Friday, March22, 2019 L-36.com


Marine Weather and Tides
Clyde, 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 7:06AMSunset 7:22PM Friday March 22, 2019 5:42 PM PDT (00:42 UTC) Moonrise 8:34PMMoonset 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 Clyde, CA
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location: 38.06, -122.04     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 222216
afdsto
area forecast discussion
national weather service sacramento ca
316 pm pdt Fri mar 22 2019

Synopsis
Rain and snow through Saturday with enough mountain snow to impact
weekend travel. Dry Sunday, followed by more rain and mountain snow
Monday through most of next week.

Discussion
Frontal precip band moving onshore with the upper trof tapping into
a tpw plume categorized as a weak ar. As the upper ridge axis
shifts east of our cwa, the mean flow will become more swly and
more orthogonal to the sierra improving the orographic component.

In addition, upper air dynamics are forecast to increase over the
cwa as the upper trof axis nears the coast and then moves inland
sat morning. Snow levels were forecast to be around 5000 ft over
the sierra, and 4000 ft over shasta co Fri afternoon, and
generally from 4000-4500 ft on sat. At press time, the shasta dam
profiler shows the snow level around 4000 ft, the oroville
profiler around 4500-5000 ft, and the colfax profiler around 5000
ft, right on target with the forecasts.

By late Sat afternoon, the main frontal precip band will be near the
ca nv border and cross mountain flow from the coastal range should
bring some subsidence warming drying and eroding of the cloud cover
on the west side of the vly. Bufkit forecast soundings suggest
differential heating could lead to surface-based convection sat
afternoon mainly from the sac area nwd towards rdd as the upper trof
axis moves over the area. The higher probability for storms appears
to be with the colder mid-tropospheric (5h) temps over the nrn
portion of the cwa, (i.E. Cic, rbl, rdd areas) where deeper
instability is forecast than at locations farther south in our cwa.

Given the timing of the trof axis, we may see storms developing mid
to late morning hrs especially in the higher terrain of our nrn
mountain zones. Environmental shear values look woefully low
tomorrow, but the instability, cold 5h temps (<-26 to -30 deg c) and
strength of the vort MAX (about 30 "rotations sec) are some
fairly good "rules-of-thumb" values we use for assessing the
chance of thunder in our cwa. In the wake of the frontal band,
satellite indicates an area of open cellular cumulus over the pac
and a couple of clusters of c-g strikes. This air mass will be
over the NRN portion of our CWA on sat, so we can not rule out a
chance of a t-storm or two tomorrow from late morning into the
afternoon.

The upper trof is forecast to move into nv Sat evening and precip
will end or wind-down overnite in our cwa. Upper-level short-wave
ridging moving in behind the trof on Sun will result in a dry day
with warmer daytime highs than on sat. Sun will be a good day to
travel, but the dry wx will be brief, as the next wx system is
forecast to spread another round of precip over interior norcal
beginning Sun night and continuing on mon. This system appears to be
a little wx than this current system, and the wet wx could persist
through the middle of next week. It seems as if mar wx will continue
like the "proverbial lion" over norcal until nearly the end of the
month. Jhm
.Extended discussion (Tuesday through Friday)
post-frontal showers possible Tuesday behind exiting cold front.

Bulk of activity looks to be focused over the foothills and
mountains. Instability progs suggest best potential for isolated
afternoon thunderstorms Tuesday is from about the sacramento area
southward in the central valley, extending east into the
motherlode.

Stronger pacific storm begins to spread widespread rain and
mountain snow over the CWA Tuesday night into Wednesday morning.

Front moves through Wednesday into Wednesday night with additional
vort maxes and cyclonic flow keeping showers in the forecast
Thursday into Friday. Precipitation totals from Tuesday into
Friday look to be around 0.50 inches to 1.25 inches in the central
valley with 1 to 3 inches for the foothills and mountains.

Mountain travel impacts due to periods of heavy snow and strong
wind are likely. Snow amounts of 1 to 3 feet above 5000 feet are
possible with locally higher amounts over higher terrain.

Aviation
Pac fnt movg thru intr norcal will keep areas of MVFR conds in
cntrl vly and wdsprd MVFR ifr with LCL lifr in fthls mtns tngt
into midday sat. Sfc wnds genly blo 12 kts in cntrl vly with lcl
s-sw sfc wnd gsts up to 30 kts poss ovr hyr mtn trrn nxt 24 hrs.

Sn lvls arnd 040 to 050 ft amsl.

Sto watches warnings advisories
Winter weather advisory until 5 pm pdt Saturday for west slope
northern sierra nevada-western plumas county lassen park.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 0 mi42 min Calm G 1 56°F 56°F1021 hPa (-0.9)
MZXC1 - 9415102 - Martinez-Amorco CA 5 mi42 min S 7 G 11 56°F 57°F1020.9 hPa (-0.9)56°F
UPBC1 5 mi42 min S 11 G 16
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 8 mi42 min SE 5.1 G 7 56°F 1020.8 hPa (-0.7)
SFXC1 - San Francisco Bay Reserve, CA 10 mi117 min SSE 2.9 55°F 1021 hPa51°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi42 min SSE 6 G 8.9 56°F 1020.3 hPa (-1.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 20 mi42 min SE 13 G 16 56°F 1020.8 hPa (-1.1)
LNDC1 22 mi42 min SE 9.9 G 12 55°F 1020.6 hPa (-0.9)
RCMC1 - 9414863 - Richmond, CA 22 mi48 min SSE 8.9 G 12 55°F 56°F1020.3 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi42 min SE 9.9 G 14 55°F 1020.6 hPa (-1.0)
OBXC1 24 mi42 min 55°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 24 mi42 min ESE 9.9 G 14
AAMC1 - 9414750 - Alameda, CA 24 mi48 min ESE 11 G 13 55°F 57°F1021.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 24 mi37 min SE 8.9 54°F 1021 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 26 mi42 min SE 17 G 19 55°F 1019.2 hPa (-1.4)
PXSC1 26 mi42 min 56°F 56°F
FTPC1 - 9414290 - San Francisco, CA 29 mi42 min SSE 4.1 G 7 56°F 56°F1020.8 hPa (-1.1)
46237 - San Francisco Bar, CA (142) 37 mi72 min 55°F8 ft
RTYC1 - 9414523 - Redwood City, CA 39 mi42 min SE 6 G 8 57°F 60°F1021.5 hPa (-0.7)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi42 min SSE 18 G 21 55°F 55°F1020.5 hPa (-1.1)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi49 minSW 67.00 miLight Rain57°F51°F81%1019.6 hPa
Fairfield / Travis Air Force Base, CA16 mi1.7 hrsESE 79.00 miLight Rain56°F49°F81%1022.3 hPa
Napa, Napa County Airport, CA16 mi48 minSE 72.00 miLight Rain Fog/Mist55°F53°F93%1019.8 hPa
Vacaville Nut Tree Airport, CA22 mi49 minSE 47.00 miLight Rain54°F53°F97%1021.3 hPa

Wind History from CCR (wind in knots)
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Last 24hr--SW8SW3W4SW6SW5SW5SE3S5S5S5S4S5SW6S5S9S6S8E3CalmS8S6SW6SW6
1 day agoW10W10SW7SW6SW5E3SW4CalmS6S6CalmS4SE3CalmS3--CalmN34N7NW11NW9W10W12
2 days agoN8SW12Calm5S9SW10S12E4S5SE4SE3SE3SE3SE7S8S8S6S8SW10SW8SW11W7
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Tide / Current Tables for Port Chicago, Suisun Bay, California
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Port Chicago
Click for Map
Fri -- 03:46 AM PDT     5.04 feet High Tide
Fri -- 07:08 AM PDT     Sunrise
Fri -- 08:28 AM PDT     Moonset
Fri -- 10:14 AM PDT     0.22 feet Low Tide
Fri -- 04:07 PM PDT     4.84 feet High Tide
Fri -- 07:21 PM PDT     Sunset
Fri -- 09:34 PM PDT     Moonrise
Fri -- 10:21 PM PDT     0.39 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.734.24.954.63.72.51.40.60.20.41.22.43.64.54.84.63.82.81.70.90.40.5

Tide / Current Tables for Roe Island S, Suisun Bay, California Current
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Roe Island S
Click for Map
Fri -- 02:17 AM PDT     0.96 knots Max Flood
Fri -- 05:31 AM PDT     -0.01 knots Slack
Fri -- 07:08 AM PDT     Sunrise
Fri -- 08:28 AM PDT     Moonset
Fri -- 08:50 AM PDT     -2.01 knots Max Ebb
Fri -- 12:14 PM PDT     0.00 knots Slack
Fri -- 02:48 PM PDT     0.95 knots Max Flood
Fri -- 05:49 PM PDT     -0.00 knots Slack
Fri -- 07:21 PM PDT     Sunset
Fri -- 08:53 PM PDT     -2.11 knots Max Ebb
Fri -- 09:34 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.710.90.70.3-0.5-1.3-1.9-2-1.8-1.2-0.20.50.90.90.80.4-0.2-1.2-1.9-2.1-1.9-1.3

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (20,4,5,8)
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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.