Monday, May20, 2019 L-36.com


Marine Weather and Tides
Boonville, 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 5:53AMSunset 8:24PM Monday May 20, 2019 2:26 PM PDT (21:26 UTC) Moonrise 9:29PMMoonset 6:30AM Illumination 97% 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- 216 Pm Pdt Mon May 20 2019
.small craft advisory in effect through Tuesday evening...
Rest of today..W winds 5 to 15 kt. Wind waves around 3 ft. W swell 6 to 8 ft at 12 seconds.
Tonight..W winds 15 to 20 kt with gusts up to 25 kt. Wind waves 4 to 5 ft. W swell 6 to 8 ft at 11 seconds. Rain.
Tue..NW winds 20 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 10 to 12 ft at 13 seconds. A chance of rain.
Tue night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 13 to 15 ft at 14 seconds. A chance of rain.
Wed..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 6 to 7 ft. W swell 12 to 14 ft at 12 seconds.
Wed night..NW winds 25 to 35 kt. Wind waves 5 to 6 ft. NW swell 11 to 13 ft at 11 seconds.
Thu..NW winds 10 to 20 kt. Wind waves around 3 ft. NW swell 9 to 11 ft.
Fri..NW winds 5 to 15 kt. Wind waves around 3 ft. NW swell 4 to 6 ft.
PZZ500 216 Pm Pdt Mon May 20 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak weather system will pass through overnight into Tuesday. This will allow northwest winds to increase later this evening and into Tuesday. Building nw swell will pass through the waters and combine with fresh seas to produce hazardous seas later Tuesday into Wednesday. Behind the front strong winds will likely persist at least into Wednesday with gale force gusts possible. Moderate nw wind and seas will continue through the end of the week and into the upcoming holiday weekend.


7 Day Forecast for Marine Location Near Boonville, CA
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location: 38.89, -123.38     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 201220
afdeka
area forecast discussion
national weather service eureka ca
520 am pdt Mon may 20 2019

Synopsis Another spring storm will generate widespread showers
and high mountain snow above 5500 feet tonight through Tuesday.

Blustery westerly and northwesterly winds are also expected,
especially over the exposed higher elevations and mountain peaks.

Drier weather and brisk northerly winds are expected around mid week.

Discussion Today will be mostly dry as a weak shortwave ridge
transitions across the area this morning. Another vigorous upper
trough will rapidly approach the north coast this afternoon and
generate some precip late in the day. Widespread showers will
then overspread the region this evening as a 130kt westerly jet
dips southward across northern california. Moist westerly flow
will be favorable for upslope precipitation generation in the
hills and mountains of humboldt and del norte counties. The
greater eureka area will receive more prolific rain fall with this
system compared to the weekend storm that went south. Moist
westerly flow, widespread showers and blustery westerly winds will
persist into Tuesday. Cold air aloft will also create an
environment favorable for thunderstorms. The best chances appear
to be along the del norte county coast tonight where a shortwave
trough amplifies off the oregon coast. Be ready for wet and
occasional blustery weather through Tuesday. Also, if headed to
the high country, be ready for some heavy wet snow. A foot of snow
will be possible above 5500 feet in the trinity mountains tonight
through Tuesday.

The spell of wet weather and below normal interior temperatures
will moderate around mid week as the flow aloft amplifies. A
large closed low aloft will shift to our south and southeast while
high pressure builds toward the west coast. This pressure pattern
will be a good setup for gusty northerly winds at the coast and
over the mountain peaks. The blend, naefs and ECMWF ens indicate
another shortwave trough dropping southward over the area next
weekend. This shortwave may put a damper on the warming and
produce additional shower activity, primarily over the interior.

Aviation Low clouds have expanded across much of the interior, as
well as along portions of the redwood coast and the adjacent coastal
waters. Ceiling heights are presently running around 1500 ft, and
minimal visibility reductions are noted. Clouds are forecast to thin
later this morning with daytime heating, but an approaching frontal
system will bring increasing clouds back into the picture by mid
afternoon and light rain by evening.

Winds are expected to be generally light through much of the day,
but low-level S to SW winds will increase before sunset with the
potential for gusty surface winds and or some low-level wind shear.

Sec

Marine Winds will back and become southerly today ahead of
another approaching frontal system. Wind speeds will reach advisory
levels over at least the N waters by late today, with winds shifting
to NW on Tuesday. Northerlies will continue to increase through mid-
week with gale force gusts possible.

In additions to increasing short period local wind waves, larger w
mid-period swell will build into the waters tonight and early
Tuesday, with combined seas peaking near 20 ft. Have continued the
hazardous seas watch for the S outer waters starting around midnight
tonight. This will probably be upgraded to a warning later today.

Surf heights along the NW california coast will approach 20 ft as
well, just below high surf advisory criteria. Sec

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 3 pm this afternoon to 3 am pdt Friday
for pzz450.

Small craft advisory from 3 pm this afternoon to 9 am pdt Friday
for pzz470.

Small craft advisory from 3 am Tuesday to 3 am pdt Friday for
pzz455.

Small craft advisory from 9 pm this evening to 3 am pdt Tuesday
for pzz475.

Hazardous seas watch from late tonight through late Tuesday
night for pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 18 mi38 min WSW 5.1 G 6 54°F 55°F1016.2 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 39 mi36 min S 5.8 G 7.8 55°F 55°F9 ft1015.2 hPa53°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 45 mi36 min W 9.7 G 12 56°F8 ft1016.3 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA20 mi30 minVar 610.00 miPartly Cloudy66°F39°F37%1013.2 hPa

Wind History from UKI (wind in knots)
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Last 24hrS7SE8S9
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S8SE7S3CalmCalmCalmCalmCalmCalmCalmCalmCalmS4CalmCalmCalmSE4S4CalmCalm
1 day agoS10S8S9
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S5S9S6S6S4S43SW4CalmCalmCalmNW3N3CalmW4CalmNE34S36S8
2 days agoCalmN546NW9W4SE73S3CalmW3CalmCalmCalmCalmE3CalmCalmCalmS6CalmCalmCalm3

Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Mon -- 05:58 AM PDT     Sunrise
Mon -- 07:02 AM PDT     -1.25 feet Low Tide
Mon -- 07:31 AM PDT     Moonset
Mon -- 01:54 PM PDT     4.65 feet High Tide
Mon -- 06:53 PM PDT     2.60 feet Low Tide
Mon -- 08:25 PM PDT     Sunset
Mon -- 10:30 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.25.84.83.31.60.1-0.9-1.2-0.9-01.12.43.64.44.64.43.93.22.72.62.93.64.55.3

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Mon -- 12:53 AM PDT     -0.00 knots Slack
Mon -- 04:09 AM PDT     -1.58 knots Max Ebb
Mon -- 05:58 AM PDT     Sunrise
Mon -- 07:31 AM PDT     Moonset
Mon -- 08:05 AM PDT     0.00 knots Slack
Mon -- 11:08 AM PDT     1.23 knots Max Flood
Mon -- 02:32 PM PDT     -0.00 knots Slack
Mon -- 04:45 PM PDT     -0.75 knots Max Ebb
Mon -- 08:00 PM PDT     0.00 knots Slack
Mon -- 08:25 PM PDT     Sunset
Mon -- 10:30 PM PDT     Moonrise
Mon -- 10:45 PM PDT     0.80 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.5-0.1-0.7-1.3-1.6-1.5-1.1-0.7-0.10.611.21.10.80.3-0.3-0.7-0.7-0.6-0.300.40.70.8

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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Wind Forecast for Eureka, CA (17,4,5,8)
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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.