Saturday, February17, 2018 L-36.com


Marine Weather and Tides
Fairview, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 6:52AMSunset 5:51PM Saturday February 17, 2018 6:57 PM PST (02:57 UTC) Moonrise 8:06AMMoonset 7:49PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 224 Pm Pst Sat Feb 17 2018
.small craft advisory in effect from Sunday morning through late Sunday night...
Tonight..W winds 5 to 15 kt...increasing to 10 to 20 kt after midnight. Gusts up to 30 kt.
Sun..W winds 15 to 20 kt with gusts up to 35 kt.
Sun night..W winds 10 to 20 kt with gusts up to 30 kt.
Washingtons birthday..NW winds 10 to 20 kt with gusts up to 30 kt.
Mon night..NW winds 10 to 20 kt with gusts up to 30 kt.
Tue..NW winds up to 10 kt.
Tue night..W winds around 5 kt.
Wed..NE winds up to 10 kt...becoming nw.
Thu..N winds around 5 kt...becoming w.
PZZ500 224 Pm Pst Sat Feb 17 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northerly winds will push a cold front southward over the california coastal waters and bays Sunday morning. The gusty winds will also result in fresh swell and steep wind waves.

7 Day Forecast for Marine Location Near Fairview, CA
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location: 37.67, -122     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 180023
afdmtr
area forecast discussion
national weather service san francisco bay area
423 pm pst Sat feb 17 2018

Synopsis Today will be the last day of mild temperatures
across the region. Conditions will turn blustery and much colder
on Sunday as a strong cold front sweeps through the region. There
are also chances of showers mainly across the central coast Sunday
night into Monday with snow levels forecast to drop below 1,000
feet. In wake of the frontal passage, some of the coldest
temperatures the region has experienced in years are forecast for
early next week.

Discussion As of 02:00 pm pst Saturday... Clear skies and above
average temperatures across the greater san francisco and monterey
bay areas early this afternoon. Temperatures are generally running
in the low 60s to mid 70s, which is 2 to 5 degrees warmer than
the same time yesterday and 3 to 8 degrees warmer than normal
overall. Both the clear skies and above average temperature come
as the result of an offshore ridge staking a claim over our
immediate inland area. That said, this high pressure ridge is
being forced aside by a much more vigorous low pressure system
dropping towards our area from the north.

The aforementioned approaching low pressure system has already
begun to impact our regional weather by causing a pressure drop at
all observational sites. Over the next 24 hours, high clouds will
begin to advance southward and blanket the area ahead of the
arrival of a strong surface cold front. Much cooler temperatures
are forecast after tomorrow morning, particularly in the wake of
the cold front. Tomorrow afternoon's high temperatures are
forecast to be 6 to 16 degrees cooler than today's afternoon highs
at nearly all locations, with slightly cooler temperatures
expected by early next week. The real story with temperatures are
not the highs, but the lows. After a mild winter, including a
recent stretch of record warm temperatures, numerous record low
temperatures are likely to be broken on Monday, Tuesday, and
Wednesday morning, if not on other days as well. Lows in the mid
20s to mid 30s are forecast at nearly all locations, with the
coldest temperatures inland and away from the coast. Plants that
bloomed early during the recent warm stretch will be at the risk
given these very cold temperatures. In addition, precautions may
need to be taken to protect pets, livestock, pipes, and other
sensitive infrastructure during these potentially record breaking
cold nights.

In addition to the cold temperatures, this storm system is
forecast to bring blustery winds to the area, particularly over
the coastal waters, along the coast, and over the higher ridges
and peaks. Sustained winds of 20 to 30 mph are possible with gusts
30 to 40 mph. We are borderline on requirements for wind
advisories along the coast and over some higher terrain, so keep
an eye out for these being issued in the case that winds ramp up
in successive model runs. These winds, in conjunction with the
cold temperatures, will result in very cold wind chill readings in
the coldest, windiest areas. The windiest, coldest spot over the
highest elevations across the area could see wind chills plummet
into the mid teens, while wind chills in the 20s to low 30s are
possible Monday, Tuesday, and Wednesday mornings.

Finally, while this storm system has a very poor moisture tap,
the forecast models generally agree that there will be just enough
to squeeze out some precipitation Sunday night into early Monday.

The bulk of this precipitation is expected to fall in some proximity
to the coastline, primarily at or above 1000 feet. Latest local
and national wrfs, nam, other short term models place the majority
of any precipitation over the higher elevation of the santa cruz
mountains and big sur areas. Model output continues to nudge
towards slightly lower snow levels and slightly higher qpf
amounts. With a snow to liquid ratio of around 8 to 1, have pushed
overall snow amounts about 25-33% higher than the previous
forecast. The big sur area could see locally up to 8" with the
latest numbers (though a few models hinted at closer to 12"), with
most areas there seeing closer to 2-6". The santa cruz mountains
highest elevations could see locally up to 5", with areas at
slightly lower elevations seeing 1-3". Snow here could potentially
impact travel over highway 17 Sunday night into Monday morning,
so please check with caltrans and other local authorities to see
if these and over roads are impacted before heading in that
direction. Elsewhere, a dusting of snow may fall in the coastal
north bay incl mt tamalpais and other tall peaks of the north
bay. The limiting factor with the north bay snow amounts is the
limited moisture rather than the temps snow levels. A dusting of
snow could also fall over other inland peaks and ridges >= 1000
ft.

As snow levels continue to decline with each model run, it should
be noted that many areas below 1000 ft could see "snow in the
air" or sleet coming down as snow that is created farther up falls
into the relatively warmer air closer to the surface (especially
if there is a shallow marine layer). Any wintry mix or sleet
coming down will be extremely hazardous to those travelling in
vehicles, so please drive carefully. Additionally, black ice over
bridges and other susceptible areas are a risk for Monday,
Tuesday, and Wednesday mornings. Some key parameters to watch for
"snow in the air" at sea level will be: where the moisture will
be, 700mb temperatures -16c or cooler, 850mb temperatures at -7c or
cooler, and 500-100mb thicknesses of 522dm or less. Some short
term models checked all of these boxes today -- so it is
definitely something to watch over the next 24-36 hours.

Aviation As of 4:15 pm pst Saturday... An approaching upper
trough will bring some low level moisture into the area after 08z
leading to the formation of MVFR cigs. Local ifr for CIGS and vsby
at sts.

Vicinity of ksfo... MVFR after 08z. West winds to 15 kt through
08z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR after 09z.

Climate
Here are record low temperatures and the years they occurred for
Monday through Wednesday next week.

Location Monday Tuesday Wednesday
sf bay area
healdsburg 28 in 1932 22 in 1922 28 in 1929
santa rosa 26 in 1932 26 in 1913 26 in 1913
calistoga 25 in 1918 25 in 2006 25 in 2006
kentfield 27 in 1932 27 in 1913 29 in 1953
san rafael 32 in 1990 32 in 2006 33 in 1955
napa 29 in 1990 28 in 1920 29 in 1955
san francisco 38 in 1897 38 in 1897 36 in 1890
sfo airport 36 in 1990 37 in 2011 34 in 1955
half moon bay 34 in 1954 32 in 2013 31 in 2006
oakland airport 35 in 1955 34 in 2006 33 in 1955
richmond 35 in 1990 35 in 1990 35 in 1981
livermore 27 in 1956 28 in 1942 27 in 1955
moffett field 35 in 1949 34 in 2006 32 in 1955
san jose 32 in 1990 30 in 1897 25 in 1897
gilroy 27 in 1964 30 in 1990 31 in 1976
monterey bay area
santa cruz 30 in 1990 29 in 1913 30 in 1955
salinas 29 in 1990 31 in 2006 31 in 1970
salinas airport 29 in 1933 28 in 1953 30 in 1953
monterey 35 in 1990 35 in 2006 36 in 1952
king city 25 in 1955 22 in 1953 23 in 1953

Marine As of 03:40 pm pst Saturday... Gusty northerly winds will
push a cold front southward over the california coastal waters
and bays Sunday morning. The gusty winds will also result in
fresh swell and steep wind waves.

Mtr watches warnings advisories
Tngt Sca... Pt reyes to pigeon pt 0-10 nm from 6 pm
sca... Pigeon pt to pt pinos 0-10 nm from 6 pm
sca... Pt pinos to pt piedras blancas 0-10 nm from 6 pm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Mry bay from 9 pm
public forecast: drp
aviation: W pi
marine: sims
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 16 mi39 min NNW 2.9 G 4.1 55°F 57°F1017.9 hPa
LNDC1 17 mi39 min WSW 2.9 G 4.1 56°F 1017.5 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi45 min WSW 1.9 G 2.9 56°F 57°F1017.6 hPa
OBXC1 20 mi39 min 56°F 51°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 20 mi39 min SW 4.1 G 6 56°F 1017.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 20 mi39 min SW 8.9 G 11
PXOC1 - 9414311 - San Francisco (Pier 1), CA 23 mi39 min NE 1.9 G 2.9 55°F 1016.5 hPa
PXSC1 23 mi39 min 56°F 51°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 25 mi39 min S 13 G 14 55°F 1017.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi39 min W 2.9 G 5.1 61°F 55°F1016.9 hPa41°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 26 mi39 min S 2.9 G 2.9 64°F 1016.5 hPa
FTPC1 - 9414290 - San Francisco, CA 26 mi45 min WSW 11 G 16 53°F 54°F1017.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 27 mi39 min WSW 6 G 8 61°F 55°F1016.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 28 mi48 min Calm 58°F 1017 hPa
RCMC1 - 9414863 - Richmond, CA 28 mi45 min E 1.9 G 4.1 56°F 55°F1017 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 30 mi39 min SW 7 G 9.9 59°F 1016.7 hPa
46237 - San Francisco Bar, CA (142) 35 mi57 min 53°F5 ft
SFXC1 - San Francisco Bay Reserve, CA 37 mi72 min W 4.1 63°F 1017 hPa42°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 45 mi67 min NW 16 G 19 52°F 53°F5 ft1018.3 hPa (-1.2)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA6 mi63 minW 610.00 miFair55°F46°F72%1018.8 hPa
Livermore, Livermore Municipal Airport, CA10 mi64 minW 810.00 miFair59°F42°F54%1017 hPa
Oakland, Metro Oakland International Airport, CA12 mi64 minW 810.00 miA Few Clouds55°F48°F80%1017.9 hPa
Palo Alto Airport, CA15 mi70 minNNW 610.00 miClear0°F0°F%1017.6 hPa
San Carlos Airport, CA16 mi67 minN 410.00 miClear59°F48°F68%1017.6 hPa
Mountain View, Moffett Field, CA17 mi2 hrsNNW 710.00 miFair61°F48°F63%1018.3 hPa
San Francisco, San Francisco International Airport, CA19 mi2 hrsW 1710.00 miA Few Clouds57°F46°F67%1018 hPa
San Jose, San Jose International Airport, CA21 mi64 minNNW 810.00 miFair60°F41°F50%1017.6 hPa
Concord, Buchanan Field, CA22 mi64 minSW 310.00 miFair65°F39°F39%1015.4 hPa

Wind History from HWD (wind in knots)
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Last 24hrNW5CalmCalmNE3E5E5E4NE5E3E6E3NE6E4E4N34CalmW9W5W4----W7W6
1 day agoCalmSE3E4E5E4E3E6E4E4E5E7E4E4NE3CalmCalmW3W6W6W7W8W7W5NW9
2 days agoW14W10W7CalmW7CalmCalmNE4NE6NE6NE5SE3CalmSE3CalmCalmN54NW11NW10NW13W10W10NW7

Tide / Current Tables for Alameda Creek, San Francisco Bay, California
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Alameda Creek
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Sat -- 01:49 AM PST     5.41 feet High Tide
Sat -- 06:55 AM PST     Sunrise
Sat -- 08:06 AM PST     Moonrise
Sat -- 08:30 AM PST     0.57 feet Low Tide
Sat -- 01:09 PM PST     5.98 feet High Tide
Sat -- 05:50 PM PST     Sunset
Sat -- 07:50 PM PST     Moonset
Sat -- 08:54 PM PST     0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
45.15.454.23.121.10.60.71.83.55.165.85.24.33.11.90.90.200.61.9

Tide / Current Tables for Oakland Airport SW, South San Francisco Bay, California Current
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Oakland Airport SW
Click for Map
Sat -- 01:32 AM PST     -0.01 knots Slack
Sat -- 03:51 AM PST     -0.60 knots Max Ebb
Sat -- 06:55 AM PST     Sunrise
Sat -- 06:58 AM PST     0.00 knots Slack
Sat -- 08:06 AM PST     Moonrise
Sat -- 10:07 AM PST     0.56 knots Max Flood
Sat -- 01:03 PM PST     -0.00 knots Slack
Sat -- 04:03 PM PST     -0.86 knots Max Ebb
Sat -- 05:50 PM PST     Sunset
Sat -- 07:31 PM PST     0.00 knots Slack
Sat -- 07:50 PM PST     Moonset
Sat -- 10:44 PM PST     0.67 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.2-0.2-0.5-0.6-0.5-0.200.30.50.60.50.30-0.4-0.7-0.9-0.7-0.5-0.20.10.40.60.7

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 (21,6,7,8)
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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.