Tuesday, March20, 2018 L-36.com

Marine Weather and Tides
Fresno, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:59AMSunset 7:12PM Tuesday March 20, 2018 1:07 AM PDT (08:07 UTC) Moonrise 9:10AMMoonset 10:41PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near Fresno, CA
   Hourly   EDIT   Help
location: 36.78, -119.79     debug

Area Discussion for - San Joaquin Valley/Hanford, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 khnx 192200
area forecast discussion
national weather service san joaquin valley - hanford ca
300 pm pdt Mon mar 19 2018

Synopsis Clouds will increase tonight with the approach
of a storm over the eastern pacific. This storm will bring
substantial precipitation to the district from late Tuesday
through Thursday along with very mild temperatures over the
higher elevations. Friday through Saturday will be dry and
unseasonably cool.

Discussion Our last full day of winter is turning out to
be a pleasant, sun-filled day. It's the proverbial "calm
before the storm", so to speak. The storm we're referencing
is poised over the eastern pacific this afternoon and it's
going to pack a wet wallop when it arrives by midweek. With
its approach, the storm will spread thicker clouds over the
central california tonight. Clouds will continue to lower
and thicken across much of the CWA Tuesday, but until the
deeper moisture gets here toward sunset, precipitation out
of these clouds will be light... Probably little more than
sprinkles in the valley and foothills and some snow flurries
over the highest elevations of the sierra.

This storm will be in no hurry to move eastward during the
next 2-3 days. In fact, the models have now slowed its
eastward progression and don't bring this system inland
over california until Thursday night. Up until then, a
broad southwesterly flow aloft in advance of this system
will carry a plentiful supply of rich subtropical moisture
into central and southern california. Upper level disturbances
embedded in this southwesterly flow will bring episodes of
precipitation into the cwa, and at times this precip will
fall heavily, especially in the orographically enhanced
regions such as the west slopes of the sierra and the south
facing slopes of the tehachapi mountains. Considering its
subtropical origins, this moisture will be accompanied by
very mild air during the next couple of days. During the height
of this storm Wednesday, snow levels may be up around 9,000
feet in the sierra. So rain combined with melting snow will
cause rising water levels on area streams, excess runoff
and possible flooding. The greatest threat of flooding will
be in the foothills and higher elevations of the sierra below
the snow level from Wednesday afternoon through Thursday
evening. During this time, some roads could become washed
out or impassable because of debris flows, rock slides and or
mud slides. Above 8,000 feet where precip will fall primarily
as snow in the sierra, accumulations of up to 4 feet are possible
by late Thursday. Elsewhere, here is the general breakdown of
how much rain we're expecting by region from this storm through
southern sierra below 8,000 feet... 3-6 inches
sierra foothills... .2-4 inches
san joaquin valley... 0.50-2 inches (heaviest on the east side)
kern county mountains... 1.5-3 inches
kern county desert... 0.25-0.75 inches
colder air will begin to move southward into the CWA Thursday
evening, however by then, the heaviest precipitation will have
ended. Nonetheless, snow levels will probably lower to between
5,000 feet and 6,000 feet Thursday night and Friday. During
this time, snow showers at these elevations could leave a small
accumulation. Otherwise, a blustery, colder change in the
weather will take place across the central california interior
Thursday evening through Friday as the storm system finally
exits east of the golden state. A generally dry west to northwest
flow aloft in the wake of this storm system will reside over
central california in the 5 to 7 day period. At the start of
the weekend, a few showers could still linger over the sierra
and the adjacent foothills from fresno county northward. If so,
they won't leave more than an additional tenth of an inch of
precipitation. Friday through the weekend will also average
much cooler than normal, however, next Monday should finally
become more seasonable.

In summary, although our midweek storm will bring generous
precipitation into much of central and southern california, it
will relieve but not end the drought. True, the rain is a great
thing, but too much of a good thing in a short period of time
can bring its share of hazardous impacts. Areas normally prone
to flooding may do so and many area streams will probably
experience water rises later this week. Folks need to be wary of
this and avoid driving on roads ponded with water. If you live
in a flood prone area or near a burn scar, be prepared to move
to a safer place should a threat of flooding occur. Hikers and
campers in the highest elevations of the sierra should also be
prepared for potentially crippling snow and blowing snow by

Vfr conditions will prevail accross 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

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fresno, Fresno Air Terminal, CA4 mi75 minE 310.00 miPartly Cloudy55°F39°F55%1017.2 hPa
Madera Municipal Airport, CA22 mi75 minN 010.00 miFair53°F43°F69%1017.2 hPa

Wind History from FAT (wind in knots)
Last 24hrCalmN3NW3N3CalmCalmCalmCalmSW54SE6CalmSE43CalmSW5CalmW6W4NE5CalmNE3E3NE3
1 day agoCalmCalmSE4CalmCalmE3CalmSE3S43SE5S7CalmCalmN3W6W10NW7N5NW6NW4NW3W3NW4
2 days agoCalmNE3CalmCalmCalmCalmCalmE3CalmCalmNW4W4E3NE3W5W5W17W12W10N6NE6E4CalmCalm

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
GOES Local Image of Southwest    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 (4,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Joaquin Valley, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.