Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Geyserville, 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 6:47AMSunset 6:01PM Saturday February 24, 2018 12:13 AM PST (08:13 UTC) Moonrise 12:31PMMoonset 2:15AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 849 Pm Pst Fri Feb 23 2018
.small craft advisory in effect through Saturday morning...
Tonight..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 4 to 5 ft at 15 seconds.
Sat..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 4 to 5 ft at 15 seconds. Slight chance of showers in the afternoon.
Sat night..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 4 to 5 ft at 15 seconds.
Sun..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 5 to 7 ft at 15 seconds and S 3 ft at 16 seconds.
Sun night..W winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 15 seconds. Slight chance of showers in the evening, then chance of showers after midnight.
Mon..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 7 to 9 ft...increasing to 10 to 13 ft. Chance of showers.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 8 to 10 ft.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 8 ft. Chance of showers.
PZZ500 849 Pm 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... Gusty north to northwest winds will continue across the coastal waters through the weekend as high pressure sits over the eastern pacific. On Monday an upper level low pressure system will move south bringing a cold front over the waters resulting in increasing winds, fresh swell, and scattered showers.

7 Day Forecast for Marine Location Near Geyserville CDP, CA
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location: 38.71, -123     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 232307
afdsto
area forecast discussion
national weather service sacramento ca
307 pm 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
Next system off the b.C. Coast will not be impactful for norcal, a
weak, rather benign (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 under clear skies and strong radiational cooling,
while the timing of cloud cover for the NRN portion of the cwa
looks to be around sunrise or a little after, but still a chance
of at least patchy frost.

Dry weather on Sun will be followed by another wx system on mon.

This system will also be similar to its predecessors, cold with
relatively low qpf, and high snow ratios. (favoring the nbm
snow ratios during these colder, low wbzs goa systems.) however,
the central valley should see more rainfall than yesterday's
system. NAM bufkit forecasts around a quarter inch for sac, and
this may be the last shot of rain this month. Dts rainfall for the
month remains at zero through today, although sac exec had .01"
yesterday.

Here is the list for the driest febs for dts:
1) 0.04 in 1899
2) 0.16 in 1913
3) 0.19 in 1995
4) 0.21 in 1953
5) 0.26 in 1997 & 2013
spc plume forecasts show about 10-11 inches of snow for the mean
at blu for the Mon system. For now, our forecast is trending toward
the bufkit NAM for blu with about 8 inches, and about 15-20:1 snow
ratios for the sierra. (the "normal" slr is about 9:1.) a wide
swath of 4 to 8 inches of snow is forecast for zone 69 with
isolated 12 inch amounts near the sierra crest.

The wr us west coast ar landfall tool (probability of ivt) continues
to show a lack of moisture, albeit it is not as "bone dry" for the
next 16 days as yesterday's models. However, there remains a lack of
significant ars. What moisture there is will be spilling over the pac
ridge and basically eroding as it hits the pac NW and spreads inland
into our cwa. (one could make a weak argument that the Mon system may
have a little more moisture than what was forecast yesterday.)
march may come in as the "proverbial lion". The landfall tool shows a
weak plume in the mid latitudes on day 6 which would be mar 1st. Jhm
.Extended discussion (Tuesday through Friday)
a period of dry weather is expected behind Monday's winter storm
before unsettled conditions return. Scattered showers possible
over the northern mountains and shasta county overnight Tuesday.

Otherwise, dry weather for interior norcal Tuesday and Wednesday.

Gusty north winds are possible Tuesday behind the passage of the
upper level trough on Monday. Models bring in another winter storm
that will impact the area Wednesday night into the early weekend.

Widespread precipitation is expected with this system, though
forecast details continue to change between model runs this far
out. Currently, the heaviest precipitation is forecast for
Thursday into early Friday with periods of heavy snow impacts
possible for the sierra passes. Hec

Aviation
Vfr conditions next 24 hours. Northerly surface winds 10-15 kts
continue thru the central valley with gusts 20-25 kts through 0z
Saturday.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 36 mi33 min NNW 23 G 27 48°F 49°F1029.8 hPa34°F
ANVC1 - 9416841 - Arena Cove, CA 40 mi43 min E 2.9 G 5.1 42°F 48°F1031.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 49 mi43 min WNW 12 G 15 50°F1029.1 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA17 mi20 minN 010.00 miFair33°F28°F85%1028.5 hPa

Wind History from STS (wind in knots)
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Last 24hrNW6N4NW8N9N13
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N9N4N7N6N11N8NW7NW7N7NW6W6NW5W8SW4CalmCalmCalmCalmW3
1 day agoS3SE3CalmSE3S4NW3NW6NW4CalmCalmS4--NW11
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2 days agoN4N3NW3N5NW4N7N7N5N5N4CalmSW4S3SE344W10SW11W7CalmW4SE3CalmCalm

Tide / Current Tables for Fort Ross, California
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Fort Ross
Click for Map
Sat -- 02:15 AM PST     Moonset
Sat -- 04:56 AM PST     5.69 feet High Tide
Sat -- 06:51 AM PST     Sunrise
Sat -- 12:20 PM PST     0.15 feet Low Tide
Sat -- 12:33 PM PST     Moonrise
Sat -- 06:00 PM PST     Sunset
Sat -- 07:21 PM PST     4.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.83.44.14.95.55.75.44.73.72.51.30.50.20.20.71.42.33.13.74.14.13.73.32.9

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Sat -- 12:30 AM PST     0.00 knots Slack
Sat -- 02:16 AM PST     Moonset
Sat -- 03:28 AM PST     0.68 knots Max Flood
Sat -- 06:21 AM PST     -0.00 knots Slack
Sat -- 06:52 AM PST     Sunrise
Sat -- 09:40 AM PST     -1.26 knots Max Ebb
Sat -- 12:33 PM PST     Moonrise
Sat -- 01:49 PM PST     0.00 knots Slack
Sat -- 04:52 PM PST     0.94 knots Max Flood
Sat -- 06:01 PM PST     Sunset
Sat -- 08:12 PM PST     -0.00 knots Slack
Sat -- 10:21 PM PST     -0.61 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.10.10.40.70.70.50.1-0.3-0.8-1.2-1.2-1.1-0.8-0.40.10.60.90.90.80.50.1-0.4-0.6-0.6

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 (3,6,7,8)
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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.