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Marine Weather and Tides Redwood City, CA Version 3.4

NOTICE 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 5:59AM

Sunset 8:30PM

Wednesday July 17, 2019 3:30 AM PDT (10:30 UTC)

Moonrise 8:21PM

Moonset 5:38AM

Illumination 100%

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 Redwood City, CA

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

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Fxus66 kmtr 170545 afdmtr area forecast discussion national weather service san francisco bay area 1045 pm pdt Tue jul 16 2019 Synopsis A gradual cooling trend is forecast through the end of the work week. Slightly warmer weather will likely develop by the end of the upcoming weekend, with more significant warming expected next week. Discussion As of 9:00 pm pdt Tuesday... Similar to yesterday, marine layer clouds cleared from most coastal areas by late in the afternoon. But latest satellite imagery reveals that low clouds are rapidly redeveloping along the coast and locally into the east bay. A cooling trend that got underway in most locations today is expected to continue through the remainder of the work week. However, there may be little, if any, cooling tomorrow as the weak shortwave trough currently located over northern california moves off to our east and we see slight airmass warming over our area. The cooling trend is then expected to redevelop on Thursday and continue into Friday as an upper trough develops over the pacific northwest and sags south into northern california. Inland areas will experience the most cooling (5-10 degrees by Friday). Expect night and morning low clouds to become more widespread by Thursday morning and especially Friday morning. The trough over the pacific northwest is forecast to lift to the northeast by the time the weekend begins, but temperatures will likely remain at least a few degrees cooler than seasonal averages through Saturday, with slight warming then expected by Sunday. In the longer range, the models agree that an upper ridge will build across the western CONUS during the first half of next week, resulting in a warming trend, especially inland. Aviation As of 10:45 pm pdt Tuesday... Coastal stratus and fog is increasing in coverage and extending over to the east bay. Despite a relatively shallow marine layer depth stratus advected by onshore winds have reached ksfo to koak and khwd. Outside of locations in the east bay, the coastal north bay to san francisco where winds remain gusty observations and the WRF model show a general decrease in surface to lower level winds thus greatly reducing the chances of any lingering low level wind shear (llws) for the overnight. None of the 06z tafs advertise llws. A mid latitude 500 mb trof passage late tonight and Wednesday

morning with a corresponding cyclonic circulation at the 925 mb and 850 mb levels causes cooling and deepening of the marine layer to focus mostly from the south bay to the north central coast. Elsewhere 925 mb temperatures warm by a few degrees, which should keep the marine layer depth either unchanged or compress it a little. Best chance for marine based clouds and fog will be along the coast over to the east bay and south bay southward along the north central coast tonight and Wednesday morning,VFR to the north and inland. Sufficient mixing is forecast Wednesday to lift ceilings and visibilities on the coast whileVFR continues inland. A weak southerly wind reversal may develop along the north central coast Wednesday. The 06z tafs wind forecasts mostly depart from statistical guidance later in the forecast period based on reasoning described above. Vicinity of ksfo... West wind still gusting to near 25 knots.VFR turned to MVFR ceiling due to advection of stratus by a west wind earlier this evening. 06z TAF adjusted for recent change, but not certain the stratus ceiling will hold all night as the marine layer depth probably remains unchanged and the acv-sfo pressure gradient is nearing 6 mb, a stronger northerly coastal wind could end up drawing the stratus back to the ocean overnight. Thus ksfo marginal MVFR ceiling with tendency towardVFR return Wednesday morning probably early, but timing this is low confidence. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Stratus redeveloped a little quicker than earlier forecast. Patchy drizzle could develop tonight.VFR returns Wednesday morning with winds becoming southerly during the late morning and afternoon. Marine As of 8:54 pm pdt Tuesday... Gusty northwest winds continue across the waters. These winds will generate steep fresh swell resulting in hazardous seas conditions particularly for smaller vessels. Light long period southerly swell will continue through at least mid week. Mtr watches warnings advisories Tngt Sca... Mry bay until 3 am sca... Pt reyes to pigeon pt 0-10 nm until 3 am sca... Pigeon pt to pt pinos 0-10 nm until 3 am sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am sca... Pt arena to pt reyes 0-10 nm sca... Pt arena to pigeon pt 10-60 nm sca... Pigeon pt to pt piedras blancas 10-60 nm public forecast: dykema aviation marine: canepa visit us at

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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	1 mi	42 min	NNW 4.1 G 5.1		73°F		1012.5 hPa
AAMC1 - 9414750 - Alameda, CA	18 mi	48 min	SE 6 G 8		68°F		1012.4 hPa
LNDC1	19 mi	42 min	S 6 G 8.9				1011.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	21 mi	48 min	SW 9.9 G 12
OBXC1	21 mi	48 min		57°F				57°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	21 mi	42 min	SW 6 G 8.9				1011.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA	22 mi	48 min	SE 5.1 G 8	56°F			1010.9 hPa
FTPC1 - 9414290 - San Francisco, CA	24 mi	48 min	S 4.1 G 8		57°F		1012.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	28 mi	48 min	S 14 G 16	58°F			1011.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA	29 mi	31 min	SSE 7	55°F			1011 hPa
46237 - San Francisco Bar, CA (142)	29 mi	30 min			53°F	5 ft
RCMC1 - 9414863 - Richmond, CA	30 mi	42 min			63°F
UPBC1	36 mi	48 min	SSW 1.9 G 2.9
MZXC1 - 9415102 - Martinez-Amorco CA	36 mi	48 min	S 2.9 G 4.1	62°F	69°F		1010.8 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	37 mi	48 min	SW 6 G 7	61°F			1010.6 hPa
PCOC1 - 9415144 - Port Chicago, CA	38 mi	48 min	SSW 6 G 12	59°F	70°F		1010.6 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	38 mi	20 min	W 5.8 G 7.8	54°F	53°F		1012.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	40 mi	48 min	WNW 4.1 G 8	65°F			1009.7 hPa
SFXC1 - San Francisco Bay Reserve, CA	48 mi	45 min	WSW 5.1	60°F			1010 hPa	55°F

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
Mountain View, Moffett Field, CA	10 mi	94 min	SE 5	10.00 mi	Fair	61°F	55°F	81%	1012.8 hPa
Hayward, Hayward Air Terminal, CA	11 mi	36 min	W 5	10.00 mi	Fair	59°F	54°F	83%	1012.8 hPa
San Francisco, San Francisco International Airport, CA	11 mi	34 min	SW 5	10.00 mi	Mostly Cloudy	59°F	52°F	78%	1011.8 hPa
Oakland, Metro Oakland International Airport, CA	12 mi	37 min	WSW 7	10.00 mi	Overcast	61°F	54°F	78%	1012.1 hPa
Half Moon Bay Airport, CA	16 mi	35 min	N 0	5.00 mi	Fog/Mist	57°F	53°F	88%	1012.9 hPa
San Jose, San Jose International Airport, CA	18 mi	37 min	SE 7	10.00 mi	Fair	59°F	55°F	87%	1011.8 hPa
Livermore, Livermore Municipal Airport, CA	24 mi	37 min	NW 5	10.00 mi	Fair	58°F	53°F	84%	1011.1 hPa

Wind History from SQL (wind in knots)

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Tide / Current Tables for Redwood Creek entrance (inside), San Francisco Bay, California

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Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current

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Weather Map and Satellite Images

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GOES 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 (6,6,7,8)

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Ground Weather Radar Station San Francisco Bay Area, CA

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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 numerious 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.