Friday, March22, 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 7:07AMSunset 7:23PM Friday March 22, 2019 5:09 PM PDT (00:09 UTC) Moonrise 8:33PMMoonset 7:29AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 214 Pm Pdt Fri Mar 22 2019
This afternoon..S winds 10 to 20 kt with gusts up to 25 kt. Rain.
Tonight..SW winds 10 to 20 kt with gusts up to 25 kt. Rain.
Sat..W winds 10 to 20 kt with gusts up to 25 kt.
Sat night..NW winds 5 to 15 kt.
Sun..E winds 5 to 15 kt.
Sun night..S winds 15 to 25 kt with gusts up to 35 kt. Rain likely.
Mon..SW winds 10 to 20 kt with gusts up to 25 kt. Rain.
Tue..SW winds up to 10 kt. Rain likely.
PZZ500 214 Pm Pdt Fri Mar 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate southerly winds will continue today across the coastal waters as a frontal system moves through. Expect winds to shift back out of the west to northwest tonight and tomorrow behind the front. Winds will become southerly again on Sunday before increasing Sunday night ahead of the next system. A moderate west to northwest swell will continue to build into tonight persisting through tomorrow. This will bring hazardous seas conditions over the waters, particularly for smaller vessels.


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 222340
afdmtr
area forecast discussion
national weather service san francisco bay area
440 pm pdt Fri mar 22 2019

Synopsis A frontal boundary will move from northwest to
southeast across the region today resulting in widespread rainfall
through tonight. Mainly dry conditions develop over the weekend
with unsettled weather likely to return during at least the first
half of next week.

Discussion As of 01:35 pm pdt Friday... Kmux radar imagery
remains active and bay area automated rain gauges continue to tip
as a weak system moves through the region. Rainfall totals since
this morning: 0.1-0.3" north bay, 0.01-0.1" sf bay and east bay,
little to no rain south of watsonville. Precipitation thus far
has mainly been associated with warm advection and a passing warm
front. Despite the slow start for rain, expect it to pick up in
intensity as a cold front lurking offshore moves through later
today. Latest hrrr WRF model pick up on the cold front and produce
some heavier showers rain with the fropa. Rain will initially be
heaviest across the north bay before slowly spread southward
across the rest of the forecast area. The increased rain rates
will likely impact portions of the evening commute. Steadier
rainfall will transition to showers behind the front from n-s
overnight and early Saturday morning. Only minor tweaks were made
to previous rainfall totals. Rainfall amounts are forecast to
range from 0.25-0.75" for most urban areas while the coastal
ranges and north bay mountains hills could see upwards of 1.50"
through Saturday.

Winds will be breezy to gusty with the FROPA and behind the front
with gusts of 30-40 mph in the higher peaks and immediate coast.

Gradual drying trend Saturday into Sunday before the next round of
rain.

The next round of rain is still on track to be Sunday night into
Monday. The 12z model suite has trended slower with the onset of
rain Sunday night and the current forecast will reflect this. That
being said, expect rain to develop Sunday night and continue into
Monday morning. Impacts to the Monday morning commute seem likely.

A brief break Monday night into Tuesday with a few linger showers
possible. Yet another system is then slated for Tuesday night into
the middle of the week. Simply put, an active pattern remains
heading to the end of the month.

Aviation As of 4:30 pm pdt Friday... Light rain spreading over
the sfo bay area. The rain will spread into the mry bay area
after 03z. Frontal system will be slow to move tonight so rain
should last through Saturday morning. Models indicate frontal band
moves out of the area after 15z with a few residual showers
through late morning. Rapid drying is indicated Saturday
afternoon. Strongest winds will occur early evening with maximum
speeds 10-15 kt out of the south to southeast.

Vicinity of ksfo... MVFR CIGS with light rain and reduced vsbys to
3-5 miles. Conditions improve toVFR after 12z. Southeast winds
10-15 kt becoming southerly tonight and westerly after 09z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... CIGS lowering into the MVFR range after
03z with light rain. Onshore winds to 10 kt becoming southeast
later tonight.

Marine As of 04:22 pm pdt Friday... Moderate southerly winds
will continue today across the coastal waters as a frontal system
moves through. Expect winds to shift back out of the west to
northwest tonight and tomorrow behind the front. Winds will become
southerly again on Sunday before increasing Sunday night ahead of
the next system. A moderate west to northwest swell will continue
to build into tonight persisting through tomorrow. This will
bring hazardous seas conditions over the waters, particularly for
smaller vessels.

Mtr watches warnings advisories
Tngt Sca... Pigeon pt to pt pinos 0-10 nm from 9 pm
sca... Pt pinos to pt piedras blancas 0-10 nm from 9 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm from 9 pm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Rough bar advisory for sf bar
public forecast: mm
aviation: W pi
marine: as
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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 mi39 min 57°F 60°F1021.7 hPa
AAMC1 - 9414750 - Alameda, CA 26 mi45 min 55°F 57°F1021.5 hPa
LNDC1 27 mi39 min 55°F 1021.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 28 mi69 min SSE 11 G 12
OBXC1 29 mi51 min 55°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 29 mi39 min 55°F 1021 hPa
PXSC1 30 mi39 min 56°F 56°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 30 mi39 min 55°F 1019.8 hPa
FTPC1 - 9414290 - San Francisco, CA 33 mi45 min 55°F 55°F1021.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 35 mi39 min 56°F 1021.2 hPa
46237 - San Francisco Bar, CA (142) 38 mi39 min 55°F8 ft
RCMC1 - 9414863 - Richmond, CA 38 mi45 min 55°F 56°F1020.7 hPa
UPBC1 41 mi69 min SSW 1.9 G 4.1
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi39 min 56°F 57°F1021.1 hPa56°F
PCOC1 - 9415144 - Port Chicago, CA 42 mi39 min 56°F 56°F1021.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 42 mi39 min 56°F 1021.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi39 min 55°F 1020.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi39 min SSE 19 G 23 55°F 55°F1020.7 hPa
MLSC1 - Moss Landing, South Harbor, CA 47 mi32 min NW 5.1 G 12 55°F 1022.5 hPa49°F
ELXC1 - Elkhorn Slough Reserve, CA 47 mi84 min NW 4.1 58°F 1023 hPa50°F
46092 - MBM1 48 mi55 min SSE 9.7 55°F 55°F1021.7 hPa (-1.1)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 49 mi79 min SSE 14 G 18 55°F 56°F8 ft1021.2 hPa (-0.9)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA1 mi73 minSSE 88.00 miLight Rain57°F50°F78%1021.9 hPa
Palo Alto Airport, CA4 mi82 minSE 910.00 miOvercast57°F50°F77%1021.7 hPa
San Jose, San Jose International Airport, CA9 mi76 minSSE 99.00 miLight Rain57°F52°F83%1021.5 hPa
San Carlos Airport, CA11 mi3.2 hrsS 810.00 miOvercast59°F50°F72%1021.7 hPa
Hayward, Hayward Air Terminal, CA15 mi75 minSSE 76.00 miLight Rain65°F50°F59%1022.3 hPa
San Jose / Reid / Hillv, CA15 mi82 minSSE 710.00 miOvercast59°F51°F77%1021 hPa
Oakland, Metro Oakland International Airport, CA19 mi76 minSSE 112.00 miRain Fog/Mist57°F53°F87%1021.5 hPa
San Francisco, San Francisco International Airport, CA20 mi73 minSE 88.00 miLight Rain55°F51°F87%1020.9 hPa
Livermore, Livermore Municipal Airport, CA21 mi76 minSW 46.00 miLight Rain56°F48°F77%1021.1 hPa
Half Moon Bay Airport, CA24 mi74 minSSE 12 G 184.00 miLight Rain55°F51°F88%1021.7 hPa

Wind History from NUQ (wind in knots)
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Last 24hrN14--W7NW4CalmW4CalmS4SE3CalmSE4SE3SE7SE6S3SE4SE3SE6SE9SE9SE8SE11SE9S8
1 day agoW11
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W8NW4NW3CalmSW3E3SW3S3CalmCalmCalmCalmCalmCalmCalmCalmNE5N7N7N8N11N11
2 days agoN8NW3S8S7
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G16

Tide / Current Tables for Calaveras Point, west of, San Francisco Bay, California
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Calaveras Point
Click for Map
Fri -- 02:23 AM PDT     8.87 feet High Tide
Fri -- 07:08 AM PDT     Sunrise
Fri -- 08:28 AM PDT     Moonset
Fri -- 08:56 AM PDT     0.33 feet Low Tide
Fri -- 02:39 PM PDT     8.55 feet High Tide
Fri -- 07:21 PM PDT     Sunset
Fri -- 09:09 PM PDT     0.57 feet Low Tide
Fri -- 09:33 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.67.68.88.77.75.93.820.70.31.12.84.96.98.38.57.86.34.32.51.10.612.5

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
Fri -- 02:34 AM PDT     -0.00 knots Slack
Fri -- 06:50 AM PDT     -1.40 knots Max Ebb
Fri -- 07:08 AM PDT     Sunrise
Fri -- 08:28 AM PDT     Moonset
Fri -- 09:12 AM PDT     0.01 knots Slack
Fri -- 11:51 AM PDT     1.67 knots Max Flood
Fri -- 03:02 PM PDT     -0.01 knots Slack
Fri -- 07:13 PM PDT     -1.29 knots Max Ebb
Fri -- 07:21 PM PDT     Sunset
Fri -- 09:33 PM PDT     0.00 knots Slack
Fri -- 09:33 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.20.5-0.2-0.7-1.1-1.3-1.4-1-0.20.81.51.71.40.90-0.5-0.9-1.2-1.3-1.1-0.50.41.2

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 (20,4,5,8)
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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.