Alert archive / Arizona / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 4, NWS Tucson, AZ

June 29, 2011Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 29, 2011, 5:40 PM MST for Cochise County, Arizona. It was in force for 50 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, 5:40 PM MST (00:40 UTC)
Expired: Jun 29, 2011, 6:30 PM MST
In force: 50 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 56 km from the middle of the area, began a volume at 00:41 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, 0.7 hours before the alert went out and 95 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.

669 
WUUS55 KTWC 300040
SVRTWC
AZC003-300130-
/O.NEW.KTWC.SV.W.0004.110630T0040Z-110630T0130Z/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF SIERRA VISTA...

* UNTIL 630 PM MST

* AT 536 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 8 MILES SOUTHEAST OF SIERRA   
  VISTA...AND MOVING NORTHEAST AT 5 TO 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  JUNCTION OF HIGHWAYS 80 AND 90 AND CHARLESTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3172 11024 3158 10993 3134 11014 3147 11037
TIME...MOT...LOC 0040Z 216DEG 5KT 3148 11019

$$

MEYER

1 follow-up statement

742 
WWUS55 KTWC 300059
SVSTWC

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

AZC003-300130-
/O.CON.KTWC.SV.W.0004.000000T0000Z-110630T0130Z/
COCHISE AZ-
559 PM MST WED JUN 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MST
FOR SOUTHWESTERN COCHISE COUNTY...

AT 554 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 HEREFORD...OR 7 MILES 
EAST AND SOUTHEAST OF SIERRA VISTA...MOVING NORTHEAST AT 5 TO 10 
MPH. ANOTHER STORM WAS INCREASING IN INTENSITY NEAR CHARLESTON 
WITHIN THE WARNING AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3172 11024 3158 10993 3134 11014 3147 11037
TIME...MOT...LOC 0058Z 216DEG 5KT 3152 11018

$$

MEYER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:00 PM MST	Severe Thunderstorm Warning	TWC	Graham	45 min
Jun 29, 5:16 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
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.