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Marine Weather and Tides Brisbane, 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 5:57AM

Sunset 8:33PM

Monday July 13, 2020 6:27 PM PDT (01:27 UTC)

Moonrise 12:07AM

Moonset 1:10PM

Illumination 38%

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 Brisbane, CA

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

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FXUS66 KMTR 132354 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 454 PM PDT Mon Jul 13 2020

SYNOPSIS. Interior areas are forecast to cool through midweek as onshore flow increases and high pressure weakens. Temperatures will then likely remain near seasonal averages for the remainder of the week and into next weekend. Expect increasing night and morning low clouds through midweek.

DISCUSSION. as of 03:00 PM PDT Monday . Marine layer is up to around 1700ft on the Fort Ord Temperature Profiler as boundary layer conditions return to what is typically expected for early- to-mid July.

The 596dm 500mb upper-level ridge has trekked eastward into the Texas Panhandle. Low-clouds and fog dissipated from northwestern Alameda county, most the Bay, and the Salinas Valley since this morning but are still widespread along the coast, with stratus inclusion along the Golden Gate and all the way down to Monterey Bay. A small clearing is visible over Santa Cruz and most of coastal Santa Cruz county owing to the onshore flow.

Min temps across the interior were observed in the upper 50s to low 60s F range with higher-elevation areas like those up in the East Hills just barely making it into the low 60s F. This a sharp contrast from the 70s F that were observed on Saturday and Sunday Morning.

Troughing over the Western Canadian Prairies and the Pacific Northwest has reintroduced onshore flow that is typical for this time of the year. Expect cooling trend across the interior, where max temps are progged to be 7 to 12 degrees F lower than yesterday's. As we head into Tuesday and Wednesday, off-shore cyclonic flow will increase, resulting in southerly flow near the surface which will allow for more cooling to occur along the coast. Due to this setup we should also expect the marine layer to continue to build and for lower morning ceilings as the workweek progresses.

Another disturbance is set to develop off the Gulf of Alaska and make its way down the Alexander Archipelago, with its axis expected to be over Vancouver Island sometime Thursday morning/afternoon. As the weaker upper-level ridge sits over the Texas Panhandle, it will introduce anticyclonic flow that, combined with the offshore cyclonic flow from the upper-level trough will result in the first slug of monsoonal activity for the CWA and surrounding areas. The added moisture may potentially lead to the development of accus across the North Bay Thursday afternoon as an unstable air mass develops east of our CWA and along the Sierra. Confidence is currently high that we do not expect any major dry lightning concerns from this setup over our CWA, but it is a setup that we'll be monitoring as we get closer to Thursday. For now, the possibility for some accus could make for dazzling sunsets over parts of our CWA.

Going into the weekend, expecting some onshore flow to continue and for a slight uptick in temps across the interior as model guidance suggests that a strong upper- level ridge will begin building off the coast ahead of the departing disturbance.

AVIATION. as of 4:52 PM PDT Monday . for 00z TAFs. VFR inland with stratus clouds hugging the coastline allowing for a few clouds over the SF Bay and MVFR conditions over the Monterey Peninsula. Winds remain onshore and breezy, with stronger gusts around 20 kts at several terminals. An earlier and more widespread return of low clouds for IFR conditions is forecast tonight, through 17z on Tuesday. Winds will reduce somewhat overnight, but remain onshore. VFR forecast for Tuesday afternoon as onshore winds increase.

Vicinity of KSFO . A FEW clouds linger around terminals as winds remain breezy with occasional stronger gusts. With the marine layer continuing to deepen, the forecast remains with chances of lower clouds at the terminal in the early morning hours of Tuesday. Winds will remain breezy through the TAF period. VFR forecast for Tuesday afternoon as increasing winds out of the northwest can be expected.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . MVFR as stratus clouds sit inside Monterey Bay and are slowly nudging into the Salinas Valley. Expect cigs to lower and provide IFR conditions and patchy overnight. Clouds are expected to linger on Tuesday, but lift to MVFR levels as winds increase, with stronger gusts expected in the Salinas Valley.

MARINE. as of 02:32 PM PDT Monday . Moderate to locally strong northwest winds will persist over the northern and outer coastal waters through Tuesday. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. Additionally, winds will be strong from the Golden Gate through the Delta. By midweek, a nearly stationary low pressure trough will develop over the coastal waters and cause winds to shift to a southerly direction mainly over the southern and inner coastal waters. A longer period south swell will mix with the steep fresh northwest swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . SF Bay until 11 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 6 PM



PUBLIC FORECAST: Diaz/DP AVIATION: DK MARINE: MM

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
AAMC1 - 9414750 - Alameda, CA	8 mi	57 min			71°F
FTPC1 - 9414290 - San Francisco, CA	10 mi	57 min			62°F
RTYC1 - 9414523 - Redwood City, CA	14 mi	57 min			75°F
46237 - San Francisco Bar, CA (142)	16 mi	87 min			58°F	4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA	16 mi	59 min	SW 12	58°F			1011 hPa
RCMC1 - 9414863 - Richmond, CA	18 mi	57 min			66°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	25 mi	37 min	W 9.7 G 12	55°F			1012.8 hPa	53°F
MZXC1 - 9415102 - Martinez-Amorco CA	29 mi	57 min			74°F
PCOC1 - 9415144 - Port Chicago, CA	32 mi	57 min			74°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA	34 mi	37 min	WNW 12 G 18	57°F		8 ft	1013.5 hPa	54°F
SFXC1 - San Francisco Bay Reserve, CA	41 mi	102 min	W 13

Wind History for Alameda, CA

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

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W7

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SW12 G15

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W4 G7

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
San Francisco, San Francisco International Airport, CA	4 mi	31 min	WNW 15	10.00 mi	A Few Clouds	64°F	51°F	63%	1011.4 hPa
Oakland, Metro Oakland International Airport, CA	9 mi	34 min	W 9	10.00 mi	A Few Clouds	66°F	53°F	63%	1011.7 hPa
San Carlos Airport, CA	12 mi	31 min	W 9	10.00 mi	A Few Clouds	70°F	51°F	53%	1010.8 hPa
Half Moon Bay Airport, CA	13 mi	32 min	SW 4	4.00 mi	Fog/Mist	55°F	51°F	88%	1013.5 hPa
Hayward, Hayward Air Terminal, CA	14 mi	33 min	WNW 12	10.00 mi	Fair	67°F	53°F	61%	1012.2 hPa
Palo Alto Airport, CA	19 mi	2.7 hrs	N 14 G 21	10.00 mi	Clear	72°F	57°F	61%	1011.2 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)

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NW15 G24

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Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California (3)

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Tide / Current Tables for Sierra Point 1.3 mi ENE, 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 (21,6,7,8)

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Ground Weather Radar Station San Francisco Bay Area, CA

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