Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 70, NWS Tucson, AZ

August 14, 2012Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 14, 2012, 2:32 PM MST for Cochise County, Arizona. It was in force for 43 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, 2:32 PM MST (21:32 UTC)
Expired
Aug 14, 2012, 3:15 PM MST
In force
43 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 121 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 158 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.

428 
WUUS55 KTWC 142132
SVRTWC
AZC003-142215-
/O.NEW.KTWC.SV.W.0070.120814T2132Z-120814T2215Z/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF DOUGLAS...

* UNTIL 315 PM MST

* AT 224 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 12 MILES NORTHEAST OF DOUGLAS...
  AND MOVING SOUTHWEST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BISBEE-DOUGLAS AIRPORT AND PIRTLEVILLE.

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 3134 10975 3164 10948 3161 10910 3134 10921
TIME...MOT...LOC 2132Z 043DEG 8KT 3143 10938

$$

KD
2 follow-up statements
824 
WWUS55 KTWC 142153
SVSTWC

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

AZC003-142215-
/O.CON.KTWC.SV.W.0070.000000T0000Z-120814T2215Z/
COCHISE AZ-
253 PM MST TUE AUG 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MST
FOR SOUTH CENTRAL COCHISE COUNTY...

AT 248 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 EAST OF
BISBEE-DOUGLAS AIRPORT...OR 11 MILES NORTH OF DOUGLAS...MOVING
SOUTHWEST AT 15 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH
ACCOMPANIED BY BLOWING DUST AND LIMITED VISIBILITIES.

&&

LAT...LON 3153 10929 3134 10921 3134 10975 3164 10948
TIME...MOT...LOC 2153Z 041DEG 14KT 3148 10951

$$

KD
291 
WWUS55 KTWC 142217
SVSTWC

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

AZC003-142225-
/O.EXP.KTWC.SV.W.0070.000000T0000Z-120814T2215Z/
COCHISE AZ-
317 PM MST TUE AUG 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL COCHISE COUNTY
HAS EXPIRED...

HOWEVER...THESE STORMS WILL CONTINUE TO MOVE WEST TOWARD HEREFORD 
AND SIERRA VISTA AND A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED 
UNTIL 400 PM MST. THESE STORMS STILL HAVE THE POTENTIAL TO PRODUCE 
WIND GUSTS OF AROUND 40 TO 50 MPH. 

LAT...LON 3153 10929 3134 10921 3134 10975 3164 10948
TIME...MOT...LOC 2153Z 041DEG 14KT 3148 10951

$$

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, 2:45 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, 3:26 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz64 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.