Wednesday, May22, 2019 L-36.com


Marine Weather and Tides
Menlo Park, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:52AMSunset 8:17PM Wednesday May 22, 2019 6:16 AM PDT (13:16 UTC) Moonrise 11:05PMMoonset 8:08AM Illumination 87% Phase: Waning Gibbous; Moon at 18 days in cycle
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.
Marine Forecasts
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 246 Am Pdt Wed May 22 2019
.small craft advisory in effect until 3 am pdt early this morning...
Today..W winds 5 to 15 kt. Gusts up to 25 kt this afternoon.
Tonight..W winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..SW winds 10 to 20 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
Sun..SW winds up to 10 kt.
PZZ500 246 Am Pdt Wed May 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A large northwest swell has arrived with seas in excess of 15 feet along with larger near shore breaking waves. Low pressure will move inland into the great basin and the central valley on Wednesday. This will result in increasing northwest winds with gale force gusts expected over the northern and outer waters. Gale force winds and large northwest swell will create hazardous conditions through midweek. Moderate wind and seas will persist through the end of the week, particularly in the northern outer waters.


7 Day Forecast for Marine Location Near Menlo Park, CA
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location: 37.52, -122.16     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 221157
afdmtr
area forecast discussion
national weather service san francisco bay area
457 am pdt Wed may 22 2019

Synopsis Isolated to scattered showers will linger through the
early morning before drier conditions develop this afternoon.

Temperatures will be on the warming trend through the remainder of
the week, yet will remain below seasonal averages. Unseasonably cool
and unsettled conditions continue into the upcoming weekend with a
renewed chance of rain showers as another system drops southward
across the region.

Discussion As of 03:16 am pdt Wednesday... Another active
morning with isolated to scattered showers, especially over the
central coast and coastal waters, as a short-wave disturbance
associated with the mid upper level trough digs southward across
the region. Rainfall amounts during the past 6 hours or so range
from a few hundredths to a tenth of an inch for most areas while
some inland portions of the bay area have remained dry. Meanwhile,
locally heavier rainfall has been reported within heavier showers
with totals during the same period of around one- quarter to one-
half of an inch. While these showers are likely to taper off from
north to south through the early morning, we cannot rule out an
isolated thunderstorm or two over the waters or along the central
coast before completely diminishing. Also of note, profiler data
at point sur indicates a snow level of around 5,200 feet with
chew's ridge surface temperature hold around 33-34 deg f. Thus,
cannot rule out the region's highest peaks seeing some snowfall
early this morning. For the remainder of the day, conditions will
dry out with temperatures warming about 4 to 8 degrees across the
interior compared to yesterday.

In wake of the departing mid upper level low, broad troughing will
persist over much of the western portion of the country through late
week. Being on the west side of the trough, temperatures will warm
slightly yet generally remain below seasonal averages with 60s at
the coast to lower middle 70s inland. May get enough daytime heating
on Thursday for a few showers to develop over interior portions of
the central coast based on short-range guidance. However, widespread
rainfall is unlikely through the remainder of the workweek.

Medium and longer range models indicate additional disturbances
rotating through the western periphery of the through this upcoming
weekend. Thus, look for increased chances of rain showers from late
Saturday into Sunday. With this said, confidence in widespread
rainfall occurring over the region remains low at this time.

Something worth keeping an eye on in the coming days if you have
outdoor plans this upcoming weekend. Regardless, cool and unsettled
conditions are likely to persist heading into early next week given
the unseasonably "troughy" pattern over the region.

Aviation As of 04:57 am pdt Wednesday... Upper low is tracking
to the southeast with showers decreasing in coverage from north to
south. A few showers will be possible at sjc mry and sns early
this morning. Clearing is occurring in the wake of the low but
residual low-level moisture is preventing skies from completely
clearing. Most terminals are expected to experience prevailingVFR
conditions through the morning but occasional MVFR will likely
occur through mid to late morning due to the residual moisture.

Generally west-northwest winds this morning at 5-10 kt will
increase this afternoon to 10-15 kt at most sites. MainlyVFR
conditions expected through the evening hours, with mry most
likely to develop MVFR CIGS by mid evening.

Vicinity of ksfo...VFR expected to prevail with sct at 2000-3000
feet this morning but occasional MVFR CIGS possible through late
morning. Breezy west- northwest winds with gusts to 20 kt expected
to decrease early this morning and then increase once again early
this afternoon with gusts 20-25 kt possible.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Scattered showers near mry possible
through 18z, with decreasing showers near sns through mid
morning. A mix of MVFRVFR expected this morning with clearing
late morning. A return to MVFR CIGS expected around mid evening.

Northwesterly winds of 10-15 kt this afternoon.

Marine As of 03:16 am pdt Wednesday... A large northwest swell
has arrived with seas in excess of 15 feet along with larger near
shore breaking waves. Low pressure will move inland into the great
basin and the central valley on Wednesday. This will result in
increasing northwest winds with gale force gusts expected over the
northern and outer waters. Gale force winds and large northwest
swell will create hazardous conditions through midweek. Moderate
wind and seas will persist through the end of the week,
particularly in the northern outer waters.

Mtr watches warnings advisories
Tday High surf advisory... Caz006-505-509-529-530
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 pt reyes 0-10 nm until 11 am
sca... Pt arena to pigeon pt 10-60 nm until 11 am
glw... Pt arena to pigeon pt 10-60 nm from 11 am
sca... Pigeon pt to pt piedras blancas 10-60 nm until 2 pm
glw... Pigeon pt to pt piedras blancas 10-60 nm from 2 pm
glw... Pt arena to pt reyes 0-10 nm from 11 am
sca... Rough bar advisory for sf bar
sca... Mry bay
public forecast: rgass
aviation: st
marine: st
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 3 mi28 min WNW 8 G 9.9 54°F 63°F1010.2 hPa
AAMC1 - 9414750 - Alameda, CA 19 mi34 min WNW 5.1 G 8 55°F 61°F1010 hPa
LNDC1 20 mi28 min N 5.1 G 7 54°F 1009.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 21 mi28 min NW 8.9 G 12
OBXC1 22 mi28 min 55°F 51°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi28 min NNW 9.9 G 12 55°F 1009.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 23 mi28 min WNW 7 G 9.9 54°F 1008.7 hPa
PXSC1 23 mi28 min 55°F 49°F
FTPC1 - 9414290 - San Francisco, CA 26 mi34 min SSW 2.9 G 4.1 52°F 58°F1010 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi28 min NW 5.1 G 6 55°F 1010 hPa
RCMC1 - 9414863 - Richmond, CA 31 mi28 min 59°F
46237 - San Francisco Bar, CA (142) 31 mi46 min 55°F10 ft
UPBC1 36 mi28 min WNW 9.9 G 13
MZXC1 - 9415102 - Martinez-Amorco CA 36 mi28 min NW 8.9 G 9.9 53°F 61°F1009.6 hPa53°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi28 min NNW 2.9 G 9.9 54°F 1009.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 38 mi28 min W 11 G 13 53°F 62°F1009.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 39 mi28 min W 6 G 9.9 53°F 1009.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 39 mi26 min NW 21 G 25 55°F 57°F11 ft1010.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 48 mi91 min WNW 5.1 51°F 1009 hPa47°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA9 mi20 minWNW 610.00 miOvercast55°F48°F77%1010 hPa
Hayward, Hayward Air Terminal, CA10 mi22 minNNW 410.00 miFair52°F46°F80%1010.4 hPa
Oakland, Metro Oakland International Airport, CA13 mi23 minN 010.00 miA Few Clouds53°F46°F80%1009.7 hPa
San Francisco, San Francisco International Airport, CA13 mi20 minW 77.00 miPartly Cloudy52°F48°F86%1009.7 hPa
San Jose, San Jose International Airport, CA16 mi23 minNNW 610.00 miLight Rain53°F51°F93%1009.4 hPa
Half Moon Bay Airport, CA18 mi21 minNNW 16 G 228.00 miOvercast54°F50°F88%1010.2 hPa
Livermore, Livermore Municipal Airport, CA22 mi23 minW 610.00 miA Few Clouds50°F45°F83%1008.9 hPa

Wind History from PAO (wind in knots)
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1 day ago------------------4CalmCalmCalmN7N9NW13NW7W7
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2 days ago------------------NW4555SE7--W9
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W5W5W5W5

Tide / Current Tables for Redwood Creek, C.M. No.8, San Francisco Bay, California
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Redwood Creek
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Wed -- 02:52 AM PDT     7.77 feet High Tide
Wed -- 05:54 AM PDT     Sunrise
Wed -- 09:08 AM PDT     Moonset
Wed -- 10:08 AM PDT     -0.84 feet Low Tide
Wed -- 05:06 PM PDT     6.73 feet High Tide
Wed -- 08:16 PM PDT     Sunset
Wed -- 10:18 PM PDT     3.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.26.57.57.87.364.32.40.8-0.3-0.8-0.50.62.13.75.26.36.76.45.64.63.63.13.3

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Wed -- 12:59 AM PDT     1.24 knots Max Flood
Wed -- 04:11 AM PDT     -0.00 knots Slack
Wed -- 05:54 AM PDT     Sunrise
Wed -- 07:17 AM PDT     -1.56 knots Max Ebb
Wed -- 09:07 AM PDT     Moonset
Wed -- 10:51 AM PDT     0.00 knots Slack
Wed -- 02:08 PM PDT     1.67 knots Max Flood
Wed -- 06:23 PM PDT     -0.00 knots Slack
Wed -- 08:02 PM PDT     -0.46 knots Max Ebb
Wed -- 08:16 PM PDT     Sunset
Wed -- 10:27 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.21.10.70.1-0.6-1.2-1.5-1.5-1.1-0.60.10.91.41.71.61.30.80.2-0.3-0.5-0.4-0.10.2

Weather Map and Satellite Images
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wmap_P
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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (9,2,3,4)
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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.