Sunday, February17, 2019 L-36.com


Marine Weather and Tides
El Granada, 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 6:55AMSunset 5:52PM Sunday February 17, 2019 8:47 PM PST (04:47 UTC) Moonrise 3:48PMMoonset 5:32AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 604 Pm Pst Sun Feb 17 2019
.small craft advisory in effect through Monday evening...
Tonight..N winds 15 to 25 kt...diminishing to 10 to 20 kt after midnight. Wind waves 3 to 5 ft. NW swell 6 to 9 ft at 12 seconds.
Washingtons birthday..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. NW swell 6 to 9 ft at 18 seconds.
Mon night..N winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. NW swell 5 to 8 ft at 17 seconds.
Tue..N winds 5 to 15 kt with gusts up to 25 kt. Wind waves 2 ft or less. NW swell 5 to 8 ft at 17 seconds.
Tue night..NW winds 20 to 30 kt. Wind waves 3 to 4 ft. NW swell 4 to 7 ft at 17 seconds.
Wed..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 4 ft. NW swell 5 to 8 ft.
Wed night..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 5 ft. NW swell 7 to 10 ft.
Thu..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 5 ft. NW swell 7 to 10 ft.
Fri..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 8 to 9 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 6 to 9 ft with a dominant period of 12 seconds. Across the bar...combined seas 7 to 10 ft with a dominant period of 12 seconds. Maximum ebb current of 2.0 kt at 03:07 am Monday and 3.4 kt at 03:01 pm Monday.
PZZ500 604 Pm Pst Sun Feb 17 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate and gusty winds are forecast to prevail over the coastal waters through the evening hours and overnight. The northwest swell that arrived late Friday and Saturday will continue to gradually diminish overnight. A second long period northwest swell train is set to arrive during the week and will bring with it more modest swell heights.


7 Day Forecast for Marine Location Near El Granada, CA
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location: 37.5, -122.48     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 172329
afdmtr
area forecast discussion
national weather service san francisco bay area
329 pm pst Sun feb 17 2019

Synopsis Scattered showers will continue through this afternoon
mainly south of the san francisco bay area. Clearing skies will
allow for cold minimum temperatures tonight and into the upcoming
week. Dry weather is expected for Monday and Tuesday with a
slight chance of showers returning by the middle of the week.

Temperatures will remain below normal.

Discussion As of 2:00 pm pst Sunday... Upper level low over
nevada is bringing a cold northerly flow to the area. Scattered
showers have developed over the higher terrain from the east bay
hills south. A couple of spotters have reported small hail in the
santa cruz mountains. Precip could still fall as snow above 3000
feet.

These showers will be ending tonight as drier air aloft moves
into the area. As skies clear and winds decrease patchy fog is
possible in the north bay valleys. Lows tonight will be dropping
into the mid to upper 20s in the coldest interior valleys with
mid to upper 30s around the bay. An upper level ridge moving over
the area will bring dry weather Monday and Tuesday. The airmass
will start to moderate but lower humidities will allow for another
cold night Monday night with temperatures similar to Sunday
night. Highs Monday and Tuesday will be in the 50s across the
lowlands which is still about 5 degrees below normal.

The next upper level trough will drop into the pacific northwest
on Wednesday. This system is further inland than the previous
systems that have moved through here so it will have less moisture
to work with. Only a slight chance of showers is forecast with any
rain amounts under one-tenth of an inch. It will bring in a
reinforcement of cold air so snow levels will be very low again.

Thursday and Friday look to be dry as there is good model
agreement. The flow will become more westerly which should put an
end to our cold wave. Medium range models indicate a system from
the west possibly affecting our area late next weekend.

Aviation As of 03:29 pm pst Sunday... For 00z tafs. Scattered
showers to remain in the vicinity until this evening. After that,
dry conditions expected through the rest of the forecast period.

Vfr prevailing with the exception of possible patchy fog in the
morning in the north bay. Sct to bkn CIGS will continue into this
evening between 3500-5000 ft agl. Skies expected to gradually
clear overnight and through tomorrow morning. Gusty onshore winds
continue this afternoon and into the early evening with gusts
generally around 20-25 kt with isolated gusts up to 30 kt. Winds
forecast to subside overnight.

Vicinity of ksfo...VFR prevailing with sct to bkn CIGS 3500-5000
ft into this evening before conditions are expected to gradually
clear through the morning. Showers to diminish this evening.

Breezy westerly winds into the early evening with gusts 20-25 kt
and isolated gusts up to 30 kt. Winds forecast to ease overnight.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR with scattered showers into this
evening. Sct-bkn cogs 3,500-5,000 ft agl this afternoon and
evening. Onshore winds remain breezy with gusts 20-25 kt. Winds
forecast to ease overnight and turn more SE by the early morning.

Marine As of 02:18 pm pst Sunday... Moderate and gusty winds
are forecast to prevail over the coastal waters through the
evening hours and overnight. The northwest swell that arrived late
Friday and Saturday will continue to gradually diminish
overnight. A second long period northwest swell train is set to
arrive during the week and will bring with it more modest swell
heights.

Mtr watches warnings advisories
Tngt Sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Sf bay until 6 pm
sca... Mry bay until 6 pm
public forecast: W pi
aviation: as
marine: rowe
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi35 min ESE 4.1 G 6 45°F 53°F1018.7 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi35 min WNW 5.1 G 8.9 47°F 53°F1018.4 hPa
AAMC1 - 9414750 - Alameda, CA 21 mi35 min WNW 2.9 G 5.1 48°F 53°F1018.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi29 min WNW 5.1 G 8 48°F 1017.1 hPa
PXSC1 21 mi35 min 50°F 39°F
OBXC1 22 mi29 min 48°F 40°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi35 min NNW 7 G 9.9
LNDC1 23 mi35 min NNE 1 G 1.9 48°F 1018.1 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi35 min N 9.9 G 13 49°F 1018.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi27 min NNW 21 G 25 51°F 55°F1018.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi36 min NW 8.9 46°F 1018 hPa
RCMC1 - 9414863 - Richmond, CA 29 mi29 min 52°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi29 min N 8.9 G 13 49°F 1018.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi29 min SE 4.1 G 5.1 45°F 1018 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi35 min SW 1.9 G 1.9 44°F 50°F1018.3 hPa44°F
UPBC1 42 mi29 min Calm G 2.9
PRYC1 - 9415020 - Point Reyes, CA 43 mi35 min 54°F1018.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 45 mi35 min S 5.1 G 6 43°F 50°F1018.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 49 mi29 min W 2.9 G 4.1 45°F 1018.1 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA10 mi51 minN 610.00 miPartly Cloudy48°F37°F66%1018 hPa
San Carlos Airport, CA12 mi1.9 hrsWNW 710.00 miA Few Clouds48°F39°F71%1017.6 hPa
Palo Alto Airport, CA19 mi60 minVar 410.00 miMostly Cloudy43°F37°F81%1018.6 hPa
Oakland, Metro Oakland International Airport, CA20 mi54 minN 010.00 miA Few Clouds46°F36°F68%1018.6 hPa
Hayward, Hayward Air Terminal, CA22 mi53 minENE 310.00 miFair46°F34°F63%1019 hPa
Mountain View, Moffett Field, CA23 mi1.9 hrsWNW 610.00 miA Few Clouds48°F37°F68%1018 hPa

Wind History from HAF (wind in knots)
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1 day agoSW5W4CalmNE4NE4CalmNE4NE3NE3NE3CalmCalmNE3CalmCalmCalmCalmSE3SE6SE9SE9SE10--SE9
2 days agoNW14
G18
NW10NW12N10N9N9NW9N7N4N5CalmCalmNE3CalmCalmE5CalmCalmS4S7SE7SW4--S5

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
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Sun -- 02:04 AM PST     2.66 feet Low Tide
Sun -- 05:31 AM PST     Moonset
Sun -- 06:57 AM PST     Sunrise
Sun -- 07:58 AM PST     6.45 feet High Tide
Sun -- 03:04 PM PST     -1.08 feet Low Tide
Sun -- 03:47 PM PST     Moonrise
Sun -- 05:51 PM PST     Sunset
Sun -- 09:58 PM PST     4.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.42.92.72.93.54.55.46.26.46.15.13.61.90.3-0.7-1.1-0.801.22.53.74.64.94.6

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Sun -- 02:24 AM PST     -1.02 knots Max Ebb
Sun -- 05:05 AM PST     0.00 knots Slack
Sun -- 05:30 AM PST     Moonset
Sun -- 06:56 AM PST     Sunrise
Sun -- 07:49 AM PST     1.57 knots Max Flood
Sun -- 10:57 AM PST     -0.01 knots Slack
Sun -- 02:38 PM PST     -2.22 knots Max Ebb
Sun -- 03:46 PM PST     Moonrise
Sun -- 05:50 PM PST     Sunset
Sun -- 06:04 PM PST     0.00 knots Slack
Sun -- 08:57 PM PST     2.20 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.7-1-0.9-0.6-0.10.71.41.61.30.8-0-0.9-1.6-2.1-2.2-1.8-1-0.11.11.92.221.4

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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Wind Forecast for San Francisco/Monterey Bay Area, CA (23,6,7,8)
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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.