Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Capitola, CA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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 6:30AMSunset 7:50PM Friday August 23, 2019 9:47 PM PDT (04:47 UTC) Moonrise 11:32PMMoonset 1:03PM Illumination 39% Phase: Third Quarter Moon; Moon at 23 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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PZZ535 Monterey Bay- 934 Pm Pdt Fri Aug 23 2019
Tonight..SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. W swell 3 to 5 ft at 10 seconds, decreasing to 2 to 3 ft at 10 seconds after midnight. SWell sw around 2 ft.
Sat..W winds 5 to 10 kt. W swell 2 to 3 ft at 10 seconds and sw around 2 ft at 16 seconds.
Sat night..W winds around 5 kt. Wind waves 1 to 2 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds.
Sun..W winds 10 to 15 kt. Wind waves 0 to 1 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds.
Sun night..W winds 5 to 10 kt. W swell 2 to 4 ft at 12 seconds and S around 2 ft at 14 seconds.
Mon..W winds 10 to 15 kt. Mixed swell W 2 to 4 ft at 12 seconds and S around 2 ft at 13 seconds.
Mon night..W winds around 5 kt. W swell 2 to 4 ft at 11 seconds and sw around 2 ft at 12 seconds.
Tue..SW winds 5 to 10 kt. Mixed swell W 2 to 3 ft and S around 2 ft.
Wed..SW winds 5 to 10 kt. W swell around 2 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 934 Pm Pdt Fri Aug 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will continue to diminish across the coastal waters through tonight with strongest winds remaining over the northern outer waters. Steep, short period northwesterly swells will also diminish tonight and through the weekend with period becoming 7 to 8 seconds. Southwesterly winds are forecast over the near shore coastal waters this weekend. A moderate southerly swell will arrive on Sunday and persist through early next week with light northwesterly swell continuing through the period.


7 Day Forecast for Marine Location Near Capitola, CA
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location: 36.97, -121.94     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 240355
afdmtr
area forecast discussion
national weather service san francisco bay area
855 pm pdt Fri aug 23 2019

Synopsis Little change is forecast through the first half of
the weekend. A modest warming trend is then expected from Sunday
into Monday as high pressure strengthens over california. The
ridge will weaken slightly by Tuesday and Wednesday as the
remnants of tropical storm ivo pass west of the golden gate. Ivo
remnants may bring increasing mid and high clouds and more
humidity to the region next week.

Discussion As of 8:55 pm pdt Friday... The combination of a
deeper marine layer and southerly low level flow resulted in
cooling across most of our region today. Today's cooling was most
pronounced in the north bay valleys where south winds enhanced the
inland transport of marine air. Highs in the north bay valleys
today were as much as 15 degrees cooler than yesterday. Similarly,
santa cruz on the north side of monterey bay cooled by 11
degrees. By contrast, today's high of 80 in monterey was 10
degrees warmer than yesterday due to downslope flow off the santa
lucia mountains to the south.

An upper level ridge currently dominates the eastern pacific
between 30 and 40 degrees north latitude, and extends eastward
across california. The models agree that the ridge will gradually
strengthen over california through the weekend and into the early
part of next week. However, warming due to the strengthening ridge
will likely be tempered over the weekend by continued southerly
low level flow. In fact, most model guidance indicates little
change in temperatures on Saturday. Modest warming is then likely
on Sunday and especially Monday as the marine layer compresses
and southerly flow tapers off and gradually veers more to the west
and northwest. Even with the expected warming on Sunday and
Monday, heat risk is projected to only rise into the moderate
category across our inland areas, with just a few pockets of high
heat risk expected in the inland hills where temperatures will
remain warm during the overnight hours. Persistent onshore flow
will keep heat risk mostly in the low category in coastal areas.

The upper ridge axis is forecast to shift to our east by Tuesday
as remnants of tropical storm ivo drift north offshore. There
remains quite a bit of uncertainty as to the exact trajectory of
ivo's moisture, but current model consensus indicates that the
bulk of the moisture will remain offshore from the bay area as it
drifts north, and then shift eastward and inland across northwest
california sometime between Tuesday afternoon and Wednesday
morning. The 12z ECMWF forecasts some of this mid upper level
moisture clipping at least the northern half of our forecast area
late Tuesday. Will need to continue to monitor this situation
closely as high-based thunderstorms and dry lightning are possible
in conjunction with this tropical moisture.

A gradual cooling trend is forecast during the second half of next
week as the upper ridge continues to drift slowly to our east.

Aviation As of 5:46 pm pdt Friday... Plenty of momentum and
kick to a southerly surge driven by a recently strong smx-sfo
pressure gradient. Visible satellite imagery of the coastal
stratus shows a turbulent flow along the boundary of south and
north winds and coastal terrain influences and lower level
turbulence is extending inland; 925 mb south winds ease tonight
but resume to gusty again Saturday, 850 mb south winds hold steady
tonight and Saturday based on WRF output. It'sVFR except areas
of coastal stratus resulting in ifr-MVFR ceilings from kwvi
northward to the sonoma county coast. Gusty onshore winds with
stratus reaching the east bay. Locally strong and gusty wind near
sausalito near 40 mph, a few reports of wind gusts nearing a
similar strength in san francisco. All in all, potential is there
for areas of low level wind shear extending into the mid evening
hours, will amend tafs as needed.

Surface winds mostly easing by late evening the exception to this
is lingering gusty winds from the golden gate and over the san
francisco bay. Stratus and fog will redevelop with some inland
extent tonight and Saturday morning. Ceilings then lift back to
vfr Saturday with potentially additional areas of low level wind
shear nearest the coast.

Vicinity of ksfo...VFR conditions will prevail with ifr MVFR cigs
likely to return after midnight tonight. Low confidence.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR then ifr ceilings tonight and Saturday
morning.VFR returning by late morning Saturday.

Marine As of 4:53 pm pdt Friday... Northwest winds will
continue to diminish across the coastal waters through tonight
with strongest winds remaining over the northern outer waters.

Steep, short period northwesterly swells will also diminish
tonight and through the weekend with period becoming 7 to 8
seconds. Southwesterly winds are forecast over the near shore
coastal waters this weekend. A moderate southerly swell will
arrive on Sunday and persist through early next week with light
northwesterly swell continuing through the period.

Mtr watches warnings advisories
Tngt Sca... Sf bay until 9 pm
public forecast: dykema
aviation: canepa
marine: cw
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MLSC1 - Moss Landing, South Harbor, CA 14 mi28 min NW 4.1 G 9.9 61°F 1012.2 hPa58°F
ELXC1 - Elkhorn Slough Reserve, CA 15 mi62 min NW 4.1 61°F 1011 hPa59°F
46092 - MBM1 16 mi37 min NNE 3.9 59°F 58°F1011.5 hPa (+0.8)
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi47 min 60°F3 ft
MEYC1 25 mi71 min 62°F1011.5 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 27 mi57 min 3.9 G 5.8 60°F 61°F8 ft1011 hPa (+0.7)
46114 - West Monterey Bay, CA 28 mi47 min 61°F8 ft
RTYC1 - 9414523 - Redwood City, CA 40 mi47 min NNW 6 G 8.9 64°F 76°F1011.1 hPa (+1.9)
46239 - Point Sur, CA (157) 44 mi47 min 60°F7 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA8 mi2.9 hrsW 910.00 miFair65°F55°F73%1011 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrE4E5CalmSW3CalmS4SE6NE4CalmS5W3NW33W6W10W13W13
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1 day agoSE3E4E4CalmSE4SE4E4E3CalmCalmCalmCalmSW3S6S7S6S9S9S7SE10SE10SE8SE7SE6
2 days agoCalmNW3CalmCalmN3N3CalmCalmCalmCalmCalmCalmS33SW6SW7SW66S8S6S7S6S5S5

Tide / Current Tables for Santa Cruz, Monterey Bay, California
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Santa Cruz
Click for Map
Sat -- 12:32 AM PDT     Moonrise
Sat -- 06:32 AM PDT     Sunrise
Sat -- 06:44 AM PDT     3.26 feet High Tide
Sat -- 11:20 AM PDT     2.94 feet Low Tide
Sat -- 03:05 PM PDT     Moonset
Sat -- 05:29 PM PDT     5.13 feet High Tide
Sat -- 07:47 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.31.62.12.633.23.33.23.132.933.33.74.34.85.15.14.7432.11.3

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Sat -- 12:32 AM PDT     Moonrise
Sat -- 02:05 AM PDT     0.00 knots Slack
Sat -- 04:54 AM PDT     0.42 knots Max Flood
Sat -- 06:32 AM PDT     Sunrise
Sat -- 08:21 AM PDT     -0.00 knots Slack
Sat -- 10:27 AM PDT     -0.32 knots Max Ebb
Sat -- 01:29 PM PDT     0.00 knots Slack
Sat -- 03:04 PM PDT     Moonset
Sat -- 04:40 PM PDT     0.36 knots Max Flood
Sat -- 07:30 PM PDT     -0.00 knots Slack
Sat -- 07:46 PM PDT     Sunset
Sat -- 10:56 PM PDT     -0.73 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.2-00.20.40.40.40.30.1-0.1-0.3-0.3-0.2-0.10.10.20.30.40.30.1-0.1-0.4-0.6-0.7

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 San Francisco/Monterey Bay Area, CA (0,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, 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.