Monday, July22, 2019 L-36.com


Marine Weather and Tides
Tamalpais-Homestead Valley, CA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:03AMSunset 8:29PM Monday July 22, 2019 3:34 PM PDT (22:34 UTC) Moonrise 10:57PMMoonset 10:22AM Illumination 67% Phase: Waning Gibbous; Moon at 21 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- 232 Pm Pdt Mon Jul 22 2019
.small craft advisory in effect until 9 pm pdt this evening...
Rest of today..SW winds 10 to 20 kt with gusts up to 25 kt.
Tonight..SW winds 10 to 15 kt.
Tue..SW winds 10 to 15 kt with gusts up to 25 kt.
Tue night..SW winds 5 to 10 kt.
Wed..SW winds 10 to 15 kt with gusts up to 25 kt.
Wed night..SW winds 10 to 15 kt.
Thu..SW winds 15 to 20 kt with gusts up to 25 kt.
Fri..SW winds 10 to 15 kt.
PZZ500 232 Pm Pdt Mon Jul 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Breezy northwest winds will continue at times through Tuesday over the coastal waters. Winds will increase over the waters and become gusty Tuesday night and Wednesday as high pressure builds into the pacific northwest and northern california. Light southerly swell coupled with short period wind waves will continue through the week.


7 Day Forecast for Marine Location Near Tamalpais-Homestead Valley, CA
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location: 37.89, -122.57     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 222055
afdmtr
area forecast discussion
national weather service san francisco bay area
155 pm pdt Mon jul 22 2019

Synopsis A gradual warming trend will continue through midweek,
especially across the interior. This will lead to seasonably warm
temperatures inland while coastal areas remain mild under the
influence of the marine layer as onshore flow persists.

Discussion As of 01:55 pm pdt Monday... Satellite imagery shows
low clouds along much of the coast with the marine layer situated
at around 1000-1200 ft agl. Temperatures across the region this
afternoon are about 5 to 10 degrees warmer than this time
yesterday as high pressure builds over the four corners. Coastal
areas are currently in the upper 60s to low 70s while inland areas
are in the mid 80s to low 90s. Expect a few additional degrees of
warming this afternoon before temperatures begin to cool off for
the evening. The latest run of the 12z NAM remains consistent in
showing an increase in mid upper level moisture over eastern and
southern california as well as increased mid upper level
instability this afternoon evening. Any resulting high based
convection that develops is still expected to remain outside of
our forecast area with only an increase in mid upper level clouds
over the southeastern portion of the region. Stratus offshore will
move inland once again tonight with patchy fog along the coast
possible late tonight and into tomorrow morning.

This week's warming trend will stall tomorrow as a mid upper low
currently over the eastern pacific shifts northeastward while its
associated trough moves into the pacific northwest. Warming will
then continue over the interior on Wednesday as high pressure over
the four corners strengthens and builds westward into california.

Inland locations will see more widespread 90s mid-week with
isolated locations reaching 100 degrees. Persistent onshore flow
will likely keep a shallow marine layer in place resulting in
continued night morning low clouds and patchy fog along the coast.

This will also act to keep highs for coastal areas in the mid 60s
to mid 70s. High pressure to our east will continue to be the
main driver of our weather through the end of the week and into
the upcoming weekend. This will keep seasonably warm conditions
across the interior with temperatures at or just above seasonal
averages while coastal areas remain relatively mild thanks to the
influence of the marine layer.

Aviation As of 10:58 am pdt Monday... A shallow marine layer
with a depth of around 1200-1500 feet and building high pressure
has allowed clouds to peel back to the coastline this morning.VFR
conditions will prevail this afternoon at the TAF sites. Onshore
winds will increase this afternoon to around 10-15 kt most sites.

The marine layer will remain compressed through tonight as high
pressure continues to build overhead. For tonight and Tuesday
morning, expect stratus coverage similar to this morning with
mainly lifr ifr where clouds develop. Shallow depth should once
again prevent clouds from intruding too far into inland valleys.

Somewhat lower confidence on development around sf bay, but some
cigs in the vicinity are likely to develop overnight.

Vicinity of ksfo...VFR this afternoon and evening. Wnw winds
increasing this afternoon and early evening to 15-20 kt. For
tonight and Tuesday morning, moderate confidence on timing and
extent of stratus formation. May see a similar scenario to this
morning where the terminal remainedVFR and some CIGS developed
over the approach. Will continue to monitor and update as details
become more clear.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR conditions this afternoon. Onshore
winds increasing this afternoon to around 10-15 kt. Ifr cigs
likely to return around 03-04z this evening with conditions
deteriorating to lifr overnight.

Marine As of 08:42 am pdt Monday... Gusty northwest winds will
continue over the northern coastal waters as high pressure builds
into the pacific northwest and northern california. Light
southerly swell coupled with short period wind waves will continue
through the week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay until 9 pm
public forecast: as
aviation: st
marine: st
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIBC1 - Tiburon Pier, San Francisco Bay, CA 7 mi71 min ESE 6 69°F 1015 hPa
46237 - San Francisco Bar, CA (142) 8 mi64 min 60°F3 ft
FTPC1 - 9414290 - San Francisco, CA 8 mi52 min WSW 6 G 14 58°F 60°F1015.2 hPa
RCMC1 - 9414863 - Richmond, CA 9 mi46 min 66°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 11 mi46 min W 8.9 G 12 66°F 1013.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi46 min SSW 9.9 G 14 63°F 1014.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi52 min WNW 7 G 8.9
OBXC1 14 mi46 min 63°F 60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi46 min WNW 11 G 13 61°F 1014.6 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi52 min W 7 G 8 69°F 70°F1015 hPa
LNDC1 17 mi46 min N 5.1 G 8 69°F 1014.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi34 min WNW 7.8 G 12 55°F 57°F1016.5 hPa (-0.6)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 20 mi46 min WSW 11 G 13 73°F 1013.3 hPa
PRYC1 - 9415020 - Point Reyes, CA 23 mi46 min 59°F1015.6 hPa
UPBC1 26 mi46 min NW 13 G 16
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi52 min NW 15 G 16 81°F 72°F1013.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 30 mi46 min W 12 G 14 80°F 70°F1013 hPa
RTYC1 - 9414523 - Redwood City, CA 33 mi46 min NNW 11 G 13 72°F 75°F1014.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 36 mi109 min W 8.9 88°F 1013 hPa58°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi52 min NW 9.9 G 13 82°F 1012.6 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 46 mi34 min NW 7.8 G 9.7 52°F1015.7 hPa (-0.8)
46214 - Point Reyes, CA (029) 48 mi34 min 53°F6 ft

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA18 mi39 minN 1310.00 miFair88°F60°F40%1013.2 hPa
San Francisco, San Francisco International Airport, CA22 mi38 minWNW 1510.00 miA Few Clouds74°F55°F52%1014 hPa
Oakland, Metro Oakland International Airport, CA23 mi41 minWNW 1310.00 miA Few Clouds76°F57°F54%1014.4 hPa

Wind History from DVO (wind in knots)
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N10N11N12N10CalmN9N6N4N4N5CalmCalmNW5CalmN4N6N5355NE5NE11N12
1 day agoSW7
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N13NW15NW12N11N10N9N5NW6N6NW4N5N4N5N5N65CalmCalm4NE5NE5N11N11
2 days agoSW10SW9NW12N12CalmN4N5CalmCalmCalmCalmSW3CalmCalmNW4W4CalmCalmCalm45N104
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Tide / Current Tables for Sausalito, Corps of Engineers Dock, San Francisco Bay, California
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Sausalito
Click for Map
Mon -- 03:21 AM PDT     4.67 feet High Tide
Mon -- 06:04 AM PDT     Sunrise
Mon -- 10:01 AM PDT     0.65 feet Low Tide
Mon -- 11:22 AM PDT     Moonset
Mon -- 04:57 PM PDT     4.95 feet High Tide
Mon -- 08:27 PM PDT     Sunset
Mon -- 10:55 PM PDT     2.54 feet Low Tide
Mon -- 11:56 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.33.84.34.64.64.13.42.41.50.90.70.91.52.33.34.24.854.84.33.632.72.5

Tide / Current Tables for Richardson Bay Entrance, San Francisco Bay, California Current
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Richardson Bay Entrance
Click for Map
Mon -- 01:12 AM PDT     -0.00 knots Slack
Mon -- 05:27 AM PDT     -0.69 knots Max Ebb
Mon -- 06:04 AM PDT     Sunrise
Mon -- 08:15 AM PDT     0.00 knots Slack
Mon -- 10:42 AM PDT     0.83 knots Max Flood
Mon -- 11:22 AM PDT     Moonset
Mon -- 02:28 PM PDT     -0.01 knots Slack
Mon -- 06:04 PM PDT     -0.52 knots Max Ebb
Mon -- 08:27 PM PDT     Sunset
Mon -- 08:56 PM PDT     0.00 knots Slack
Mon -- 10:56 PM PDT     0.53 knots Max Flood
Mon -- 11:56 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.1-0.2-0.4-0.6-0.7-0.6-0.4-0.10.30.70.80.70.50.2-0.1-0.3-0.5-0.5-0.4-0.200.40.5

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 (18,4,5,8)
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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.