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SUNRISE MTN RIDGE'S
7 DAY DETAIL FORECAST FOR TUCSON FOOTHILLS, AZ.

National Weather Service Forecast for: 7 Miles NNE Tucson AZ
Issued by: National Weather Service Tucson, AZ
Updated: 9:29 pm MST Jul 24, 2021

Sunrise Mtn Ridge Tucson Az
 
Tonight

Tonight: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rain.  Mostly cloudy, with a low around 69. East wind around 6 mph.  Chance of precipitation is 60%.
Heavy Rain

Sunday

Sunday: Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rain.  Mostly cloudy, with a high near 87. Calm wind becoming west southwest 5 to 7 mph in the afternoon.  Chance of precipitation is 70%.
Heavy Rain

Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before 11pm. Some of the storms could produce heavy rain.  Partly cloudy, with a low around 70. West wind 5 to 7 mph becoming calm.
Heavy Rain
then Partly
Cloudy
Monday

Monday: A 20 percent chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 95. Calm wind becoming west 5 to 8 mph in the afternoon.
Slight Chance
T-storms
Monday
Night
Monday Night: Partly cloudy, with a low around 74. North northwest wind 5 to 7 mph becoming east after midnight.
Partly Cloudy

Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 98.
Chance
T-storms
Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 73.
Chance
T-storms then
Partly Cloudy
Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 99.
Chance
T-storms
Wednesday
Night
Wednesday Night: A 30 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 75.
Chance
T-storms then
Partly Cloudy

Lo 69 °F

Hi 87 °F

Lo 70 °F

Hi 95 °F

Lo 74 °F

Hi 98 °F

Lo 73 °F

Hi 99 °F

Lo 75 °F


Flash Flood Watch
 

Tonight
 
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 69. East wind around 6 mph. Chance of precipitation is 60%.
Sunday
 
Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 87. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
 
A 30 percent chance of showers and thunderstorms before 11pm. Some of the storms could produce heavy rain. Partly cloudy, with a low around 70. West wind 5 to 7 mph becoming calm.
Monday
 
A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 95. Calm wind becoming west 5 to 8 mph in the afternoon.
Monday Night
 
Partly cloudy, with a low around 74. North northwest wind 5 to 7 mph becoming east after midnight.
Tuesday
 
A 30 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 98.
Tuesday Night
 
A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73.
Wednesday
 
A 30 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 99.
Wednesday Night
 
A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75.
Thursday
 
A 40 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 100.
Thursday Night
 
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Friday
 
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Friday Night
 
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Saturday
 
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.

 

Forecast from NOAA-NWS for 7 Miles NNE Tucson AZ.




Tucson, Az - Area Forecast Discussion

Forecast Discussion for TWC NWS Office
000
FXUS65 KTWC 250438
AFDTWC

Area Forecast Discussion
National Weather Service Tucson AZ
938 PM MST Sat Jul 24 2021

.SYNOPSIS...An approaching weather system will continue an active
monsoon pattern through tomorrow. Showers and storms that develop
will be capable of producing heavy rainfall which combined with
already saturated ground will result in a high flash flood threat. A
decrease in storm activity is expected Monday through midweek. Below
normal temperatures will continue through early next week.

&&

.DISCUSSION...As a lobe rotates into the base of the upper low, a
more expansive area of convection has developed and is currently
south and east of Tucson. Not quite strong enough for lightning at
the moment but they continue to be efficient rain producers, more so
than a glance at radar would suggest. For example from Green Valley
west there is a band with 1-1.5 inches of rain in the last hour. This
will continue to pivot to the east and north over the next several
hours and will need to monitored for flood issues.

Then eyes turn to the second large area of convection headed south,
just north of Phoenix. This is associated with another lobe rotating
around the low and the last few runs of the HRRR suggest this will
continue to work south then east across Pima county to about as far
east as Tucson Sunday morning. Given the current setup that seems to
be a realistic scenario for the next 12-18 hours.

I raised pops for eastern areas earlier tonight then western areas
late tonight into Sunday morning and also adjusted the QPF grids as
well. The grids and updated forecast have already been sent.

&&

.AVIATION...Valid through 26/00Z.
SCT-BKN clouds at 7k-11k ft MSL thru the period, along with periods
of SHRA/TSRA. Expect MVFR CIGS/VSBYS and mountain obscurations around
TSRA along with gusty outflow winds, potentially in excess of 40 kts
with the strongest storms. Otherwise, SFC wind generally less than
12 kts. Aviation discussion not updated for TAF amendments.

&&

.FIRE WEATHER...Periods of heavy rainfall are expected through
Sunday, with scattered to numerous showers and thunderstorms.
Flooding issues are expected to continue, due to part to saturated
soils. Showers and storms will be possible through the day and also
at night. Gusty winds in excess of 40 mph and numerous lightning
strikes may accompany stronger storms. Daytime temperatures will
remain below normal. 20-foot winds will generally be less than 15 mph
when not influenced by thunderstorms. Shower and thunderstorm
chances decrease slightly Monday through the middle of next week.

&&

.HYDROLOGY...Given the chance for heavy rainfall and already
saturated soils the potential for flows in rivers and washes is
high.

A couple of potential trouble areas to make note of...Finger Rock
and Sabino Canyon. Significant sediment and silt have moved around
the Finger Rock area with Thursday night`s activity, causing some
localized damage. Any additional high rainfall rates in this area
could cause more trouble. Sabino Canyon also is an area to keep
an eye on, where high rainfall rates could cause issues quickly.

Most river forecasts across southeast Arizona show elevated stream
flow over the weekend. With high enough rainfall amounts other
locations could reach flood stage and possibly out of bank flow.
Stream flow may also take longer to recede if basin receives multiple
days of rainfall. Potentially leading to elevated stream flow into
early next week.

River observations and forecasts can be found at the following
sites:
https://water.weather.gov/ahps2/index.php?wfo=twc
http://www.cbrfc.noaa.gov

&&

.PREV DISCUSSION... /issued 304 PM MST Sat Jul 24 2021/
The low near the AZ/NM border will continue to dominate our weather
with elevated chances of showers and thunderstorms into Sunday. With
the ground now saturated, water basins will react very quickly with
any additional rainfall. Our Flash Flood Watch remains in effect
through Sunday evening.

The low is starting to fill a bit with the consolidated center
likely to lose some cohesion over the next 12 hours. Short range hi
res deterministics and ensembles are in pretty good agreement with
some elongation of the low as it pushes through Arizona, reaching the
southwest corner of the state by late tomorrow afternoon. Threat for
areas of showers and thunderstorms will remain high until then, with
subsidence behind the low tending to shut things down Sunday
evening.

The remnants of the inverted trough should make southern California
Monday, with our thoroughly-worked-over atmosphere taking a breather
to start the week. With precipitable water values falling back below
1.4 inches (probably down to about 1.25 or so), we should have a
couple of afternoons with below average storm coverage.

Ensemble means are suggesting the high will remain a little further
north than usual, so the easterlies will have plenty of room to
remain impactful for our area. Ensembles bring another inverted
trough into the weather picture the second half of next week, with a
solid impulse pushing across north central Mexico. That will set us
up for a strong surge by Thursday afternoon or Thursday night, with a
subsequent upturn in thunderstorms (which will probably continue a
trend that starts as early as Wednesday afternoon). If the high
shifts far enough eastward we could draw the remnants of that wave up
from the south and into Arizona Friday or Saturday. That would make
things interesting.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Sunday evening for AZZ501>515.

&&

$$

Public...Cerniglia/Meyer
Aviation...Zell
Fire Weather....Zell

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