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 6:35AM||Sunset 5:05PM||Friday January 19, 2018 3:32 AM PST (11:32 UTC)||Moonrise 9:13AM||Moonset 8:30PM||Illumination 7%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Ali Chuk, AZHourly EDIT Help
Area Discussion for - Tucson, AZ  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 ktwc 191022|
area forecast discussion
national weather service tucson az
322 am mst Fri jan 19 2018
Synopsis Dry rather warm again today. A pacific storm system
will then bring a good chance of valley rain and mountain snow
showers, slowly spreading in from the west Saturday before exiting
the area Sunday morning. Much cooler temperatures this weekend,
with a widespread freeze including tucson likely Saturday night
and or Sunday night. Dry conditions with a warming trend next
Discussion The next couple of days will be dominated by a
strong and broad trough of low pressure currently off the coast
of british columbia digging southward off the california coast.
Ahead of this a short-wave ridge is phasing quickly east and south
of our area this morning. The northerly flow we saw on the 00z
ktwc sounding will be weaker and start to become westerly with the
12z observation. Even as heights and thicknesses recede today
we'll have room for another degree or two of warming in valleys.
Precipitable water still running around 1 4 of an inch and dew
points in the teens to lower 20s. Just patches of cirrus level
moisture at times.
Good model agreement with handling the southern branch of the
trough as it comes onshore tonight and pushes through the central
and southern great basin into the central and southern rockies
Saturday. An equal blend of gfs ECMWF is fine, along with regional
and national blends. The timing of the associated cold front has
slowed about 3 or 4 hours (and may be a trend to watch with room
to slow down another 3 hours before it gets here). That pushes it
through our area a little later in the day on Saturday, with time
for temperatures to get a little warmer in the warm sector ahead
of it. A tough call around tucson, where we pushed daytime highs
up a few degrees Saturday. Best moisture and dynamics couplet for
our area will be just ahead of and with the frontal boundary, with
prime time between 18z Saturday and 03z Sunday. It still won't
have a lot of time to tap into a southerly fetch of moisture even
with a slightly more favorable trajectory, so still looking at
storm total precip values around .02 to .2 inches in valleys, and
2 to 4 inches in mountains. Snow levels will drop as low as 5000
feet with the best precip period Saturday afternoon. Snow amounts|
of around 1 inch at 5000 to 6000 ft, with 2 to 4 inches above
6k 7k ft. Snow levels will drop below 4k feet Saturday night
behind the front, but most of the moisture will be east of the
area. A few flurries with little or no accumulation in some
valley locations of cochise and graham counties Saturday night.
Freezing conditions possible across much of the area including the
greater tucson area Saturday night into Sunday morning, but that
will be somewhat dependent on clearing from the west overnight.
Our coldest valley temperatures will probably be Sunday night
into Monday morning with the cold air mass in place, clear skies
and light winds. Teens to lower 20s in colder valley locations
south and east of tucson, with upper 20s to lower 30s from tucson
westward. It has been about a month since our last freeze around
tucson, with most of that period spent well above average; a
freeze warning may be warranted.
Shortwave ridge to zonal flow the first half of the new week for a
steady warming trend and dry conditions. Morning lows will remain
on the cool side for a few days.
Aviation Valid thru 20 12z.
Few-sct clouds above 20k ft agl through this evening, becoming bkn
late in the period. Sfc wind generally ely sely at less than 10 kts
this morning. Expect sly swly winds at 8-12 kts this afternoon into
Saturday morning. Aviation discussion not updated for TAF amendments.
Fire weather Dry conditions through tonight. Valley rain and
mountain snow chances will increase from west to east on Saturday.
The system will clear out of the region quickly, with precipitation
chances decreasing Saturday night and Sunday morning. Dry conditions
will return Sunday afternoon and continue into next week. Gusty west
to southwest winds will occur Saturday afternoon and evening.
Otherwise, 20-ft winds will be terrain driven at mainly less than 15
Twc watches warnings advisories None.
visit us on facebook... Twitter... Youtube... And at weather.Gov tucson
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Yuma, Marine Corps Air Station, AZ||114 mi||95 min||E 3||10.00 mi||Fair||54°F||32°F||43%||1014.7 hPa|
Wind History from NYL (wind in knots)
|1 day ago||NE||N||E||NE||NE||NE||N||NE||NE||NE||N||N||N||N||N||N||Calm||Calm||NE||S||Calm||N||N||N|
|2 days ago||NE||NE||N||NE||NE||N||NE||NE||N||NE||NE||NE||N||N||N||NE||N||N||NE||N |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Puerto Penasco |
Click for Map
Fri -- 03:13 AM MST 4.54 meters High Tide
Fri -- 07:31 AM MST Sunrise
Fri -- 09:12 AM MST Moonrise
Fri -- 09:18 AM MST 0.27 meters Low Tide
Fri -- 03:06 PM MST 3.63 meters High Tide
Fri -- 05:56 PM MST Sunset
Fri -- 08:30 PM MST Moonset
Fri -- 09:09 PM MST -0.48 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|El Golfo de Santa Clara |
Click for Map
Fri -- 03:29 AM MST 2.77 meters High Tide
Fri -- 07:37 AM MST Sunrise
Fri -- 09:18 AM MST Moonrise
Fri -- 09:37 AM MST -1.84 meters Low Tide
Fri -- 03:19 PM MST 1.80 meters High Tide
Fri -- 06:01 PM MST Sunset
Fri -- 08:35 PM MST Moonset
Fri -- 09:26 PM MST -2.62 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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 (6,6,7,8)(on/off)  Help
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.