Marine Weather and Tides
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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|Sunrise 5:51AM||Sunset 7:00PM||Friday August 23, 2019 3:46 AM MST (10:46 UTC)||Moonrise 11:56PM||Moonset 1:07PM||Illumination 46%|
7 Day Forecast for Marine Location Near Catalina Foothills, AZHourly EDIT Help
Area Discussion for - Tucson, AZ  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 ktwc 230921|
area forecast discussion
national weather service tucson az
221 am mst Fri aug 23 2019
Synopsis A more active monsoon pattern will continue today and
Saturday with temperatures returning to near or slightly below
normal. A drying trend resumes Sunday with isolated storms limited
to near the international border as high pressure starts to build
back in overhead. Dry conditions generally prevail Monday and
Tuesday with above average temperatures returning. Thereafter,
moisture returns by Wednesday for another chance for showers and
thunderstorms will then exist toward the latter half of next week.
Discussion After an active evening last night, things are much
quieter this morning as convection has diminished and we are left
with some debris cloudiness as IR satellite shows cloud tops have
been warming over the past few hours. Moisture has increased
dramatically with ample moisture transport into southern arizona due
to a strong gulf surge. Dewpoints are currently in the 60's from
tucson westward and in the 50's to the east of tucson.
Correspondingly, the latest gps pwat values are in the 1.5 inch
range for tucson.
Today is likely to be another active day across much of the region.
There are still some uncertainties, especially with how much solar
insolation is available and how worked over the lower atmosphere
will be from the convection last night. In the upper levels, an h3
trough axis will be located across the eastern half of the area and
may help aiding lift as anvils also track east to southeastward. In
the lower to mid levels, a general slow steering flow of the storms
towards the west is expected which is favorable since it will be
away from the anvils. The latest cams including the hrrr, uofa wrf-
nam and uofa wrf-gfs are all fairly active today. Given the deep
moisture available, slower moving storms and antecedent wet
conditions from yesterday in some locales, the primary concern will
be heavy rain and the potential for flash flooding. The most likely
location to see widespread storms will be along the international
border across santa cruz and SW cochise counties with isolated to
scattered storms elsewhere. We did consider a possible flash flood
watch for portions of the area, but confidence is still a bit low so
will defer possible issuance to the day shift.
A favorable pattern is once again expected on Saturday with isolated
to scattered showers and thunderstorms, especially for the southern
half of the area where the deepest moisture is expected. A drying|
trend will commence on Sunday as the mid upper level starts to build
southward and strengthen with increasing heights. There will still
be enough moisture for isolated showers and thunderstorms near the
international border Sunday afternoon with generally dry conditions
Thereafter, dry conditions are generally expected to
prevail Monday and Tuesday as the mid upper level high peaks in
intensity as well above normal temperatures return with the heat
The hot and dry period early next week will be somewhat short lived
as the combination of the mid upper level high shifting a bit
northward and increased lower level moisture will result in an
uptick in convective activity starting Wednesday with slightly
cooler temperatures following by late next week as well.
Aviation Valid through 24 12z.
Isolated -tsra -shra developing east to south of ktus 18z-20z today.
Scattered to numerous -tsra -shra across much of southeast arizona
later this afternoon into this evening. Expect decreasing coverage
of -tsra -shra tonight with the bulk of -tsra -shra ending by
daybreak Saturday or at end of valid period. Brief wind gusts to 45
kts and MVFR CIGS vsbys with the stronger tsra. Otherwise, cloud
decks mainly 12k-18k ft msl. Surface wind this afternoon wly nwly 8-
15 kts with gusts near 20 kts. Surface wind variable in direction
mostly under 12 kts at other times and aside from TSTM gusts.
Aviation discussion not updated for TAF amendments.
Fire weather Scattered to numerous thunderstorms across much of
southeast arizona this afternoon and evening. The bulk of
thunderstorms should end by daybreak Saturday. Scattered
thunderstorms Saturday afternoon and evening favoring southeast to
southwest of tucson, and across the white mountains. Expect only
isolated thunderstorms Sunday followed by dry conditions across much
of the area Monday into Tuesday. Scattered mainly afternoon and
evening thunderstorms should return next Wednesday and Thursday.
Aside from thunderstorm wind gusts, 20-foot winds will be terrain
driven mainly under 15 mph.
Twc watches warnings advisories None.
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Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Davis-Monthan Air Force Base, AZ||8 mi||1.8 hrs||Var 3||10.00 mi||Mostly Cloudy||79°F||64°F||61%||1013.2 hPa|
|Tucson, Tucson International Airport, AZ||12 mi||1.9 hrs||SSE 10||10.00 mi||Fair||78°F||61°F||56%||1007.6 hPa|
Link to 5 minute data for KDMA
Wind History from DMA (wind in knots)
|1 day ago||Calm||Calm||SE||SE||SE||S||E||Calm||S||W||NW||N|
|2 days ago||SE||SE||SE||SE||SE||SE||Calm||N||W||SW||NW||N||SW||NW||NW||NW||NW||NW||NW||NW||NW||SE||Calm||Calm|
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Wind Forecast for Tucson, AZ (6,6,7,8)(on/off)  Help
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