Thursday, January17, 2019 L-36.com


Marine Weather and Tides
Concord, 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 7:20AMSunset 5:15PM Thursday January 17, 2019 12:44 AM PST (08:44 UTC) Moonrise 2:05PMMoonset 3:37AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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- 859 Pm Pst Wed Jan 16 2019
.gale warning in effect until 3 am pst Thursday...
Tonight..S winds 20 to 30 kt with gusts up to 45 kt... Becoming sw 10 to 20 kt with gusts up to 30 kt after midnight. A chance of Thunderstorms this evening. Showers. A slight chance of Thunderstorms after midnight.
Thu..SW winds 15 to 25 kt with gusts up to 35 kt. Showers and a slight chance of Thunderstorms.
Thu night..W winds 5 to 15 kt with gusts up to 25 kt. Patchy fog.
Fri..NE winds around 5 kt.
Fri night..E winds 5 to 15 kt.
Sat..NE winds 5 to 15 kt.
Sat night..E winds up to 10 kt.
Sun..W winds 5 to 10 kt. A chance of rain.
Martin luther king jr day..N winds 5 to 10 kt. Winds and wind waves higher in and near Thunderstorms.
PZZ500 859 Pm Pst Wed Jan 16 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Wednesday's powerful system will continue pushing inland, allowing for the gale-force winds to slowly subside through the night. Scattered rain showers -- locally heavy, at times -- will continue through Sunrise Thursday. In addition, a very large and long period west swell will arrive Thursday morning and persist into Friday. This incoming swell will prolong the hazardous sea conditions throughout the waters, particularly for small vessels.


7 Day Forecast for Marine Location Near Concord, CA
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location: 38, -122     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 162327
afdsto
area forecast discussion
national weather service sacramento ca
327 pm pst Wed jan 16 2019

Synopsis
Wet and windy weather is expected across the region through
Thursday with heavy snowfall in the mountains. A brief period of
dry weather is expected before precipitation chances return on the
weekend. A pattern change shifting to dry weather is expected for
next week.

Discussion
Impressive visible satellite presentation of the powerful pacific
storm lurking offshore. With a central low pressure area below
975 mb, the attendant cold front has shown up well with deep,
moist convection approaching the bay area with a defined rope
cloud extending back to 150w. Warm advection ahead of the system
has kept the region overcast with a broad, stratiform band of
precipitation. Hourly rainfall rates have capped out at around
0.30 inches but should pick up later this afternoon and evening
as stronger ascent arrives with the cold front.

Given the character of the offshore convection in conjunction with
modest instability in the guidance, scattered thunderstorms are
possible across the region. Overall profiles are not conducive to
widespread convective activity, but some rumbles of thunder are
definitely possible. Locally higher rainfall rates would accompany
these cells, likely in the 0.50 to 1 inch range. This would pose
some risk to local burn scars if any such storm moves over these
regions. Otherwise, the larger-scale valley concern are urban and
small stream flooding along with impacts from the 6 to 12 hour
period of high winds. Local gusts could reach 50 to 60 mph if any
of the 925-mb winds were able to mix down to the surface. Breezy
conditions will persist into Thursday although gusts should come
down considerably.

The other concern will be across the sierra ranges where several
feet of snow is likely to fall during the next 24 to 36 hours.

Major impacts are anticipated over any roads crossing these
mountains so travel is not advised until conditions improve.

Strong moist, upslope flow in conjunction with vigorous ascent
from the trough itself will spread snowfall rates possibly
reaching 2 to 3 inches per hour at times. Near hurricane force
wind gusts added in will lead to blizzard whiteout conditions
through Thursday. Once the system advances into the central great
basin, steep lapse rates aloft will force instability snow
showers into Friday morning.

A brief period of improving conditions are anticipated thereafter
as a transient upper ridge moves through. By Saturday morning, a
shortwave moving through the pacific northwest will lead to some
increasing precipitation chances along the trailing cold front.

This is primarily a concern north of i-80 although amounts will
be nothing like this current storm. An additional precipitation
chance lurks in the wake to conclude the weekend. Bro
.Extended discussion (Sunday through Wednesday)
on Sunday, a progressive upper level trough moves across northern
california bringing chances for light precipitation to the area.

Rain looks to be light in the valley, with mountain snow generally
ranging from a few inches to up to a foot at higher elevations. Snow
levels will start high on Sunday at over 6500 feet, lowering down to
4500-5000 feet by Sunday night.

After this late weekend system, ridging moves back over the west
coast and dry conditions are expected through the end of the
forecast period. Next week, temperatures in the valley warm up to
the lower 60s with high temperatures in the mountain and foothills
in the 40s. Eh

Aviation
A strong storm system will bring gusty southerly winds to
terminals tonight through Thursday morning. Rain will continue
overnight through the morning with local MVFR ifr conditions
expected at terminals. Wind gusts up to 50 knots will be possible
with the strongest winds between 03-12z. Isolated tsra is also
possible. Airport weather warnings have been issued for today and
tonight for strong winds for rdd and sck.

Sto watches warnings advisories
High wind warning until noon pst Thursday for carquinez strait
and delta-central sacramento valley-clear lake southern lake
county-motherlode-mountains southwestern shasta county to
northern lake county-northeast foothills sacramento valley-
northern sacramento valley-northern san joaquin valley-southern
sacramento valley-western plumas county lassen park.

Winter storm warning until 4 am pst Friday for west slope
northern sierra nevada-western plumas county lassen park.

Blizzard warning until noon pst Thursday for west slope northern
sierra nevada-western plumas county lassen park.

Flood watch through Thursday morning for carquinez strait and
delta-central sacramento valley-clear lake southern lake county-
motherlode-mountains southwestern shasta county to northern lake
county-northeast foothills sacramento valley-northern sacramento
valley-northern san joaquin valley-shasta lake area northern
shasta county-southern sacramento valley.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 4 mi62 min SW 13 G 22 59°F 51°F1008.8 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 7 mi62 min SW 17 G 23 59°F 51°F1008.8 hPa59°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 7 mi56 min WSW 9.9 G 18 59°F 1008.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 14 mi119 min SW 15 57°F 1008 hPa55°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 15 mi56 min SW 16 G 23 58°F 1008.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 20 mi56 min SW 22 G 29 58°F 1008.7 hPa
LNDC1 21 mi62 min SSW 12 G 18 58°F 1009.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi62 min SW 25 G 31
AAMC1 - 9414750 - Alameda, CA 22 mi62 min SSW 17 G 20 57°F 53°F1009.9 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi56 min SW 15 G 23 58°F 1009.3 hPa
RCMC1 - 9414863 - Richmond, CA 22 mi56 min 53°F
OBXC1 23 mi56 min 58°F 54°F
PXSC1 25 mi62 min 59°F 56°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi63 min SSE 7 57°F 1009 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 25 mi62 min S 7 G 13 58°F 1008.1 hPa
FTPC1 - 9414290 - San Francisco, CA 28 mi62 min SSW 9.9 G 15 57°F 55°F1009.5 hPa
RTYC1 - 9414523 - Redwood City, CA 36 mi62 min S 11 G 15 58°F 53°F1010.3 hPa
46237 - San Francisco Bar, CA (142) 37 mi104 min 56°F11 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 48 mi44 min SSW 18 G 21 57°F 56°F1009.5 hPa (+2.2)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA3 mi51 minSSW 13 G 229.00 miOvercast59°F52°F78%1007.9 hPa
Fairfield / Travis Air Force Base, CA20 mi1.8 hrsSSW 16 G 2210.00 miOvercast55°F53°F93%1008.4 hPa
Napa, Napa County Airport, CA21 mi50 minSSW 1210.00 miOvercast56°F53°F90%1007.7 hPa
Livermore, Livermore Municipal Airport, CA23 mi51 minSSW 1010.00 miOvercast56°F50°F81%1009.5 hPa
Hayward, Hayward Air Terminal, CA24 mi50 minSSW 710.00 miOvercast59°F52°F78%1011.1 hPa
Oakland, Metro Oakland International Airport, CA24 mi51 minSW 169.00 miOvercast58°F53°F84%1010.2 hPa

Wind History from CCR (wind in knots)
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Last 24hrSW6CalmCalmCalmS4S10S13SE5S10S8S8CalmS9S3SE10
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1 day agoCalmSW4N3CalmW3W4CalmCalmSE3E7SE7
G15
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2 days agoNE3CalmCalmN6NE6NE6NE6E5E10
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--E8--NE6E9
G15
NE7E4SE6SE4CalmCalmSE4CalmCalm

Tide / Current Tables for Port Chicago, Suisun Bay, California
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Port Chicago
Click for Map
Thu -- 03:37 AM PST     Moonset
Thu -- 03:53 AM PST     1.85 feet Low Tide
Thu -- 07:22 AM PST     Sunrise
Thu -- 10:00 AM PST     5.35 feet High Tide
Thu -- 02:04 PM PST     Moonrise
Thu -- 05:14 PM PST     Sunset
Thu -- 06:04 PM PST     0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.42.92.421.92.12.63.54.55.15.45.14.53.62.61.60.90.30.10.30.91.82.73.4

Tide / Current Tables for Stake Point .9 Mi NNW, Suisun Bay, California Current
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Stake Point .9 Mi NNW
Click for Map
Thu -- 01:13 AM PST     -0.00 knots Slack
Thu -- 03:17 AM PST     -0.33 knots Max Ebb
Thu -- 03:36 AM PST     Moonset
Thu -- 05:23 AM PST     0.00 knots Slack
Thu -- 07:22 AM PST     Sunrise
Thu -- 09:11 AM PST     1.00 knots Max Flood
Thu -- 12:11 PM PST     -0.00 knots Slack
Thu -- 02:04 PM PST     Moonrise
Thu -- 03:37 PM PST     -0.92 knots Max Ebb
Thu -- 05:14 PM PST     Sunset
Thu -- 07:49 PM PST     0.00 knots Slack
Thu -- 11:39 PM PST     0.65 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.1-0.2-0.3-0.3-0.10.20.60.910.90.60.1-0.4-0.7-0.9-0.9-0.8-0.6-0.30.10.30.50.6

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 (3,6,7,8)
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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.