Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 83, NWS Tucson, AZ

August 19, 2012Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 19, 2012, 5:31 PM MST for Cochise County, Arizona. It was in force for 59 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 19, 2012, 5:31 PM MST (00:31 UTC)
Expired
Aug 19, 2012, 6:30 PM MST
In force
59 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 00:31 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 00:00Z, 0.5 hours before the alert went out and 80 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 00:00Z on 2012-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 309 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 00:00Z on 2012-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
309 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
2678 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
16 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.

037 
WUUS55 KTWC 200031
SVRTWC
AZC003-200130-
/O.NEW.KTWC.SV.W.0083.120820T0031Z-120820T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
531 PM MST SUN AUG 19 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 630 PM MST

* AT 524 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 15 MILES EAST OF BENSON...OR 20
  MILES SOUTHWEST OF WILLCOX...AND MOVING WEST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I-10
  AND TEXAS CANYON...TOMBSTONE...WHETSTONE...MESCAL...KARTCHNER
  CAVERNS STATE PARK...FAIRBANK...ST. DAVID AND SAINT DAVID.

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 3165 11001 3169 11045 3217 11044 3220 11002
      3175 10992
TIME...MOT...LOC 0031Z 060DEG 10KT 3202 11008

$$

MOLLERE
2 follow-up statements
959 
WWUS55 KTWC 200110
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
610 PM MST SUN AUG 19 2012

AZC003-200130-
/O.CON.KTWC.SV.W.0083.000000T0000Z-120820T0130Z/
COCHISE AZ-
610 PM MST SUN AUG 19 2012

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

AT 606 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 6 MILES NORTHEAST OF ST.
DAVID...OR 28 MILES SOUTHWEST OF WILLCOX...MOVING WEST AT 10
MPH.

LAT...LON 3165 11001 3169 11045 3217 11044 3220 11002
      3175 10992
TIME...MOT...LOC 0110Z 060DEG 10KT 3197 11019

$$

MOLLERE
488 
WWUS55 KTWC 200126
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
626 PM MST SUN AUG 19 2012

AZC003-200135-
/O.EXP.KTWC.SV.W.0083.000000T0000Z-120820T0130Z/
COCHISE AZ-
626 PM MST SUN AUG 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL COCHISE COUNTY
WILL EXPIRE AT 630 PM MST...

THE STORMS HAVE DECREASED IN INTENSITY AND ARE NO LONGER SEVERE. 
THEREFORE...THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO 
EXPIRE AT 630 PM MST. 

LAT...LON 3165 11001 3169 11045 3217 11044 3220 11002
      3175 10992
TIME...MOT...LOC 0125Z 060DEG 10KT 3195 11023

$$

MOLLERE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 5:05 PM MSTAreal Flood AdvisoryTWCCochise85 min
Aug 19, 5:11 PM MSTSpecial Weather StatementTWCCochise49 min
Aug 19, 5:13 PM MSTSevere Thunderstorm WarningTWCCochise47 min
Aug 19, 5:59 PM MSTAreal Flood AdvisoryTWCCochise91 min
Aug 19, 6:19 PM MSTAreal Flood AdvisoryTWCGraham, Pinal86 min
Aug 19, 6:37 PM MSTSevere Thunderstorm WarningTWCGraham, Pinal23 min
Aug 19, 7:01 PM MSTSpecial Weather StatementTWC44 min
Aug 19, 7:11 PM MSTSevere Thunderstorm WarningTWCPima, Pinal49 min
Aug 19, 7:19 PM MSTFlash Flood WarningTWCPima, Pinal86 min
Aug 19, 7:56 PM MSTSevere Thunderstorm WarningTWCPima49 min
Aug 19, 8:47 PM MSTFlash Flood WarningTWCPima, Pinal103 min
Aug 19, 8:58 PM MSTFlash Flood WarningTWCPima2 hr
Aug 19, 9:25 PM MSTAreal Flood AdvisoryTWCPima, Pinal2 hr
Aug 19, 10:56 PM MSTFlash Flood WarningTWCPima64 min
Aug 20, 4:45 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz79 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.