Wednesday, August5, 2020
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Marine Weather and Tides
Santa Cruz, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:16AMSunset 8:12PM Wednesday August 5, 2020 9:50 AM PDT (16:50 UTC) Moonrise 8:49PMMoonset 7:08AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 817 Am Pdt Wed Aug 5 2020
Today..W winds 10 to 20 kt. Wind waves 1 to 2 ft, increasing to 3 to 4 ft this afternoon. NW swell 5 to 7 ft at 8 seconds.
Tonight..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 5 ft at 8 seconds.
Thu..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 8 seconds.
Thu night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 9 seconds.
Fri..W winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 6 ft at 10 seconds.
Fri night..SW winds around 5 kt. Wind waves 1 ft. NW swell 5 to 6 ft at 10 seconds. Patchy fog.
Sat..S winds up to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft.
Sun..S winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft.
PZZ500 817 Am Pdt Wed Aug 5 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to breezy northwest winds will continue across the waters through late this week. Winds will begin to ease over the southern waters tomorrow with gusty conditions persisting for the northern waters through the end of the work week. Gusty winds are expected this afternoon and into the early evening over the san francisco bay around the golden gate gap and northward through the delta. These winds will generate steep fresh swells resulting in locally hazardous seas, especially for smaller vessels. A couple of light southerly swells will continue into the weekend.


7 Day Forecast for Marine Location Near Santa Cruz city, CA
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location: 36.97, -122.02     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 051552 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 852 AM PDT Wed Aug 5 2020

SYNOPSIS. Cooler conditions will continue across the region through Wednesday, as a trough moves into the region. Light rain and drizzle will be possible this morning, mainly near the coast and even up into the coastal hills. In addition, breezy conditions will prevail, with locally gusty west to northwest winds expected during the afternoon and evening hours. Modest warming is then forecast for late in the week and into the weekend, but temperatures will only bounce back to near seasonal averages.

DISCUSSION. as of 08:52 AM PDT Wednesday . Forecast remains on track this morning. The marine layer is reaching up to around 3000 feet with cloud bases in the 500 to 1500 foot range. Short of the long, expect clouds to linger at the coast all day with a slow burn off for the rest of the area. Temps will be cooler than climatology by 5 to 15 degrees today. Slight warm up for the weekend.

PREV DISCUSSION. As of 3:15 AM PDT Wednesday . Water vapor image shows a mid-level trough moving into northern California this evening. This has deepened the marine layer to around 2000 feet while a strong onshore gradient has produced robust winds over parts of the North and East Bay Hills and the San Bruno Gap where SFO Airport had a gust to 41 kts at 10:38 pm. There is a good inland push of stratus from the MRY Bay Area into the central Bay Area which includes the Santa Cruz Mountains and the East Bay Hills. Measurable drizzle or even light rain has already been reported at a few RAWS sites in these areas. Drizzle/light rain expected to continue through midmorning along the coast and in the coastal hills. Could see up to one-tenth of an inch in the hills.

Inland highs today will be about 5-10 degrees cooler and a few degrees below normal for this time of year. Highs will range from the 60s along the coast to the mid 80s in the warmest inland locations. Onshore winds gusting to 30-40 kt can be expected along the coast and in the hills especially near Altamont.

The trough moves inland tonight but on the heels is another upper level trough approaching the Pacific Northwest. This trough will impact areas further north so there will be a warming trend for the area for Thursday and Friday. By Friday highs should be back up to the low to mid 90s in the warmest inland valleys. After this trough moves inland a weak remnant trough will develop off the California coast for the weekend. This will keep temperatures from really warming up as highs will remain near to slightly above normal. No heatwaves in sight as the long-range shows another upper trough approaching the Pacific Northwest early next week.

AVIATION. As of 4:56 AM PDT Wednesday . for 12z TAFs. IFR to MVFR ceilings are along the coast and moving inland with the stratus machine fully operational thanks to NW winds, coastal upwelling and sufficient water vapor for stratus cloud development. An uptrend in sea surface temps in late July has returned to cooler sea surface temps ranging from 50 F to 55 F, similar to early July. Expect partial clearing to the coast, stratus then returning tonight and Thursday morning. Patchy drizzle ongoing for the coast and west facing slopes in line of stratus surge farther inland. Marine layer depth near 2000 feet.

Vicinity of KSFO . IFR ceiling until 17z then MVFR ceiling for the day. Strong wind late last evening has since subsided to about 15 knots. West wind resuming to gusty again later today then easing again tonight and Thursday morning.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . MVFR ceilings with patchy light drizzle in the morning. Mainly MVFR ceilings through today, tonight and Thursday morning. Afternoon west winds up to 15 to 20 knots.

MARINE. as of 4:37 AM PDT Wednesday . Gusty northwest winds will prevail through late week. Strongest winds can be expected along the inner coastal waters north of Point Reyes and south of Point Sur. Winds over the North SF Bay will be breezy with a few stronger gusts Wednesday afternoon and into the early evening. These winds will generate steep fresh swells resulting in locally hazardous seas, especially for smaller vessels.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm until 11 AM SCA . SF Bay from 11 AM



PUBLIC FORECAST: W Pi AVIATION: Canepa MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46092 - MBM1 15 mi41 min W 7.8 56°F 55°F1016.1 hPa (+0.8)
MLSC1 - Moss Landing, South Harbor, CA 17 mi49 min W 11 G 27 58°F 1016.4 hPa56°F
ELXC1 - Elkhorn Slough Reserve, CA 18 mi65 min W 5.1 60°F 59°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 24 mi30 min NW 7.8 G 12 58°F 55°F1016.8 hPa56°F
46114 - West Monterey Bay, CA 25 mi54 min 58°F5 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 25 mi54 min 58°F2 ft
MEYC1 26 mi74 min W 5.1 G 8 58°F 62°F1016.9 hPa
RTYC1 - 9414523 - Redwood City, CA 38 mi56 min WSW 9.9 G 15 59°F 73°F1016.2 hPa
46239 - Point Sur, CA (157) 44 mi54 min 57°F6 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA12 mi57 minN 010.00 miOvercast62°F55°F80%1015.9 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrS3SW5SW76SW7S9S6SE8E8E8E6E5E5CalmCalmCalmCalmCalmCalmCalmCalmNE3CalmCalm
1 day ago3S5S7S8S8S7S7S6S7S8SE6SE4SE5E6E5E5NE4CalmCalm3E3E3CalmCalm
2 days ago44S5SW8SW7S8S7S8S7S6S5S3CalmCalmCalmCalmN4N3CalmNW3CalmCalmCalmS3

Tide / Current Tables for Santa Cruz, Monterey Bay, California (sub)
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Wed -- 01:40 AM PDT     -0.00 knots Slack
Wed -- 04:51 AM PDT     -0.96 knots Max Ebb
Wed -- 06:17 AM PDT     Sunrise
Wed -- 08:08 AM PDT     Moonset
Wed -- 08:46 AM PDT     0.00 knots Slack
Wed -- 11:47 AM PDT     0.76 knots Max Flood
Wed -- 03:01 PM PDT     -0.00 knots Slack
Wed -- 05:23 PM PDT     -0.54 knots Max Ebb
Wed -- 08:09 PM PDT     Sunset
Wed -- 08:44 PM PDT     0.00 knots Slack
Wed -- 09:48 PM PDT     Moonrise
Wed -- 11:31 PM PDT     0.56 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.2-0.1-0.6-0.9-1-0.8-0.6-0.30.10.50.70.80.60.40-0.3-0.5-0.5-0.4-0.20.10.40.5

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 (12,3,4,5)
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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 numerous 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.