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Marine Weather and Tides Colma, 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 7:17AM

Sunset 5:26PM

Saturday January 25, 2020 6:17 PM PST (02:17 UTC)

Moonrise 8:05AM

Moonset 6:20PM

Illumination 1%

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 Colma, CA

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

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FXUS66 KMTR 260028 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 428 PM PST Sat Jan 25 2020

SYNOPSIS. Temperatures in the 60s today before light rain expected around the Bay Area. Spotty rain is expected to start late this afternoon and continue this evening as a cold front moves through Sunday morning with limited accumulations. High pressure builds for drier conditions Sunday and Monday, though a chance for patchy fog Monday morning. A similar weak system moves through on Tuesday, with chances for light rain in the North Bay. Dry and mild conditions mid-week through next weekend.

DISCUSSION. as of 01:58 PM PST Saturday . Visibilities have improved compared to earlier this morning, but low clouds linger around the Bay Area. Clouds will continue to build ahead of the next boundary moving through. Temperatures are mostly in the 60s, with a few locations in the mid-50s.

A weak upper-level short wave trough passes over Northern California tonight and into Sunday morning. KMUX radar has already picked up on rain over the ocean and moving eastward. The dry air over the land has held up and kept all precipitation out to sea so far. As the first round of rain moves east, forcing will push the precipitation over the North Bay and parts of the Bay Area. A brief break of the rain will bring the second round ahead of the main cold front being driven by the trough. Generally speaking, the bulk of precipitation will be in the North Bay. The highest accumulations will be in the northern higher elevations of Sonoma county seeing a quarter of an inch to a half inch. The remainder of the Bay Area should see less than a quarter of an inch.

As the next ridge builds aloft, higher pressure will increase at the surface helping to dry out the region. Temperatures will cool on Sunday behind the front compared to today, but should still reach the low-60s in many areas. A chance for some patchy fog Sunday night into Monday morning, but Monday looks to be another dry and mild day.

The next upper level trough moves over the Bay Area on Tuesday. Again, with it comes the next boundary that brings rain chances to the Bay Area. But again, it appears to be weak and focused more toward the North Bay with minimal accumulations.

Longer range models are showing fairly dry conditions from the middle of the weak to next weekend as high pressure grows in the southeastern Pacific. It will help moderate moderate temperatures and keep rain chances away. By early next week, a longer wave pattern sets up. While it will keep drier conditions around, it will bring northerly air and therefore much cooler temperatures.

AVIATION. as of 4:28 PM PST Saturday . For 00Z TAFs. A weak cool frontal boundary is moving in from the west. VFR this evening then ceilings and visibilities lowering tonight with light rain showers.

Vicinity of KSFO . Improved visibility with VFR reported and wind west to northwest 5 to 10 knots. Ceiling lowering to MVFR by 02z then IFR by 09z tonight with light rain showers. VFR returns on Sunday.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR with northwest wind 5 to 10 knots. Lowering ceilings by mid evening to IFR with light wet weather late at night and Sunday morning. VFR returns on Sunday.

MARINE. as of 4:12 PM PST Saturday . Winds will shift to become south to southwest across the waters by this evening ahead of a weak surface frontal boundary before shifting to become northerly by Sunday morning. A long period west to northwest swell will this evening. Additional long period northwest swells will arrive by early next week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. NONE.



PUBLIC FORECAST: DK AVIATION: Canepa MARINE: Sims

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
PXOC1 - 9414311 - San Francisco (Pier 1), CA	8 mi	48 min	WSW 4.1 G 7	60°F			1018 hPa
PXSC1	9 mi	48 min		60°F				58°F
AAMC1 - 9414750 - Alameda, CA	9 mi	48 min			53°F
FTPC1 - 9414290 - San Francisco, CA	9 mi	48 min	WSW 4.1 G 7	55°F	54°F		1019.2 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA	10 mi	48 min	WNW 2.9 G 4.1	55°F			1019 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	10 mi	54 min	Calm G 1
OBXC1	10 mi	48 min		56°F				56°F
LNDC1	11 mi	48 min	NW 1 G 1	59°F			1018.8 hPa
46237 - San Francisco Bar, CA (142)	14 mi	48 min			53°F	8 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA	15 mi	31 min	SSE 5.1	55°F			1019 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	16 mi	48 min	SW 8 G 9.9	58°F			1019.2 hPa
RTYC1 - 9414523 - Redwood City, CA	16 mi	48 min	WNW 8 G 8.9	60°F	55°F		1019.2 hPa
RCMC1 - 9414863 - Richmond, CA	17 mi	48 min			53°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	23 mi	28 min	SSE 3.9 G 5.8	55°F	54°F	9 ft	1019.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	27 mi	48 min	NE 1.9 G 2.9	56°F			1018.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA	29 mi	48 min	Calm G 0	56°F	52°F		1018.5 hPa
UPBC1	29 mi	48 min	Calm G 1
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA	33 mi	28 min	SE 3.9 G 7.8	55°F	55°F	11 ft	1019.7 hPa	55°F
PCOC1 - 9415144 - Port Chicago, CA	33 mi	48 min	E 2.9 G 4.1	57°F	51°F		1018.1 hPa
PRYC1 - 9415020 - Point Reyes, CA	37 mi	48 min			54°F		1018.7 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	38 mi	48 min	SSE 4.1 G 5.1	56°F			1018.3 hPa
SFXC1 - San Francisco Bay Reserve, CA	42 mi	93 min	SE 2.9

Wind History for Alameda, CA

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

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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	5 mi	82 min	WNW 5	10.00 mi	Mostly Cloudy	61°F	54°F	78%	1018.5 hPa
Oakland, Metro Oakland International Airport, CA	11 mi	25 min	NW 3	10.00 mi	Mostly Cloudy	60°F	54°F	80%	1018.8 hPa
Half Moon Bay Airport, CA	12 mi	23 min	S 3	2.50 mi	Fog/Mist	55°F	53°F	94%	1019.6 hPa
San Carlos Airport, CA	14 mi	31 min	W 8	10.00 mi	Mostly Cloudy	61°F	55°F	83%	1019 hPa
Hayward, Hayward Air Terminal, CA	16 mi	24 min	NNW 3	10.00 mi	A Few Clouds	58°F	53°F	84%	1019.6 hPa
Palo Alto Airport, CA	21 mi	31 min	N 5	10.00 mi	Overcast	55°F	53°F	94%	1019 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)

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Tide / Current Tables for South San Francisco, San Francisco Bay, California

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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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