Thursday, June20, 2019 L-36.com


Marine Weather and Tides
Geyserville, CA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:45AMSunset 8:39PM Wednesday June 19, 2019 10:51 PM PDT (05:51 UTC) Moonrise 9:50PMMoonset 6:51AM Illumination 93% 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 845 Pm Pdt Wed Jun 19 2019
.small craft advisory in effect from 3 am pdt Thursday through late Thursday night...
Tonight..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 4 to 5 ft. NW swell 7 to 9 ft at 11 seconds.
Thu..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 5 to 6 ft. NW swell 8 to 10 ft at 11 seconds.
Thu night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 7 to 8 ft. NW swell 9 to 11 ft at 11 seconds.
Fri..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 7 to 8 ft. NW swell 9 to 11 ft at 11 seconds.
Fri night..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 9 to 11 ft at 11 seconds.
Sat..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves around 3 ft. NW swell 7 to 9 ft.
Sun..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 8 to 10 ft.
PZZ500 845 Pm Pdt Wed Jun 19 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will persist along the coast south of point reyes through tomorrow as northerly winds increase across the northern outer waters tonight. Gale force gusts will be possible starting tonight over the outer waters north of point reyes through at least tomorrow night. Elevated winds will become more widespread, mainly over the outer waters, tomorrow through Friday. These winds will result in steep fresh swell creating hazardous seas conditions, especially for smaller vessels.


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


Area Discussion for - Sacramento, CA
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Fxus66 ksto 192232
afdsto
area forecast discussion
national weather service sacramento ca
332 pm pdt Wed jun 19 2019

Synopsis
A slow cooling trend expected through the end of the week as a low
pressure system drops through the pacific northwest. Daytime
temperatures down to near or below normal Thursday and Friday.

Breezy north winds behind the departing low pressure system will
bring elevated fire weather concerns at the end of the week.

Warmer than normal over the weekend with cooling again next week.

Discussion
A stout 595-dm mid-level ridge currently sits just east of the
140w longitude line, roughly 2 standard deviations above
climatology. The eastern extent of this anticyclone has slowly
buckled in response to a weak shortwave passing through the upper
intermountain west. While today's temperatures remain above
average, they have decreased several degrees in some locations
relative to Tuesday. Given semi-persistent dry, northerly winds
over the northern sacramento valley, temperatures around the
century mark have been commonplace. With these wind fields
continuing into the overnight hours, minimal cool down is
anticipated. This would be similar to previous nights which
supported a couple near daily records for nighttime warmth.

Heading south, an active delta breeze has cooled off locations
closer to the i-80 corridor with highs in the low 90s accompanied
by dew points in the upper 50s low 60s.

On Thursday, a more potent shortwave sweeps through eastern
oregon southern idaho which brings modest height falls through
northern california. On its heels will be a secondary feature
primed to scoot through western nevada Friday afternoon. While the
dry, northerly winds should pick up with the initial impulse, they
further strengthen on Friday with gusts possibly reaching 30 to
40 mph over the central northern sacramento valley. This
combination of dry, northerly gusts on top of curing grasses will
enhance fire weather concerns. A fire weather watch remains in
effect from Thursday afternoon through Saturday afternoon. Please
read fire weather related products for more information.

Temperatures on Thursday and Friday will be near average for
mid-june as cooler 1000-500 mb thicknesses accompany the trough
passages. The delta breeze should remain active on Thursday which
will keep temperatures down in the low to possibly mid 80s from
the vicinity of travis afb eastward to sacramento. By Friday, most
of the region can expect dry, northerly flow with temperatures
warming up a few degrees back to the mid upper 80s in most valley
locations. A continued warming trend is likely for the weekend
given a transient ridge tracking through the region. Any
discernible convective chances appear to be on Friday across the
sierra given the shortwave passage. However, the guidance has
generally downplayed this so have kept the forecast dry. ~bro
.Extended discussion (Sunday through Wednesday)
the eastern pacific ridge will weaken as a low off the coast of
western canada will drive southward along the pacific northwest
coast. Ensemble runs are in good agreement the closed low will
settle just offshore near the washington oregon coast. However,
strong troughing associated with this low will work into our
forecast region by the start of the next work week and will
continue to influence our region into late next week. This means a
cooling trend is in store for the region next week. In addition
to synoptic cooling associated with this trough, upper level flow
patterns support onshore flow. This could bring ocean cooled air
inland and spread it through much of interior northern california
by Tuesday Wednesday. Delta influenced areas will likely see the
greatest cooling and breeziest conditions. High temperatures are
expected to drop to 5 - 10 degrees below average on Wednesday for
most of the forecast region. Highs across much of the valley are
only expected to reach into the mid 80s Wednesday with mountain
highs in the 60s to 70s. Sll

Aviation
Vfr sky clear conditions though 0000 utc Friday except for local
MVFR ceilings in delta area between 1000 - 1800 utc Thursday.

Increasing northerly surface wind Thursday after 1800 utc with
gusts 25 - 30 kts for the NRN sacramento valley. Winds expected to
continue after 0000 utc Friday, expanding into the srn
sacramento valley and sierra foothills with local gusts 30 - 40
kts.

Sto watches warnings advisories
Fire weather watch from Thursday afternoon through Saturday
morning for central sacramento valley in glenn, colusa, yuba,
northern sutter, and butte county below 1000 ft-eastern
mendocino nf-eastern portion of shasta trinity nf-northern
sacramento valley to southern tehama county line below 1000 ft-
northern sierra foothills from 1000 to 3000 ft. Includes
portions of shasta-trinity and butte units-southeast edge shasta-
trinity nf and western portions of tehama-glenn unit-southern
sacramento valley in yolo-sacramento far western placer,
southern sutter and solano county below 1000 ft.



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 mi31 min Calm G 1.9 56°F1013.4 hPa
ANVC1 - 9416841 - Arena Cove, CA 40 mi51 min E 2.9 G 2.9 52°F 55°F1013.5 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 49 mi57 min 58°F1013.5 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 mi58 minSSE 710.00 miOvercast57°F54°F90%1012.4 hPa

Wind History from STS (wind in knots)
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Last 24hrSE5S5SW3CalmS3SW3W54W6SW3W7NW3SE6S9S8S10S9S11S9S11S11SE9S9S7
1 day agoCalmS3CalmCalmCalmNW3CalmCalmCalmS4S5S5S5S8S11S9S11SE11S11S9SE9SE9S8SE6
2 days agoSE6SE5CalmCalmCalmCalmCalmCalmSE4S3CalmCalmSE456S8S9S9S10SE8S10S7S7SE6

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Thu -- 12:34 AM PDT     5.47 feet High Tide
Thu -- 05:48 AM PDT     Sunrise
Thu -- 07:50 AM PDT     -0.71 feet Low Tide
Thu -- 08:49 AM PDT     Moonset
Thu -- 03:02 PM PDT     4.47 feet High Tide
Thu -- 07:58 PM PDT     2.96 feet Low Tide
Thu -- 08:40 PM PDT     Sunset
Thu -- 11:29 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.45.4542.71.30.2-0.5-0.7-0.30.51.52.63.54.24.54.33.93.43.133.13.64.2

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Thu -- 01:58 AM PDT     -0.00 knots Slack
Thu -- 05:21 AM PDT     -1.39 knots Max Ebb
Thu -- 05:49 AM PDT     Sunrise
Thu -- 08:49 AM PDT     Moonset
Thu -- 09:22 AM PDT     0.00 knots Slack
Thu -- 12:25 PM PDT     1.05 knots Max Flood
Thu -- 03:53 PM PDT     -0.00 knots Slack
Thu -- 05:59 PM PDT     -0.60 knots Max Ebb
Thu -- 08:40 PM PDT     Sunset
Thu -- 09:17 PM PDT     0.00 knots Slack
Thu -- 11:30 PM PDT     Moonrise
Thu -- 11:58 PM PDT     0.61 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.4-0-0.5-1.1-1.4-1.3-1-0.7-0.20.30.8110.80.4-0.1-0.5-0.6-0.5-0.3-0.10.20.5

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 (1,6,7,8)
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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.