Monday, January20, 2020
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Marine Weather and Tides
Mammoth Lakes, 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 7:07AMSunset 5:11PM Monday January 20, 2020 10:58 AM PST (18:58 UTC) Moonrise 4:23AMMoonset 2:37PM Illumination 20% Phase: Waning Crescent; Moon at 25 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 Mammoth Lakes, CA
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location: 37.67, -118.99     debug


Area Discussion for - San Joaquin Valley/Hanford, CA
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FXUS66 KHNX 200950 AFDHNX

Area Forecast Discussion National Weather Service Hanford CA 150 AM PST Mon Jan 20 2020

SYNOPSIS. Slight chance of precip in the Sierra Nevada today and tomorrow as a disturbance passes to our north. Dry weather through the rest of the work week as a ridge of high pressure builds, which will also be conducive to morning fog in the valley. Next chance of precip may occur later this weekend.

DISCUSSION. Latest GOES 17 satellite IR imagery reveals high clouds progressing over the district early this morning. Currently expecting morning lows to be around 39-42 degrees across most of the San Joaquin Valley. Some mixing may occur this morning ahead of the disturbance to our north, potentially preventing widespread fog across the Valley. Precipitation is possible in the Sierra Nevada this afternoon through tomorrow afternoon for Fresno County and northward, but model guidance is showing QPF totals to be scant as the main precip will be further north, associated with the upper low. Gradients in Kern County may tighten up by Tuesday afternoon through Wednesday morning to generate gusty winds in the Kern County mountain passes and Mojave Desert.

Wednesday, models are in agreement that a ridge of high pressure will begin to build over Central California. This will lead to a period of dry weather with morning bouts of fog likely across the Central Valley. Upper ridge will begin to weaken by the end of the work week as an upper trough approaches the west coast. Blended model guidance is showing a chance of precip for the forecast area by Sunday as the trough nears, however the location and timing of the trough this far out is somewhat unclear. Either way, it will likely break up the stagnant weather pattern that is forecast to occur for the latter portion of this work week. Details regarding this system will be ironed out with additional model guidance.

AVIATION. In the San Joaquin Valley, MVFR visibility due to mist through 18z Monday, with local IFR to LIFR conditions due to fog also through 18z Monday. Otherwise, VFR conditions are expected across the central CA interior for the next 24 hours.

AIR QUALITY ISSUES. On Monday January 20 2020 . Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno . Kern . Kings . Madera . Merced and Tulare Counties. Further information is available at Valleyair.org


CERTAINTY.

The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium.

Certainty levels include low . medium . and high. Please visit www.weather.gov/hnx/certainty.html for additional information an/or to provide feedback.

HNX WATCHES/WARNINGS/ADVISORIES. None.

public/aviation . Bollenbacher fire weather/PIO . Andersen

weather.gov/hanford


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mammoth Yosemite Airport, CA9 mi82 minSSE 510.00 miFair27°F19°F74%1022 hPa

Link to 5 minute data for KMMH

Wind History from MMH (wind in knots)
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Last 24hrSE3SE3CalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmCalmCalmN4SW4CalmCalmCalmSE5Calm
1 day agoSE3CalmCalmSE3----CalmCalmCalmCalmCalmN3CalmCalmN3CalmCalmSE4Calm--CalmCalmCalmCalm
2 days agoCalmSE5CalmCalmSE3E5CalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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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 Joaquin Valley/Hanford, CA (13,3,4,5)
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Ground Weather Radar Station San Joaquin Valley, CA
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weather_mapweather_map weather_map

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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.