Tuesday, September26, 2017 L-36.com

Marine Weather and Tides
Catalina Foothills, 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 6:14AMSunset 6:15PM Tuesday September 26, 2017 11:09 AM MST (18:09 UTC) Moonrise 12:05PMMoonset 10:46PM Illumination 35% Phase: Waxing Crescent; Moon at 6 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 Catalina Foothills, AZ
   Hourly   EDIT   Help
location: 32.29, -110.91     debug

Area Discussion for - Tucson, AZ
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 ktwc 261618
area forecast discussion
national weather service tucson az
918 am mst Tue sep 26 2017

Synopsis Dry conditions today then isolated showers and
thunderstorms mainly near the new mexico border tonight. Expect
scattered showers and thunderstorms east of tucson Wednesday into
Wednesday night. Lingering moisture will maintain a slight chance of
showers and thunderstorms east of tucson Thursday into Saturday. Dry
conditions will prevail area wide Sunday into Monday.

Discussion No changes to the current forecast as models develop
an upper low over southwest arizona by tomorrow morning. This upper
low will help pull some moisture into extreme eastern arizona by
tonight. Large-scale lift associated with the low and increasing
moisture should be adequate enough to support a few showers or
thunderstorms in the white mountains and along new mexico state line
tonight and Wednesday. Dry elsewhere with highs today and Wednesday
hovering around seasonable readings.

Aviation Valid thru 27 18z.

Isolated to scattered -tsra -shra mainly east of a ksad-kdug this
evening into Wednesday morning. Otherwise, ktus vicinity westward
clear skies to scattered clouds above 15k ft agl. East of ktus
mainly clear skies this morning then scattered to occasionally
broken clouds at 6k-12k ft agl this afternoon into Wednesday
morning. Surface wind this afternoon and evening swly-nwly around 10
kts. Surface wind variable in direction less than 10 kts at other
times. Aviation discussion not updated for TAF amendments.

Fire weather Dry conditions today then isolated thunderstorms
mainly near the new mexico border tonight. Scattered showers and
thunderstorms east of tucson Wednesday and Wednesday night with dry
conditions west of tucson. Isolated showers and thunderstorms east
of tucson Thursday into Saturday with dry conditions elsewhere. Dry
conditions will then prevail area-wide Sunday into Monday. 20-foot
winds this afternoon southwest to northwest 5-10 mph. 20-foot winds
Wednesday into Saturday morning generally east to southeast at 5-15
mph with occasional gusts to 25 mph. Terrain driven winds returning
Sunday into Monday.

Prev discussion A highly amplified upper pattern exists over the
eastern pacific and western CONUS early this morning, with strong
high pressure centered near 28n 135w, and a deep trough over the
great basin desert southwest. The 26 00z gfs ECMWF cmc remained
consistent versus their respective previous solutions with depicting
a closed upper low to become centered late this afternoon near las
vegas nevada. This upper low is then progged to dig slightly further
south into west central arizona by daybreak Wednesday.

Dry conditions are forecast to continue across southeast arizona
today, then a few showers and thunderstorms may occur mainly near
the new mexico border tonight. Increasing moisture is expected to
occur across eastern sections Wednesday as the upper low moves
northeastward into northwest arizona. The gfs ECMWF cmc and the
26 00z univ of az wrf-nam and wrf-gfs were quite similar with
depicting the best chance of measurable precip to occur east of
tucson Wednesday.

Appears that the white mountains will have the best chance of
rainfall, but measurable rainfall chances decrease rapidly west of a
mt. Graham to bisbee line. In essence, these solutions are not
nearly as robust with precip chances further west to include the
tucson metro area versus solutions from 48 hours or longer ago.

Thus, pops were reduced to less than 10 percent for much of the
tucson metro area Wednesday and Wednesday night. However, have
maintained scattered coverage of showers tstms from just east of the
catalina rincon mountains eastward to the new mexico Wednesday into
Wednesday night. The upper low is progged to lift northeastward to
near salt lake city utah Thursday afternoon. Enough moisture should
exist to support isolated to perhaps scattered showers tstms east of
a mt. Graham to bisbee line Thursday into Saturday. The best
rainfall chances will continue across the white mountains.

Thereafter, the GFS depicted a deeper upper trough over the
intermountain west Sunday into Monday versus the flatter upper
trough progged via the ecmwf. Both solutions suggest that stronger
westerly flow aloft will shunt deeper moisture well east of this
forecast area. Thus, dry conditions to occur area-wide Sunday into
next Monday.

High temperatures today and Wednesday will generally range about 3-7
degrees below normal. Warmer temperatures will then occur Thursday,
then daytime temperatures Friday into next Monday will be near
seasonal normals or a few degrees above normal, depending upon

Twc watches warnings advisories None.

Prev discussion... Francis
aviation fire weather... Cerniglia
visit us on facebook... Twitter... Youtube... And at weather.Gov tucson

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
Davis-Monthan Air Force Base, AZ8 mi72 minSSE 410.00 miFair78°F23°F13%1008.5 hPa
Tucson, Tucson International Airport, AZ12 mi77 minS 510.00 miFair77°F21°F13%1008.9 hPa
Tucson Ryan Field Airport, AZ17 mi85 minENE 310.00 miFair77°F26°F15%1012.5 hPa

Wind History from DMA (wind in knots)
Last 24hrCalmW3W6W5NW9NW9NW9NW7NW8W7S6S5S7S6SE6S7SE6S5SE7SE8S6S8S4SW10
1 day agoN3SW5N12NW11
2 days agoNW6NW6W11W14

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)   Help
Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southwest    EDIT

Wind Forecast for Tucson, AZ (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Tucson, 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 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.