Monday, March30, 2020
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Marine Weather and Tides
Point Arena, 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 6:55AMSunset 7:32PM Monday March 30, 2020 12:58 PM PDT (19:58 UTC) Moonrise 10:00AMMoonset 12:00AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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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7 Day Forecast for Marine Location Near Point Arena, CA
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location: 36.95, -126.32     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 301838 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1138 AM PDT Mon Mar 30 2020

SYNOPSIS. Light rain showers will be possible over portions of the North Bay today while dry conditions are likely elsewhere. Dry weather, along with seasonable temperatures, are forecast for most of the remainder of the week. Rain chances return late in the week and potentially continue into early next week.

DISCUSSION. as of 08:30 AM PDT Monday . Satellite imagery shows patchy low clouds remain across much of the region this morning. Dry conditions expected today for the most part aside from possible showers over portions of the North Bay today as a weak cold front moves inland to the north. Areas elsewhere are unlikely to see any precipitation from this weak system, particularly south of the Golden Gate. This will keep cloudy skies over much of the North Bay while the rest of the region experiences some clearing. Temperatures this morning are within a few degrees of yesterday with most locations currently in the low to mid 50s. Afternoon highs are expected mainly in the low to mid 60s with chillier temperatures in the hills and over parts of the North Bay. Forecast remains on track this morning with no updates needed. For additional details please see the previous discussion.

PREV DISCUSSION. as of 03:01 AM PDT Monday . Dry weather conditions have returned region-wide in wake of the weak system that brought light rainfall to portions of the region yesterday. Meanwhile, partly to mostly cloudy conditions persist this morning with temperatures ranging from the middle 40s to middle 50s. Low clouds over the region may help to limit fog development this morning, especially over the North Bay. Another weather system pushing inland to the north will bring the potential for light rainfall over northern portions of Sonoma and Napa Counties today. Meanwhile, dry conditions are likely to persist to the south, especially south of the Golden Gate.

Seasonably cool and dry conditions are then likely to persist region- wide through much of the week. While the forecast late last week was advertising a warming trend through the workweek, confidence has increased that this scenario will not materialize. Instead, cyclonic flow aloft will persist as a long-wave trough persists over the West. With this, only expecting daytime temperatures to warm into the upper 50s along the immediate coast to 60s inland. While we cannot rule out a few interior locations reaching the lower 70s this week, temperatures generally will remain near to slightly below seasonal averages.

Forecast models bring precipitation back to the region late Friday night to the North Bay and then across the remainder of the region on Saturday. The deterministic models diverge late in the weekend into early next week, yet ensembles support an unsettled pattern continuing with chances of precipitation increasing during the week of April 6th.

AVIATION. as of 11:38 AM PDT Monday . For 18Z TAFs. Cloud ceilings are a mix of VFR and MVFR. Cloud cover will tend to persist over the North Bay today, elsewhere partial clearing and mixing should help lift MVFR to VFR. Residual cool air will interact with a weak warm front approaching the North Bay later today and tonight with periodic light rain developing, to the south generally dry weather continues. A cold front arrives at the North Bay late Tuesday afternoon and north Central Coast Tuesday evening or night.

Vicinity of KSFO . VFR, light wind from the east to southeast shifting to west 10 to 15 knots this afternoon. MVFR forecast tonight and Tuesday morning.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR, winds becoming west 10 to 15 knots this afternoon. MVFR forecast tonight and Tuesday morning.

MARINE. as of 10:41 AM PDT Monday . Generally light west to northwest winds will prevail over the coastal waters today except for gusty northwest winds over the southern inner waters and along the Big Sur Coast. By Tuesday afternoon and evening, winds are forecast to increase across all the waters, generating seas that are potentially hazardous to smaller vessels. Mixed swell will persist with a moderate northwest swell and a light southwesterly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm from 3 PM



PUBLIC FORECAST: AS/RGass AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Airport Reports
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Tide / Current Tables for
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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 (15,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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Disclaimer:
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.