Thursday, June22, 2017 L-36.com


Marine Weather and Tides
Sea Ranch, CA

Version 3.4
What's New / NOTES
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 5:45AMSunset 8:44PM Thursday June 22, 2017 4:48 PM PDT (23:48 UTC) Moonrise 3:45AMMoonset 6:15PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 237 Pm Pdt Thu Jun 22 2017
Tonight..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft at 11 seconds. Patchy fog after midnight.
Fri..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft at 10 seconds. Patchy fog in the morning.
Fri night..SW winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds. Patchy fog after midnight.
Sat..W winds 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 5 ft at 10 seconds and sw 3 ft at 16 seconds. Patchy fog in the morning.
Sat night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 10 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 3 ft...becoming 2 ft or less. NW swell 3 ft.
Mon..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 3 ft.
PZZ500 237 Pm Pdt Thu Jun 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... As surface high pressure lifts northward, winds will continue to be light and southerly this evening and through Friday. In addition, seas will subside through the remainder of the week and into the weekend. Winds are expected to be moderate to strong during the afternoon and early evening hours around the golden gate and angel island areas over the next few days.

7 Day Forecast for Marine Location Near Sea Ranch, CA
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location: 38.76, -123.54     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 222035
afdmtr
area forecast discussion
national weather service san francisco bay area
135 pm pdt Thu jun 22 2017

Hot weather continues inland this afternoon...

Synopsis Heat advisories and warnings are in place today
through 9 pm for dangerously hot temperatures. A shallow marine
layer along the central coast will keep the monterey bay coastal
areas much cooler. Temperatures will still be hot across the
interior for Friday, just not as hot as this afternoon. Additional
cooling will occur over the weekend.

Discussion As of 01:35 pm pdt Thursday... Dangerously hot
conditions are expected this afternoon parts of the area with
excessive heat warnings and heat advisories out. At noon hour,
there were multiple coop stations in the interior east bay
hills valleys that have exceeded the century mark, including
concord, walnut creek, pleasanton, and san ramon. These locations
are all under an excessive heat warning until 9 pm this evening as
temperatures rise to 105 to 107 degrees. It is not out of the
question that some isolated locations reach 110 degrees in the
interior east bay or even the north bay mountains.

Virtually all major ASOS airports are reporting warmer conditions
than they were at this time yesterday. As of 1 pm, the north bay
is running anywhere from 5 to 15 degrees than 24 hours ago, the
east bay anywhere from 8 to 15 degrees warmer, and the south bay
is running about 5 to 15 degrees warmer. Overall, these
temperatures will translate to afternoon highs that are anywhere
from 15 to perhaps as high as 25 degrees above climatological
normals for late june.

The culprits for this prolonged heatwave are two massive upper
level highs that are residing over the desert southwest and
several hundred miles off the northern california coast. Our area
of california is currently straddled between these two high
pressure systems. What does this exactly mean? Well, while it is
very hot outside for interior areas, it would be even hotter if
one of these high pressure centers were have picked up residence
on top of our area.

The good news is that today should be the hottest day. The high
over the pacific is progged to move onshore toward the
oregon washington coast through Friday with 500 mb heights
gradually falling over our area. This will translate to afternoon
temperatures dropping anywhere from 5 to 15 degrees for tomorrow
afternoon for interior areas. While temperatures will fall from
today to tomorrow, we aren't completely free of any heat risks
quite yet. In fact, temperatures will still be hot enough to
warrant a heat advisory for the interior east bay hills valleys,
interior san benito county including pinnacles national park, and
the santa lucia range in monterey county. This advisory will begin
at 9 pm pdt Thursday (04z Friday) as soon as the excessive heat
warning expires, and continue for 24 hours until late Friday
evening.

On Saturday temperatures will perhaps drop another few degrees as
an upper level low begins to nudge toward the calfornia coast.

There could be some mid upper-level moisture that advects from the
south southeast that may bring isolated thunder to our east in
the sierra nevada. Probabilty of precipitation may have to
increase over our area if future model runs continue to push the
moisture toward the central coast.

Early next week the upper low will push onshore and help to
flatten the desert southwest ridge. Temperatures will finally
return closer to normal with highs back to low 80s to low 90s for
the interior east bay and south bay. There is even the possibility
that areas could be several degrees below normal by Tuesday.

Again, going back to today, dangerously hot weather is here for
locations away from the coast. While a much welcomed cool down is
will begin tomorrow, temperatures will still be elevated enough to
present heat impacts, especially to those sensitive to the heat.

Take the necessary precautions to beat the heat: drink plenty of
fluids, limit outdoor activity during the hottestm time of the
day, wear light-colored clothing, put on a hat. If you don't have
air conditioning, consider going to a community cooling center, a
shopping center mall, or movie theater. If you're parked in the
shade, or even if you're at the coast with outdoor temperatures in
the 60s: never leave children, pets, or adults alone in a parked
vehicle. Stay safe, stay hydrated, and beat the heat.

Aviation As of 10:44 am pdt Thursday... For 18z tafs.VFR at
all TAF sites at this hour. Visible satellite shows a southerly
surge of stratus along the central california coast, but
struggling to push north of the santa cruz san mateo coast due to
the presence of subsident dry air from high pressure aloft that is
compressing the marine layer. Therefore, clear skiesVFR expected
to continue through this evening and through the forecast period
for bay area terminals. Current thinking is stratus will return
for monterey bay terminals tonight. Generally light, occasionally
breezy onshore winds this afternoon and evening. For tonight,
mostly clear skies with some stratus primarily banked up along the
monterey expected.

Moderate to high forecast confidence.

Vicinity of ksfo...VFR. Patchy haze possible during the morning
hours Friday. Light winds becoming breezy by this afternoon, up to
15 kt.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR through this afternoon, with ifr lifr
cigs likely returning later this evening. Low confidence on
duration. Light westerly northwesterly winds.

Fire weather As of 4:06 am pdt Thursday... The most critical
areas this morning will be the hills of the north bay, especially
napa county and around mt st helena where winds above 2000 feet
will be northeast and gusting 20-25 mph. Humidity values are
starting to drop down to 20-30% in the hills as of 3 am with hot
temperatures in the 80s and lower 90s at this early hour. Expect a
hot and dry day all inland areas and hills today. Main concern
this afternoon will be a transition to westerly winds should any
new starts occur.

Although onshore flow will return by tonight, the marine layer
will remain shallow and the airmass aloft will remain very warm
for a few more days. Thus, conditions in the hills will only
gradually improve from Friday through the weekend. Much improved
conditions are expected by early next week.

Climate
Here is a list of record high temperatures
sf bay area Thursday
location... ... ... ... ... ..Temp year
kentfield... ... ... ... ... .102 1989
san rafael... ... ... ... ... .99 2006
napa... ... ... ... ... ... ... 105 1981
san francisco... ... ... ... .97 1989
sfo airport... ... ... ... ... 98 1989
oakland airport... ... ... ..94 1957
richmond... ... ... ... ... ... 94 1989
livermore... ... ... ... ... .110 1961
moffett field... ... ... ... .99 1989
san jose... ... ... ... ... ..101 1989
gilroy... ... ... ... ... ... .110 1973
monterey bay area Thursday
location... ... ... ... .. Temp year
salinas... ... ... ... ... ... .89 1981
salinas airport... ... ... ..92 1947
king city... ... ... ... ... .110 1929

Marine As of 01:32 pm pdt Thursday... A small craft advisory has
been added for the northern san francisco bay west delta this
afternoon through early evening. Westerly winds will be gusty
through the golden gate to angel island area, as well as suisun
bay. Split flow with moderate northwest winds primarily over the
northern outer waters with lighter southwest winds elsewhere.

Hazardous seas from steep wind waves and fresh swell can be
expected over the outer waters through the day. Look for
gradually improving conditions late today through the remainder
of the week.

Mtr watches warnings advisories
Tngt Heat advisory... Caz506-508-513-516
heat advisory... Caz518
excessive heat warning... Caz507-510>512-517
heat advisory... Caz510-511-517
sca... Pt arena to pigeon pt 10-60 nm until 9 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm until 3 pm
sca... Sf bay until 9 pm
public forecast: rowe
aviation: bam
marine: bam
fire weather: rww
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 14 mi48 min SSW 7 G 14 60°F 51°F1008.9 hPa (+0.0)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 38 mi38 min SE 5.8 G 7.8 56°F 51°F1008.9 hPa54°F
46014 - PT ARENA - 19NM North of Point Arena, CA 40 mi38 min S 3.9 G 7.8 56°F 1008 hPa53°F

Wind History for Arena Cove, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA32 mi1.9 hrsE 410.00 miFair109°F52°F15%1004.4 hPa

Wind History from UKI (wind in knots)
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Last 24hrNW7SE4N6N6CalmCalmNW3CalmCalmCalmN3CalmCalmCalmCalmCalm3CalmE4E4SE44E4W9
1 day agoN8N8N7N6CalmN4N3NW3NW4NW3CalmCalmCalmCalmCalmCalmCalm3CalmSE4Calm--W9W8
2 days agoCalmN11
G15
N8W4CalmCalmCalmCalmNW3W3W3CalmNW3N3CalmN4N536N8N12N11NW7NW8

Tide / Current Tables for Arena Cove, Pacific Ocean, California
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Arena Cove
Click for Map
Thu -- 04:29 AM PDT     -1.17 feet Low Tide
Thu -- 04:45 AM PDT     Moonrise
Thu -- 05:49 AM PDT     Sunrise
Thu -- 10:58 AM PDT     4.35 feet High Tide
Thu -- 03:52 PM PDT     1.87 feet Low Tide
Thu -- 07:16 PM PDT     Moonset
Thu -- 08:43 PM PDT     Sunset
Thu -- 10:06 PM PDT     6.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.32.61-0.4-1.1-1.1-0.40.72.13.34.14.44.13.42.72.11.92.23.14.35.56.576.7

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Thu -- 01:37 AM PDT     -1.66 knots Max Ebb
Thu -- 04:45 AM PDT     Moonrise
Thu -- 05:32 AM PDT     0.00 knots Slack
Thu -- 05:50 AM PDT     Sunrise
Thu -- 08:34 AM PDT     1.31 knots Max Flood
Thu -- 11:53 AM PDT     -0.00 knots Slack
Thu -- 02:11 PM PDT     -0.88 knots Max Ebb
Thu -- 05:22 PM PDT     0.00 knots Slack
Thu -- 07:16 PM PDT     Moonset
Thu -- 08:17 PM PDT     1.05 knots Max Flood
Thu -- 08:44 PM PDT     Sunset
Thu -- 11:08 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.1-1.6-1.6-1.4-0.9-0.40.30.91.31.310.6-0.1-0.6-0.9-0.8-0.5-0.20.30.8110.60.1

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 San Francisco/Monterey Bay Area, CA (19,4,5,8)
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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.