Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Mammoth Lakes, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:54AMSunset 7:15PM Thursday March 23, 2017 1:15 AM PDT (08:15 UTC) Moonrise 4:11AMMoonset 2:47PM Illumination 19% 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 230414 aaa
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area forecast discussion... Updated
national weather service san joaquin valley - hanford ca
914 pm pdt Wed mar 22 2017

Synopsis A few storm systems will move through central
california during the next several days with episodes of
wet weather. Temperatures will average slightly cooler
than normal through early next week.

Update discussion Convection has died out for the most part.

Gradual clearing overnight with slightly cooler temps overnight
with some radiational conditions possible. Snow levels are around
7000 feet. We have lowered pops across the cencal interior as well
as cloud cover.

Prev discussion /issued 242 pm pdt Wed mar 22 2017/
discussion... Cold front currently extends from easternmost
fresno county southwwestward into central kern county with
a solid line of showers. A few of them have brought briefly
heavy rain accompanied by some thunder and lightning so far
today. Convection is likely to intensify along this frontal
boundary in the valley and higher elevations of kern county
this afternoon before exiting southeast of the CWA this
evening.

Other thunderstorm cells are popping up in the post frontal
environment from kings county northward into merced county as of
this writing and will likely intensify a bit during the next
few hours as the atmospheric environment becomes more unstable
and the associated upper level trough moves inland. A few
thunderstorms will be equipped with small hail, heavy downpours
and gusty winds. Most of the shower activity will diminish after
sunset except in the mountains of tulare county and kern county
where an upslope flow will generate just enough orographic lift to
support isolated showers into Thursday morning. Otherwise, short
wave ridging aloft will bring dry weather to the CWA Thursday
through Thursday night.

The models bring the next upstream trough into california Friday
evening. With its approach, we can expect an increase in
cloudiness across our CWA Friday. Although the models are now
slowing down the arrival of precip over the central california
interior Friday, a strengthening 300 mb jet could induce
orographic precip in the sierra primarily north of kings canyon by
Friday afternoon. Pops were trimmed back on Friday over the
southern half of the CWA based on the slower timing of the
models. Nonetheless, wet weather looks destined to move into much
of the central california interior by nightfall Friday as this
second upper level trough moves inland. The models forecast this
trough to exit into the great basin Saturday afternoon, during
which time the best chance of showers will probably be in the
mountains. Another short wave ridge aloft is progged to move over
central california Saturday evening through midday Sunday.

Although residual showers cannot be ruled out in the upslope areas
of the CWA during this time, dry weather should prevail.

A colder and stronger storm system is slated to move into the
central california interior Sunday evening through Monday with a
return of wet weather in most areas. The GFS is a little slower
and deeper with this trough than any of the other models. If so,
precip will linger over the mountains and desert through Tuesday.

We're leaning toward model consensus and the ensembles which
favor faster movement of this trough and dry weather on days 6
and 7. Additionally, it may be cold enough aloft Monday to
support the development of isolated afternoon thunderstorms with
small hail in the san joaquin valley and adjacent foothills.

Otherwise, each of these storm systems, the current one included,
will bring generally small accumulations of snow to elevations
above 7,000 feet during the course of the next five days. That's
good news for those who enjoy spring skiing in the sierra.

Aviation...

scattered showers and thunderstorms continuing across the
region through 05z Thursday. These will produce areas of MVFR
conditions with local ifr/lifr in heavier activity... Including
terrain obscurations in the mountains and foothills. Locally
gusty and erratic winds will also accompany the storms.VFR
conditions can otherwise be expected across the central california
interior for the next 24 hrs.

Aviation
Scattered showers and thunderstorms continuing across the
region through 05z Thursday. These will produce areas of MVFR
conditions with local ifr/lifr in heavier activity... Including
terrain obscurations in the mountains and foothills. Locally
gusty and erratic winds will also accompany the storms.VFR
conditions can otherwise be expected across the central california
interior for the next 24 hrs.

Air quality issues
None.

Certainty
The level of certainty for days 1 and 2 is medium.

The level of certainty for days 3 through 7 is medium.

Certainty levels include low... Medium... And high. Please visit


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mammoth Yosemite Airport, CA9 mi41 minW 710.00 miPartly Cloudy28°F20°F73%1014.9 hPa

Wind History from MMH (wind in knots)
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Last 24hrSW21
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CalmNW12W7W11
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1 day agoS9
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2 days agoCalmE6CalmSW5S4SE8SW3N4CalmE5CalmS6N5CalmN6E3N3NW7
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Joaquin Valley/Hanford, CA (4,6,7,8)
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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 numerious 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.