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Marine Weather and Tides Belvedere, 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.

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Sunrise 6:18AM

Sunset 8:11PM

Saturday August 8, 2020 5:22 AM PDT (12:22 UTC)

Moonrise 10:09PM

Moonset 10:03AM

Illumination 79%

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 Belvedere, CA

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

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FXUS66 KMTR 081129 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 429 AM PDT Sat Aug 8 2020

SYNOPSIS. Warmer temperatures are expected over the weekend, especially inland. Slightly cooler weather returns early next week.

DISCUSSION. As of 3:00 AM PDT Saturday . There is a weak upper level low over central California with high pressure to the west and to the east over Texas. The upper low is forecast to drift off the coast today allowing the high over Texas to build westward. The 500 mb heights rise which will result in warmer temperatures today and Sunday. Temperatures will be warmest on Sunday ranging from the mid 60s to low 70s at the coast . to the 90s well inland, about 5 degrees above normal. The marine layer will become compressed while surface winds become light southerly near the coast. This will maintain the night and morning low clouds at the coast with less inland penetration.

Something to watch is the upper low drawing in some mid-level moisture from the Sierras into our district. Models indicate increased humidities at around 700 mb Saturday afternoon but believe there is not enough instability to cause any elevated convection within the CWA as the low will be drifting westward.

Still looking at cooling for early next week as an upper trough moves into British Columbia and deepens along the west coast. Temperatures should cool back to near normal values.

AVIATION. As of 04:29 AM PDT Saturday . for 12z TAFs. Mixed conditions this morning ranging from VFR to IFR. The marine layer is around 1500 to 1800 ft per profiler data while satellite imagery shows stratus along the coast through the Golden Gate gap and over the Monterey Bay region. Expecting VFR conditions to develop late this morning around 17z-18z then prevailing this afternoon. Expect low clouds to redevelop again overnight. Light winds this morning turning onshore this afternoon around 15 kt.

Vicinity of KSFO . Satellite shows patches of stratus developing around the south SF Bay. Intermittent IFR/VFR conditions this morning (until ~16z). Surrounding observations put cigs at about 600 to 700 ft. VFR conditions by late morning with increasing onshore winds to about 15 kt or so.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . IFR/LIFR conditions this morning. Satellite shows stratus over the Bay, Peninsula, and down the Salinas Valley. VFR conditions expected to develop by around 18z with another early return of stratus anticipated this evening. Onshore winds this afternoon around 10-15 kt.

MARINE. as of 01:56 AM PDT Saturday . Split flow today and tonight with north to northwest winds over the outer waters and southerly winds along the inner coastal waters. Expect locally breezy conditions to persist over the northern outer waters through much of the weekend. These winds will create locally hazardous conditions for smaller vessels. Winds will diminish into Sunday with southerly winds gradually expanding into much of the outer waters. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . SF Bay from 3 PM



PUBLIC FORECAST: W Pi AVIATION: AS MARINE: AS

Visit us at www.weather.gov/sanfrancisco

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
FTPC1 - 9414290 - San Francisco, CA	2 mi	53 min	WSW 5.1 G 8.9	56°F	62°F		1014.1 hPa
PXSC1	3 mi	53 min		58°F				58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA	3 mi	53 min	W 5.1 G 7	57°F			1012.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	6 mi	53 min	NE 4.1 G 5.1
OBXC1	6 mi	53 min		59°F				59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	6 mi	53 min	NW 5.1 G 7	58°F			1013.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	7 mi	53 min	SW 14 G 19	58°F			1014 hPa
RCMC1 - 9414863 - Richmond, CA	7 mi	53 min	W 2.9 G 6	58°F	66°F		1013.6 hPa
AAMC1 - 9414750 - Alameda, CA	8 mi	53 min	N 1 G 1.9	59°F	69°F		1013.9 hPa
LNDC1	9 mi	53 min	NE 4.1 G 6	59°F			1013.8 hPa
46237 - San Francisco Bar, CA (142)	11 mi	53 min			58°F	5 ft
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	18 mi	53 min	WSW 9.9 G 17	59°F			1013.2 hPa
UPBC1	22 mi	53 min	WNW 9.9 G 13
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	22 mi	33 min	S 12 G 14	53°F	54°F	7 ft	1014.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA	22 mi	53 min	NW 8.9 G 12	60°F	69°F		1013 hPa
RTYC1 - 9414523 - Redwood City, CA	25 mi	53 min	WNW 1.9 G 4.1	62°F	73°F		1014.4 hPa
PCOC1 - 9415144 - Port Chicago, CA	26 mi	53 min	W 17 G 19	60°F	70°F		1012.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	33 mi	53 min	NW 12 G 18	64°F			1011.9 hPa
SFXC1 - San Francisco Bay Reserve, CA	34 mi	98 min	W 8
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA	40 mi	33 min	S 7.8 G 12	55°F		9 ft	1014.8 hPa	55°F

Wind History for San Francisco, CA

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

5 AM

6 AM

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11 AM

12 PM

1 PM

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3 PM

4 PM

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6 PM

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1 AM

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Last 24hr

SW6 G13

SW4 G10

S4 G8

SW3 G6

SW7 G11

SW10 G16

SW10 G13

W9 G13

SW11 G19

W7 G16

W11 G17

W10 G17

W11 G20

W10 G18

W8 G16

W7 G12

W6 G12

NE2 G8

SW5 G9

W5 G11

SW3 G12

SW9 G16

SW4 G9

W5 G12

1 day ago

SW5

SE2

S5

SW5

W4 G7

W7 G11

W7 G11

W12 G15

W8 G11

W12 G17

SW13 G19

SW10 G15

SW9 G16

SW13 G18

SW17 G23

W9 G15

SW12 G19

W9 G13

SW11 G17

S4 G12

S4 G10

SW5 G10

SW3 G8

W5 G10

2 days ago

W10 G15

W10 G17

W5 G12

SW11 G18

W9 G17

W12 G18

SW9 G18

SW8 G17

SW9 G19

W10 G17

W13 G20

SW11 G18

SW9 G15

SW8 G15

W10 G18

W11 G17

SW9 G21

SW11 G16

W6 G14

SW3 G10

SW2 G5

S2 G5

S3

S4 G8

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Oakland, Metro Oakland International Airport, CA	15 mi	30 min	NNE 3	10.00 mi	Mostly Cloudy	60°F	54°F	80%	1013.9 hPa
San Francisco, San Francisco International Airport, CA	15 mi	27 min	N 0	10.00 mi	Fair	58°F	54°F	87%	1013.7 hPa
Hayward, Hayward Air Terminal, CA	21 mi	29 min	N 0	9.00 mi	A Few Clouds	61°F	55°F	81%	1014.6 hPa
Half Moon Bay Airport, CA	22 mi	28 min	SSE 10	4.00 mi	Fog/Mist	55°F	55°F	100%	1014.6 hPa
Concord, Buchanan Field, CA	23 mi	30 min	N 4	10.00 mi	Fair	61°F	55°F	84%	1011.7 hPa
San Carlos Airport, CA	23 mi	28 min	N 0	10.00 mi	Overcast	61°F	57°F	88%	1014.2 hPa
Novato / Gnoss Field, CA	23 mi	48 min	NNW 4	10.00 mi	Fair	54°F	51°F	94%	1013.9 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)

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Last 24hr

S4

NW7

Calm

SE4

N4

NE7

NE6

NE7

N8

NE7

NW9

NW13

NW13

NW16

NW14

NW14

NW10

NW10

NW10

NW7

W6

W7

W5

Calm

1 day ago

SW7

Calm

SW5

N5

NE6

NE6

NE7

NW15

NW13

W19

W16

W15 G27

W20 G28

W22 G31

W13

W16 G22

W12

W8

SW10

SW7

Calm

N3

Calm

S4

2 days ago

W15 G25

W14 G21

W13 G18

W14

W18 G24

W16

W17 G21

W19 G26

W19 G27

W15 G25

W16 G27

W16 G31

W18 G25

W20 G26

W14 G25

W13

W15 G22

W16 G20

W11 G19

SW10

W9

W7

SW8

W9

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Tide / Current Tables for Alcatraz Island, San Francisco Bay, California

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Tide / Current Tables for Alcatraz Island W, 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 (8,2,3,4)

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Ground Weather Radar Station San Francisco Bay Area, CA

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