Friday, January24, 2020
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Marine Weather and Tides
Pasatiempo, 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 7:14AMSunset 5:25PM Friday January 24, 2020 8:22 AM PST (16:22 UTC) Moonrise 7:21AMMoonset 5:22PM Illumination 0% Phase: New Moon; Moon at 29 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- 641 Am Pst Fri Jan 24 2020
.small craft advisory in effect from this evening through Saturday afternoon...
Today..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 21 seconds, increasing to 6 to 8 ft at 20 seconds this afternoon. SWell W 6 to 8 ft.
Tonight..NW winds 5 to 10 kt. Wind waves 1 ft. W swell 9 to 11 ft at 18 seconds and W 2 to 3 ft at 13 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 10 to 12 ft at 16 seconds.
Sat night..SW winds up to 10 kt. Wind waves 1 ft. W swell 7 to 9 ft at 15 seconds. A chance of rain.
Sun..S winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 5 ft at 19 seconds and W 3 to 5 ft at 19 seconds. A chance of rain.
Sun night..N winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft at 20 seconds and W 6 to 8 ft at 16 seconds.
Mon..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 11 to 13 ft.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 8 to 10 ft.
PZZ500 641 Am Pst Fri Jan 24 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Locally breezy northerly winds along the big sur coast today, otherwise predominately light winds across the waters today. A long period west to northwest swell will move through the waters, peaking on Friday and Saturday. This will create conditions hazardous to small crafts. Winds will become southwest to west late Saturday and into Sunday as the next system approaches.


7 Day Forecast for Marine Location Near Pasatiempo, CA
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location: 37, -122.03     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 241107 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 307 AM PST Fri Jan 24 2020

SYNOPSIS. A weak front will pass over the region tonight with some sprinkles possible for the North Bay but mainly dry overall. A warm front will bring some light rain chances to the North Bay late Saturday but mainly focused Saturday night into early Sunday for the rest of the Bay Area. Rain amounts light overall with a drying trend Sunday afternoon through early next week as temperatures trend to above normal.

DISCUSSION. as of 3:05 AM PST Friday . The ridge of high pressure that brought mild temperatures to the Bay Area yesterday has shifted eastward. In its wake another upper level trough and associated surface frontal boundary is moving through NorCal. The weak surface front brought light rain to the North Coast near Eureka. There have also been a few bucket tips as far south of Ukiah. Therefore, a few sprinkles and a passing shower are possible early this morning across the northern areas of the North Bay. Outside of light rain chances this morning, patchy fog will likely be the bigger impact during the morning commute. Dew point values are up slightly this morning with automated sensors around the region reporting reduced visibilities. Satellite fog product also shows fog developing across the interior valleys and along the coast. Temperatures today will be pleasant and mainly in the 60s for most locations. A passing warm front may bring some light rain again to the North Bay Friday night, but amounts will be light.

Rinse and repeat over the weekend. High pressure will briefly rebuild allowing for another round of night/morning fog followed by mild afternoon temperatures. Highs on Saturday will stay in the 60s, which is still a few degrees above normal. The ridge will weaken and slide eastward later in the day as another weak front approaches. Light rain chances return to the North Bay late in the day Saturday. Rain chances increase and eventually spread southward Saturday night through Sunday. Rainfall amounts over the weekend will generally be a few hundredths to a tenth or two. Highest rainfall amounts will be over the North Bay and up to nearly three quarters of an inch.

Another weak boundary will bring yet another chance for light rain across the North Bay late Monday/Tuesday. Dry weather is then expected for the rest of the week.

Despite all of the rain mentions over the next seven days no major storm is expected and when/if rain does occur amounts will be meager at best. If you're looking for rain in the extended it's not looking good. Trends as of late are shaping up to be dry to finish off January and even into early February.

AVIATION. as of 10:00 PM PST Thursday . For 06Z TAFs. Mid to high clouds are pushing through the area late this evening with clearing observed on satellite in its wake. Off the coast, behind the area of clearing, an area of low clouds along a boundary have been observed. Low clouds should begin to push onshore late tonight into early Friday morning. Patchy fog developing under mostly clear skies overnight, with some development already observed across the North Bay. However, not expecting widespread dense fog to develop at this time. MVFR cigs developing Friday morning as the weak boundary moves into the Bay Area. There could be areas of mist accompanying the low clouds around the Bay Area reducing visibility. Conditions are expected to improve Friday afternoon with SCT to BKN clouds with bases 3000-5000 ft AGL. Winds through the period will be light.

Vicinity of KSFO . VFR conditions will prevail into the early overnight hours. Low clouds will begin to increase early Friday morning as a weak boundary approaches the coast. Borderline MVFR/IFR cigs developing on Friday morning around 15z. Some reduced visibility and mist may be possible at times Friday morning but not expecting dense fog. Light winds through the period.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR conditions are forecast to prevail tonight. Isolated patches of fog or mist developing early Friday morning. Brief periods of MVFR cigs are possible Friday morning. Winds tonight will be light from the southeast, becoming light onshore Friday afternoon.

MARINE. as of 09:02 PM PST Thursday . Generally light winds are forecast to prevail over the coastal waters overnight. The exception to this will be along the Big Sur coast where a coastal jet with northerly winds is forecast to develop. A long period west to northwest swell will move through the waters, peaking on Friday and Saturday. This will create conditions hazardous to small crafts. Winds will become southwest to west late Saturday and into Sunday as the next system approaches.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 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 . Pt Reyes to Pigeon Pt 0-10 nm from 9 AM



PUBLIC FORECAST: MM AVIATION: ST MARINE: ST

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46092 - MBM1 17 mi66 min ENE 5.8 52°F 55°F1020.7 hPa (+0.5)
ELXC1 - Elkhorn Slough Reserve, CA 20 mi98 min ESE 1 47°F 1020 hPa47°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 25 mi33 min NW 12 G 14 55°F 55°F9 ft1022.1 hPa52°F
46114 - West Monterey Bay, CA 26 mi53 min 55°F7 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 27 mi53 min 55°F3 ft
MEYC1 28 mi47 min 56°F1021.6 hPa
RTYC1 - 9414523 - Redwood City, CA 36 mi53 min SSE 1 G 1.9 48°F 53°F1022.7 hPa
46239 - Point Sur, CA (157) 46 mi53 min 55°F8 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA13 mi30 minN 07.00 miFair46°F45°F96%1022 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrCalmCalmCalmSE5SW3CalmW5W3W4E3CalmNE3NW3CalmE4N3N4NW3NE3CalmN3CalmNW3Calm
1 day agoCalmCalmCalmCalmCalmE3S3W5W6NW3CalmCalmNW3NW3NW3CalmE4W4CalmNW4CalmNW4NW4Calm
2 days agoCalmCalmCalmSW5SW5SW5CalmSW3W5CalmCalmN3NE4CalmN3N3E3CalmN3CalmSE3CalmCalmCalm

Tide / Current Tables for Santa Cruz, California
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Santa Cruz
Click for Map
Fri -- 03:36 AM PST     2.94 feet Low Tide
Fri -- 07:16 AM PST     Sunrise
Fri -- 07:20 AM PST     Moonrise
Fri -- 09:25 AM PST     5.88 feet High Tide
Fri -- 01:44 PM PST     New Moon
Fri -- 04:27 PM PST     -0.76 feet Low Tide
Fri -- 05:21 PM PST     Moonset
Fri -- 05:24 PM PST     Sunset
Fri -- 11:54 PM PST     4.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.543.4333.33.94.75.45.85.85.142.41-0.1-0.7-0.7-0.20.61.72.73.74.3

Tide / Current Tables for Elkhorn Slough railroad bridge, California
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Elkhorn Slough railroad bridge
Click for Map
Fri -- 03:58 AM PST     2.76 feet Low Tide
Fri -- 07:15 AM PST     Sunrise
Fri -- 07:18 AM PST     Moonrise
Fri -- 10:02 AM PST     5.91 feet High Tide
Fri -- 01:44 PM PST     New Moon
Fri -- 04:48 PM PST     -0.72 feet Low Tide
Fri -- 05:21 PM PST     Moonset
Fri -- 05:23 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.64.13.532.833.54.355.65.95.64.73.21.60.3-0.5-0.7-0.40.41.42.53.54.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (11,2,3,4)
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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.