Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 28, NWS Tucson, AZ

July 10, 2021Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 10, 2021, 3:09 PM MST for Santa Cruz County, Arizona. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 10, 2021, 3:09 PM MST (22:09 UTC)
Expired: Jul 10, 2021, 4:00 PM MST
In force: 51 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 53 km from the middle of the area, began a volume at 22:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 10.2 hours before the alert went out and 84 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1505 J/kg
Mixed-layer CIN: -302 J/kg
Mixed-layer LCL: 1767 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

248 
WUUS55 KTWC 102209
SVRTWC
AZC023-102300-
/O.NEW.KTWC.SV.W.0028.210710T2209Z-210710T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
309 PM MST Sat Jul 10 2021

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  Southeastern Santa Cruz County in southeastern Arizona...

* Until 400 PM MST.

* At 309 PM MST, a severe thunderstorm was located 8 miles east of
  Nogales International Airport, or 13 miles east of Nogales, moving
  west at 5 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Nogales, Nogales International Airport, Patagonia Lake State Park,
  Kino Springs and Lochiel.

This includes Route 82 between mile markers 2 and 14.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3150 11085 3148 11056 3133 11055 3134 11093
TIME...MOT...LOC 2209Z 087DEG 6KT 3139 11072 

HAIL...0.75IN
WIND...60MPH
 
$$

GL

2 follow-up statements

793 
WWUS55 KTWC 102229
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
329 PM MST Sat Jul 10 2021

AZC023-102300-
/O.CON.KTWC.SV.W.0028.000000T0000Z-210710T2300Z/
Santa Cruz-
329 PM MST Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MST
FOR SOUTHEASTERN SANTA CRUZ COUNTY...

At 329 PM MST, a severe thunderstorm was located 9 miles west of
Parker Canyon Lake, or 20 miles east of Nogales, moving west at 10
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Nogales, Nogales International Airport, Patagonia Lake State Park,
Kino Springs and Lochiel.

This includes Route 82 between mile markers 2 and 14.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

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

&&

LAT...LON 3150 11085 3148 11056 3133 11055 3134 11093
TIME...MOT...LOC 2229Z 069DEG 8KT 3142 11061 

HAIL...1.25IN
WIND...60MPH
 
$$

GL

130 
WWUS55 KTWC 102258
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
358 PM MST Sat Jul 10 2021

AZC023-102308-
/O.EXP.KTWC.SV.W.0028.000000T0000Z-210710T2300Z/
Santa Cruz-
358 PM MST Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SANTA CRUZ COUNTY
WILL EXPIRE AT 400 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.  However gusty
winds and heavy rain are still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tucson.

LAT...LON 3150 11085 3148 11056 3133 11055 3134 11093
TIME...MOT...LOC 2258Z 087DEG 6KT 3142 11065 

$$

GL

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 5:11 PM MST	Special Weather Statement	TWC		49 min
Jul 9, 6:09 PM MST	Severe Thunderstorm Warning	TWC	Pinal	26 min
Jul 9, 7:54 PM MST	Special Weather Statement	TWC	Graham	36 min
Jul 9, 8:17 PM MST	Severe Thunderstorm Warning	TWC	Graham	43 min
Jul 9, 10:16 PM MST	Special Weather Statement	TWC	Pinal	29 min
Jul 9, 10:55 PM MST	Special Weather Statement	TWC	Pima	35 min
Jul 10, 1:55 PM MST	Blowing Dust Advisory	TWC	Pima, Pinal	9 hr
Jul 10, 3:18 PM MST	Special Weather Statement	TWC	Greenlee	42 min
Jul 10, 3:40 PM MST	Special Weather Statement	TWC		35 min
Jul 10, 3:43 PM MST	Severe Thunderstorm Warning	TWC	Cochise	19 min
Jul 10, 4:03 PM MST	Special Weather Statement	TWC	Graham	42 min
Jul 10, 4:27 PM MST	Severe Thunderstorm Warning	TWC	Cochise	48 min
Jul 10, 4:32 PM MST	Severe Thunderstorm Warning	TWC	Graham	43 min
Jul 10, 4:39 PM MST	Special Weather Statement	TWC	Santa Cruz	51 min
Jul 10, 4:45 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	45 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.