Friday, May24, 2019 L-36.com


Marine Weather and Tides
Jenner, 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 5:51AMSunset 8:25PM Friday May 24, 2019 9:58 AM PDT (16:58 UTC) Moonrise 12:00AMMoonset 10:01AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 822 Am Pdt Fri May 24 2019
.small craft advisory in effect from this evening through late tonight...
.gale warning in effect from late tonight through Saturday morning...
Today..SE winds 5 to 15 kt...becoming sw this afternoon. Wind waves 2 ft or less. NW swell 6 to 8 ft at 10 seconds...subsiding to 5 to 6 ft at 10 seconds this afternoon.
Tonight..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 6 to 7 ft. NW swell 5 to 7 ft at 9 seconds.
Sat..NW winds 20 to 30 kt. Wind waves 6 to 7 ft. NW swell 9 to 10 ft at 10 seconds.
Sat night..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 8 to 9 ft. NW swell around 10 ft at 10 seconds.
Sun..NW winds 20 to 30 kt. Wind waves 6 to 7 ft. NW swell 8 to 9 ft at 10 seconds. A slight chance of showers.
Sun night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 7 to 9 ft at 9 seconds.
Memorial day..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft.
Tue..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves around 3 ft. NW swell 3 to 4 ft and sw around 3 ft.
PZZ500 822 Am Pdt Fri May 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly flow will prevail near the coast and with northerly flow over the outer waters today. Low pressure will move inland over the great basin Friday night through the weekend and lead to gusty northwest winds over the coastal waters. Moderate northwest swell will continue through the weekend with steep fresh swell generated by the gusty winds.


7 Day Forecast for Marine Location Near Jenner, CA
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location: 38.35, -123.35     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 241632
afdmtr
area forecast discussion
national weather service san francisco bay area
932 am pdt Fri may 24 2019

Synopsis Mainly dry conditions are forecast through Saturday,
along with continued cooler than normal temperatures.

Unseasonably cool and unsettled conditions are forecast to develop
later in the weekend as a system drops in from the north, with
scattered showers and isolated thunderstorms possible on Sunday.

Dry weather should return by memorial day, but temperatures will
remain cool into early next week.

Discussion As of 9:32 am pdt Friday... Low clouds blanket much
of the san francisco bay area this morning. The few locations
without cloud cover this morning include parts of the santa clara
valley as well as the southern stretches of the salinas valley.

1-minute goes-west visible imagery even is capturing a well-
defined circulation in the marine stratus off the coast of point
reyes (check out our twitter feed for the loop). Temperatures are
generally running within a few or several degrees of what they
were at this time 24 hours ago, though santa rosa is an exception
to this where it is presently running 6 degrees cooler (largely
thanks to this morning's clouds). High temperatures will be
similar to what we saw yesterday: 60s along the coast and 70s for
inland communities. No plans to make any updates to the short-term
grids at this time. For additional forecast details, please refer
to the previous discussion section.

Prev discussion As of 3:38 am pdt Friday... The shower activity
from last evening has ended, although moderate drizzle is
occuring along the coast, especially around the monterey
peninsula. Aside from this coastal drizzle in the morning, today
is expected to be dry with more Sun and slightly warmer
temperatures compared to yesterday. Similar conditions are
expected on Saturday.

Another upper low center is then forecast to affect the area on
Sunday as it drops south along the coast. Models are coming into
better agreement concerning the placement of this low, and it is
looking pretty plausible to see showers once again on Sunday.

Latest guidance focuses the main area of precip over the southern
and western-most portions of the district, mainly from marin
county south. In addition to showers, there is the potential for
isolated thunderstorms on Sunday, again mainly across the southern
half of our forecast area, closer to the upper low center.

Rainfall totals with this weekend's system will depend on the
exact track of the system and how far west the low tracks. Snow
levels will also depend upon the track of the low center. The
latest forecast keeps snow levels above 5000 feet, so any snow
fall would occur over the highest peaks in the santa lucias.

Temperatures on Sunday are forecast to be as much as 20 degrees
below normal.

The upper low is forecast to move well off to the southeast of
our area by Monday. Thus, dry weather is expected to return by
memorial day. Temperatures will warm slightly on Monday, but still
remain well below normal. Cool conditions are expected through the
remainder of the week as a broad upper level trough remains over
the west.

Aviation As of 5:05 am pdt Friday... Southerly to
southwesterly flow continues along the coast. Downsloping has kept
sfo and sjc inVFR overnight while other sites are experiencing
MVFR cigs. Satellite indicates little expansion of the stratus in
the past few hours with a large hole in the stratus advecting up
the coast from the south west of monterey bay. Southerly flow
expected to weaken this morning and turn westerly by this
afternoon. Southerly flow may keep sts in MVFR CIGS into the early
afternoon while sfo and sjc may see predominantlyVFR through the
morning and into the afternoon. Expecting onshore winds of 10-15
kt this afternoon at most sites.

Vicinity of ksfo...VFR most likely to prevail over the terminal
through the morning. Stratus over oak has shown little westward
expansion towards sfo overnight. If southerly flow weakens may see
a brief period of MVFR CIGS this morning. Light southerly winds
will turn westerly 10-15 kt this afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR CIGS this morning with occasional
drizzle possible. Latest satellite trends a hole in the stratus
and drier air moving north along the coast. Some of this drier air
may work its way into the terminals and cause an earlier burn off
of stratus than indicated in the taf. Will continue to monitor
this development.

Marine As of 8:17 am pdt Friday... Southerly flow will prevail
near the coast and with northerly flow over the outer waters
today. Low pressure will move inland over the great basin Friday
night through the weekend and lead to gusty northwest winds over
the coastal waters. Moderate northwest swell will continue through
the weekend with steep fresh swell generated by the gusty winds.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm from 3 pm
public forecast: sims
aviation: st
marine: st
visit us at

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 8 mi48 min ESE 5.8 G 7.8 51°F1017.3 hPa
46214 - Point Reyes, CA (029) 28 mi58 min 54°F9 ft
PRYC1 - 9415020 - Point Reyes, CA 31 mi46 min 57°F1017 hPa
ANVC1 - 9416841 - Arena Cove, CA 43 mi40 min S 1.9 G 2.9 52°F 50°F1017.9 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 49 mi48 min SW 7.8 G 9.7 54°F 55°F1017.9 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA31 mi65 minN 08.00 miOvercast55°F52°F90%1016.4 hPa

Wind History from STS (wind in knots)
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Last 24hrCalm5S6S8S9S6S7S10S9S10SE9S9S9S8S8
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2 days agoW11W10
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NW9W7W3W3W5W6W5S3CalmS4SE3CalmCalmNW4N7

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Fri -- 12:54 AM PDT     Moonrise
Fri -- 02:31 AM PDT     4.67 feet High Tide
Fri -- 05:54 AM PDT     Sunrise
Fri -- 09:52 AM PDT     -0.19 feet Low Tide
Fri -- 11:00 AM PDT     Moonset
Fri -- 05:21 PM PDT     4.30 feet High Tide
Fri -- 08:25 PM PDT     Sunset
Fri -- 10:44 PM PDT     2.93 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.84.34.64.64.33.52.51.40.5-0-0.20.10.71.62.53.344.34.243.63.232.9

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Fri -- 12:54 AM PDT     Moonrise
Fri -- 01:18 AM PDT     0.44 knots Max Flood
Fri -- 03:53 AM PDT     -0.00 knots Slack
Fri -- 05:54 AM PDT     Sunrise
Fri -- 07:21 AM PDT     -1.08 knots Max Ebb
Fri -- 11:01 AM PDT     Moonset
Fri -- 11:31 AM PDT     0.00 knots Slack
Fri -- 02:41 PM PDT     0.82 knots Max Flood
Fri -- 06:11 PM PDT     -0.00 knots Slack
Fri -- 08:12 PM PDT     -0.45 knots Max Ebb
Fri -- 08:26 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.40.2-0-0.4-0.8-1.1-1-0.8-0.5-0.20.20.60.80.80.70.50.1-0.3-0.4-0.4-0.3-0.2

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (12,3,4,5)
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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.