Tuesday, July7, 2020
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Marine Weather and Tides
Boulder Creek, 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 5:53AMSunset 8:32PM Tuesday July 7, 2020 5:27 PM PDT (00:27 UTC) Moonrise 9:49PMMoonset 7:19AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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- 224 Pm Pdt Tue Jul 7 2020
.small craft advisory in effect through late tonight...
Tonight..NW winds 20 to 30 kt with gusts up to 35 kt, diminishing to 15 to 20 kt with gusts up to 25 kt after midnight. Wind waves 7 to 8 ft, decreasing to 4 to 5 ft after midnight. NW swell 4 to 5 ft at 9 seconds and S around 2 ft at 14 seconds.
Wed..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 2 ft at 15 seconds.
Wed night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 2 ft at 14 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 2 ft at 14 seconds.
Thu night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. NW swell 4 to 5 ft at 9 seconds and S around 2 ft at 14 seconds.
Fri..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 2 ft at 13 seconds.
Fri night..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 3 to 5 ft at 8 seconds and S around 2 ft at 13 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 3 to 5 ft and S around 2 ft.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 5 ft.
PZZ500 224 Pm Pdt Tue Jul 7 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A 1033 mb high pressure centered over the eastern pacific and troughing over the west will continue to produce strong and gusty northwest winds through midweek. The strongest winds will occur off of the big sur coast where gale force gusts are likely through this evening. These strong winds will continue to generate steep fresh swell and hazardous seas conditions. Winds will begin to diminish late in the week.


7 Day Forecast for Marine Location Near Boulder Creek, CA
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location: 37.13, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 072344 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 444 PM PDT Tue Jul 7 2020

SYNOPSIS. Seasonably cool temperatures will continue today as an upper trough moves through the region. Temperatures are expected to be similar through midweek before warming late in the week and into next weekend as high pressure builds over the region.

DISCUSSION. as of 01:37 PM PDT Tuesday . Mostly clear skies remain over the region with some low clouds well offshore over the waters. Breezy onshore winds this afternoon along the coast and in the hills with observations showing gusts between 25 and 35 mph. Winds have eased compared to yesterday and this morning since the onshore SFO-SAC gradient has weakened. Winds will continue to diminish tonight as a passing upper level trough exits the region into tomorrow. Temperatures this afternoon are within a few degrees of yesterday with most coastal areas in the 60s to low 70s and 70s to low 80s across the interior. Seasonable afternoon highs still anticipated with 60s/70s along the coast and 80s/90s inland. Some uncertainty exists as to whether more extensive low clouds return to the coast tonight/tomorrow morning. The latest NAM model shows the SFO-ACV gradient remaining around 5-6 mb into tomorrow morning. This may once again limit the amount of stratus.

The upper level trough currently over California will continue to move eastward into tomorrow while zonal flow develops aloft. This will result in a slight increase in temperatures tomorrow, though conditions will remain fairly seasonable. More noticeable warming is expected late this week and into the weekend as high pressure continues to build over the Desert Southwest and expand into California. A wide spread of highs is forecast late this week and through the weekend where the coast will continue to see temperatures in the 60s and 70s while the far portions of the interior will reach the mid to upper 90s. Enough cooling is expected in the overnight hours to limit heat risk to low for most locations with only some patches of moderate heat risk far inland. Latest deterministic models show high pressure situated over the Desert Southwest through much of next week.

AVIATION. As of 4:42 PM PDT Tuesday . for 00Z TAFs. Clear skies over the regional terminals, while visible satellite shows stratus over the ocean making a southerly trend down the coastline. Winds are breezy and onshore, with a few stronger gusts at coastal terminals. Difficult forecast tonight dependent upon the movement of the stratus and the onshore inundation of moisture toward land that is locked in with dry air. Changes for low clouds for coastal terminals, but there is low confidence given the strength the dry air (lack of low clouds) last night/this past morning. Winds will scale back overnight before another afternoon breezy conditions.

Vicinity of KSFO . VFR. Winds are out of the west between 21-24 kt, gust up to 30 knots is still possible until approximately 4z. Winds will subside overnight potential for FEW/SCT low clouds to develop early Wednesday morning, low confidence in any fuller build up of clouds. VFR expected again on Wednesday afternoon with strong onshore winds.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Skies are clear with breezy onshore winds and occasional stronger gusts. As winds subside this evening, low clouds are forecast to develop with MVFR likely, and IFR conditions possible with the potential for lowering visibility as well. Clouds are expected to lift around 17z Wednesday as winds remain onshore and become breezy in the afternoon.

MARINE. as of 04:34 PM PDT Tuesday . A 1033 mb high pressure centered over the eastern Pacific and troughing over the West will continue to produce strong and gusty northwest winds through midweek. The strongest winds will occur off of the Big Sur coast where gale force gusts are likely through this evening. These strong winds will continue to generate steep fresh swell and hazardous seas conditions. Winds will begin to diminish late in the week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Reyes to Pigeon Pt 0-10 nm until 3 AM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 AM SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm GLW . Pt Pinos to Pt Piedras Blancas 0-10 nm until 9 PM SCA . Mry Bay until 9 PM



PUBLIC FORECAST: AS AVIATION: DK MARINE: RGass

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46042 - MONTEREY - 27NM West of Monterey Bay, CA 25 mi167 min NW 19 G 23 56°F 55°F53°F
RTYC1 - 9414523 - Redwood City, CA 26 mi57 min WNW 16 G 17 76°F 74°F1013.2 hPa
46092 - MBM1 30 mi118 min NW 16 56°F 55°F1014 hPa (-1.8)
46114 - West Monterey Bay, CA 30 mi31 min 54°F9 ft
MLSC1 - Moss Landing, South Harbor, CA 35 mi172 min W 8 G 22 60°F 1015.2 hPa53°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 35 mi167 min NW 16 G 19 56°F 53°F
ELXC1 - Elkhorn Slough Reserve, CA 36 mi102 min W 4.1 67°F 55°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 40 mi61 min 62°F3 ft
MEYC1 42 mi51 min WNW 8.9 G 14 59°F 64°F
AAMC1 - 9414750 - Alameda, CA 44 mi57 min W 8 G 11 66°F 71°F1013.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi57 min WSW 8.9 G 13
PXOC1 - 9414311 - San Francisco (Pier 1), CA 46 mi57 min WSW 12 G 16 65°F 1012.2 hPa
LNDC1 46 mi57 min W 8 G 12 67°F 1013.4 hPa
OBXC1 47 mi57 min 65°F 54°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi57 min W 7 G 8.9 65°F 1013.3 hPa
PXSC1 47 mi57 min 66°F 53°F
FTPC1 - 9414290 - San Francisco, CA 48 mi57 min WSW 18 G 25 59°F 64°F1013.6 hPa
46237 - San Francisco Bar, CA (142) 49 mi57 min 58°F5 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KNUQ

Wind History from NUQ (wind in knots)
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Last 24hr--------------------------------CalmCalmCalmCalmS3CalmCalmSE5
1 day ago--------------------------------NE7NE4NE4CalmCalmCalmCalmCalm
2 days ago--------------------------------N5CalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Tue -- 05:56 AM PDT     Sunrise
Tue -- 06:46 AM PDT     -1.10 feet Low Tide
Tue -- 08:19 AM PDT     Moonset
Tue -- 01:50 PM PDT     4.27 feet High Tide
Tue -- 06:48 PM PDT     2.82 feet Low Tide
Tue -- 08:32 PM PDT     Sunset
Tue -- 10:48 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.553.92.51-0.2-0.9-1.1-0.70.21.22.43.44.14.34.13.73.22.92.83.13.64.24.8

Tide / Current Tables for Santa Cruz, California
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Santa Cruz
Click for Map
Tue -- 05:55 AM PDT     Sunrise
Tue -- 06:46 AM PDT     -0.92 feet Low Tide
Tue -- 08:18 AM PDT     Moonset
Tue -- 02:23 PM PDT     4.41 feet High Tide
Tue -- 06:49 PM PDT     3.01 feet Low Tide
Tue -- 08:30 PM PDT     Sunset
Tue -- 10:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.65.24.22.71.2-0-0.7-0.9-0.50.21.22.23.244.44.343.53.133.23.74.34.9

Weather Map
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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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Wind Forecast for San Francisco/Monterey Bay Area, CA (20,4,5,8)
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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 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.