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Marine Weather and Tides Livermore, CA Version 3.4

NOTICE 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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 7:12AM

Sunset 4:50PM

Saturday December 14, 2019 10:01 PM PST (06:01 UTC)

Moonrise 7:30PM

Moonset 9:34AM

Illumination 87%

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.

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7 Day Forecast for Marine Location Near Livermore, CA

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

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FXUS66 KMTR 150541 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 941 PM PST Sat Dec 14 2019

SYNOPSIS. Scattered showers will be ending later tonight. Cooler and drier conditions are then forecast from Sunday into early next week. Unsettled weather conditions are expected to return for the middle and latter half of next week and will potentially continue into next weekend.

DISCUSSION. as of 9:30 PM PST Saturday . An upper level low is centered off the southern Oregon coast. Cool air aloft has settled into the area as the 850 mb temperature at 00Z is 10 degrees C colder than 24 hours ago. This has destabilized the airmass generating scattered showers over the area. Some of the showers have been moderate intensity and has produced up to 1/4 inch but generally rainfall amounts have been 1/10 of an inch or less.

The low will move inland over southern Oregon later tonight. The flow over the area will switch more northerly bringing drier air and ending the showers. Models indicate lingering low level moisture Sunday so we should see a lot of cumulus clouds around. The low levels dry out Sunday night and Monday for clearing skies. With the clearing skies comes colder temperatures. Lows on Sunday night will drop into the 30s over inland areas with upper 30s to mid 40s around the bays. Patchy frost is possible.

High clouds start to increase Monday night ahead of the next system. Lows Monday night are now forecast to be a couple of degrees warmer. Mid and high clouds continue to increase on Tuesday. There is still uncertainty about rain chances Tuesday night and Wednesday. The GFS has consistently advertised rain by bringing an upper low right through the CWA. But the ECMWF has been waffling between dry and wet with the latest 12Z run taking all of the precip south of the CWA. Given the GFS has had more run-to-run consistency . it is the preferred model.

There is more agreement with the medium-range models for unsettled weather for the area next weekend.

AVIATION. as of 09:41 PM PST Saturday . For 06z TAFs. A weak frontal system is moving through bringing some light showers to the region. Showers should taper off from north to south over the next few hours. Current obs show FEW to SCT cigs between 1,000-3,000 feet with another SCT to BKN layer at 4,000-5,000 ft. Cigs will generally remain VFR aside from some patchy lower clouds overnight. Cigs will then clear out tomorrow morning and throughout the day. Overall, expect VFR conditions to prevail through the period with patchy MVFR cigs possible overnight. As skies clear out, would not be surprised to see some patchy fog around KSTS early tomorrow morning. Winds have diminished this evening with W to NW winds now around 10 kt. W to NW winds should continue to subside overnight.

Vicinity of KSFO . VFR through the period with FEW to SCT clouds between 3,000 and 5,000 ft AGL. Conditions should continue to improve throughout the day tomorrow. Breezy winds seen earlier this afternoon have weakened with W to NW winds now around 10-15 kt, which should persist overnight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mainly VFR with borderline MVFR/VFR conditions expected as showers move through. Showers will clear out later tonight. Cigs expected to lift mid to late Sunday morning. Winds have eased this evening, expect W to NW winds around 10 kt or less overnight.

MARINE. as of 08:34 PM PST Saturday . Scattered showers will continue tonight across the waters as a weak cold front moves through the region. Northwest winds will increase into tomorrow as a coastal trough develops over southern California while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through tomorrow evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.

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 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 SCA . SF Bay



PUBLIC FORECAST: W Pi AVIATION: AS MARINE: AS

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
RTYC1 - 9414523 - Redwood City, CA	30 mi	49 min	WNW 4.1 G 5.1	50°F	58°F		1018.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	33 mi	49 min	W 6 G 8.9	50°F			1016.6 hPa
AAMC1 - 9414750 - Alameda, CA	36 mi	43 min			55°F
LNDC1	36 mi	49 min	NW 4.1 G 7	52°F			1017.8 hPa
PCOC1 - 9415144 - Port Chicago, CA	37 mi	43 min			53°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	38 mi	49 min	WNW 8.9 G 11
UPBC1	39 mi	43 min	WNW 19 G 23
OKXC1 - 9414776 - Oakland (Berth 34), CA	39 mi	49 min	NW 8.9 G 13	52°F			1017.8 hPa
OBXC1	39 mi	49 min		53°F				45°F
MZXC1 - 9415102 - Martinez-Amorco CA	39 mi	49 min	WNW 15 G 17	51°F	54°F		1016.8 hPa	51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA	41 mi	43 min	W 2.9 G 8	52°F			1016.8 hPa
PXSC1	42 mi	43 min		53°F				46°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA	43 mi	43 min	W 5.1 G 7	52°F			1018.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	45 mi	43 min	W 12 G 16	51°F			1017 hPa
FTPC1 - 9414290 - San Francisco, CA	45 mi	49 min	WSW 1.9 G 5.1	51°F	55°F		1017.9 hPa
RCMC1 - 9414863 - Richmond, CA	46 mi	43 min			55°F
SFXC1 - San Francisco Bay Reserve, CA	46 mi	76 min	WNW 8	48°F			1016 hPa	44°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA	46 mi	44 min	Calm	49°F			1018 hPa

Wind History for Redwood City, CA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Livermore, Livermore Municipal Airport, CA	11 mi	68 min	WSW 9	10.00 mi	Fair	48°F	44°F	86%	1016.8 hPa
San Jose, San Jose International Airport, CA	21 mi	68 min	WNW 8	10.00 mi	Partly Cloudy	50°F	45°F	83%	1017.9 hPa

Link to 5 minute data for KLVK

Wind History from LVK (wind in knots)

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Tide / Current Tables for Grant Line Canal (drawbridge), Old River, California

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

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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

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Wind Forecast for San Francisco/Monterey Bay Area, CA (1,6,7,8)

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Ground Weather Radar Station San Francisco Bay Area, CA

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