Alert archive / Arizona / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 2, NWS Tucson, AZ

June 29, 2011Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 29, 2011, 3:51 PM MST for Pinal County, Arizona. It was in force for 24 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
Jun 29, 2011, 3:51 PM MST (22:51 UTC)
Expired
Jun 29, 2011, 4:15 PM MST
In force
24 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 96 km from the middle of the area, began a volume at 22:52 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, 10.9 hours before the alert went out and 102 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 2011-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2011-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
28 J/kg
Mixed-layer CIN
-581 J/kg
Mixed-layer LCL
2777 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
136 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.

831 
WUUS55 KTWC 292251
SVRTWC
AZC021-292315-
/O.NEW.KTWC.SV.W.0002.110629T2251Z-110629T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
351 PM MST WED JUN 29 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 415 PM MST

* AT 342 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 JUST NORTH OF DUDLEYVILLE OVER
  EAST CENTRAL PINAL COUNTY...OR 25 MILES SOUTH OF GLOBE...AND
  MOVING NORTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS
OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR
THUNDER...LIGHTNING IS CLOSE ENOUGH TO STRIKE YOU.

&&

LAT...LON 3318 11046 3293 11061 3299 11077 3301 11077
      3299 11079 3300 11081 3302 11080 3301 11076
      3304 11072 3307 11073 3315 11063 3314 11059
      3319 11051
TIME...MOT...LOC 2249Z 202DEG 10KT 3305 11067

$$

MEYER
2 follow-up statements
255 
WWUS55 KTWC 292303
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
403 PM MST WED JUN 29 2011

AZC021-292315-
/O.CON.KTWC.SV.W.0002.000000T0000Z-110629T2315Z/
PINAL AZ-
403 PM MST WED JUN 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MST
FOR EAST CENTRAL PINAL COUNTY...

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 OVER MAINLY RURAL AREAS OF 
EAST CENTRAL PINAL COUNTY...OR 23 MILES SOUTH OF GLOBE...MOVING 
NORTHEAST AT 10 MPH.

LAT...LON 3318 11046 3293 11061 3299 11077 3301 11077
      3299 11079 3300 11081 3302 11080 3301 11076
      3304 11072 3307 11073 3315 11063 3314 11059
      3319 11051
TIME...MOT...LOC 2302Z 202DEG 10KT 3309 11064

$$

MEYER
351 
WWUS55 KTWC 292314
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
414 PM MST WED JUN 29 2011

AZC021-292323-
/O.EXP.KTWC.SV.W.0002.000000T0000Z-110629T2315Z/
PINAL AZ-
414 PM MST WED JUN 29 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PINAL COUNTY WILL
EXPIRE AT 415 PM MST...

AT 412 PM MST THE STORM NORTH OF DUDLEYVILLE HAD DIMINISHED IN 
INTENSITY TO BELOW SEVERE LEVELS. THE WARNING WILL BE ALLOWED TO 
EXPIRE AT 415 PM MST.  ANOTHER STORM WAS NOTED INCREASING IN 
STRENGTH EAST OF DUDLEYVILLE OVER ARAVAIPA CREEK.

LAT...LON 3318 11046 3293 11061 3299 11077 3301 11077
      3299 11079 3300 11081 3302 11080 3301 11076
      3304 11072 3307 11073 3315 11063 3314 11059
      3319 11051
TIME...MOT...LOC 2313Z 202DEG 10KT 3312 11063

$$

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 4:49 PM MSTFlash Flood WarningTWCGreenlee86 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2011Every severe thunderstorm warning in 2011

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.