Marine Weather and Tides
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.
|Sunrise 6:49AM||Sunset 6:49PM||Tuesday September 26, 2017 4:09 AM PDT (11:09 UTC)||Moonrise 12:50PM||Moonset 11:10PM||Illumination 33%|
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7 Day Forecast for Marine Location Near Big Creek, CAHourly EDIT Help
Area Discussion for - San Joaquin Valley/Hanford, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 khnx 260926|
area forecast discussion
national weather service san joaquin valley - hanford ca
226 am pdt Tue sep 26 2017
Dry weather will continue this week with temperatures climbing to
a few degrees above normal. Temperatures will lower back to near
normal this weekend with a cooler onshore flow and increased winds.
Northerly flow aloft continues over california with an upper ridge
over the eastern pacific and a long wave trough over the western
interior. The ridge will slowly build inland to the north through
Wednesday while an upper low forms over the lower colorado river
valley. This will continue the warming trend of the last few days.
High temperatures are forecast to be a few degrees above normal
by Wednesday then little changes through the end of the work week.
There is good model agreement with an upper trough moving over the
pacific northwest on Saturday. But the models then diverge Sunday
with the ECMWF tracking the trough east over the northern rockies,
while the GFS digs it south over the great basin. For now, modest
cooling is forecast with temperatures back down near normal this
weekend. The gem favors the ecm, but then drops another trough|
over california early next week. The forecast remains dry but the
gem solution suggests precipitation by next Monday as a cold front
An offshore surface pressure gradient continues with some breezy
conditions over the mountains. An upper jet diving down from the
north will provide some upper level support. This could produce
an increase in winds with gusty northeast winds over the ridges
and through drainages into the foothills today through Wednesday
morning. The gradient relaxes later this week then turns onshore
Saturday with gusty westerly winds through and below the passes.
Vfr conditions will prevail throughout the central california
interior during the next 24 hours.
Air quality issues
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
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Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Mammoth Yosemite Airport, CA||34 mi||74 min||W 8||10.00 mi||Fair||35°F||22°F||60%||1022 hPa|
Wind History from MMH (wind in knots)
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|2 days ago||NW||W||W||W||W||NW||NW||W||Calm||W||N||NW||N|
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of CentralWestCoast EDIT
Wind Forecast for San Joaquin Valley/Hanford, CA (7,2,3,4)(on/off)  Help
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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 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.