Severe Thunderstorm Warning 9, NWS Tucson, AZ

988 
WWUS55 KTWC 232129
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
229 PM MST Sun Jun 23 2024

AZC019-023-232200-
/O.CON.KTWC.SV.W.0009.000000T0000Z-240623T2200Z/
Pima-Santa Cruz-
229 PM MST Sun Jun 23 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM MST
FOR EAST CENTRAL PIMA AND NORTH CENTRAL SANTA CRUZ COUNTIES...

At 228 PM MST, a severe thunderstorm was located 8 miles northwest of
Sonoita, or 16 miles southeast of Sahuarita, moving north at 10 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Sonoita.

This includes Route 83 between mile markers 35 and 52.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3171 11060 3165 11084 3187 11092 3193 11062
TIME...MOT...LOC 2128Z 162DEG 9KT 3179 11074 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KM

746 
WWUS55 KTWC 232145
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
245 PM MST Sun Jun 23 2024

AZC023-232154-
/O.CAN.KTWC.SV.W.0009.000000T0000Z-240623T2200Z/
Santa Cruz-
245 PM MST Sun Jun 23 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SANTA CRUZ
COUNTY IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled. A severe 
thunderstorm warning remains in effect in southern Santa Cruz 
county. 

&&

LAT...LON 3174 11060 3174 11084 3187 11090 3193 11062
TIME...MOT...LOC 2144Z 181DEG 13KT 3179 11072 

$$

AZC019-232200-
/O.CON.KTWC.SV.W.0009.000000T0000Z-240623T2200Z/
Pima-
245 PM MST Sun Jun 23 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM MST
FOR EAST CENTRAL PIMA COUNTY...

At 244 PM MST, a severe thunderstorm was located 8 miles northwest of
Sonoita, or 17 miles southeast of Sahuarita, moving north at 15 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly remote areas of east
central Pima County.

This includes Route 83 between mile markers 38 and 52.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3174 11060 3174 11084 3187 11090 3193 11062
TIME...MOT...LOC 2144Z 181DEG 13KT 3179 11072 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KM

749 
WWUS55 KTWC 232153
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
253 PM MST Sun Jun 23 2024

AZC019-232203-
/O.EXP.KTWC.SV.W.0009.000000T0000Z-240623T2200Z/
Pima-
253 PM MST Sun Jun 23 2024

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIMA COUNTY WILL
EXPIRE AT 300 PM MST...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 3174 11060 3174 11084 3187 11090 3193 11062
TIME...MOT...LOC 2153Z 162DEG 9KT 3181 11073 

$$

KM

Area Forecast Discussion
National Weather Service Tucson AZ
123 PM MST Sun Jun 23 2024

.SYNOPSIS...

Ample moisture will bring daily chances for thunderstorms to the
area through next week. Locally heavy rain will be likely with any
thunderstorm that develops, along with an isolated chance for
strong wind gusts. This will also knock several degrees off of
the heat. Temperatures may climb up a bit middle of next week as
high pressure builds overhead.

&&

.DISCUSSION...

The anomalously rich moisture plume remains in place across
southern Arizona, currently centered across the southwest with a
gradient over southeastern Arizona. GOES precipitable water
indicates values from around 1-1.25 inches near the New Mexico
border to 1.5-1.7 inches from Tucson-Nogales westward. Combined
with widespread surface dew points in the 60s this afternoon, the
moisture in place should remain sufficient to produce heavy
rainfalls for any convection that develops, especially in areas
with greater instability. This instability window should be
centered along an axis from the Santa Cruz County area and
through central to eastern Pima, as well as part of Cochise
county and potentially southern Graham county. This corridor is
where the overlap of precipitable water values to the west and
easterly mid- level lapse rates (associated with drier air moving
in from New Mexico) lies. Instability should remain more limited
for now in Pinal County as ongoing cloud cover there has kept
temperatures relatively cooler. Thunderstorms are expected to
develop this afternoon, with the strongest potential lying in the
corridor of best instability where SBCAPE could exceed 2000 J/kg.
Heaviest rainfall rates are most likely in this corridor as well,
given the moisture in place (as well as isolated severe wind
gusts). As convection forms closer to the International Border
early this afternoon, outflows should push activity towards the
Tucson area as the day goes on. Uncertainty with coverage
precluded a watch for flooding today, but messaging the heavy
rainfall rate potential is needed as an isolated threat for flash
flooding remains.

GOES water vapor imagery paints the picture for the coming days as
a stream of deep moisture amid easterly flow remains oriented
across the southern Gulf of Mexico through northern to central
Mexico, with a tropical disturbance moving over into Mexico today.
Between the push of Gulf moisture and the aid of the tropical
disturbance, the anomalously rich southeastern Arizona moisture
should nudge up a notch tomorrow. 12Z HREF ensemble max QPF shows
the spatial expansion of potential heavy rain across southeastern
Arizona Monday afternoon through the overnight hours. If this
trend holds through the upcoming model runs, messaging for Monday
may need to be ramped up. Daily convection chances remain in the
forecast through the remainder of the week as a mostly persistent
pattern aloft keeps moisture in place. A subtle westward nudge of
the upper level high may bring mid-level moisture down a touch by
the middle of next week, but with ample surface heating expected
every afternoon and evening should have at least some sort of
convective potential.

&&

.AVIATION...Valid through 25/00Z.

Scattered TSRA near KOLS from 24/20Z to 25/01Z, developing near
KTUS after 24/22Z. Isolated -SHRA or -TSRA possible elsewhere
through 25/03Z. Locally heavy rainfalls with any thunderstorms may
significantly reduce visibilities. Overall winds generally remain
under 12 kts with occasional gusts to 18Z in the afternoon, while
strong gusty outflow winds are possible under any thunderstorms. Aviation
discussion not updated for TAF amendments.

&&

.FIRE WEATHER...

Unseasonably rich moisture will keep relative humidity values
generally on the higher side through this week, along with daily
chances for thunderstorms. Moisture is expected to be deep enough for
some storms to generate locally heavy rain.

Temperatures may heat back up by mid week as high pressure builds
nearly overhead, however we should keep some storm chances around.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...
None.
&&

Public...Edwards
Aviation...Edwards
Fire Weather....Edwards

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