Tuesday, May21, 2019 L-36.com


Marine Weather and Tides
Kensington, 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 8:18PM Tuesday May 21, 2019 4:14 PM PDT (23:14 UTC) Moonrise 10:17PMMoonset 7:16AM Illumination 91% 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 Pm Pdt Tue May 21 2019
.small craft advisory in effect through late tonight...
Rest of today..W winds 15 to 25 kt with gusts up to 30 kt.
Tonight..W winds 15 to 25 kt with gusts up to 30 kt.
Wed..W winds 5 to 15 kt.
Wed night..W winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..SW winds 15 to 25 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 246 Pm Pdt Tue May 21 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Rapidly building northwest swell will arrive this evening and overnight with seas in excess of 15 feet along with larger near shore breaking waves. Showers and isolated Thunderstorms will be possible overnight as one last system drops down the coast. Behind this boundary strong and gusty northerly winds will develop with gale warnings now posted for Wednesday across much of the outer waters along with the near shore waters from point arena to point reyes. Gale force winds and large nw swell will create hazardous conditions through midweek with moderate wind and seas persisting through the end of the week. A cool upper trough will keep unsettled weather over the region into the holiday weekend.


7 Day Forecast for Marine Location Near Kensington, CA
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location: 37.9, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 211954
afdmtr
area forecast discussion
national weather service san francisco bay area
1254 pm pdt Tue may 21 2019

Synopsis A passing upper level low pressure will keep scattered
showers over the region today and tonight. Thunderstorms will be
possible late tonight over the coastal waters. Drier conditions
develop on Wednesday with temperatures warming slightly.

Unseasonably cool and unsettled conditions look to persist through
the upcoming weekend yet widespread rainfall appears less likely.

Discussion As of 12:53 pm pdt Tuesday... Kmux radar imagery this
afternoon looks very similar to the morning. Widely scattered
showers tracking from NW to se. Showers were initially associated
with the passing of a weak frontal boundary, but now in a post
frontal regime showers remain. Dual pol radar imagery has also
indicated that some of the showers are likely producing heavy rain
and small hail. For what it's worth freezing levels are rather low
for late may. Observations at chews ridge (5k ft) above big sur
are still in the mid 30s. Definitely a cold damp day for the
higher peaks around the region.

Longwave pattern indicates an upper level low near ca or border
drifting southward into norcal. Water vapor further confirms
position and movement of said low pressure. Latest short term
models bring the low southward tonight into early Wednesday
morning. As the upper low moves southward, more specifically the
cold core associated with it, instability will increase. Showers
will continue as the cold pool moves overhead. Several runs of
the models have keyed in on the coastal waters and the central
coast (big sur) for the greatest likelihood of precip.

Additionally, enough instability will be present to warrant a
slight chance for thunderstorms over the coastal waters late
tonight into early Wednesday.

A few lingering showers will be possible early Wednesday, but
shower activity will quickly diminish as the low moves south and
inland. Despite the departing upper low a broad lingering trough
will remain. Temperatures will warm on Wednesday into the 60s and
mid 70s, which is still about 5 to 8 degrees below normal for may.

The medium and long range models keep the broad upper level trough
parked over the region into next week. Several disturbances rotate
through the trough. Best chance for precip still appears to be
eastward of the cwa, especially the sierra. However, another upper
low does pass overhead this weekend and will bring a return of a
scattered showers. Needless to say, an usual pattern for the
region.

Aviation As of 11:16 am pdt Tuesday... For 18z tafs. Showers
and low CIGS to continue this afternoon but should wane after
sunset. Gusty west winds to impact most terminals as well. Final
shortwave may bring some showers to monterey bay region overnight
into early weds morning. Lingering moisture with cyclonic flow
aloft could mean plenty of CIGS for weds morning (similar to what
was observed Monday).

Vicinity of ksfo... BorderlineVFR MVFR conditions with cigs
between 2500-4000 ft agl. Scattered showers remain in the area and
will continue on and off throughout the day before tapering off
tonight. West winds will increase thru afternoon with gusts
20-30kt.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Showers with MVFR CIGS to continue today
and then ease this evening. More showers return overnight through
early weds as final system impacts the monterey bay region.

Marine As of 10:46 am pdt Tuesday... A passing cold front will
bring scattered showers to the coastal waters today. Behind the
front winds will increase out of the northwest resulting in
hazardous conditions. An unseasonably large northwest swell will
build over the waters throughout the day and combine with fresh
seas to create hazardous conditions through Wednesday. Winds will
continue to increase on Wednesday into Wednesday night with gale
force gusts possible over the northern and outer waters.

Mtr watches warnings advisories
Tngt High surf advisory... Caz506-505-509-529-530
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
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
sca... Sf bay until 3 am
sca... Mry bay until 3 am
public forecast: mm
aviation: rww
marine: mm
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA 5 mi44 min WNW 12 G 15 60°F 1012.7 hPa
LNDC1 7 mi44 min W 14 G 19 58°F 1012.8 hPa
OBXC1 7 mi44 min 57°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi44 min W 16 G 22 57°F 1012.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 7 mi44 min W 21 G 24
RCMC1 - 9414863 - Richmond, CA 7 mi50 min WNW 11 G 14 59°F 60°F1012.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi44 min W 17 G 21 57°F 1012 hPa
AAMC1 - 9414750 - Alameda, CA 9 mi50 min W 17 G 21 58°F 62°F1013.5 hPa
PXSC1 9 mi44 min 58°F 51°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 11 mi44 min W 20 G 24 60°F 1011.3 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi50 min WNW 13 G 20 56°F 58°F1013.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 12 mi44 min W 19 G 23 59°F 63°F1011.7 hPa52°F
UPBC1 13 mi44 min W 23 G 28
PCOC1 - 9415144 - Port Chicago, CA 17 mi44 min W 22 G 27 59°F 62°F1011.7 hPa
46237 - San Francisco Bar, CA (142) 20 mi74 min 58°F10 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 23 mi44 min WNW 22 G 29 61°F 1010.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 25 mi89 min W 17 62°F 1011 hPa47°F
RTYC1 - 9414523 - Redwood City, CA 27 mi44 min W 19 G 23 58°F 63°F1014 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi34 min WNW 21 G 27 56°F 57°F1013.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 38 mi44 min 59°F1013.2 hPa

Wind History for Point Potrero Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi2.4 hrsW 17 G 2710.00 miMostly Cloudy66°F44°F45%1010.8 hPa
Oakland, Metro Oakland International Airport, CA14 mi2.4 hrsW 24 G 2910.00 miPartly Cloudy and Windy65°F48°F56%1013.2 hPa
Hayward, Hayward Air Terminal, CA19 mi2.3 hrsW 18 G 2810.00 miMostly Cloudy and Breezy63°F50°F63%1014.3 hPa
San Francisco, San Francisco International Airport, CA20 mi2.3 hrsW 21 G 289.00 miOvercast and Breezy60°F48°F65%1013.7 hPa
Napa, Napa County Airport, CA21 mi2.3 hrsW 2110.00 miMostly Cloudy and Breezy62°F48°F62%1010.6 hPa
Novato / Gnoss Field, CA22 mi1.7 hrsWNW 19 G 3010.00 miMostly Cloudy and Breezy59°F48°F68%1012.5 hPa

Wind History from CCR (wind in knots)
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1 day agoS16W116SW6SW6W4W7W5CalmCalmCalmCalmCalmCalmCalmSE3CalmS3S4S3CalmW5W9W9
G14
2 days ago--S8SE13S15S3S5S5S4S10
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SE4SE5S9E4Calm3SW16
G20

Tide / Current Tables for Berkeley, California
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Berkeley
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Tue -- 01:39 AM PDT     6.00 feet High Tide
Tue -- 05:54 AM PDT     Sunrise
Tue -- 08:16 AM PDT     Moonset
Tue -- 08:33 AM PDT     -0.90 feet Low Tide
Tue -- 03:56 PM PDT     4.64 feet High Tide
Tue -- 08:17 PM PDT     Sunset
Tue -- 08:38 PM PDT     2.97 feet Low Tide
Tue -- 11:16 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.35.965.44.32.71.1-0.1-0.8-0.8-0.30.61.72.93.84.44.64.43.93.4333.33.9

Tide / Current Tables for Berkeley Yacht Harbor, California Current
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Berkeley Yacht Harbor
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Tue -- 02:27 AM PDT     -0.00 knots Slack
Tue -- 05:21 AM PDT     -0.33 knots Max Ebb
Tue -- 05:54 AM PDT     Sunrise
Tue -- 08:16 AM PDT     Moonset
Tue -- 08:53 AM PDT     0.00 knots Slack
Tue -- 12:20 PM PDT     0.36 knots Max Flood
Tue -- 04:22 PM PDT     -0.00 knots Slack
Tue -- 06:00 PM PDT     -0.10 knots Max Ebb
Tue -- 08:17 PM PDT     Sunset
Tue -- 08:23 PM PDT     0.00 knots Slack
Tue -- 11:16 PM PDT     Moonrise
Tue -- 11:56 PM PDT     0.24 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.1-0.1-0.2-0.3-0.3-0.2-0.100.20.30.40.40.30.20-0.1-0.1-0.1-000.10.2

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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (19,4,5,8)
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Ground Weather Radar Station Sacramento, 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.