Friday, February23, 2018 L-36.com


Marine Weather and Tides
Coloma, 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 6:41AMSunset 5:52PM Friday February 23, 2018 12:38 PM PST (20:38 UTC) Moonrise 11:33AMMoonset 1:01AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 815 Am Pst Fri Feb 23 2018
Today..NW winds 5 to 15 kt.
Tonight..SW winds 5 to 15 kt.
Sat..W winds 10 kt...becoming nw 15 to 25 kt in the afternoon.
Sat night..NW winds 15 to 25 kt.
Sun..W winds 10 to 20 kt.
Mon..NW winds 5 to 15 kt. Chance of showers, then slight chance of showers.
Tue..NW winds 5 to 15 kt. Slight chance of showers.
PZZ500 815 Am Pst Fri Feb 23 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gale-force northerly winds over the outer waters will subside later this morning. High pressure over the eastern pacific will continue to produce moderate to strong winds over the coastal waters into the weekend.

7 Day Forecast for Marine Location Near Coloma, CA
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location: 38.81, -120.92     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 231737
afdsto
area forecast discussion
national weather service sacramento ca
935 am pst Fri feb 23 2018

Synopsis
Below normal temperatures will continue. Snow showers possible
over the mountains Saturday with additional systems next week
bringing more widespread precipitation.

Discussion
Update: dry nly flow eroding mixing out the thin band of stratus on
the E side of the SRN sac NRN sjv this morning. Clear, dry, cool n
wind today, with decreasing wind in the afternoon as pressure
gradients relax.

Next system off the b.C. Coast will not be impactful for norcal, a
weak, rather nuisance wx system. Mostly high clouds expected to
increase over the CWA on Sat with some lower cloud ceilings over the
mtns with isolated light snow showers flurries. Another frosty
morning expected on Sat in the SRN sac vly, delta and NRN sjv, while
the timing of cloud cover for the NRN portion of the CWA looks to be
around sunrise or a little after, with still a chance of frost
again.

Mon wx system looks like another cold, low qpf, high snow ratio
system with the valley seeing more rainfall than yesterday's system.

Nam forecasts around a quarter inch for sac and this looks like the
last shot of rain this month. Dts rainfall for the month remains at
zero through today, although sac exec had .01" yesterday. Here are
the driest febs for dts:
0.04 in 1899, 0.16 in 1913, 0.19 in 1995, 0.21 in 1953, and .26 in
1997 and 2013.

March may come in as the "proverbial lion" especially if the 23 00z
ecmwf verifies. Jhm

Previous discussion
System that brought low elevation snow and showers to the valley
yesterday has pushed out of the area this morning. As skies clear,
temperatures dropping into the upper 20s to mid 30s across the
valley with teens and single digits in the mountains. Dry weather is
expected today but breezy northerly winds will develop in system's
wake. Gusts of 15 to 30 mph possible across the valley with higher
gusts in the mountains. Another chilly overnight into Saturday
morning with frost on tap as valley temperatures drop near or just
below the freezing mark.

Another system will drop southeast in northerly flow, moving into
norcal on Saturday. This wave looks weaker and drier than
Thursday's system with showers likely confined to the mountains,
north of the highway 50 corridor. While snow levels remain quite
low, there's not much moisture to work with so expecting
accumulations less than an inch or two. Still may be enough to
cause some slick roads. For the rest of the area, expect increased
cloud cover. Could see a brief period of breezy southerly winds,
mainly across northern sacramento valley and across higher
terrain.

Sunday looks dry across the area before next system quickly drops
southeast into the area for Monday. Models in decent agreement,
bringing precipitation and another round of breezy winds to the
area during the day. This wave looks similar in strength and
amounts to Thursday's storm, though perhaps may bring a little
more widespread rain to the valley (regardless, still not very
much). Snow levels will be around the 2000-3000 feet range with
another half foot of snow at pass levels and a dusting down into
the foothills. Those with travel plans should keep an eye on the
forecast as chain controls and delays will be possible.

Ceo
.Extended discussion (Tuesday through Friday)
models continue to show gradual retrogression of the large-scale
trough next week, but lots of differences continue in the details.

Mainly dry weather expected Tuesday and Wednesday, then prospects
for more significant precipitation increase later next week. Stay
tuned.

Aviation
Vfr conditions next 24 hours except local MVFR central valley
south of kove til about 18z. Northerly surface winds develop thru
the central valley by 18z with gusts 20-25 kts.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 72 mi113 min NE 11 49°F 1029 hPa19°F
PCOC1 - 9415144 - Port Chicago, CA 79 mi50 min NW 2.9 G 8 49°F 51°F1028.8 hPa
RCMC1 - 9414863 - Richmond, CA 100 mi56 min N 6 G 9.9 47°F 52°F1029.1 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Auburn Municipal Airport, CA13 mi43 minNNW 510.00 miFair43°F28°F57%1027.1 hPa
Lincoln Regional Karl Harder Field, CA24 mi43 minNNW 1110.00 miFair48°F23°F37%1028.4 hPa

Wind History from AUN (wind in knots)
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Last 24hrS8S6SE7CalmW4E7CalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW4NW5NW4
1 day agoW7NW7CalmW6W4CalmCalmCalmCalmE6SE7SE7SE7E9SE8S6SE8S6S7S8S8
G15
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2 days agoSW7W6W6W6NW3CalmCalmE4CalmE4E6E6E5E7E6E5E3E6E3E5CalmW4NW3W7

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Fri -- 12:09 AM PST     First Quarter
Fri -- 12:59 AM PST     2.08 feet High Tide
Fri -- 01:02 AM PST     Moonset
Fri -- 06:46 AM PST     Sunrise
Fri -- 07:23 AM PST     0.63 feet Low Tide
Fri -- 11:35 AM PST     Moonrise
Fri -- 12:03 PM PST     2.98 feet High Tide
Fri -- 05:52 PM PST     Sunset
Fri -- 09:32 PM PST     0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.121.81.41.10.80.60.71.21.92.732.92.72.31.91.410.60.40.30.30.7

Tide / Current Tables for Sacramento, Sacramento River, California
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Sacramento
Click for MapNote: These data apply only during low river stages.

Fri -- 12:09 AM PST     First Quarter
Fri -- 12:58 AM PST     2.08 feet High Tide
Fri -- 01:02 AM PST     Moonset
Fri -- 06:46 AM PST     Sunrise
Fri -- 07:23 AM PST     0.64 feet Low Tide
Fri -- 11:35 AM PST     Moonrise
Fri -- 12:02 PM PST     2.99 feet High Tide
Fri -- 05:52 PM PST     Sunset
Fri -- 09:33 PM PST     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.121.81.41.10.80.60.71.222.732.92.72.31.91.410.60.40.30.30.7

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 Sacramento, CA (15,3,4,5)
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Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map

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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.