Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Napa, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:56AMSunset 7:30PM Tuesday March 28, 2017 4:53 AM PDT (11:53 UTC) Moonrise 6:36AMMoonset 7:27PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 251 Am Pdt Tue Mar 28 2017
Today..NW winds 5 to 15 kt.
Tonight..NW winds 5 to 15 kt.
Wed..W winds 5 to 15 kt.
Wed night..W winds 10 to 20 kt.
Thu..NW winds 5 to 15 kt.
Fri..N winds 15 to 25 kt...decreasing to 5 to 15 kt.
Sat..W winds 10 kt.
PZZ500 251 Am Pdt Tue Mar 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A long period northwest swell will move through the coastal waters on Tuesday. Moderate and gusty northwest winds will continue for the next several days as a strong surface pressure gradient builds over the region.

7 Day Forecast for Marine Location Near Napa, CA
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location: 38.3, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 280955
afdmtr
area forecast discussion
national weather service san francisco bay area
255 am pdt Tue mar 28 2017

Synopsis A ridge of high pressure will build into our region
and provide warmer weather the next couple of days. At the same
time locally breezy northwesterly winds will continue. Cooler
conditions are likely on Thursday as a system moves through
northern california. The ridge will rebuild by the end of the
week leading to another increase in temperatures.

Discussion As of 3:00 am pdt Tuesday... Although temperatures
will be warmer today as a ridge of high pressure builds into our
region, it won't feel very warm as breezy northwesterly conditions
can be expected from later this morning to the evening. In fact,
surface gradients are still impressive at this hour with sfo-acv
at 5.5 mb. Winds of 15 to 25 mph can be expected in most spots
with local gusts over 30 mph likely. Temperatures will generally
be in the 60s to lower 70s at the coast with 70s inland.

Temperatures will see another 3 to 5 degree increase in most spots
for Wednesday as 925 mb values increase another 2c.

On Thursday an inside slider will move from northern california
down into nevada. Due to the track virtually all of the showers
should stay to our north and east. However, models do keep the
outside shot of light rain hitting higher elevation locations.

Kept a few mentions of pops around 20% for those spots. Bigger
impact will be another round of breezy conditions followed by
cooler temperatures. Highs will drop back into the upper 50s to
the upper 60s.

The ridge will rebuild and move back to our region starting on
Friday and continuing into the weekend. Some disagreement between
the models as far as how much warming will occur. ECMWF is running
3 to 7 degree warmer than the gfs. Based on its better
verification, the forecast was nudged toward the higher values.

Longer range guidance favors dry conditions through at least the
middle of next week. Some signs after that we will flip back to a
wetter pattern.

Aviation As of 9:30 pm pdt Monday... Moderate to high confidence
vfr tonight and Tuesday under a drier pattern and high pressure.

A moderately strong acv-sfo pressure gradient along with vertical
momentum transfer of winds from the lower levels to the surface
will help keep areas of gusty w-nw winds going tonight into Tuesday.

Lower to mid level warming is underway, this evening's 00z oakland
sounding already showed a temperature inversion based near 7 thousand
feet (near 800 mb level). It should be a little less windy Tuesday.

Vicinity of ksfo... Occasional gusty w-nw winds this evening and
overnight.VFR.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Gusty w-nw winds becoming lighter to near
10 knots tonight. Moderate to high confidenceVFR tonight into
Tuesday.

Marine As of 8:51 pm pdt Monday... Moderate and gusty northwest
winds will persist through midweek as a strong surface pressure
gradient builds over the region. In addition, a building northwest
swell will move through the coastal waters through late week. Moderate
to gusty northwest winds will then likely continue through late
week.

Mtr watches/warnings/advisories
Tday Sca... Pt arena to pt reyes 0-10 nm
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 pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
sca... Mry bay until 3 am
sca... Mry bay from 1 pm
public forecast: bell
aviation: canepa
marine: rgass
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 15 mi68 min WNW 6 48°F 1022 hPa44°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 17 mi59 min W 5.1 G 7 53°F 1023.2 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 20 mi53 min WNW 7 G 11 51°F 57°F1023.3 hPa (-0.6)49°F
UPBC1 20 mi53 min WNW 11 G 16
PCOC1 - 9415144 - Port Chicago, CA 21 mi53 min SSW 2.9 G 8 48°F 56°F1022.9 hPa (-0.5)
RCMC1 - 9414863 - Richmond, CA 27 mi53 min N 4.1 G 6 54°F 57°F1023.1 hPa (-0.6)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi53 min N 4.1 G 8 54°F 1023.6 hPa (-0.6)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi53 min WNW 8.9 G 13 54°F 1022.4 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 34 mi65 min NNE 8.9 G 12 53°F 1023.5 hPa
OBXC1 34 mi53 min 54°F 46°F
PXSC1 35 mi53 min 55°F 47°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 35 mi53 min N 8.9 G 12
LNDC1 35 mi59 min N 7 G 8.9 53°F 1023.3 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi53 min S 2.9 G 2.9 50°F 56°F1023.7 hPa (-0.7)
AAMC1 - 9414750 - Alameda, CA 37 mi53 min NNW 8.9 G 13 53°F 59°F1023.6 hPa (-0.7)
46237 - San Francisco Bar, CA (142) 40 mi53 min 55°F7 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 48 mi63 min NW 14 G 18 54°F 55°F9 ft1023.5 hPa (-0.7)

Wind History for Martinez-Amorco Pier, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Napa, Napa County Airport, CA6 mi59 minNW 510.00 miFair47°F42°F83%1022.2 hPa
Novato / Gnoss Field, CA18 mi58 minNNW 11 G 1710.00 miFair52°F41°F67%1023.4 hPa
Fairfield / Travis Air Force Base, CA19 mi55 minW 810.00 miFair50°F44°F82%1023.7 hPa

Wind History from APC (wind in knots)
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Last 24hrW8NW4CalmW3N53CalmCalmNW11NW13
G30
W13W15W14W14W18NE4W9E3NW6W3SW3SE3CalmNW5
1 day agoW4W6SW3CalmSW3CalmCalmS7S7SW10SW10SW12SW13SW14SW13S12W11
G19
W15W11W11W9W8W8W8
2 days agoCalmCalmCalmCalmCalmS33SW6SW6S8SW9SW8W13W15W11W13W14W10W7W10W5W4W4W8

Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Tue -- 02:45 AM PDT     7.15 feet High Tide
Tue -- 06:59 AM PDT     Sunrise
Tue -- 07:36 AM PDT     Moonrise
Tue -- 09:09 AM PDT     0.40 feet Low Tide
Tue -- 03:04 PM PDT     7.02 feet High Tide
Tue -- 07:29 PM PDT     Sunset
Tue -- 08:26 PM PDT     Moonset
Tue -- 09:23 PM PDT     0.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.15.76.87.16.65.33.72.10.90.40.81.93.55.26.576.75.74.12.51.20.50.61.7

Tide / Current Tables for Mare Island Strait, So Vallejo, San Pablo Bay, California Current
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Mare Island Strait
Click for Map
Tue -- 02:32 AM PDT     -0.00 knots Slack
Tue -- 04:50 AM PDT     -2.05 knots Max Ebb
Tue -- 06:59 AM PDT     Sunrise
Tue -- 07:36 AM PDT     Moonrise
Tue -- 08:46 AM PDT     0.00 knots Slack
Tue -- 11:55 AM PDT     1.58 knots Max Flood
Tue -- 02:58 PM PDT     -0.00 knots Slack
Tue -- 05:04 PM PDT     -1.96 knots Max Ebb
Tue -- 07:28 PM PDT     Sunset
Tue -- 08:26 PM PDT     Moonset
Tue -- 08:46 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.20.5-0.7-1.8-2.1-1.9-1.4-0.70.20.91.41.61.40.8-0-1.4-2-1.8-1.4-0.70.211.7

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map

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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.