Saturday, May30, 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 5:48AMSunset 8:22PM Saturday May 30, 2020 11:59 AM PDT (18:59 UTC) Moonrise 12:35PMMoonset 1:13AM Illumination 62% Phase: Waxing Gibbous; Moon at 9 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- 819 Am Pdt Sat May 30 2020
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..E winds up to 10 kt, becoming sw 15 to 25 kt with gusts up to 30 kt this afternoon. Wind waves 1 ft, increasing to 2 to 3 ft this afternoon. W swell 3 to 5 ft at 12 seconds and sw 2 to 3 ft at 16 seconds. A chance of Thunderstorms and a slight chance of rain this morning, then a slight chance of showers and Thunderstorms this afternoon.
Tonight..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 ft. W swell 3 to 4 ft at 12 seconds and sw 2 to 3 ft at 15 seconds.
Sun..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 3 to 4 ft at 11 seconds and sw 2 to 3 ft at 15 seconds.
Sun night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell around 3 ft at 10 seconds and S around 2 ft at 14 seconds.
Mon..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 4 ft at 10 seconds and sw around 2 ft at 15 seconds.
Mon night..SW winds around 5 kt. Wind waves 1 ft. W swell 3 to 4 ft at 9 seconds and S around 2 ft at 13 seconds.
Tue..NW winds up to 10 kt. Wind waves 1 ft. W swell 3 to 4 ft and S around 2 ft.
Wed..NW winds up to 10 kt. Wind waves 1 ft. W swell 3 to 4 ft. Winds and wind waves higher in and near Thunderstorms. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 819 Am Pdt Sat May 30 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure west of san francisco will bring scattered showers and possible Thunderstorms through the morning hours. Moderate southerly winds along the inner waters will turn southwest this afternoon and decrease tonight. Northwest winds will increase Sunday afternoon and night. A mixed northwest swell and a building southwest swell will impact the waters through the weekend.


7 Day Forecast for Marine Location Near Santa Cruz, 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 301758 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1058 AM PDT Sat May 30 2020

SYNOPSIS. Scattered showers and isolated thunderstorms will continue today as an area of low pressure passes across the Bay Area. Precipitation is expected to end by this evening as the low shifts north of the area. Seasonable to slightly below normal temperatures are forecast for Sunday into Monday, along with dry conditions. Midweek warming is then likely, especially inland.

DISCUSSION. As of 8:30 AM PDT Saturday . Scattered showers and thunderstorms occurred across the Bay Area from about San Francisco and Oakland northward earlier this morning, mainly between 2 and 5 AM. Most of the convective precipitation has since lifted well north of our area and current radar shows only widely scattered light showers. The upper low responsible for this active weather is currently centered just west of San Mateo County and is tracking to the northeast. Short-term model data suggests an uptick in shower activity by late morning, continuing through mid afternoon. The 12Z NAM and latest HRRR both suggest that showers today will be most numerous from around Monterey Bay east into northern San Benito County and northward across Santa Clara County and into portions of the East Bay. Thunderstorms are also possible today as lapse rates steepen further due to both cold air aloft near the upper low center and surface heating. Temperatures today are expected to be near seasonal averages in coastal areas, but cooler than average inland.

From Previous Discussion . Given the rapid movement of the upper low precip chances will rapidly end from south to north around 00z as dry and stable air spreads over the region. However the next 12 hours or so will be quite interesting by Bay Area standards with lots of t-storm activity in the area or just offshore.

The low will be well inland by Sunday with a return to quiet and tranquil weather. The large scale flow remains cyclonic with a trough along the West Coast. Look for dry weather with seasonable temperatures Sunday into Monday.

A warming trend develops by midweek, though there remains some stunning differences in the MOS output for inland areas. On Weds the gfs mos has 81 for Livermore while the Euro has 102. The NBM has 87 as a compromise. Forecast will show midweek warming with a pattern similar to last week where a cut-off low stayed well to our southwest and allowed some warm air at mid levels to nose over CA. By the weekend of June 6-7th the models bring a late season cold front with a possible chance of North Bay rain showers and cool temps associated with a legitimate cold front. Precip chances are supported by the NBM, operational models and teleconnections. The current precip associated with the upper low over the region was portended accurately one week out by the models.

AVIATION. as of 10:55 AM PDT Saturday . Radar shows scattered showers moving through the MRY and SFO Bay Area from the south. No lightning detected since early this morning but there remains a possibility of thunderstorms through early afternoon. Showers will taper off later this afternoon as the upper low moves into the Sacramento Valley. Winds will switch to southwest this afternoon and to the northwest this evening. Moist northwest flow will allow stratus to return and spread well inland tonight.

Vicinity of KSFO . VFR with cigs remaining in the 4000-5000 ft range. Isolated showers through 21Z with the possibility of a thunderstorm. Winds light north to northeast becoming southwest 10-15 kt after 21Z. Winds becoming westerly after 05Z allowing lower MVFR cigs to come in.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR with cigs remaining above 3000 ft. Scattered showers through 21-22Z. Southerly winds at SNS 15-20 kt becoming west to northwest after 22Z. Lighter winds at MRY.

MARINE. as of 10:49 AM PDT Saturday . Low pressure west of San Francisco will bring scattered showers and possible thunderstorms through the morning hours. Moderate southerly winds along the inner waters will turn southwest this afternoon and decrease tonight. Northwest winds will increase Sunday afternoon and night. A mixed northwest swell and a building southwest swell will impact the waters through the weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pigeon Pt to Pt Pinos 0-10 nm from 11 AM SCA . SF Bay from 1 PM SCA . Mry Bay from 1 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm until 3 PM



PUBLIC FORECAST: Dykema/RWW AVIATION: W Pi MARINE: W Pi

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46092 - MBM1 15 mi151 min WSW 3.9 59°F 56°F1013.2 hPa (+0.7)
MLSC1 - Moss Landing, South Harbor, CA 17 mi52 min W 8 G 26 60°F 1013.8 hPa56°F
ELXC1 - Elkhorn Slough Reserve, CA 18 mi74 min S 8 66°F 58°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 24 mi39 min SE 14 G 18 58°F 56°F1013.9 hPa57°F
46114 - West Monterey Bay, CA 25 mi59 min 58°F8 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 25 mi89 min 57°F4 ft
MEYC1 26 mi83 min SW 7 G 9.9 61°F 62°F1013.5 hPa
RTYC1 - 9414523 - Redwood City, CA 38 mi65 min SE 4.1 G 5.1 68°F 73°F1013.5 hPa
46239 - Point Sur, CA (157) 44 mi59 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, CA12 mi66 minSW 11 G 143.00 miRain63°F57°F84%1013.7 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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W7NW3CalmN3CalmCalmNE3CalmE5N3SE9SW11
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1 day agoS6SW7S6SW6W8SW7SW5W3CalmW6W4CalmCalmCalmNW4CalmCalmSW4CalmSW3W3W4W65
2 days agoSW6SW6W7SW8SW8S9S7S8S6S6SE4SE5E43SE6E3NE4NE4CalmE3CalmW333

Tide / Current Tables for Santa Cruz, California
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Santa Cruz
Click for Map
Sat -- 02:12 AM PDT     Moonset
Sat -- 04:27 AM PDT     4.01 feet High Tide
Sat -- 05:50 AM PDT     Sunrise
Sat -- 11:14 AM PDT     -0.03 feet Low Tide
Sat -- 01:34 PM PDT     Moonrise
Sat -- 06:40 PM PDT     4.62 feet High Tide
Sat -- 08:21 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.93.33.7443.62.81.910.3-00.10.61.42.33.34.14.54.64.33.72.92.3

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Sat -- 01:43 AM PDT     0.00 knots Slack
Sat -- 02:11 AM PDT     Moonset
Sat -- 04:12 AM PDT     0.35 knots Max Flood
Sat -- 05:51 AM PDT     Sunrise
Sat -- 06:52 AM PDT     -0.00 knots Slack
Sat -- 10:06 AM PDT     -0.71 knots Max Ebb
Sat -- 01:34 PM PDT     Moonrise
Sat -- 01:52 PM PDT     0.00 knots Slack
Sat -- 05:03 PM PDT     0.65 knots Max Flood
Sat -- 08:20 PM PDT     Sunset
Sat -- 08:25 PM PDT     -0.00 knots Slack
Sat -- 11:00 PM PDT     -0.57 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.10.10.20.30.30.2-0-0.3-0.6-0.7-0.6-0.5-0.200.30.60.60.60.40.1-0.2-0.5-0.6

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 (14,3,4,5)
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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.