Page Links Change Location One Page Printer Page HELP AIS Default setup SAVE setting RECALL saved setting

Marine Weather and Tides Pleasanton, CA Version 3.4

NOTICE 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 6:48AM

Sunset 7:32PM

Thursday April 2, 2020 8:11 PM PDT (03:11 UTC)

Moonrise 12:23PM

Moonset 2:29AM

Illumination 76%

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.

---

---

7 Day Forecast for Marine Location Near Pleasanton, CA

   Hourly   EDIT   Help

---

Area Discussion for - San Francisco/Monterey Bay Area, CA

      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 022348 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 448 PM PDT Thu Apr 2 2020

SYNOPSIS. Dry weather conditions with slightly below normal temperatures today and tomorrow. A pair of storm systems arrive this weekend. The first system on Saturday will be mainly focused over the North Bay/Shoreline with breezy winds. The second stronger system arrives Sunday and will bring widespread rain, gusty southerly winds, isolated thunderstorms, cooler temperatures, and lingering showers through potentially much of next week.

DISCUSSION. as of 03:00 PM PDT Thursday . Satellite imagery shows clear skies from the North Bay through Big Sur early this afternoon with only a few clouds lingering around 75 miles offshore. High pressure is present offshore today and will gradually build ashore and begin to weaken through the next 36 hours. Afternoon highs are generally ranging in the low to mid 60s, which is near to slightly below normal for this time of the year. This comes after a chilly start to the day with widespread 30s to 40s and isolated patches of frost in the inland valleys. For tonight, expect similar but marginally warmer overnight lows by a degree or two. That said, patchy frost will be possible into the predawn and sunrise hours once again tomorrow morning, due particularly to a decrease in mixing winds forecast near the surface tonight. Tomorrow will be similar to today except with slightly cooler temperatures and increasing high level cloud cover arriving from the northwest ahead of the next storm system.

For the weekend, a pair of storm systems will arrive and bring unsettled weather throughout the weekend and into early next week. The first of these systems will be the weaker of the two, featuring a more tightly bound 542dm 500mb upper low skirting across extreme NW California. The frontal boundary ahead of the parent upper low will first bring rain (0.25-0.50") to the North Bay throughout the morning, before shifting focus to the SF Bay Area around midday Saturday (0.10-0.30"), and eventually weakening before shifting farther southward towards the Central Coast by the evening (0.05-0.20"). Moderate southerly winds will precede and accompany the surface cold front on the order of 10-20mph sustained with gusts 15-25mph.

Then, lingering isolated showers will persist overnight before the arrival of the next storm system early Sunday, a broader, more organized 530-535dm 500mb upper low. This second storm system is anticipated to bring approximately 2 to 3 times as much precipitation as the first storm system (0.50-1.00" regionwide for urban areas, 1.50-2.50" for coastal ranges), with gusty southerly winds (15-25mph sustained, gusts up 25-40mph), and a cooler, more unstable air mass arriving with it. The post frontal instability will allow for the deeper development of convection and with that, the possibility of hail and even thunderstorms. Snow levels will also drop down to as low as 3000-3500 ft in the post frontal environment into Sunday night, allowing for a dusting of snow amongst the highest peaks across the forecast region (and much more over the Sierra -- check out NWS Sacramento or NWS Reno for the Tahoe forecast). Latest model runs suggest the upper low will slow down as shifts southward into Southern California, extending the possibilities of linger/wrap around showers throughout much of next week.

AVIATION. as of 4:46 PM PDT Thursday . For 00Z TAFs. VFR as clear skies surround the region. Winds remain onshore and breezy, with isolated occasional stronger gusts. Winds will ease slightly overnight. Skies are expected to remain mostly clear with a few clouds above 1,500 feet. VFR forecast Friday as winds strengthen in the late afternoon/evening.

Vicinity of KSFO . Clear skies and VFR. Winds remain onshore and 15-18 knots with occasional stronger gusts. Winds will ease over night slightly, but remain breezy. Skies should also remain mostly clear and VFR, but cannot rule out a few midlevel clouds. Thursday will be VFR once again, with onshore winds ramping up in the afternoon ahead of the next system approaching.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR with breezy onshore winds. Winds will ease overnight. A few clouds may develop over the peninsula, but are not currently forecasting lower than 1,500. VFR once again on Friday with stronger winds in the early evening.

MARINE. as of 02:14 PM PDT Thursday . Moderate northwesterly winds will prevail across the coastal waters with occasional gale force gusts are possible through tonight and into Friday. These winds will produce fresh and steep wind generated waves, creating hazardous conditions for smaller vessels. Winds will begin to subside late Friday and into the weekend. A moderate, predominately winds driven, northwesterly swell will prevail through much of the forecast period.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. 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 Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Mry Bay until 3 AM SCA . SF Bay until 9 PM



PUBLIC FORECAST: DRP AVIATION: DK MARINE: CW

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 Temp	Water Temp	Waves	Pressure	DewPt
RTYC1 - 9414523 - Redwood City, CA	20 mi	54 min	W 12 G 15	55°F	62°F		1019.1 hPa
LNDC1	23 mi	54 min	WNW 6 G 7	58°F			1018 hPa
AAMC1 - 9414750 - Alameda, CA	23 mi	54 min	WNW 9.9 G 14	56°F	61°F		1018.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	25 mi	60 min	W 11 G 16
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	26 mi	60 min	WNW 8.9 G 14	60°F			1016.9 hPa
OBXC1	26 mi	54 min		56°F				40°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	26 mi	54 min	W 8 G 9.9	56°F			1018 hPa
PCOC1 - 9415144 - Port Chicago, CA	28 mi	54 min	SW 8.9 G 12	58°F	59°F		1017.1 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA	28 mi	54 min	SW 8 G 15	55°F			1017 hPa
PXSC1	29 mi	54 min		57°F				39°F
UPBC1	29 mi	54 min	W 11 G 13
MZXC1 - 9415102 - Martinez-Amorco CA	29 mi	54 min	W 9.9 G 11	58°F	59°F		1017.6 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	30 mi	54 min	WNW 11 G 19	58°F			1018.1 hPa
FTPC1 - 9414290 - San Francisco, CA	32 mi	54 min			60°F
RCMC1 - 9414863 - Richmond, CA	33 mi	54 min	NW 8.9 G 12	56°F	57°F		1017.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	34 mi	54 min	WSW 7 G 11	57°F			1017.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA	34 mi	38 min	Calm	55°F			1018 hPa
SFXC1 - San Francisco Bay Reserve, CA	38 mi	87 min	W 9.9
46237 - San Francisco Bar, CA (142)	40 mi	72 min			56°F	7 ft

Wind History for Redwood City, CA

(wind in knots)    EDIT      (on/off)   Help

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

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

Last 24hr

W8

W7 G11

W4

SW2

SW3

SW2

S1

S1

S2

S2

SW1

W2

NW3

NW4

NW8 G11

NW7 G11

NW8 G11

NW9 G12

W15

W12 G16

NW13 G18

W14 G18

W14 G17

W13 G16

1 day ago

NW10 G15

W12 G15

SW5 G9

SW8

W11 G14

W11

W8 G14

W10 G14

W8

W10

W9

W9 G14

W11 G14

NW10 G13

NW9 G13

NW11 G14

NW12 G15

NW15 G19

NW17

W17

W16 G20

W16

W13 G16

W9 G12

2 days ago

W8

W5

W4

SW3

SW3

SW4

SW2

S1 G4

S1

SW3

SW2

SW4

W4

SW1

NE2

N4 G7

N5 G10

NW12 G18

NW11 G16

NW10 G15

NW12 G17

W10 G13

W13 G17

W19

---

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
Livermore, Livermore Municipal Airport, CA	5 mi	4.3 hrs	WSW 16	10.00 mi	Fair	64°F	35°F	34%	1017.1 hPa
Hayward, Hayward Air Terminal, CA	12 mi	4.3 hrs	W 19	10.00 mi	Fair and Breezy	61°F	37°F	41%	1019.3 hPa
Oakland, Metro Oakland International Airport, CA	18 mi	4.3 hrs	W 15	10.00 mi	Fair	63°F	39°F	41%	1018.5 hPa
San Jose, San Jose International Airport, CA	20 mi	4.3 hrs	NW 12	10.00 mi	Fair	66°F	30°F	26%	1017.8 hPa
San Carlos Airport, CA	21 mi	85 min	WSW 14	10.00 mi	Clear	55°F	32°F	41%	1019 hPa
Concord, Buchanan Field, CA	24 mi	3.3 hrs	WSW 11 G 17	10.00 mi	Fair	66°F	34°F	30%	1016 hPa

Link to 5 minute data for KLVK

Wind History from LVK (wind in knots)

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

12 PM

1 PM

2 PM

3 PM

4 PM

Last 24hr

W10

W9

SW6

S6

S4

Calm

Calm

Calm

E3

E4

NE3

Calm

Calm

Calm

Calm

Calm

SW3

N10 G14

W6

5

NW11

4

--

W16

1 day ago

W10

W11

W12

W8

W9

SW4

S6

SW5

SW7

SW5

SW4

SW7

SW5

W4

W4

W8

NW6

W5

W7

W8

W10

W8

SW10

W7

2 days ago

W10

W9

W10

W6

W8

W5

Calm

Calm

Calm

Calm

Calm

Calm

E3

Calm

E3

Calm

SW4

S3

Calm

Calm

W7

W7

W12

W8

---

Tide / Current Tables for Alameda Creek, San Francisco Bay, California

   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data

---

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current

   EDIT      (on/off)   Help   One Week of Data

---

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 (23,6,7,8)

      (on/off)   Help

---

Ground Weather Radar Station San Francisco Bay Area, CA

   (on/off)   Help

---

Cookie Policy: This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser. Privacy Policy: I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway. Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.