Wednesday, December11, 2019
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Marine Weather and Tides
Saratoga, 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 7:10AMSunset 4:52PM Wednesday December 11, 2019 7:10 PM PST (03:10 UTC) Moonrise 4:45PMMoonset 6:33AM Illumination 100% Phase: Full Moon; Moon at 15 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- 205 Pm Pst Wed Dec 11 2019
Tonight..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 7 ft at 17 seconds. A chance of rain after midnight.
Thu..S winds up to 10 kt. Wind waves 1 ft. W swell 7 to 9 ft at 18 seconds. A slight chance of rain.
Thu night..W winds up to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft at 17 seconds.
Fri..W winds 5 to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft at 18 seconds. A slight chance of rain.
Fri night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 11 to 13 ft at 17 seconds. A slight chance of rain.
Sat..NW winds 20 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 10 to 12 ft at 16 seconds.
Sat night..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 10 ft at 15 seconds.
Sun..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. NW swell 7 to 9 ft.
Mon..E winds 5 to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft. A chance of rain.
PZZ500 205 Pm Pst Wed Dec 11 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will prevail tonight into Thursday then switch around to the northwest with the arrival of the next weather system. This next system will also bring with it a large long period northwest swells. This swell will build on Thursday, peak on Friday and continue through Saturday.


7 Day Forecast for Marine Location Near Saratoga, CA
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location: 37.29, -122.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 120009 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 409 PM PST Wed Dec 11 2019

SYNOPSIS. Periods of light rain will be possible over mainly the northern portion of the forecast area through Saturday with mild temperatures region-wide. Conditions will dry out and turn cooler Sunday into Monday. Unsettled conditions will potentially return by mid/late next week.

DISCUSSION. as of 02:04 PM PST Wednesday . KMUX radar continues to indicate scattered showers mainly across the North Bay with isolated showers around San Mateo and Santa Cruz Counties. Additional showers have formed off the coast and will drift inland this afternoon. Moist zonal flow has developed and will remain in place through Friday with subtropical moisture offshore. A weak disturbance moving through the flow will interact with the abundant moisture to enhance rainfall this evening and overnight, mainly across the northern half of the forecast area. Scattered showers will continue on Thursday, with another disturbance on Friday bringing another round of light rain, once again focused on our northern areas. The moist onshore flow will finally be pushed south on Saturday as a trough approaches from the northwest. Precipitation from the trough looks to be very light and mostly brush by to our north. The trough will usher in a colder and drier airmass with Sunday and Monday cool and dry.

Precipitation amounts tonight through Thursday will range from a quarter to a half inch across the North Bay, 0.1 to 0.2 inches in the Bay Area, and less than a tenth of an inch near Monterey Bay. The higher terrain of the North Bay could pick up slightly higher amounts with totals up to an inch. Additional rainfall on Friday will range from a few hundredths to a quarter of an inch, with locally up to a half inch in the North Bay Mountains. Rainfall rates and totals are not expected to create significant impacts, with wet and slick roadways the main concern during brief periods of moderate rain.

Skies will remain cloudy through the week as moisture continues to stream inland. Temperatures will warm several degrees across southern areas on Thursday and Friday under a slightly warmer airmass. Highs both days will mainly be in the 60s, coolest across the North Bay where showers will be the most persistent and warmest in the lower elevations of Monterey and San Benito Counties. Temperatures will cool significantly on Saturday behind a cold front with highs in the mid to upper 50s. Cool temperatures will continue on Sunday and Monday as northwesterly flow aloft sets up. Overnight lows will also drop considerably with 30s possible in many valley locations.

A ridge will build over the eastern Pacific on Sunday and move overhead on Monday. The ridge looks to be short-lived as another trough is projected to approach California on Tuesday or Wednesday. Models have generally come into better agreement about this feature with the latest model cycle. Looking into the long term, the pattern looks to remain progressive into the middle of December with the potential for more significant storm systems 8-14 days into the future.

AVIATION. as of 4:10 PM PST Wednesday . A series of shortwave disturbances will keep abundant low level moisture over the area through Thursday. MVFR cigs will persist with occasional IFR cigs in the valleys and the MRY Bay Area. Some light rain is occurring mainly in the North Bay this afternoon but this will spread over the SFO Bay Area and possibly further south tonight after midnight as the next disturbance approaches. Winds will be light and generally out of the east or southeast.

Vicinity of KSFO . MVFR cigs with bases around 1500-2000 ft. Light southeast winds under 10 kt. Occasional light rain after 09-10Z.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Areas of MVFR cigs around the area becoming more widespread after 03Z. Cigs lowering into IFR category after 06-08Z. Light east to southeasterly winds under 10 kt.

MARINE. as of 04:00 PM PST Wednesday . Light southerly winds will prevail tonight into Thursday then switch around to the northwest with the arrival of the next weather system. This next system will also bring with it a large long period northwest swells. This swell will build on Thursday, peak on Friday and continue through Saturday.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. NONE.



PUBLIC FORECAST: ST AVIATION: W Pi MARINE: CW

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 17 mi53 min SE 2.9 G 7 61°F 57°F1022.2 hPa
AAMC1 - 9414750 - Alameda, CA 36 mi53 min WSW 2.9 G 4.1 56°F 55°F1021.7 hPa
MLSC1 - Moss Landing, South Harbor, CA 36 mi122 min WNW 6 G 15 58°F 1023.3 hPa55°F
46092 - MBM1 37 mi64 min E 3.9 56°F 56°F1022.4 hPa (+0.0)
ELXC1 - Elkhorn Slough Reserve, CA 37 mi86 min NNE 1 58°F 1024 hPa56°F
LNDC1 37 mi53 min WSW 2.9 G 4.1 57°F 1021.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi53 min SW 1 G 1.9
OBXC1 39 mi53 min 55°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi53 min WSW 1 G 1.9 55°F 1021.7 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 39 mi31 min SSE 12 G 16 58°F 57°F1023 hPa57°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 40 mi53 min Calm G 1.9 55°F 1020.6 hPa
PXSC1 40 mi53 min 58°F 58°F
FTPC1 - 9414290 - San Francisco, CA 42 mi53 min Calm G 0 54°F 55°F1021.8 hPa
46114 - West Monterey Bay, CA 42 mi41 min 57°F8 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi31 min SSE 16 G 19 58°F 57°F1021.9 hPa57°F
46237 - San Francisco Bar, CA (142) 46 mi41 min 55°F8 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 46 mi53 min SW 1.9 G 2.9 56°F 1022 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 47 mi42 min Calm 55°F 1022 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 47 mi41 min 57°F4 ft
RCMC1 - 9414863 - Richmond, CA 48 mi53 min WNW 1.9 G 2.9 54°F 55°F1021.2 hPa
MEYC1 48 mi95 min 58°F1023.2 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA8 mi18 minSSE 1110.00 miMostly Cloudy61°F53°F75%1022 hPa
San Jose / Reid / Hillv, CA13 mi16 minSE 810.00 miMostly Cloudy61°F53°F77%1022.3 hPa
Palo Alto Airport, CA14 mi24 minSE 610.00 miMostly Cloudy61°F53°F77%1022 hPa
San Carlos Airport, CA20 mi24 minSE 1010.00 miMostly Cloudy59°F55°F88%1022 hPa

Link to 5 minute data for KSJC

Wind History from SJC (wind in knots)
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Last 24hrN93SE6SW4SE8SE7S7SE7S6S9S8S6S4S8S8S9S8S8SE10SE9SE12S8SE9SE11
1 day agoNW6NW6N3NW4CalmSE3CalmCalmCalmSW3CalmS3NW3E3S5SE3NW3NW6W3NW3N6N3W5N9
2 days agoNW10N5NW8NW6CalmCalmCalmSW4SW4CalmW4SW4SW4CalmN3N4NW6N4NW6N7N6NW7NW5NW5

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
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Gold Street Bridge
Click for Map
Wed -- 12:37 AM PST     7.57 feet High Tide
Wed -- 06:26 AM PST     2.78 feet Low Tide
Wed -- 06:34 AM PST     Moonset
Wed -- 07:12 AM PST     Sunrise
Wed -- 11:18 AM PST     10.49 feet High Tide
Wed -- 04:44 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 07:26 PM PST     -0.76 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.37.56.95.84.53.52.834.56.89.110.410.39.47.95.83.51.50-0.7-0.50.72.74.8

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Wed -- 12:39 AM PST     -0.01 knots Slack
Wed -- 04:16 AM PST     -0.68 knots Max Ebb
Wed -- 06:13 AM PST     0.00 knots Slack
Wed -- 06:34 AM PST     Moonset
Wed -- 07:12 AM PST     Sunrise
Wed -- 08:50 AM PST     1.05 knots Max Flood
Wed -- 11:39 AM PST     -0.00 knots Slack
Wed -- 04:28 PM PST     -1.46 knots Max Ebb
Wed -- 04:44 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 07:13 PM PST     0.00 knots Slack
Wed -- 09:14 PM PST     Full Moon
Wed -- 09:57 PM PST     1.45 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.4-0.1-0.4-0.6-0.7-0.5-0.10.40.910.80.4-0.1-0.5-0.9-1.3-1.4-1.4-0.9-0.20.61.31.51.3

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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (22,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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