Alert archive / Arizona / Tornado Warnings in 2021

Tornado Warning 3, NWS Tucson, AZ

July 12, 2021Santa Cruz County, Arizona

NWS Tucson, AZ issued this tornado warning at Jul 12, 2021, 8:37 PM MST for Santa Cruz County, Arizona. It was in force for 23 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 12, 2021, 8:37 PM MST (03:37 UTC)
Expired: Jul 12, 2021, 9:00 PM MST
In force: 23 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 36 km from the middle of the area, began a volume at 03:40 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 00:00Z, 3.6 hours before the alert went out and 65 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: 1102 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 2775 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

998 
WFUS55 KTWC 130337
TORTWC
AZC023-130400-
/O.NEW.KTWC.TO.W.0003.210713T0337Z-210713T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tucson AZ
837 PM MST Mon Jul 12 2021

The National Weather Service in Tucson has issued a

* Tornado Warning for...
  Central Santa Cruz County in southeastern Arizona...

* Until 900 PM MST.

* At 836 PM MST, a severe thunderstorm capable of producing a tornado
  was located near Patagonia, or 18 miles east of Tubac, moving
  southwest at 5 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters reported funnel cloud.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Patagonia and Patagonia Lake State Park around 900 PM MST.

This includes Route 82 between mile markers 14 and 28.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3167 11075 3162 11066 3143 11074 3157 11096
TIME...MOT...LOC 0336Z 040DEG 6KT 3162 11074 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Carpenter

2 follow-up statements

966 
WWUS55 KTWC 130349
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
849 PM MST Mon Jul 12 2021

AZC023-130400-
/O.CON.KTWC.TO.W.0003.000000T0000Z-210713T0400Z/
Santa Cruz-
849 PM MST Mon Jul 12 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM MST FOR CENTRAL
SANTA CRUZ COUNTY...
        
At 849 PM MST, a severe thunderstorm capable of producing a tornado
was located near Patagonia, moving southwest at 5 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Patagonia around 905 PM MST.
  Patagonia Lake State Park around 915 PM MST.

This includes Route 82 between mile markers 14 and 24.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3164 11079 3158 11071 3143 11074 3157 11096
TIME...MOT...LOC 0349Z 040DEG 6KT 3160 11076 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Carpenter

998 
WWUS55 KTWC 130400
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
900 PM MST Mon Jul 12 2021

AZC023-130410-
/O.EXP.KTWC.TO.W.0003.000000T0000Z-210713T0400Z/
Santa Cruz-
900 PM MST Mon Jul 12 2021

...THE TORNADO WARNING FOR CENTRAL SANTA CRUZ COUNTY HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been allowed to expire.

LAT...LON 3164 11079 3158 11071 3143 11074 3157 11096
TIME...MOT...LOC 0400Z 040DEG 6KT 3159 11077 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 6:29 PM MST	Special Weather Statement	TWC	Graham	31 min
Jul 12, 6:39 PM MST	Special Weather Statement	TWC	Graham	36 min
Jul 12, 7:09 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	36 min
Jul 12, 7:28 PM MST	Severe Thunderstorm Warning	TWC	Graham, Pinal	47 min
Jul 12, 7:45 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	45 min
Jul 12, 7:49 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	41 min
Jul 12, 7:50 PM MST	Special Weather Statement	TWC		40 min
Jul 12, 8:05 PM MST	Areal Flood Advisory	TWC	Graham	3 hr
Jul 12, 8:22 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	38 min
Jul 12, 8:37 PM MST	Severe Thunderstorm Warning	TWC	Pinal	38 min
Jul 12, 8:51 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	39 min
Jul 12, 9:11 PM MST	Special Weather Statement	TWC		34 min
Jul 12, 9:14 PM MST	Special Weather Statement	TWC	Pinal	31 min
Jul 12, 9:22 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	38 min
Jul 12, 9:30 PM MST	Dust Storm Warning	TWC	Pima, Pinal	60 min
Jul 12, 9:32 PM MST	Special Weather Statement	TWC	Santa Cruz	43 min
Jul 12, 9:54 PM MST	Areal Flood Advisory	TWC	Cochise, Pima	3 hr
Jul 12, 9:58 PM MST	Special Weather Statement	TWC		47 min
Jul 12, 10:16 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	3 hr
Jul 12, 10:24 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 12, 10:33 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 12, 10:34 PM MST	Special Weather Statement	TWC	Santa Cruz	56 min
Jul 12, 11:17 PM MST	Special Weather Statement	TWC	Pima	28 min
Jul 13, 2:02 PM MST	Special Weather Statement	TWC	Cochise	43 min
Jul 13, 2:57 PM MST	Special Weather Statement	TWC	Santa Cruz	33 min
Jul 13, 3:02 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	43 min
Jul 13, 3:21 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	2 hr
Jul 13, 3:45 PM MST	Special Weather Statement	TWC	Santa Cruz	45 min
Jul 13, 4:15 PM MST	Special Weather Statement	TWC	Santa Cruz	45 min
Jul 13, 4:20 PM MST	Special Weather Statement	TWC		25 min
Jul 13, 4:38 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Jul 13, 4:44 PM MST	Special Weather Statement	TWC	Cochise	46 min
Jul 13, 4:45 PM MST	Special Weather Statement	TWC		30 min
Jul 13, 4:58 PM MST	Severe Thunderstorm Warning	TWC	Pinal	32 min

Nearby

Tornado Warnings in Arizona, 2021 Every tornado warning in 2021 Tornadoes 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.