Thursday, September23, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Roseland, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:58AMSunset 7:07PM Thursday September 23, 2021 10:02 AM PDT (17:02 UTC) Moonrise 7:44PMMoonset 8:33AM Illumination 95% Phase: Waning Gibbous; Moon at 17 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 249 Am Pdt Thu Sep 23 2021
Today..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 13 seconds and S around 2 ft at 12 seconds.
Tonight..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 12 seconds.
Fri..SW winds 5 to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 12 seconds.
Fri night..SW winds around 5 kt. Wind waves 1 ft. NW swell 3 to 5 ft at 11 seconds.
Sat..S winds 5 to 10 kt. Wind waves 1 ft. NW swell 2 to 4 ft at 10 seconds.
Sat night..W winds around 5 kt. Wind waves 1 ft. W swell 3 to 5 ft at 16 seconds.
Sun..NW winds 5 to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft.
Mon..W winds 5 to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft.
PZZ500 249 Am Pdt Thu Sep 23 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Expect gusty northwest winds over the northern outer waters to decrease by late Thursday morning. Northwest winds over all coastal zones will be light Friday into the weekend. A longer period northwest swell mixing in with the weaker southerly swell. The next chance for new longer period swell is Sunday.


7 Day Forecast for Marine Location Near Roseland, CA
   Hourly   EDIT   Help
location: 38.43, -122.71     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 231158 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 458 AM PDT Thu Sep 23 2021

SYNOPSIS. Warming and drying trend Thursday as offshore flow continues to develops across the region. Marine layer will persist through the morning hours along the coast. Onshore winds return Friday afternoon and will bring slight cooling. A seasonable weather pattern this weekend with a shallow marine layer along the coast while clear and warm weather continues inland. Will be watching for a frontal passage by Tuesday that should bring cooler temperatures and perhaps some showers to the North Bay.

DISCUSSION. as of 02:57 AM PDT Thursday . .Short Term. Today and Tonight . Satellite shows a stratus deck snuggled up along the length of our coast line this morning. Patchy low clouds are sitting over most of the coastal valleys. The marine layer is around 1000ft, however patchy fog has been seen around the typical stratus hot spots tonight. The Fort Ord profiler shows off shore winds starting to organize around the 2000 to 3500ft range. A few observations in Napa county's higher peaks are seeing gusts from 20 to 35 mph. There is still a strong marine layer below 1000ft, as the Santa Rosa and Monterey Bay airports are seeing persistent patchy fog.

Off shore winds will gradually build and continue through the short term. Models have been consistent with keeping pressure gradients lower for these winds, which will in turn keep speeds lighter too. Maximum winds gusts at the highest peaks in Napa county could occasionally reach to 35 to 40 mph around noon today. This window for moderate gusts is smaller, with winds slowly diminishing after later this afternoon.

With the off shore winds, temperatures will warm back up today. Most areas along the coast should see temperatures around normal or 5 degrees above. Areas inland will see temperatures 5 to 15 degrees above normal, with warmest temperatures in the East Bay hills. There is high confidence in temperatures remaining below any product thresholds today.

The weaker off shore winds will battle with the stratus over the ocean this afternoon. The winds should have enough compressional heating to warm the air over the ocean and mix out the cloud cover. However, there is model agreement in the stratus building back Friday morning with a quasi-southerly surge.

.Long Term. Friday through Thursday . With lighter off shore winds forecasted, onshore winds should have little resistance when trying to reestablish themselves over the area Friday afternoon. The SNS-PRB gradient starts to reach negative values Friday morning, which could indicate a southerly surge. As cloud cover moves back over the waters, cooler air will be advected onto land when the winds switch back to onshore. Temperatures reflect this with cooling down a few degrees from Thursday. More cooling is on its way this weekend and into early next week.

With weak upper level high pressure over the area this weekend, temperatures will be mild and winds will remain onshore.

As we move into fall, more upper level troughs will begin to swing down to the central CA coast. Our next potential system looks to approach Nor Cal Monday morning. Models have slowly been trending down the moisture forecasted to accompany this system. GFS and ECM 06Z run show trace amounts of QPF over the North Bay and northern waters, with no QPF reaching south. There is a better chances of seeing some breezy to windy conditions as the front passes through. Another upper level trough is right behind this one, and will swing through at the end of the period. This one also looks dry, however with the back to back upper level troughs we could see some windy conditions. Especially as these systems advect colder and colder air.

AVIATION. as of 11:16 PM PDT Wednesday . For the 12z TAFs. Stratus and fog /LIFR-IFR/ impacting most of the terminals this morning and expected to scatter out between 16-18Z as onshore flow persists near the coast.

Vicinity of KSFO . VFR persists for both KSFO and KOAK, however, satellite shows that KOAK is near the edge of stratus and could have a period of /LIFR-IFR/ conditions between now and 16Z. Light onshore winds continue, but should increase Thursday afternoon into evening with sustained winds of 10-15kts.

KSFO Bridge Approach . Low clouds along the eastern side of the bay which may impact the approach. This should burn off around 16-17Z.

Monterey Bay . LIFR at KMRY and KSNS and KWVI. Terminals should start lifting to VFR around 17-18Z. Light onshore flow today around 10 kts or less.

MARINE. as of 04:43 AM PDT Thursday . Expect gusty northwest winds over the northern outer waters to decrease by late Thursday morning. Northwest winds over all coastal zones will be light Friday into the weekend. A longer period northwest swell mixing in with the weaker southerly swell. The next chance for new longer period swell is Sunday.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. None.

PUBLIC FORECAST: Dhuyvetter AVIATION: Bingaman MARINE: Bingaman

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 21 mi56 min 60°F
PRYC1 - 9415020 - Point Reyes, CA 33 mi62 min 61°F1015.5 hPa (+0.6)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 35 mi62 min WSW 5.1 G 8.9 58°F 1014.7 hPa (+0.6)
SFXC1 - San Francisco Bay Reserve, CA 40 mi77 min Calm 62°F 1015 hPa56°F
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi62 min WNW 12 G 14 58°F 67°F1014.7 hPa (+0.5)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi62 min SSW 2.9 G 4.1 58°F 1015.4 hPa (+0.6)
PCOC1 - 9415144 - Port Chicago, CA 44 mi62 min WSW 7 G 9.9 62°F 68°F1014.5 hPa (+0.5)
46237 - San Francisco Bar, CA (142) 45 mi62 min 54°F 61°F5 ft
FTPC1 - 9414290 - San Francisco, CA 45 mi62 min WNW 2.9 G 5.1 56°F 65°F1014.9 hPa (+0.4)
PXSC1 46 mi62 min 59°F 59°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi32 min Calm G 3.9 59°F1015.4 hPa
OBXC1 47 mi62 min 58°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi62 min Calm G 1.9 57°F 1015 hPa (+0.5)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 47 mi62 min E 2.9 G 5.1 58°F 1014 hPa (+0.6)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi62 min SW 1.9 G 2.9
LNDC1 49 mi62 min SSW 1 G 1.9 59°F 1014.9 hPa (+0.6)

Wind 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.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA8 mi69 minN 00.50 miFog52°F52°F100%1014.6 hPa
Petaluma Municipal Airport, CA13 mi67 minNW 30.25 miFog54°F54°F100%1015.6 hPa
Novato / Gnoss Field, CA21 mi67 minN 610.00 miPartly Cloudy55°F54°F94%1015.2 hPa

Link to 5 minute data for KSTS

Wind History from STS (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 24hrCalm45S6S9S10S8S11SE8SE6SE4SE3S3S3CalmSW3SW3NW4NW3CalmCalm4CalmCalm
1 day agoCalm4S76SE8S8SW7SW4S6SE6SE5S5SE5SE4W3W3W3CalmW3CalmCalmCalm3Calm
2 days ago3S4S5S5SW6W11SW8S5S6SE4S3CalmCalmNW3W4W3CalmCalmNW3NW5W3CalmCalmCalm

Tide / Current Tables for Upper drawbridge, Petaluma River, San Pablo Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Upper drawbridge
Click for Map
Thu -- 03:50 AM PDT     6.02 feet High Tide
Thu -- 06:59 AM PDT     Sunrise
Thu -- 09:32 AM PDT     Moonset
Thu -- 10:28 AM PDT     1.13 feet Low Tide
Thu -- 03:54 PM PDT     6.49 feet High Tide
Thu -- 07:05 PM PDT     Sunset
Thu -- 08:43 PM PDT     Moonrise
Thu -- 11:04 PM PDT     0.69 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
1.93.24.65.765.74.93.82.61.71.21.32.13.556.16.56.25.44.22.91.810.7

Tide / Current Tables for Lakeville, Petaluma River, San Pablo Bay, California
   EDIT      (on/off)   Help   One Week of Data
Lakeville
Click for Map
Thu -- 03:39 AM PDT     5.76 feet High Tide
Thu -- 06:59 AM PDT     Sunrise
Thu -- 09:32 AM PDT     Moonset
Thu -- 10:08 AM PDT     1.13 feet Low Tide
Thu -- 03:43 PM PDT     6.21 feet High Tide
Thu -- 07:04 PM PDT     Sunset
Thu -- 08:43 PM PDT     Moonrise
Thu -- 10:44 PM PDT     0.69 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
2.23.54.75.65.75.34.43.32.31.51.11.42.43.85.166.25.84.93.72.51.40.80.7

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.