Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Tucson, AZ

August 15, 2012Cochise County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 15, 2012, 6:04 PM MST for Cochise County, Santa Cruz County, Arizona. It was in force for 41 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 15, 2012, 6:04 PM MST (01:04 UTC)
Expired
Aug 15, 2012, 6:45 PM MST
In force
41 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

Counties Cochise County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 33 km from the middle of the area, began a volume at 01:05 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, 1.1 hours before the alert went out and 70 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 2012-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2714 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
42 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.

739 
WUUS55 KTWC 160104
SVRTWC
AZC003-023-160145-
/O.NEW.KTWC.SV.W.0080.120816T0104Z-120816T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
604 PM MST WED AUG 15 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME WEST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...
  NORTHEASTERN SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 645 PM MST

* AT 600 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 7 MILES WEST OF HUACHUCA CITY...
  OR 10 MILES WEST OF SIERRA VISTA...AND MOVING WEST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CANELO...ELGIN AND SONOITA.

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 3151 11074 3173 11074 3173 11033 3151 11034
TIME...MOT...LOC 0104Z 103DEG 8KT 3160 11047

$$

MOLLERE
2 follow-up statements
619 
WWUS55 KTWC 160122
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
622 PM MST WED AUG 15 2012

AZC003-023-160145-
/O.CON.KTWC.SV.W.0080.000000T0000Z-120816T0145Z/
COCHISE AZ-SANTA CRUZ AZ-
622 PM MST WED AUG 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MST
FOR NORTHEASTERN SANTA CRUZ AND EXTREME WEST CENTRAL COCHISE
COUNTIES...

AT 618 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 ELGIN...OR 13 MILES
WEST OF SIERRA VISTA...MOVING WEST AT 10 MPH.

LAT...LON 3151 11074 3173 11074 3173 11033 3151 11034
TIME...MOT...LOC 0122Z 103DEG 8KT 3161 11052

$$

MOLLERE
945 
WWUS55 KTWC 160142
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
642 PM MST WED AUG 15 2012

AZC003-023-160151-
/O.EXP.KTWC.SV.W.0080.000000T0000Z-120816T0145Z/
COCHISE AZ-SANTA CRUZ AZ-
642 PM MST WED AUG 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SANTA CRUZ AND
EXTREME WEST CENTRAL COCHISE COUNTIES WILL EXPIRE AT 645 PM MST...

THE STORMS HAVE DECREASED IN INTENSITY...THEREFORE THE WARNING WILL 
BE ALLOWED TO EXPIRE.  

LAT...LON 3151 11074 3173 11074 3173 11033 3151 11034
TIME...MOT...LOC 0141Z 103DEG 8KT 3162 11057

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 5:02 PM MSTSpecial Weather StatementTWC43 min
Aug 15, 5:47 PM MSTSpecial Weather StatementTWCCochise43 min
Aug 15, 5:51 PM MSTSpecial Weather StatementTWCSanta Cruz54 min
Aug 15, 6:14 PM MSTAreal Flood AdvisoryTWCCochise63 min
Aug 15, 6:34 PM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz64 min
Aug 15, 7:06 PM MSTSpecial Weather StatementTWCSanta Cruz39 min
Aug 15, 7:25 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz61 min
Aug 15, 7:34 PM MSTSevere Thunderstorm WarningTWCSanta Cruz26 min
Aug 15, 7:36 PM MSTAreal Flood AdvisoryTWCSanta Cruz114 min
Aug 15, 8:01 PM MSTSpecial Weather StatementTWCSanta Cruz44 min
Aug 15, 8:05 PM MSTFlash Flood WarningTWCSanta Cruz3 hr
Aug 15, 8:32 PM MSTSpecial Weather StatementTWCPima43 min
Aug 15, 8:53 PM MSTAreal Flood AdvisoryTWCPima97 min
Aug 15, 9:37 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Aug 16, 12:59 PM MSTSpecial Weather StatementTWC31 min
Aug 16, 1:54 PM MSTAreal Flood AdvisoryTWCPima3 hr

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.