Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Mountain View, 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 Thursday May 23, 2019 7:42 AM PDT (14:42 UTC) Moonrise 11:47PMMoonset 9:02AM Illumination 79% Phase: Waning Gibbous; Moon at 19 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- 230 Am Pdt Thu May 23 2019
.small craft advisory in effect from this evening through late tonight...
Today..S winds 5 to 10 kt...becoming sw 5 to 15 kt this afternoon.
Tonight..SW winds 15 to 25 kt with gusts up to 30 kt.
Fri..SW winds 5 to 15 kt with gusts up to 25 kt.
Fri night..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
Sat night..W winds 15 to 25 kt with gusts up to 35 kt.
Sun..W winds 10 to 20 kt with gusts up to 25 kt.
Memorial day..SW winds 5 to 15 kt.
PZZ500 230 Am Pdt Thu May 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure over the california interior will move into the great basin on Thursday. Strong northwest winds on the back side of the low including gale force winds over the northern waters will decrease Thursday night. Strong northwest winds will redevelop over the coastal waters Friday night through the weekend. A large northwest swell will persist through the end of the week and into the weekend particularly over the northern and outer waters.


7 Day Forecast for Marine Location Near Mountain View, CA
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location: 37.45, -122.06     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 231205
afdmtr
area forecast discussion
national weather service san francisco bay area
505 am pdt Thu may 23 2019

Synopsis Temperatures will remain near to slightly below seasonal
averages through late week with mainly dry weather conditions.

Unseasonably cool and unsettled conditions return late in the
weekend with chances for rain showers as a weather system drops down
the west coast.

Discussion As of 03:26 am pdt Thursday... High clouds continue
to stream over the region this morning as the core of an upper
level low spins over western arizona. With the main trough axis
also well inland, low clouds have returned to many coastal areas
from the san francisco peninsula down along the central coast
penetrating inland into the salinas valley. With this and a
moderate air mass aloft, temperatures are slight warmer compared
to previous mornings. Looking for mainly dry conditions this
afternoon with temperatures warming into the 60s near the coast to
70s inland. However, cannot rule out an isolated shower or two
developing over the gabilan range this afternoon during peak
daytime heating as a weak disturbance rotates along the western
periphery of the trough.

Little change is anticipated for Friday and Saturday as a broad
trough remains over the western portion of the country. Should see
night morning clouds near the coast working locally inland before
giving way to partly cloudy conditions in the afternoon. Again,
temperatures will remain slightly below seasonal averages with 60s
near the coast to 70s inland during the afternoon hours with
Saturday being slightly cooler than Friday.

Another mid upper level low is then forecast to drop southward out
of alaska and british columbia late this weekend. As the low travels
down the west coast chances for rain showers develop over the region
by Sunday. Systems such as this typically are moisture starved, so
widespread rainfall is unlikely. However, isolated to potentially
scattered showers cannot be ruled out late in the weekend and
potentially into early Monday. While a total "wash out" is unlikely
for the memorial day holiday weekend, unsettled conditions will
continue with unseasonably cool temperatures and potential for
lingering showers. Warmer and drier weather conditions are forecast
for the middle part of next week as the mid upper level trough
finally shifts inland.

Aviation As of 05:05 am pdt Thursday... Strong northerly
gradient continues with limited intrusion of stratus inland. Areas
to the north of the golden gate and inland locations have
remained mainlyVFR overnight while points south near the coast
have seen extensive MVFR ifr cigs. Latest satellite and surface
observational trends indicate stratus expanding around the
southern sf bay as high clouds decrease. Stratus may at times
bring MVFR CIGS to sfo and oak through mid to late morning.

Onshore winds expected this afternoon at 10-15 kt withVFR
conditions this afternoon through early evening.

Vicinity of ksfo... A patch of MVFR CIGS have developed over the
terminal early this morning. Occasional MVFR expected to affect
the terminal through 16z. West-northwest winds will strengthen
this afternoon with speeds of 10-15 kt. Winds may gain a
southwesterly component this evening continuing overnight.VFR
expected through the evening with MVFR returning overnight.

Sfo bridge approach... Similar to ksfo, except satellite shows less
coverage of stratus over the approach. Stratus may fill in with
MVFR CIGS at times through mid morning.

Monterey bay terminals... Ifr this morning with patchy drizzle
observed at the terminals. Expect ifr conditions to improve to
MVFR by late morning, and thenVFR early this afternoon. MVFR cigs
returning early this evening.

Marine As of 03:26 am pdt Thursday... Low pressure over the
california interior will move into the great basin on Thursday.

Strong northwest winds on the back side of the low including gale
force winds over the northern waters will decrease Thursday night.

Strong northwest winds will redevelop over the coastal waters
Friday night through the weekend. A large northwest swell will
persist through the end of the week and into the weekend
particularly over the northern and outer waters.

Mtr watches warnings advisories
Tday High surf advisory... Caz006-505-509-529-530
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
glw... Pt arena to pigeon pt 10-60 nm until 3 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
sca... Mry bay until 3 pm
public forecast: rgass
aviation: st
marine: st
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 9 mi43 min ESE 1.9 G 2.9 56°F 64°F1009.4 hPa (+0.4)
AAMC1 - 9414750 - Alameda, CA 26 mi49 min ESE 4.1 G 4.1 56°F 62°F1008.9 hPa
LNDC1 27 mi43 min SSE 8.9 G 12 56°F 1008.6 hPa (+0.4)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 28 mi49 min S 2.9 G 5.1
OBXC1 29 mi43 min 56°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 29 mi43 min S 2.9 G 4.1 56°F 1008.7 hPa (+0.5)
PXSC1 30 mi43 min 57°F 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 30 mi43 min SSE 5.1 G 8 55°F 1007.6 hPa (+0.4)
FTPC1 - 9414290 - San Francisco, CA 33 mi49 min Calm G 4.1 54°F 58°F1008.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 35 mi43 min SE 8 G 11 57°F 1008.9 hPa (+0.4)
46237 - San Francisco Bar, CA (142) 38 mi43 min 58°F10 ft
RCMC1 - 9414863 - Richmond, CA 38 mi49 min SSE 5.1 G 8 57°F 60°F1008.3 hPa
UPBC1 41 mi43 min WNW 5.1 G 7
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi49 min SW 1.9 G 4.1 59°F 62°F1007.9 hPa59°F
PCOC1 - 9415144 - Port Chicago, CA 42 mi43 min SSW 8.9 G 12 56°F 62°F1007.9 hPa (+0.5)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 42 mi43 min WNW 8.9 G 12 60°F 1007 hPa (+0.5)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi43 min WSW 4.1 G 6 58°F 1007.8 hPa (+0.4)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi43 min NW 19 G 25 54°F 55°F1009.1 hPa (-0.0)
MLSC1 - Moss Landing, South Harbor, CA 47 mi36 min SW 5.1 G 16 55°F 1010.3 hPa53°F
ELXC1 - Elkhorn Slough Reserve, CA 47 mi118 min SW 6 55°F 1009 hPa53°F
46092 - MBM1 48 mi90 min W 9.7 55°F 57°F1009.2 hPa (+0.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 49 mi53 min NW 16 G 19 55°F 57°F15 ft1009.4 hPa (+0.8)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA1 mi47 minVar 310.00 miFair56°F51°F84%1009.3 hPa
Palo Alto Airport, CA4 mi56 minVar 510.00 miMostly Cloudy54°F51°F94%1009.1 hPa
San Jose, San Jose International Airport, CA9 mi50 minSSE 69.00 miMostly Cloudy55°F53°F93%1008.7 hPa
San Carlos Airport, CA11 mi52 minN 05.00 miFog/Mist55°F51°F88%1009.1 hPa
Hayward, Hayward Air Terminal, CA15 mi49 minN 08.00 miOvercast57°F53°F87%1009.7 hPa
Oakland, Metro Oakland International Airport, CA19 mi50 minSSW 85.00 miFog/Mist57°F52°F83%1008.8 hPa
San Francisco, San Francisco International Airport, CA20 mi47 minWNW 49.00 miMostly Cloudy54°F51°F90%1008.7 hPa
Livermore, Livermore Municipal Airport, CA21 mi50 minN 04.00 miFog/Mist54°F53°F97%1008.3 hPa
Half Moon Bay Airport, CA24 mi48 minNNW 63.00 miFog/Mist54°F51°F94%1009.5 hPa

Wind History from NUQ (wind in knots)
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Last 24hrW6NW7NW104NW10N116NW6
G17
N15N12NW96NE8N8N8NE4E4NE3SE4CalmSE3CalmCalm3
1 day ago3CalmNW9
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2 days agoW3CalmN3N7N9N10W7N12
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Tide / Current Tables for Calaveras Point, west of, San Francisco Bay, California
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Calaveras Point
Click for Map
Thu -- 12:03 AM PDT     Moonrise
Thu -- 03:39 AM PDT     8.05 feet High Tide
Thu -- 05:53 AM PDT     Sunrise
Thu -- 10:02 AM PDT     Moonset
Thu -- 11:21 AM PDT     -0.43 feet Low Tide
Thu -- 06:23 PM PDT     7.25 feet High Tide
Thu -- 08:17 PM PDT     Sunset
Thu -- 11:49 PM PDT     3.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.85.16.67.887.56.44.831.40.2-0.4-0.20.72.13.85.46.67.27.16.45.24.13.4

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Thu -- 12:03 AM PDT     Moonrise
Thu -- 01:21 AM PDT     0.73 knots Max Flood
Thu -- 04:01 AM PDT     -0.00 knots Slack
Thu -- 05:53 AM PDT     Sunrise
Thu -- 08:56 AM PDT     -1.22 knots Max Ebb
Thu -- 10:02 AM PDT     Moonset
Thu -- 11:50 AM PDT     0.01 knots Slack
Thu -- 02:39 PM PDT     1.20 knots Max Flood
Thu -- 06:15 PM PDT     -0.01 knots Slack
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:41 PM PDT     -0.48 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.70.70.40-0.3-0.6-0.9-1.2-1.2-0.9-0.50.10.81.11.210.70.1-0.2-0.4-0.5-0.5-0.3

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 (10,2,3,4)
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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.