Thursday, December13, 2018

Marine Weather and Tides
Guadalupe, AZ

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:22AMSunset 5:23PM Thursday December 13, 2018 12:48 PM MST (19:48 UTC) Moonrise 12:00PMMoonset 11:11PM Illumination 37% 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 Guadalupe, AZ
   Hourly   EDIT   Help
location: 33.41, -112.04     debug

Area Discussion for - Phoenix, AZ
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 kpsr 131027
area forecast discussion
national weather service phoenix az
327 am mst Thu dec 13 2018

Update Updated aviation discussion.

Synopsis A weak cold front will move across the region today,
however, moisture will be insufficient for rainfall. Gusty winds
through this afternoon mainly across ridge tops. Slight cooling
will take place today but temperatures will remain at or above
normal. There will be off and on periods of thicker high clouds
tomorrow through Sunday before a slight chance of showers develops
next Monday through Tuesday.

The cold front is currently sweeping across the state from the
north and currently situated along a line stretching from
stafford, az northwest through parker, az. Behind the front we can
expect breezy conditions through this afternoon, but mainly across
ridge tops in southeast california and gila county. In addition
to elevated wind speeds, very dry air will follow the front, with
dew points dropping significantly this afternoon with minimum
humidity values mainly in the teens. Otherwise, expect mostly
sunny skies with high temperatures just around normal.

High pressure will quickly build behind this system through the
early part of the weekend with the ridge axis centered in the
middle of our forecast area by late this evening. Thus
temperatures tomorrow and through the weekend will be on a slight
warming trend with highs across the lower deserts near 70 by
Saturday. As the next weather system approaches from the west, we
can expect thick cirrus to start moving in on Friday night, with
these thicker clouds remaining in place through the weekend.

The next wave will move through our forecast area Sunday morning
through Monday morning, bringing more clouds and will also aid in
advecting some moisture into our region. The main trough will
then move over our region Monday night through Tuesday and will
have some moisture to play with. Between the first wave and the
time the main trough gets here, pws will increase from less than

4 inches to around 6 to .7 inches across our cwa. Taking a look
at tucson's sounding climatology for around the time our moisture
values peak, it looks like values between .6 and .7 inches would
be above the 90th percent moving average which is good for this
time of year. Thus precipitation chances will be on the increase,
with the greatest chances Monday night through Tuesday as that
main trough swings through our region. Greatest coverage will be
over the high terrain in southern gila county due to the combination
of forcing from the front and orographic lift. However, since pws
are still pretty low (we tend to like to see pws greater than 1
inch here) the amount of moisture precipitated into rain will not
be much and no QPF is expected. After the frontal passage, we
will once again have slightly elevated wind gusts on Tuesday, but
primarily over ridge tops in southeast california and in southern
gila county.

High pressure builds back into the region behind this system and
will remain in place through the end of the work week. Another
slight warming trend can be expected with highs rising back into
the low 70s Wednesday through Friday.

South-central arizona including kphx, kiwa, and ksdl:
no aviation concerns are expected through the period. Anticipate
light to occasionally light and variable winds favoring normal
diurnal sequences to prevail through the period. Skies will remain
mostly clear with a few high cirrus clouds passing through the

Southeast california southwest arizona including kipl and kblh:
expect light winds favoring the west at kipl and the north at kblh
through late morning, and then shifting to the east at both sites by
the early afternoon. Skies will also stay mostly clear with
occasional few high clouds.

Aviation discussion not updated for amended tafs.

Fire weather
Saturday through Wednesday:
minimal fire weather concerns through the period. An unsettled
weather pattern will develop on Saturday and remain in place
through the early part of next week. Minimum afternoon humidity
levels will be on the increase, with values around 15 to 25
percent on Saturday, rising into the 35 to 45 percent range by
Tuesday. Overnight recoveries will be good to excellent. Wind
speeds will remain light through Monday, before some breeziness
develops on Tuesday (mainly along ridge tops in southwest az and
southeast ca). On Wednesday, high pressure will build over the
region bringing clear skies and highs in the low 70s.

Spotter information statement
Spotters should follow standard reporting procedures.

Psr watches warnings advisories
Az... None.

Ca... None.

Discussion... Hernandez
aviation... Sawtelle
fire weather... Hernandez

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
Phoenix, Phoenix Sky Harbor International Airport, AZ2 mi57 minVar 310.00 miA Few Clouds62°F18°F18%1025.1 hPa
Scottsdale Airport, AZ15 mi55 minN 010.00 miFair61°F10°F13%1025.5 hPa
Glendale, Glendale Municipal Airport, AZ16 mi1.8 hrsN 010.00 miA Few Clouds61°F21°F22%1027.4 hPa
Chandler, Chandler Municipal Airport, AZ16 mi61 minN 1010.00 miFair63°F6°F11%1026.1 hPa
Mesa / Falcon Field, AZ17 mi54 minNNE 1010.00 miFair63°F3°F9%1024.6 hPa
Goodyear Municipal, AZ19 mi61 minVar 510.00 miA Few Clouds61°F21°F22%1026.7 hPa
Phoenix, Phoenix-Deer Valley Municipal Airport, AZ19 mi55 minN 010.00 miFair62°F10°F13%1025.2 hPa
Phoenix-Mesa Gateway Airport, AZ21 mi60 minNNW 845.00 miClear61°F10°F13%1026.4 hPa
Luke Air Force Base / Phoenix, AZ21 mi1.9 hrsN 310.00 miFair62°F16°F17%1026.2 hPa

Wind History from PHX (wind in knots)
Last 24hr3NW7W8W10W9W6CalmNW3E4W10CalmNE3E5Calm6NE4E3CalmSW4CalmE3CalmS33
1 day agoE5SE3S5SE7S5CalmNW5SW4CalmSW3W3SW4CalmCalmCalmE3CalmE3SE5E4E7SE6CalmCalm
2 days agoE10E6E7E5E4E5SE3E6E7E5SE3SE3E3SE5E3CalmSE6E5SE5SE6E5CalmNW4E6

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    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 Phoenix, AZ (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Phoenix, 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.