Friday, November16, 2018 L-36.com


Marine Weather and Tides
Napa, 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 6:51AMSunset 4:56PM Friday November 16, 2018 1:55 PM PST (21:55 UTC) Moonrise 1:48PMMoonset 12:02AM Illumination 64% Phase: Waxing Gibbous; Moon at 9 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- 854 Am Pst Fri Nov 16 2018
Today..N winds around 5 kt...becoming nw this afternoon. Hazy and patchy smoke.
Tonight..W winds up to 10 kt. Hazy and patchy smoke.
Sat..NW winds 5 to 15 kt. Hazy and patchy smoke.
Sat night..NW winds 5 to 15 kt. Hazy and patchy smoke.
Sun..NW winds around 5 kt. Hazy and patchy smoke.
Sun night..NW winds around 5 kt.
Mon..E winds around 5 kt.
Tue..S winds around 5 kt.
PZZ500 854 Am Pst Fri Nov 16 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will continue through the weekend and early next week. A mixed moderate northwest swell and light southerly swell will also persist. No significant change in the weather pattern expected until mid week next week at the earliest.


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 161806
afdmtr
area forecast discussion
national weather service san francisco bay area
1006 am pst Fri nov 16 2018

Synopsis Widespread smoke and haze will continue to result in
poor air quality over much of the san francisco bay area through
the weekend. Otherwise, dry weather with mild temperatures are
forecast to persist through early next week. A significant pattern
change appears likely starting around the middle of next week,
with the potential for widespread periodic rainfall during the
second half of the week.

Discussion As of 09:17 am pst Friday... Smoke and poor air
quality will continue to impact the region today, with the bay
area seeing the worst of the impacts. Visibilities are reduced
regionwide with visibilities as low as 1 mile in oakland and 1 to
2 miles at other reporting locations around the bay. Not expecting
much change in smoke coverage across the bay area as offshore
flow continues to drain smoke down the central valley through the
golden gate gap and out over the coastal waters. Coastal areas may
see some minor improvements in air quality with the possibility
for some weak onshore flow this afternoon. However, there is
abundant smoke over the coastal waters so not expecting onshore
flow to improve conditions meaningfully. Smoke and poor air
quality will continue to be an issue through early next week until
a pattern change occurs.

Overnight lows remained cool in valleys last night, especially
across the north bay where low to mid 30s were common. Smoke will
continue to keep high temperatures several degrees cooler across
the bay area than surrounding areas with highs in the mid 60s.

Other areas will see highs in the low-mid 70s. May see an increase
in smoke in our southern regions this afternoon as onshore flow
advects smoky air inland. Dry conditions are expected through
Tuesday. A major pattern change is still on track for the middle
of next week and into the holiday weekend. This will help to
remove smoke and bring rainfall to the area.

Prev discussion As of 02:52 am pst Friday... The main impacts across
the region in the short-term will continue to be smoke, haze and
associated poor air quality as a result of the camp fire inland to
our north. Poor visibility, below 1 1 2 sm at times, is being
reported across the greater san francisco bay area with
temperatures ranging from the middle 30s in our colder inland
valleys to upper 40s near the coast. Given the weak offshore flow
aloft, air quality is not forecast to improve much through the day
with unhealthy to very unhealthy conditions forecast (by the bay
area quality management district) across the bay area while
slightly better conditions are expected over the monterey bay
region.

The forecast models do indicate a slight increase in onshore flow
near the coast this weekend which may help to improve conditions.

May even see areas of low clouds develop over the pacific late
tonight with the potential for coastal intrusion by Saturday
morning. Something that will need to be closely monitored as smoke
may actually get trapped beneath the low level inversion.

Regardless, dry weather conditions will persist along with
temperatures above seasonal averages each afternoon through the
weekend and into early next week. Overnight conditions will be
seasonably cool, especially inland away from the coast.

Forecast confidence continues to increase regarding a major pattern
shift late next week that would bring unsettled weather conditions
to the region. An initial upper level system is forecast to develop
over the eastern pacific and approach the southern california coast
early next week, missing our region. However, the medium range
models are in better agreement with subsequent systems approaching
the region during the second half of the week. The gfs, ECMWF and
canadian are in decent agreement with the potential for widespread
rainfall developing over the region as early as Wednesday.

Additional systems appear likely to impact the region around
thanksgiving and potentially into the following holiday weekend as
well. With this said, timing and strength of each system remains
difficult to pin-point at this time given model-to-model and run-to-
run differences. Regardless, a more active pattern is appearing more
likely late in month which would also help to improve air quality
region-wide.

Aviation As of 10:10 am pst Friday... Widespread impacts from
wildfire smoke, primarily throughout the sf bay area and delta.

Ifr visibility with periods of MVFR ceilings through the day. Weak
onshore push this afternoon may bring slight temporary
improvements later today, however, some areas such as koak could
see further deterioration in visibility as there is plenty of
smoke offshore to pull back inland. Poor slant range visbys
continue. Little relief from smoke through the weekend.

Vicinity of ksfo... MVFR-ifr visibility in smoke, light wind. Poor
to very poor slant range visibility.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR with periods of smoke through the
morning. Onshore wind shift later today will pull offshore smoke
inland, similar to yesterday afternoon, bringing generally MVFR
but possibly ifr visibilities late this afternoon through this
evening.

Marine As of 10:00 am pst Friday... Generally light winds will
continue through the weekend and early next week. A mixed moderate
northwest swell and light southerly swell will also persist. No
significant change in the weather pattern expected until mid week
next week at the earliest.

Mtr watches warnings advisories
Tday None.

Public forecast: st
aviation: drp
marine: drp
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 mi71 min W 1.9 58°F 1016 hPa31°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 17 mi38 min E 14 G 16 60°F 1014.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 20 mi44 min NNE 2.9 G 4.1 56°F 57°F1015.8 hPa38°F
PCOC1 - 9415144 - Port Chicago, CA 21 mi38 min NE 8 G 8.9 58°F 57°F1015.6 hPa
RCMC1 - 9414863 - Richmond, CA 27 mi38 min 57°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi38 min SSW 1 G 1 65°F 1015.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi38 min SSE 2.9 G 4.1 60°F 1015.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 30 mi45 min NNW 7 58°F 1015 hPa
OBXC1 34 mi38 min 58°F 43°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 34 mi38 min NW 7 G 8.9 57°F 1015.1 hPa
PXSC1 35 mi44 min 62°F 35°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 35 mi38 min N 1.9 G 2.9 58°F 1014.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 35 mi44 min NW 4.1 G 5.1
LNDC1 35 mi38 min NW 4.1 G 5.1 60°F 1015.1 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi44 min NNE 5.1 G 6 60°F 56°F1015.3 hPa
AAMC1 - 9414750 - Alameda, CA 37 mi44 min SSW 1.9 G 2.9 58°F 58°F1015.4 hPa
46237 - San Francisco Bar, CA (142) 40 mi56 min 55°F6 ft
PRYC1 - 9415020 - Point Reyes, CA 42 mi38 min S 2.9 G 4.1 55°F1014.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 48 mi36 min WNW 7.8 G 9.7 57°F 57°F1015.6 hPa

Wind History for Martinez-Amorco Pier, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Napa, Napa County Airport, CA6 mi62 minSW 31.25 miHaze Smoke61°F32°F34%1014.8 hPa
Petaluma Municipal Airport, CA17 mi61 minN 01.50 miFair with Haze61°F33°F36%1015.9 hPa
Novato / Gnoss Field, CA18 mi81 minVar 41.25 miFair with Haze61°F33°F36%1015.9 hPa
Vacaville Nut Tree Airport, CA18 mi63 minN 01.50 miOvercast with Haze64°F30°F28%1016.3 hPa
Fairfield / Travis Air Force Base, CA19 mi2 hrsN 02.00 miHaze Smoke57°F29°F34%1017.6 hPa

Wind History from APC (wind in knots)
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Last 24hrE9SE9SE6SE9SE5CalmNE5N3N3N5N4N5CalmCalmCalmN4NE3N6N5N33SW4W5SW3
1 day agoSW4SW6SW3Calm--E4CalmCalmNE3N6N6CalmN3N5N6E3N3CalmCalmCalmW4E8E10E12
2 days agoE5E6E7SE6E8NE3NE5CalmNW4CalmNE4CalmNW4CalmCalmN3N4N3N4N3S3SW5W53

Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Fri -- 12:02 AM PST     Moonset
Fri -- 02:25 AM PST     0.78 feet Low Tide
Fri -- 06:51 AM PST     Sunrise
Fri -- 09:19 AM PST     6.31 feet High Tide
Fri -- 01:48 PM PST     Moonrise
Fri -- 03:45 PM PST     2.55 feet Low Tide
Fri -- 04:55 PM PST     Sunset
Fri -- 08:20 PM PST     5.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21.20.80.91.52.53.74.95.86.36.25.74.943.22.72.63.1455.65.55.14.2

Tide / Current Tables for Mare Island Strait, So Vallejo, San Pablo Bay, California Current
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Mare Island Strait
Click for Map
Fri -- 12:02 AM PST     Moonset
Fri -- 02:12 AM PST     0.00 knots Slack
Fri -- 06:15 AM PST     1.54 knots Max Flood
Fri -- 06:50 AM PST     Sunrise
Fri -- 09:20 AM PST     -0.00 knots Slack
Fri -- 11:27 AM PST     -1.41 knots Max Ebb
Fri -- 01:47 PM PST     Moonrise
Fri -- 02:45 PM PST     0.00 knots Slack
Fri -- 04:56 PM PST     Sunset
Fri -- 05:41 PM PST     0.92 knots Max Flood
Fri -- 08:16 PM PST     -0.00 knots Slack
Fri -- 10:52 PM PST     -1.83 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.5-0.9-0.20.51.11.41.51.410.3-0.7-1.3-1.4-1.1-0.50.10.60.90.90.70.2-0.8-1.6-1.8

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 (16,3,4,5)
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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.