Saturday, December14, 2019
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Marine Weather and Tides
Seacliff, 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 7:11AMSunset 4:53PM Saturday December 14, 2019 10:51 AM PST (18:51 UTC) Moonrise 7:33PMMoonset 9:33AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 849 Am Pst Sat Dec 14 2019
Today..NW winds 10 to 20 kt. Wind waves 1 to 2 ft, increasing to 3 to 4 ft this afternoon. W swell 7 to 9 ft at 16 seconds.
Tonight..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 16 seconds. A chance of rain.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 5 to 7 ft at 15 seconds.
Sun night..NE winds 5 to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft at 15 seconds.
Mon..E winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 14 seconds.
Mon night..E winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 4 to 6 ft at 14 seconds.
Tue..SE winds 5 to 10 kt. Wind waves 1 ft. W swell 4 to 6 ft. A chance of rain.
Wed..NE winds up to 10 kt. Wind waves 1 ft. W swell 9 to 11 ft. A chance of rain. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 849 Am Pst Sat Dec 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will increase today and become breezy through Sunday as an upper level trough moves into northern california. Winds will switch back to the southeast Monday as the next weather system approaches. A few scattered showers will be possible over the coastal waters this evening. A long- period northwest swell will gradually decrease over the weekend.


7 Day Forecast for Marine Location Near Seacliff, CA
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location: 36.97, -121.91     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 141803 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1003 AM PST Sat Dec 14 2019

SYNOPSIS. Another frontal system will drop southward over the region late in the day bringing a renewed chance for light precipitation. Cooler and drier conditions are then forecast from Sunday into early next week. Unsettled weather conditions are expected to return for the latter half of next week and will potentially continue into next weekend.

DISCUSSION. as of 9:20 AM PST Saturday . A band of high clouds is currently moving across the central part of the state, otherwise, look for mostly sunny skies today most areas. Current temperatures are running cooler than yesterday at this time, mainly across the North and East Bay areas where there was less cloudiness overnight. Current readings are in the upper 40s to mid 50s. A front will move onshore along the Oregon and northern California coasts by this afternoon. This will spread precip chances into the North Bay by this evening, petering out as it moves inland. Rain chances will extend down the coast to Point Sur, with QPF numbers on the low side with a quarter of an inch or less expected. Showers to end by Sunday morning with high pressure building over the state over the next several days. This will bring cooler nights and seasonably mild days through Tuesday. Much cooler overnight conditions are expected with widespread 30s likely across the interior valleys Sunday morning and more so by Monday morning when lower 40s to even upper 30s will be possible near the coast. Daytime highs are expected to be generally in the 50s.

The forecast models continue to indicate a shift towards an unsettled weather pattern by the middle of next week as a upper level trough and a cut-off low approach from the west. Meanwhile, a much deeper plume of moisture will advect inland over Oregon and far northern California by the latter half of next week. Thus, while details remain limited at this time, there will be the potential for periods of rain late in the week and into next weekend.

AVIATION. as of 10:03 AM PST Saturday . For 18z TAFs. Drier air at the surface has arrived with cigs rising. Skies are also clearing in the drier air with cumulus buildup over terrain, mainly south of the Golden Gate. Overall, cloud cover should continue to decrease through early this afternoon before clouds increase again late this afternoon and evening. A trough and weak front will pass through this evening with a few scattered showers developing. Any rain will be light and lift from the trough should keep cigs mainly VFR, but brief periods of MVFR are possible with showers. Winds today will become breezy in favored locations near the coast and bay shorelines, with winds 10-15 kt and gusts 20-25 kt at KSFO and KOAK.

Vicinity of KSFO . VFR conditions through the period. SCT cumulus may develop near the terminal, mainly to the south and west of the approach. Isolated showers will develop between 00z and 06z this evening with a BKN layer at 4000-5000 ft as the front moves through. Breezy northwest winds with gusts 20-25 kt through the evening.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mainly VFR conditions today with SCT to BKN cumulus clouds 2500-4000 ft. Scattered along a front will arrive around 03z and end overnight. Borderline MVFR/VFR conditions developing at KMRY as the showers arrive. Winds will be breezy from the northwest today 10-15 kt with occasional gusts up to 20 kt.

MARINE. as of 8:49 AM PST Saturday . Northwest winds will increase today and become breezy through Sunday as an upper level trough moves into northern California. Winds will switch back to the southeast Monday as the next weather system approaches. A few scattered showers will be possible over the coastal waters this evening. A long- period northwest swell will gradually decrease over the weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm 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 SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm



PUBLIC FORECAST: Sims AVIATION: ST MARINE: ST

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ELXC1 - Elkhorn Slough Reserve, CA 14 mi67 min NNE 7 55°F 1021 hPa49°F
46092 - MBM1 16 mi35 min NNW 12 55°F 57°F1019.5 hPa (+0.8)
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi22 min 57°F4 ft
MEYC1 25 mi76 min 58°F1020.5 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 29 mi32 min NW 16 G 19 55°F 57°F1020.6 hPa48°F
46114 - West Monterey Bay, CA 29 mi22 min 57°F12 ft
RTYC1 - 9414523 - Redwood City, CA 40 mi52 min W 16 G 20 55°F 57°F1020.2 hPa (+1.0)
46239 - Point Sur, CA (157) 44 mi22 min 57°F13 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA7 mi59 minVar 310.00 miFair56°F46°F72%1019.9 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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Last 24hrCalmW6NE3SW6W4S3CalmCalmNW3CalmW5SW4CalmCalmCalmCalmCalmCalmCalmNW4N3NW3NE33
1 day agoCalmW3SW3CalmW5W5W5CalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3Calm
2 days agoW3W3SW3CalmCalmNW3N4CalmNW3N3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Santa Cruz, Monterey Bay, California
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Santa Cruz
Click for Map
Sat -- 12:32 AM PST     4.22 feet High Tide
Sat -- 05:08 AM PST     3.06 feet Low Tide
Sat -- 07:13 AM PST     Sunrise
Sat -- 09:32 AM PST     Moonset
Sat -- 10:54 AM PST     5.71 feet High Tide
Sat -- 04:52 PM PST     Sunset
Sat -- 06:04 PM PST     -1.06 feet Low Tide
Sat -- 07:33 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.23.93.63.23.13.23.74.355.55.75.44.53.21.60.2-0.7-1.1-0.8-0.10.923

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Sat -- 02:22 AM PST     -0.00 knots Slack
Sat -- 04:28 AM PST     -0.44 knots Max Ebb
Sat -- 07:12 AM PST     Sunrise
Sat -- 07:25 AM PST     0.00 knots Slack
Sat -- 09:31 AM PST     Moonset
Sat -- 10:22 AM PST     0.48 knots Max Flood
Sat -- 12:58 PM PST     -0.00 knots Slack
Sat -- 04:36 PM PST     -1.01 knots Max Ebb
Sat -- 04:52 PM PST     Sunset
Sat -- 07:33 PM PST     Moonrise
Sat -- 08:28 PM PST     0.00 knots Slack
Sat -- 11:34 PM PST     0.76 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.40.1-0.2-0.4-0.4-0.3-0.10.10.30.50.40.3-0-0.3-0.7-1-1-0.8-0.5-0.20.20.50.7

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 (13,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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