Tuesday, January28, 2020
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Marine Weather and Tides
Bodega Bay, 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 7:17AMSunset 5:29PM Tuesday January 28, 2020 12:51 PM PST (20:51 UTC) Moonrise 9:44AMMoonset 9:17PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 835 Am Pst Tue Jan 28 2020
.small craft advisory in effect through Wednesday evening...
Today..NW winds 5 to 15 kt. Wind waves 1 ft, increasing to 2 to 3 ft this afternoon. W swell 10 to 12 ft at 14 seconds. Rain likely this morning.
Tonight..NW winds 10 to 15 kt. Wind waves 2 to 3 ft. W swell 11 to 13 ft at 14 seconds.
Wed..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 10 to 12 ft at 14 seconds.
Wed night..NW winds 15 to 20 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell 7 to 9 ft at 13 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 9 to 11 ft at 15 seconds.
Thu night..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 9 to 11 ft at 16 seconds.
Fri..NW winds up to 10 kt. Wind waves 1 ft. W swell 8 to 10 ft.
Sat..NW winds up to 10 kt. Wind waves 1 ft. W swell 6 to 8 ft.
PZZ500 835 Am Pst Tue Jan 28 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will increase today behind as passing weak front. Increasing winds will result in steeper wind waves.conditions will remain elevated through the work week. A long period northwest swell will arrive later this week.


7 Day Forecast for Marine Location Near Bodega Bay CDP, CA
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location: 38.31, -123.07     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 281734 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 934 AM PST Tue Jan 28 2020

SYNOPSIS. Light rain will be possible over the North Bay and as far south as San Francisco through early afternoon. Dry conditions are then forecast region-wide through the remainder of the week along with a gradual warming trend. Cooling is then forecast by Sunday and into early next week.

DISCUSSION. as of 08:26 AM PST Tuesday . Satellite imagery continues to show high level clouds just ahead of a weak front moving through the area as well as some patchy lower clouds. Radar has captured some light showers across the North Bay for much of this morning while observations recorded precipitation as far south as Oakland and San Francisco. Thus far, rainfall totals have been light, as expected, with a few hundredths to around a tenth of an inch along the coast of Sonoma County. Chances of light showers will continue into the early afternoon with areas south of the San Mateo coastline still expected to remain dry.

Temperatures across the region this morning are a few to several degrees warmer than this time yesterday as cloud cover overnight has prevent further cooling. Most locations are currently in the upper 40s to low 50s. Highs this afternoon are expected in the upper 50s to low 60s. Patchy low clouds may once again linger into the afternoon across the Bay Area after the system moves through. Forecast remains on track this morning with a warming trend anticipated for the rest of the week and into the start of the weekend before temperatures cool back down Sunday and Monday.

PREV DISCUSSION. as of 02:58 AM PST Tuesday . A mid/upper level system approaching the Pacific Northwest has pushed a frontal boundary into Northern California early this morning. Ahead of the boundary, high level clouds continue to advect inland while low level moisture in the boundary layer has also resulted in low clouds over much of the region. This cloud cover has kept temperatures generally in the upper 40s to lower 50s so far this morning.

Light rain associated with the front is being detected by regional radar over Northern California and as far south as Mendocino County. This will continue to advance inland and southward through the morning with light precipitation likely to develop over the North Bay around sunrise and then continue through mid-morning. Light rain may push as far south as San Francisco and the San Mateo coastline before dissipating by early afternoon. Thus, most areas to the south of the aforementioned areas will remain dry today. Areas that do receive rainfall will generally see amounts of one-tenth of an inch or less.

A warming trend will occur through the remainder of the week as high pressure over the eastern Pacific builds inland. With 850 mb temperatures forecast to approach 15 deg C by Friday and Saturday, look for daytime temperatures to be 5 to 10 degrees above seasonal averages. Widespread middle/upper 60s are likely with lower 70s across the interior. Cannot even rule out maximum temperatures reaching into the middle 70s by Sunday afternoon under mainly clear sky conditions.

Temperatures cool region-wide by Sunday and into early next week as the ridge is replaced by a broad mid/upper level trough. However, precipitation will likely remain to the north and east of the region. Longer range outlooks maintain dry weather conditions over much of the region through early February.

AVIATION. as of 09:31 AM PST Tuesday . For 18Z TAFs . Tricky forecast this morning as a weak boundary is moving through the Bay Area with variable flight categories and scattered showers. From N to S showers will gradually diminish through the day and may only be VCSH by the time the front reaches KMRY/KSNS. Behind the boundary will keep lingering cigs through tomorrow morning. Given the ample low level moisture tonight some patchy fog will be possible, especially at KSTS. Becoming VFR all terminals tomorrow afternoon. Overall confidence is medium.

Vicinity of KSFO . -SHRA possible through roughly 21Z then drying out. MVFR Cigs will lingering this evening through tomorrow morning. Some of the guidance shows a brief period of VFR early tonight, but not buying off on it. VFR more likely to develop tomorrow afternoon.

SFO Bridge Approach . Similar to KSFO. Lower clouds may impact visuals at times.

Monterey Bay Terminals . VFR currently as boundary approaches from the N. Do expect MVFR cigs to develop this afternoon then remain through early tomorrow.

MARINE. as of 09:27 AM PST Tuesday . Northerly winds will increase today behind as passing weak front. Increasing winds will result in steeper wind waves.Conditions will remain elevated through the work week. A Long period northwest swell will arrive later this week.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm



PUBLIC FORECAST: AS/RGass AVIATION: MM MARINE: MM

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 13 mi31 min WNW 5.8 G 9.7 55°F1027.4 hPa
PRYC1 - 9415020 - Point Reyes, CA 22 mi51 min 54°F1027.5 hPa (+0.0)
46214 - Point Reyes, CA (029) 33 mi51 min 55°F9 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 40 mi31 min WNW 5.8 G 9.7 55°F 54°F1028.3 hPa
46237 - San Francisco Bar, CA (142) 43 mi51 min 54°F7 ft
RCMC1 - 9414863 - Richmond, CA 44 mi57 min SE 2.9 G 4.1 53°F 54°F1027.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi40 min SSW 7 54°F 1028 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi57 min SW 11 G 14 54°F 1027.5 hPa
FTPC1 - 9414290 - San Francisco, CA 47 mi57 min SSW 5.1 G 8.9 55°F 54°F1028 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 47 mi57 min S 4.1 G 7 54°F 1028.5 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA20 mi58 minSW 310.00 miPartly Cloudy58°F52°F81%1026.3 hPa

Link to 5 minute data for KSTS

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Last 24hrCalmS4SW8W9W7SW4CalmS3W4SE3W4CalmCalmCalmCalmCalmSE6S5S3S5SE4CalmCalmSW3
1 day agoW7W9N6N8W7W7NW4W3CalmCalmCalmSE3CalmW3CalmCalmCalmCalmCalmCalmCalmCalmSE3Calm
2 days agoCalmCalmSW3W3SW3S5S5CalmSE3CalmS4CalmSW3S5SE5SE7S5S4SW5SW4CalmW6W10W10
G17

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
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Tue -- 01:41 AM PST     4.84 feet High Tide
Tue -- 07:12 AM PST     2.75 feet Low Tide
Tue -- 07:20 AM PST     Sunrise
Tue -- 09:43 AM PST     Moonrise
Tue -- 12:36 PM PST     5.09 feet High Tide
Tue -- 05:29 PM PST     Sunset
Tue -- 07:29 PM PST     0.47 feet Low Tide
Tue -- 09:17 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.14.74.84.543.432.82.93.33.94.655.14.73.92.91.810.50.511.92.9

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Tue -- 02:47 AM PST     -0.00 knots Slack
Tue -- 05:05 AM PST     -0.71 knots Max Ebb
Tue -- 07:19 AM PST     Sunrise
Tue -- 08:32 AM PST     0.00 knots Slack
Tue -- 09:43 AM PST     Moonrise
Tue -- 11:15 AM PST     0.65 knots Max Flood
Tue -- 02:03 PM PST     -0.00 knots Slack
Tue -- 05:13 PM PST     -1.12 knots Max Ebb
Tue -- 05:30 PM PST     Sunset
Tue -- 09:04 PM PST     0.00 knots Slack
Tue -- 09:17 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.70.4-0.1-0.5-0.7-0.6-0.4-0.20.20.50.60.60.40-0.4-0.9-1.1-1-0.8-0.4-00.40.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (15,3,4,5)
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Ground Weather Radar Station Sacramento, 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.