Wednesday, August21, 2019

Marine Weather and Tides
Rillito, AZ

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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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Sunrise 5:51AMSunset 7:04PM Wednesday August 21, 2019 12:34 AM MST (07:34 UTC) Moonrise 10:42PMMoonset 11:13AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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
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7 Day Forecast for Marine Location Near Rillito, AZ
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location: 32.34, -111.15     debug

Area Discussion for - Tucson, AZ
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Fxus65 ktwc 210343
area forecast discussion
national weather service tucson az
843 pm mst Tue aug 20 2019

Synopsis Hot, near or above record high temperatures will be
around once again on Wednesday with dry conditions for most of the
area. Increasing moisture will bring increasing thunderstorms to
the area with temperatures falling back to near normal by Friday
into the weekend.

Discussion Several heat records fell around the area today, but
tucson airport came up 1 degree short. More of the same for much
of the area tomorrow, however a moisture increase is underway with
outflows from new mexico pushing into cochise county this evening.

Easterly winds around 15kts at douglas and dew points jumped from
38 to 49 over the past 90 minutes. Our moisture increase from
direct outflow from the east and south, and a moderate gulf surge
working it's way into the northern gulf. We should be back in
business with a strong fetch of deeper moisture Thursday night
into Friday and Saturday. A strong increase in thunderstorms and
temperatures falling back to near normal is still a solid forecast
trend. Please see the previous discussion below for additional

Aviation Valid through 22 06z.

Few-sct clouds at 12k-16k ft msl thru the forecast period. There
is a slight chance of -tsra -shra near the az nm border including
near kdug and across the white mountains into late this evening.

Isold- sct -tsra -shra redevelop Wednesday afternoon from
ktus kols eastward. Sfc wind generally nwly into this evening at
less than 12 kts with a few gusts to 15-20 kts. Terrain driven
winds less than 10 kts persist overnight with SW to NW winds
Wednesday afternoon mainly less than 12 kts. Aviation discussion
not updated for TAF amendments.

Fire weather Better coverage of showers and thunderstorms
begin tomorrow mainly east of tucson and spread westward and
northward into Saturday. Near record high temperatures are
expected through Wednesday, but the return of deeper monsoonal
moisture will allow temperatures to fall back to near seasonal
levels by Friday. Any thunderstorms that do develop may produce
gusty and erratic outflow winds. Otherwise, 20-ft winds will
generally follow normal diurnal trends at less than 15 mph.

Climate Another day of record to near record highs tomorrow
across southeast arizona. Below are the forecast highs for
Wednesday versus the daily record highs for selection locations
across southeast arizona.

Date aug 21
fcst rcd yr
tucson intl airport 109 108 1930
bisbee-douglas airport 98 98 2011
ajo 111 115 1915
kitt peak 91 86 2010
organ pipe cactus n.M. 111 112 1969
picacho peak 109 108 1999
safford ag station 105 105 1986
sierra vista 97 97 2013
tombstone 98 101 1938
willcox 100 105 2009
temperatures cool to near normal over the weekend before warming
up once again early next week with near record highs possible next

Prev discussion issued 220 pm mst Tue aug 20 2019
very hot for august with record to near record high temperatures
around today and once again tomorrow. Excessive heat warning is in
effect until 8 pm Wednesday for the lower elevations of pima,
pinal and graham counties. Moisture limited across the area today
with values mostly less than 1". The exception is right along the
az nm border where values are slightly above 1". So a few storms
possible along the az nm border and also along the intl border
east of nogales.

For tonight, will see low level moisture values increase
associated with outflows coming out of new and old mexico. The
outflow out of new mexico may generate a few showers storms across
cochise county later tonight that may persist into Wednesday
morning, per uofa wrfnam.

Wednesday: pwat values increasing into the 1" to 1.30" range with
highest values south of tucson. This will result in an increase
in thunderstorms, in the isolated to scattered range mainly south
and east of tucson.

Thursday: pwats will be ranging from 1" east to over 1.5" west
with best chances for storms being west and south of tucson.

Localized heavy rainers with light and variable steering flow.

Friday: the steering flow becomes more easterly across the area
and combined with pwat values similar to Thursday and a weak
inverted trof passing through sonora looking at the most active
convective day in almost two weeks with the potential for activity
to continue into the overnight hours.

Saturday: upper level ridge axis north of the area will put the
area under NE flow aloft which will bring an increasing chance
for a rim shot event.

Sunday: lingering moisture around for the chance of afternoon and
evening storms.

Monday and Tuesday: conditions start to dry out with lowering pwat
values as upper high center settles over the area.

Temperatures will be cooling later in the week and continuing
into the weekend where highs could be at or a few degrees below
normal. That will be short lived as highs warm back above normal
early next week with the potential for near record highs once
again next Tuesday.

Twc watches warnings advisories
Excessive heat warning until 8 pm mst Wednesday for azz501-502-

Meyer g c
visit us on facebook... Twitter... Youtube... And at weather.Gov tucson

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tucson Ryan Field Airport, AZ14 mi4.8 hrsno data10.00 miFair99°F39°F13%1011.2 hPa
Davis-Monthan Air Force Base, AZ18 mi97 minNNW 310.00 miFair88°F46°F24%1006.5 hPa
Tucson, Tucson International Airport, AZ19 mi42 minN 010.00 miFair89°F43°F20%1006.7 hPa

Link to 5 minute data for KDMA

Wind History from DMA (wind in knots)
1 day agoSE6S4S6CalmCalmS3SE6CalmCalmW5----N4NW6CalmNW5N8NW10NW10NW7--NW5Calm--
2 days agoSE6SE3SE10SE9SE6E5SE5SE5E5SW6SW5SW5NW8W12

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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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 Tucson, AZ (3,6,7,8)
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Ground Weather Radar Station Tucson, AZ
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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.