Saturday, December14, 2019
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Marine Weather and Tides
Capitola, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:11AMSunset 4:53PM Saturday December 14, 2019 6:23 PM PST (02:23 UTC) Moonrise 7:33PMMoonset 9:33AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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- 235 Pm Pst Sat Dec 14 2019
.small craft advisory in effect from 9 pm pst this evening through Sunday afternoon...
Tonight..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 16 seconds. A chance of rain this evening.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 5 to 7 ft at 15 seconds.
Sun night..NE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds.
Mon..NE winds 5 to 15 kt. Wind waves 1 ft. W swell 4 to 6 ft at 14 seconds.
Mon night..E winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 14 seconds.
Tue..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 5 ft at 15 seconds.
Tue night..SE winds 5 to 10 kt. Wind waves 1 ft. W swell 4 to 6 ft at 18 seconds. A chance of rain.
Wed..E winds up to 10 kt. Wind waves 1 ft. W swell 9 to 11 ft. A chance of rain.
Thu..SE winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 235 Pm Pst Sat Dec 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A few scattered showers will develop over the coastal waters this evening. Northwest winds will increase tonight into Sunday as a coastal trough develops over southern california while high pressure builds offshore. A large northwest swell will gradually decrease over the weekend. Gusty winds and large combined seas will create hazardous conditions for small crafts through Sunday evening. Winds will switch back to the southeast Monday as the next weather system approaches.


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 142330 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 330 PM PST Sat Dec 14 2019

SYNOPSIS. Another frontal system will drop southward over the region late this afternoon bringing a renewed chance for light precipitation. Cooler and drier conditions are then forecast from Sunday into early next week. Unsettled weather conditions are expected to return for the latter half of next week and will potentially continue into next weekend.

DISCUSSION. as of 1:46 PM PST Saturday . Mid and high clouds are starting to spread into Sonoma county from the north as the next system approaches the district. Otherwise, skies are partly cloudy across the area with cumulus clouds building mainly over the higher terrain. Early afternoon temperature readings are in the mid 50s to lower 60s, with gusty winds out of the northwest.

Meanwhile, the cold front continue to approach the coast and will move onshore along the Oregon and northern California coasts this afternoon. This front will bring precip chances into the North Bay by this evening, petering out as it moves inland. Rain chances will extend down the coast to Big Sur, with meager QPF amounts of a quarter of an inch or less expected. Showers to end by Sunday morning with high pressure building over the state over the next several days. This will bring cooler nights to the area through Tuesday. Widespread 30s are likely across the interior valleys Sunday morning and even more by Monday morning when lower 40s to even upper 30s will be possible near the coast. Daytime highs are expected to be generally in the 50s.

The forecast models continue to indicate a shift towards a more unsettled weather pattern by the middle of next week as a upper level trough and a cut-off low approach from the west. The first system forecast to hit the coast on Wednesday has more uncertainty surrounding it with ensemble members of both the GFS and ECMWF indicating a lot of variability in QPF. The second system, slated for next weekend, seems a little more certain timing-wise, but again, there is a wide variability in QPF amounts across the ensemble forecast members. The upshot is there will be a decent potential for periods of rain late in the week and into next weekend.

AVIATION. as of 03:30 PM PST Saturday . For 00z TAFs. A weak frontal system is approaching bringing another round of light showers to the region this evening. Still expecting cigs to generally remain above 2500 ft AGL with VFR vis. Showers are expected to be brief and to taper off from north to south tonight. VFR conditions then expected to prevail through the period aside from patchy low clouds through the early morning. Breezy W to NW winds this afternoon and this evening with sustained winds 10-15 kt and gusts 20-25 kt, mainly around the Bay Area. Winds will diminish overnight.

Vicinity of KSFO . VFR through the period with SCT cumulus around 2500 to 4000 ft AGL. Cigs may become broken (3500-5000 ft) when the front moves through and during any showers this evening. Cigs are expected to lift overnight once the system has passed. Breezy W to NW winds through the evening with gusts 20-25 kt before easing overnight.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mainly VFR conditions with borderline MVFR/VFR conditions expected at KMRY as showers arrive later this evening. Cigs expected to lift mid to late Sunday morning. Breezy NW winds this afternoon 10-15 kt with occasional gusts to around 20 kt through the early evening. Winds will diminish overnight.

MARINE. as of 02:35 PM PST Saturday . A few scattered showers will develop over the coastal waters this evening. Northwest winds will increase tonight into Sunday as a coastal trough develops over southern California while high pressure builds offshore. A large northwest swell will gradually decrease over the weekend. Gusty winds and large combined seas will create hazardous conditions for small crafts through Sunday evening. Winds will switch back to the southeast Monday as the next weather system approaches.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Mry Bay from 9 PM SCA . SF Bay from 9 PM



PUBLIC FORECAST: Sims AVIATION: AS MARINE: ST

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ELXC1 - Elkhorn Slough Reserve, CA 15 mi98 min NNE 9.9 54°F 1018 hPa47°F
46092 - MBM1 16 mi66 min NW 12 55°F 57°F1017.4 hPa (-0.6)
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi53 min 57°F5 ft
MEYC1 25 mi53 min 58°F1018.1 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 27 mi43 min WNW 14 G 18 55°F 57°F1018.1 hPa47°F
46114 - West Monterey Bay, CA 28 mi53 min 57°F13 ft
RTYC1 - 9414523 - Redwood City, CA 40 mi53 min WSW 7 G 8.9 54°F 58°F1017.4 hPa
46239 - Point Sur, CA (157) 44 mi53 min 57°F14 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA8 mi30 minW 310.00 miPartly Cloudy51°F41°F69%1017.5 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrNW3CalmW5SW4CalmCalmCalmCalmCalmCalmCalmNW4N3NW3NE33NW9W10
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1 day agoS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmCalmW6NE3SW6W4S3CalmCalm
2 days agoNW3N3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmCalmCalmCalmW3SW3CalmW5W5W5Calm

Tide / Current Tables for Santa Cruz, California
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Santa Cruz
Click for Map
Sat -- 12:43 AM PST     4.30 feet High Tide
Sat -- 04:38 AM PST     3.29 feet Low Tide
Sat -- 07:13 AM PST     Sunrise
Sat -- 09:32 AM PST     Moonset
Sat -- 10:48 AM PST     5.93 feet High Tide
Sat -- 04:52 PM PST     Sunset
Sat -- 05:48 PM PST     -0.93 feet Low Tide
Sat -- 07:33 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.24.343.63.33.33.64.14.75.35.85.95.54.63.11.50.1-0.7-0.9-0.60.21.22.23.2

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Sat -- 02:22 AM PST     -0.00 knots Slack
Sat -- 04:28 AM PST     -0.44 knots Max Ebb
Sat -- 07:12 AM PST     Sunrise
Sat -- 07:25 AM PST     0.00 knots Slack
Sat -- 09:31 AM PST     Moonset
Sat -- 10:22 AM PST     0.48 knots Max Flood
Sat -- 12:58 PM PST     -0.00 knots Slack
Sat -- 04:36 PM PST     -1.01 knots Max Ebb
Sat -- 04:52 PM PST     Sunset
Sat -- 07:33 PM PST     Moonrise
Sat -- 08:28 PM PST     0.00 knots Slack
Sat -- 11:34 PM PST     0.76 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.40.1-0.2-0.4-0.4-0.3-0.10.10.30.50.40.3-0-0.3-0.7-1-1-0.8-0.5-0.20.20.50.7

Weather Map
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wmap_P
GEOS 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 (21,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.