Saturday, September23, 2017

Marine Weather and Tides
San Luis, AZ

Version 3.4
What's New / NOTES
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 6:27AMSunset 6:34PM Saturday September 23, 2017 4:02 AM PDT (11:02 UTC) Moonrise 9:39AMMoonset 9:02PM Illumination 8% 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 San Luis, AZ
   Hourly   EDIT   Help
location: 31.65, -114.58     debug

Area Discussion for - Phoenix, AZ
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 kpsr 230901
area forecast discussion
national weather service phoenix az
200 am mst Sat sep 23 2017

A cold front will clear into new mexico today allowing substantially
cooler temperatures to fully spread across the region. Temperatures
will only slowly warm back to near average next week. A weak area of
low pressure may pull moisture back into eastern arizona by the
middle and end of next supporting some late season showers and

An unusually intense full latitudinal trough has deepened over the
western CONUS early this morning with objective analysis indicating
a -25c h5 cold core and PV anomaly centered over northern nevada.

This is more reminiscent of mid october versus mid september; and
while the magnitude and depth of cold air will not be as pronounced
through the southwest, anomaly measures in the lowest 5th percentile
will equate to temperatures some 10f below normal this weekend.

Otherwise, post frontal dry air has swept through all but far
eastern arizona with dewpoints in the teens not uncommon. However,
the elevated h8-h7 front still resides over eastern arizona and
satellite imagery shows some ACCAS juxtaposed with this weak
frontogentical region which may be capable of a stray light shower
or sprinkle this morning over gila county.

While the primary vorticity center and cold core will lift into the
northern rockies over the next 2 days, troughing will linger over
the forecast area only allowing a slow moderation in temperatures
through early next week. Given the abrupt change in airmass, have
trended temperature forecasts somewhat closer to raw guidance blends
and delightful afternoon highs only in the middle upper 80s will
grace the area this weekend. As h5 heights moderate back towards a
576-579dm range by Monday Tuesday, boundary layer temperatures will
respond with highs returning into the lower middle 90s. Granted,
this is only approaching the seasonal average so it could be much

Trends among ensemble and operational global models are now in a
majority pointing towards high pressure blocking over the SE conus
holding in place while east pacific ridging amplifies forcing
shortwave energy and lower heights into the southwest during the
middle and end of next week. This temporary western CONUS rex block
will allow winds through the atmospheric depth to back across much
of the forecast area pulling moisture from the rio grande valley and
over the continental divide. Spread among ensemble members regarding
the depth of the vorticity center, magnitude quality of moisture
advection, and eventual departure time of the shortwave ascent
remains rather large creating lower forecast confidence beyond
Wednesday. Regardless, have increased pops rather steeply for the
eastern quarter of the CWA Wednesday-Friday based on the model
trends towards a minimum of scattered mountain convection and
outflows isolated storms working into lower elevations.

South-central arizona including kphx, kiwa, and ksdl:
an upper low center tracking across the great basin is expected to
push rather dry air into the region through the TAF period with the
current sct mid high cloud layers dropping into the clr-few range by
late tonight Saturday. Winds to mainly follow typical diurnal
trends, but with westerly winds lingering a bit later than usual
into the late evening hours. Some afternoon gustiness can be
expected as well.

Southeast california southwest arizona including kipl and kblh:
a dry airmass to keep skies mainly clr through the TAF period. Winds
to remain mainly from a westerly to northwesterly direction at both
se ca TAF sites as well.

Aviation discussion not updated for amended tafs.

Fire weather
Monday through Friday:
a low pressure system will linger over the interior west through
Tuesday before beginning to shift eastward. Temperatures will climb
to near or slightly above normal by Thursday and Friday. Humidities
will be on the low side with minimum readings falling into the 10-25
percent range Monday through Thursday with fair-good overnight
recoveries. Some increase in humidities is possible by next Friday.

Anticipate north and northwesterly breeziness Monday and Tuesday
over southeast ca and southwest az. Otherwise, light winds.

Spotter information statement
Spotters should follow standard reporting procedures.

Psr watches warnings advisories
Az... None.

Ca... None.

Visit us on facebook, twitter, and at weather.Gov phoenix
discussion... Mo
aviation... Percha
fire weather... Percha aj

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
Yuma, Marine Corps Air Station, AZ70 mi65 minNW 810.00 miFair68°F44°F42%1005.3 hPa

Wind History from NYL (wind in knots)
Last 24hrNW12NW8NW11
1 day agoSE9S4CalmW3CalmSW3NW7334W11W6W11NW12NW13
2 days agoS3SE4N3NE5N44S9S5CalmS855S6SW9SW11W3S13SE10S6S5S4S6NW5SE3

Tide / Current Tables for El Golfo de Santa Clara, Sonora, Mexico
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
El Golfo de Santa Clara
Click for Map
Sat -- 03:32 AM MST     2.30 meters High Tide
Sat -- 06:27 AM MST     Sunrise
Sat -- 09:34 AM MST     -1.96 meters Low Tide
Sat -- 09:38 AM MST     Moonrise
Sat -- 03:32 PM MST     1.97 meters High Tide
Sat -- 06:33 PM MST     Sunset
Sat -- 09:01 PM MST     Moonset
Sat -- 09:41 PM MST     -2.14 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for San Felipe, Baja California Norte, Mexico
   EDIT      (on/off)   Help   One Week of Data
San Felipe
Click for Map
Sat -- 04:38 AM PDT     4.50 meters High Tide
Sat -- 06:27 AM PDT     Sunrise
Sat -- 09:38 AM PDT     Moonrise
Sat -- 10:42 AM PDT     0.01 meters Low Tide
Sat -- 04:43 PM PDT     4.19 meters High Tide
Sat -- 06:33 PM PDT     Sunset
Sat -- 09:03 PM PDT     Moonset
Sat -- 10:53 PM PDT     -0.15 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southwest    EDIT

Wind Forecast for Phoenix, AZ (7,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Yuma, AZ
   (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 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 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.