Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 73, NWS Tucson, AZ

August 14, 2012Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 14, 2012, 3:26 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 64 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
Aug 14, 2012, 3:26 PM MST (22:26 UTC)
Expired
Aug 14, 2012, 4:30 PM MST
In force
64 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 76 km from the middle of the area, began a volume at 22:28 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 (KDMA), launched 12:00Z, 10.4 hours before the alert went out and 76 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, Tuscon, AZ at 12:00Z on 2012-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, Tuscon, AZ at 12:00Z on 2012-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
31 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
3146 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

558 
WUUS55 KTWC 142226
SVRTWC
AZC019-023-142330-
/O.NEW.KTWC.SV.W.0073.120814T2226Z-120814T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
326 PM MST TUE AUG 14 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  WEST CENTRAL SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 430 PM MST

* AT 319 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR JUNCTION OF HIGHWAY 286 AND
  ARIVACA ROAD...OR 27 MILES SOUTHEAST OF SELLS...AND MOVING SOUTH AT
  10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ARIVACA...ARIVACA LAKE...SASABE...RUBY AND NEWFIELDS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH...
LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM.

&&

LAT...LON 3153 11116 3140 11128 3155 11177 3189 11164
      3179 11117
TIME...MOT...LOC 2227Z 011DEG 9KT 3170 11148

$$

GL
2 follow-up statements
124 
WWUS55 KTWC 142258
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
358 PM MST TUE AUG 14 2012

AZC019-023-142330-
/O.CON.KTWC.SV.W.0073.000000T0000Z-120814T2330Z/
SANTA CRUZ AZ-PIMA AZ-
358 PM MST TUE AUG 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MST
FOR SOUTH CENTRAL PIMA AND WEST CENTRAL SANTA CRUZ COUNTIES...

AT 354 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR JUNCTION OF HIGHWAY
286 AND ARIVACA ROAD...OR 30 MILES SOUTHEAST OF SELLS...MOVING SOUTH
AT 10 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH...
LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM.

&&

LAT...LON 3153 11116 3140 11128 3155 11177 3189 11164
      3179 11117
TIME...MOT...LOC 2257Z 011DEG 9KT 3163 11150

$$

MOLLERE
160 
WWUS55 KTWC 142326
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
426 PM MST TUE AUG 14 2012

AZC019-023-142336-
/O.EXP.KTWC.SV.W.0073.000000T0000Z-120814T2330Z/
SANTA CRUZ AZ-PIMA AZ-
426 PM MST TUE AUG 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PIMA AND WEST
CENTRAL SANTA CRUZ COUNTIES WILL EXPIRE AT 430 PM MST...

LAT...LON 3153 11116 3140 11128 3155 11177 3189 11164
      3179 11117
TIME...MOT...LOC 2326Z 011DEG 9KT 3156 11152

$$

MOLLERE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 5:47 PM MSTSevere Thunderstorm WarningTWCPima28 min
Aug 13, 5:50 PM MSTSevere Thunderstorm WarningTWCPima40 min
Aug 13, 6:29 PM MSTSevere Thunderstorm WarningTWCPima46 min
Aug 14, 1:35 PM MSTSpecial Weather StatementTWCSanta Cruz25 min
Aug 14, 2:13 PM MSTSevere Thunderstorm WarningTWCPima32 min
Aug 14, 2:32 PM MSTSevere Thunderstorm WarningTWCCochise43 min
Aug 14, 2:45 PM MSTSevere Thunderstorm WarningTWCPima45 min
Aug 14, 2:59 PM MSTSevere Thunderstorm WarningTWCSanta Cruz46 min
Aug 14, 3:14 PM MSTSpecial Weather StatementTWCCochise46 min
Aug 14, 3:32 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz88 min
Aug 14, 3:45 PM MSTSpecial Weather StatementTWCSanta Cruz45 min
Aug 14, 4:06 PM MSTSpecial Weather StatementTWCCochise39 min
Aug 14, 4:10 PM MSTSevere Thunderstorm WarningTWCCochise, Santa Cruz50 min
Aug 14, 4:45 PM MSTSpecial Weather StatementTWCSanta Cruz45 min
Aug 14, 4:51 PM MSTSevere Thunderstorm WarningTWCPima39 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2012Every severe thunderstorm warning in 2012

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.