Alert archive / Arizona / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 3, NWS Tucson, AZ

June 29, 2011Graham County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 29, 2011, 5:00 PM MST for Graham County, Arizona. It was in force for 45 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, 5:00 PM MST (00:00 UTC)
Expired: Jun 29, 2011, 5:45 PM MST
In force: 45 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

County Graham County, AZ

The radar

The Tucson radar (KEMX), 137 km from the middle of the area, began a volume at 00:04 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, 0.0 hours before the alert went out and 136 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 4568 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -7 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.

228 
WUUS55 KTWC 300000
SVRTWC
AZC009-300045-
/O.NEW.KTWC.SV.W.0003.110630T0000Z-110630T0045Z/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL GRAHAM COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF SAFFORD...

* UNTIL 545 PM MST

* AT 454 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 SAFFORD...AND MOVING NORTH
  AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PIMA.

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 3301 10978 3287 10939 3256 10948 3260 10968
      3284 10990
TIME...MOT...LOC 0000Z 184DEG 6KT 3284 10961

$$

CS

2 follow-up statements

608 
WWUS55 KTWC 300022
SVSTWC

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

AZC009-300045-
/O.CON.KTWC.SV.W.0003.000000T0000Z-110630T0045Z/
GRAHAM AZ-
522 PM MST WED JUN 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MST
FOR CENTRAL GRAHAM COUNTY...

AT 518 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 7 MILES NORTHEAST OF
SOLOMON...OR 10 MILES EAST OF SAFFORD...MOVING NORTHEAST AT 15 MPH.

LAT...LON 3301 10978 3287 10939 3256 10948 3260 10968
      3284 10990
TIME...MOT...LOC 0023Z 233DEG 12KT 3289 10952

$$

CS

468 
WWUS55 KTWC 300041
SVSTWC

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

AZC009-300051-
/O.EXP.KTWC.SV.W.0003.000000T0000Z-110630T0045Z/
GRAHAM AZ-
541 PM MST WED JUN 29 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GRAHAM COUNTY WILL
EXPIRE AT 545 PM MST...

LAT...LON 3301 10978 3287 10939 3256 10948 3260 10968
      3284 10990
TIME...MOT...LOC 0041Z 233DEG 12KT 3293 10946

$$

CS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:16 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jun 29, 5:40 PM MST	Severe Thunderstorm Warning	TWC	Cochise	50 min
Jun 29, 6:28 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jun 29, 6:58 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jun 29, 11:34 PM MST	Areal Flood Advisory	TWC	Cochise	86 min
Jun 30, 2:52 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	38 min
Jun 30, 3:00 PM MST	Heat Advisory	TWC	Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz	28 hr
Jun 30, 3:00 PM MST	Heat Advisory	TWC	Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz	52 hr
Jun 30, 3:23 PM MST	Special Weather Statement	TWC	Santa Cruz	22 min
Jun 30, 3:30 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	29 min
Jun 30, 3:37 PM MST	Areal Flood Advisory	TWC	Cochise, Santa Cruz	84 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2011 Every 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.