Wednesday, August21, 2019

Marine Weather and Tides
Sierra Vista, AZ

Version 3.4
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at Allen

Sunrise 5:49AMSunset 6:59PM Wednesday August 21, 2019 5:12 PM MST (00:12 UTC) Moonrise 10:40PMMoonset 11:09AM Illumination 62% Phase: Waning Gibbous; Moon at 21 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 Sierra Vista, AZ
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location: 31.57, -110.31     debug

Area Discussion for - Tucson, AZ
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Fxus65 ktwc 212155
area forecast discussion
national weather service tucson az
255 pm mst Wed aug 21 2019

Synopsis Today is the last day of record highs with the area
now transitioning into a more active thunderstorm pattern that is
typical for late august. This active pattern will last into the
weekend before turning off early next week as high pressure aloft
builds over the area. After temperatures cool to near or slightly
below normal this weekend, hot near record high temperatures
return by next Tuesday.

Discussion Last day of record heat this week with the hottest
temperatures across pinal and pima counties in the 110 to 114
range. Tucson set daily record high of 109 degrees at 2:35 pm
with time to still reach 110. Excessive heat warning remains in
effect for the lower elevations of pima, pinal and graham counties
until 8 pm this evening.

Surface dewpoints have mixed out into the upper 40s and lower 50s
this afternoon but they are up 10 to 15 degrees across cochise and
santa cruz counties versus 24 hours ago. And we have seen the
resultant increase in thunderstorm activity this afternoon versus
the past week. These thunderstorms south and east of tucson
mostly over the higher terrain with main threat being very strong
gusty winds, some severe levels, and very brief heavy rain where
pwat values are in the 1" to 1.2" range. Have already seen some
gauges record over 1" in less than one hour. A few of these will
be able to move out into the valleys into this evening.

A gulf surge of moisture is currently moving up the gulf of ca.

This increase moisture will move into the desert later tonight
into Thursday with pwat values west of tucson increasing
dramatically from around 0.80" today to up to 1.5" tomorrow. Focus
of storms tomorrow will be west and south of tucson with strong
gusty winds and very localized heavy rainers. Strong thunderstorm
outflows west of tucson will produce areas of blowing dust, which
has been added to the forecast in the afternoon forecast package.

This welcomed return to an active monsoon pattern continues
Friday into the weekend before turning off again early next week
as the area heats up once again with record highs possible again
next Tuesday. Then there is new christened tropical storm ivo,
located around 490 miles south of the southern tip of baja
california, per latest advisory, that could be a added moisture
player heading into the weekend.

Aviation Valid through 23 00z.

Few-sct clouds at 10k-14k ft msl west of ktus and sct-bkn clouds
south and east of ktus. Isolated to scattered -tsra -shra this
afternoon from ktus kols eastward with brief MVFR vsby cigs
possible, particularly near terrain. Precip decreasing this evening
though a few -shra could linger overnight near kdug. -tsra -shra
then redevelop Thursday afternoon south and east of ktus. -tsra
outflows could produce winds to around 40 kts. Otherwise, sfc wind
mainly SW to NW this afternoon at less than 12 kts becoming sly
overnight. Sfc wind wly 10-14 kts Thursday afternoon. Aviation
discussion not updated for TAF amendments.

Fire weather Isolated to scattered showers and thunderstorms
today mainly south and east of tucson. Thunderstorm chances spread
north and west to include much of the remainder of southeast arizona
starting Thursday and continuing into the weekend before drier
weather returns next week. 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 across
southeast arizona. Below are the forecast highs for today, august
21st, 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 99 98 2011
ajo 112 115 1915
kitt peak 92 86 2010
organ pipe cactus n.M. 112 112 1969
picacho peak 100 108 1999
safford ag station 105 105 1986
sierra vista 97 97 2013
tombstone 99 101 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

Twc watches warnings advisories
Excessive heat warning until 8 pm mst this evening for azz501-

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Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Huachuca, Libby AAF Ft Huachuca, AZ1 mi74 minSSW 16 G 2110.00 miThunderstorm in Vicinity92°F44°F19%1009.2 hPa
Pioneer Airfield, AZ7 mi76 minSSW 14 G 2410.00 miA Few Clouds87°F45°F23%1007.1 hPa

Link to 5 minute data for KFHU

Wind History from FHU (wind in knots)
Last 24hrNW3CalmSW5--------SE4SE8--W5W7----W5CalmCalmE3NW3E4CalmSW15SW14S16
1 day agoCalmN4NW7------------SW4SW6CalmS5S6CalmCalmCalmNE7CalmE6W4--S6SW3
2 days agoW9

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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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.
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Wind Forecast for Tucson, AZ (20,4,5,8)
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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.