands. However, low confidence on the timing and coverage of overnight stratus. Models still suggest a stronger north/south pressure gradient (~4/5mb SFO-ACV) through late tonight that may limit low cloud development inland.
Vicinity of KSFO . VFR through this evening with W/NW winds 10-15 kt increasing to 15-20 kt this afternoon with higher gusts possible into this evening. Low confidence on cloud coverage overnight.
SFO Bridge Approach . Similar to SFO.
Monterey Bay Terminals . VFR conditions through the early evening. Low confidence on timing of overnight stratus development. Expecting at least patchy coverage tonight and tomorrow morning. Locally breezy winds possible this afternoon down the Salinas Valley.
MARINE. as of 08:18 AM PDT Monday . Gusty northwesterly winds will continue through early next week across the coastal waters as high pressure remains over the eastern Pacific. The strongest winds will be along the immediate coastline south of Point Sur and north of Point Reyes. Breezy onshore winds are also expected in the afternoons and evenings over the bays. These winds will generate steep fresh swell resulting in hazardous seas conditions, especially for smaller vessels.
MTR WATCHES/WARNINGS/ADVISORIES. Tday. 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 Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Mry Bay from 11 AM SCA . SF Bay
PUBLIC FORECAST: Palmer / Dykema AVIATION: AS MARINE: AS
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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 Richmond, CA
(wind in knots) EDIT (on/off) Help| 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 | 11 AM | |
| Last 24hr | S G14 | S | S | SE G8 | S G11 | S G13 | S G10 | S G10 | SE G14 | SE G16 | S G15 | S | S G10 | S G10 | S G9 | S | SE G14 | S G11 | S G11 | S G8 | S | S | S | S G11 |
| 1 day ago | S G17 | S G15 | S G10 | S | S | SE | S G8 | S | S G14 | S G11 | SE | SE G17 | S G21 | S G19 | SE G13 | SE G12 | SE G11 | S G13 | S G15 | S | SE | S G15 | S G14 | S G15 |
| 2 days ago | SE | S G14 | SE G8 | S G8 | SE G7 | S G10 | SE | S G10 | SE G7 | SE G7 | SE G14 | SE G17 | SE G14 | SE G12 | SE | SE G12 | S G11 | S G15 | SE G11 | SE G11 | SE G14 | S | S G15 | SE G15 |
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 |
| Napa, Napa County Airport, CA | 12 mi | 41 min | SSW 7 | 10.00 mi | Fair | 75°F | 55°F | 52% | 1015.3 hPa |
| Novato / Gnoss Field, CA | 14 mi | 40 min | N 0 | 9.00 mi | Fair | 84°F | 53°F | 35% | 1016.3 hPa |
| Concord, Buchanan Field, CA | 16 mi | 42 min | W 8 | 10.00 mi | Fair | 84°F | 48°F | 29% | 1014.4 hPa |
| Petaluma Municipal Airport, CA | 21 mi | 40 min | WSW 8 | 3.00 mi | Fair with Haze | 82°F | 51°F | 35% | 1016.3 hPa |
| Oakland, Metro Oakland International Airport, CA | 24 mi | 42 min | SSW 5 | 10.00 mi | A Few Clouds | 70°F | 55°F | 61% | 1017.1 hPa |
Link to 5 minute data for KAPC
Wind History from APC (wind in knots)
| 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 | 11 AM | |
| Last 24hr | W | SW | SW | SW | S | S | S | S | S | S | S | SW | Calm | SW | Calm | S | SW | W | Calm | SW | W | SW | SW | S |
| 1 day ago | SW | S | SW | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | W | NW | NW | N | W | W | SW | SW |
| 2 days ago | S | S | S | S | S | SW | S | SW | SW | SW | SW | SW | W | SW | W | NW | Calm | W | Calm | N | Calm | SW | SW | SW |
Tide / Current Tables for Pinole Point, San Pablo Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPinole Point
Click for Map
Mon -- 12:32 AM PDT 6.83 feet High Tide
Mon -- 06:03 AM PDT Moonset
Mon -- 06:14 AM PDT Sunrise
Mon -- 07:35 AM PDT -0.73 feet Low Tide
Mon -- 08:59 AM PDT Full Moon
Mon -- 02:35 PM PDT 5.30 feet High Tide
Mon -- 07:27 PM PDT 2.50 feet Low Tide
Mon -- 08:16 PM PDT Sunset
Mon -- 08:47 PM PDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:32 AM PDT 6.83 feet High Tide
Mon -- 06:03 AM PDT Moonset
Mon -- 06:14 AM PDT Sunrise
Mon -- 07:35 AM PDT -0.73 feet Low Tide
Mon -- 08:59 AM PDT Full Moon
Mon -- 02:35 PM PDT 5.30 feet High Tide
Mon -- 07:27 PM PDT 2.50 feet Low Tide
Mon -- 08:16 PM PDT Sunset
Mon -- 08:47 PM PDT Moonrise
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 |
| 6.7 | 6.8 | 6.1 | 4.8 | 3.1 | 1.4 | 0.1 | -0.6 | -0.7 | -0.1 | 0.8 | 2.1 | 3.4 | 4.5 | 5.2 | 5.2 | 4.7 | 3.9 | 3 | 2.6 | 2.6 | 3.2 | 4.1 | 5.2 |
Tide / Current Tables for Pinole Point 1.2 mi W, San Pablo Bay, California Current
EDIT (on/off) Help One Week of DataPinole Point 1.2 mi W
Click for Map
Mon -- 01:10 AM PDT -0.00 knots Slack
Mon -- 05:12 AM PDT -1.25 knots Max Ebb
Mon -- 06:03 AM PDT Moonset
Mon -- 06:14 AM PDT Sunrise
Mon -- 08:51 AM PDT 0.00 knots Slack
Mon -- 08:59 AM PDT Full Moon
Mon -- 11:39 AM PDT 0.85 knots Max Flood
Mon -- 03:29 PM PDT -0.00 knots Slack
Mon -- 05:42 PM PDT -0.52 knots Max Ebb
Mon -- 07:47 PM PDT 0.00 knots Slack
Mon -- 08:16 PM PDT Sunset
Mon -- 08:47 PM PDT Moonrise
Mon -- 10:07 PM PDT 0.85 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:10 AM PDT -0.00 knots Slack
Mon -- 05:12 AM PDT -1.25 knots Max Ebb
Mon -- 06:03 AM PDT Moonset
Mon -- 06:14 AM PDT Sunrise
Mon -- 08:51 AM PDT 0.00 knots Slack
Mon -- 08:59 AM PDT Full Moon
Mon -- 11:39 AM PDT 0.85 knots Max Flood
Mon -- 03:29 PM PDT -0.00 knots Slack
Mon -- 05:42 PM PDT -0.52 knots Max Ebb
Mon -- 07:47 PM PDT 0.00 knots Slack
Mon -- 08:16 PM PDT Sunset
Mon -- 08:47 PM PDT Moonrise
Mon -- 10:07 PM PDT 0.85 knots Max Flood
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 | 0.1 | -0.4 | -0.9 | -1.1 | -1.2 | -1.2 | -0.9 | -0.4 | 0.1 | 0.5 | 0.8 | 0.8 | 0.7 | 0.5 | 0.1 | -0.2 | -0.5 | -0.5 | -0.3 | 0.1 | 0.6 | 0.8 | 0.8 |
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 (14,3,4,5)
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Ground Weather Radar Station Sacramento, CA
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