Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Tucson, AZ

July 2, 2021Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 2, 2021, 7:13 PM MST for Pima County, Arizona. It was in force for 47 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 2, 2021, 7:13 PM MST (02:13 UTC)
Expired
Jul 2, 2021, 8:00 PM MST
In force
47 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Pima County, AZ

The radar

The Phoenix radar (KIWA), 117 km from the middle of the area, began a volume at 02:15 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

Phoenix, AZ (KPSR), launched 00:00Z, 2.2 hours before the alert went out and 117 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-pSkew-T log-p diagram, Phoenix, AZ at 00:00Z on 2021-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 347 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 00:00Z on 2021-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
347 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
2932 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

386 
WUUS55 KTWC 030213
SVRTWC
AZC019-030300-
/O.NEW.KTWC.SV.W.0016.210703T0213Z-210703T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
713 PM MST Fri Jul 2 2021

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  North central Pima County in southeastern Arizona...

* Until 800 PM MST.

* At 712 PM MST, a severe thunderstorm was located near Kaka, or 33
  miles east of Ajo, moving west at 25 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...
  Hickiwan, Ventana and Vaya Chin. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3251 11244 3251 11223 3239 11216 3226 11253
      3245 11261
TIME...MOT...LOC 0212Z 068DEG 20KT 3246 11231 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
636 
WWUS55 KTWC 030241
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
741 PM MST Fri Jul 2 2021

AZC019-030300-
/O.CON.KTWC.SV.W.0016.000000T0000Z-210703T0300Z/
Pima-
741 PM MST Fri Jul 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MST
FOR NORTH CENTRAL PIMA COUNTY...

At 741 PM MST, a severe thunderstorm was located near Kaka, or 28
miles east of Ajo, moving southwest 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...
Hickiwan, Ventana and Vaya Chin. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3251 11244 3251 11223 3239 11216 3226 11253
      3245 11261
TIME...MOT...LOC 0241Z 060DEG 8KT 3243 11239 

HAIL...1.00IN
WIND...60MPH
 
$$
804 
WWUS55 KTWC 030257
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
757 PM MST Fri Jul 2 2021

AZC019-030306-
/O.EXP.KTWC.SV.W.0016.000000T0000Z-210703T0300Z/
Pima-
757 PM MST Fri Jul 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL PIMA COUNTY WILL
EXPIRE AT 800 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 brief heavy rain are still possible with this thunderstorm.
.

LAT...LON 3251 11244 3251 11223 3239 11216 3226 11253
      3245 11261
TIME...MOT...LOC 0256Z 068DEG 20KT 3242 11243 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 5:17 PM MSTSpecial Weather StatementTWCPinal43 min
Jul 2, 5:31 PM MSTSpecial Weather StatementTWC44 min
Jul 2, 5:35 PM MSTSevere Thunderstorm WarningTWCCochise, Pima40 min
Jul 2, 6:14 PM MSTSpecial Weather StatementTWC46 min
Jul 2, 6:16 PM MSTSpecial Weather StatementTWCPima29 min
Jul 2, 6:16 PM MSTSevere Thunderstorm WarningTWCCochise, Pima44 min
Jul 2, 7:34 PM MSTAreal Flood AdvisoryTWCPima, Pinal116 min
Jul 3, 11:17 AM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz3 hr
Jul 3, 11:21 AM MSTSevere Thunderstorm WarningTWCSanta Cruz39 min
Jul 3, 11:51 AM MSTSpecial Weather StatementTWCPima54 min
Jul 3, 11:58 AM MSTFlash Flood Warning Considerable damage threatTWCCochise, Santa Cruz3 hr
Jul 3, 12:09 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz111 min
Jul 3, 12:17 PM MSTFlash Flood Warning Considerable damage threatTWCPima, Santa Cruz3 hr
Jul 3, 12:23 PM MSTSevere Thunderstorm WarningTWCCochise, Santa Cruz35 min
Jul 3, 12:28 PM MSTFlash Flood Warning Considerable damage threatTWCCochise, Pima, Santa Cruz3 hr
Jul 3, 1:07 PM MSTFlash Flood Warning Considerable damage threatTWCPima3 hr
Jul 3, 1:15 PM MSTSpecial Weather StatementTWCPima45 min
Jul 3, 1:20 PM MSTSpecial Weather StatementTWCPima40 min
Jul 3, 1:50 PM MSTSevere Thunderstorm WarningTWCCochise, Pima40 min
Jul 3, 2:14 PM MSTSpecial Weather StatementTWC31 min
Jul 3, 2:56 PM MSTSpecial Weather StatementTWCPima34 min
Jul 3, 3:31 PM MSTSpecial Weather StatementTWCPinal44 min
Jul 3, 3:44 PM MSTAreal Flood AdvisoryTWCPima2 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2021Every 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.