Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 35, NWS Tucson, AZ

July 24, 2012Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 24, 2012, 11:00 AM MST for Cochise 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
Jul 24, 2012, 11:00 AM MST (18:00 UTC)
Expired
Jul 24, 2012, 11:45 AM MST
In force
45 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 32 km from the middle of the area, began a volume at 18:00 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 12:00Z, 6.0 hours before the alert went out and 68 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 2012-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 89 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 2012-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
89 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1737 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
17 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.

081 
WUUS55 KTWC 241800
SVRTWC
AZC003-241845-
/O.NEW.KTWC.SV.W.0035.120724T1800Z-120724T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1100 AM MST TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 1145 AM MST

* AT 1054 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 11 MILES SOUTH OF BENSON NEAR
  KARTCHNER CAVERNS...WITH ANOTHER STORM NEAR FORT HUACHUCA JUST
  NORTH OF SIERRA VISTA...AND MOVING NORTHEAST AT 5 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3207 11029 3167 11004 3154 11044 3180 11044
TIME...MOT...LOC 1759Z 227DEG 7KT 3181 11033

$$

MEYER
3 follow-up statements
817 
WWUS55 KTWC 241816
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1116 AM MST TUE JUL 24 2012

AZC003-241845-
/O.CON.KTWC.SV.W.0035.000000T0000Z-120724T1845Z/
COCHISE AZ-
1116 AM MST TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM MST
FOR WEST CENTRAL COCHISE COUNTY...

AT 1115 AM 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 HIGHWAY 90 BETWEEN 
KARTCHNER CAVERNS STATE PARK AND BENSON...MOVING NORTHEAST AT 10 
MPH.

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 3207 11029 3167 11004 3154 11044 3180 11044
TIME...MOT...LOC 1815Z 223DEG 8KT 3189 11030

$$

MEYER
493 
WWUS55 KTWC 241832
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1132 AM MST TUE JUL 24 2012

AZC003-241845-
/O.CON.KTWC.SV.W.0035.000000T0000Z-120724T1845Z/
COCHISE AZ-
1132 AM MST TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM MST
FOR WEST CENTRAL COCHISE COUNTY...

AT 1130 AM MST...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR BENSON...OR 27 MILES NORTH OF SIERRA VISTA...MOVING NORTHEAST AT
10 MPH.

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 3207 11029 3167 11004 3154 11044 3180 11044
TIME...MOT...LOC 1832Z 223DEG 8KT 3196 11027

$$

MEYER
874 
WWUS55 KTWC 241846
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1146 AM MST TUE JUL 24 2012

AZC003-241855-
/O.EXP.KTWC.SV.W.0035.000000T0000Z-120724T1845Z/
COCHISE AZ-
1146 AM MST TUE JUL 24 2012

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

AT 1145 AM MST THE SEVERE THUNDERSTORM NEAR BENSON HAD DIMINISHED IN 
INTENSITY.

LAT...LON 3207 11029 3167 11004 3154 11044 3180 11044
TIME...MOT...LOC 1832Z 223DEG 8KT 3196 11027

$$

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 5:20 PM MSTSpecial Weather StatementTWC40 min
Jul 23, 5:35 PM MSTAreal Flood AdvisoryTWCPima85 min
Jul 23, 5:40 PM MSTAreal Flood AdvisoryTWCPinal80 min
Jul 23, 6:04 PM MSTSpecial Weather StatementTWC41 min
Jul 23, 6:24 PM MSTAreal Flood AdvisoryTWCPima, Pinal81 min
Jul 23, 8:03 PM MSTAreal Flood AdvisoryTWCCochise87 min
Jul 24, 10:57 AM MSTSpecial Weather StatementTWCCochise33 min
Jul 24, 11:09 AM MSTSpecial Weather StatementTWCCochise51 min
Jul 24, 11:44 AM MSTSevere Thunderstorm WarningTWCCochise46 min
Jul 24, 12:19 PM MSTSpecial Weather StatementTWC41 min
Jul 24, 12:45 PM MSTSpecial Weather StatementTWCCochise30 min
Jul 24, 1:06 PM MSTSevere Thunderstorm WarningTWCPima39 min
Jul 24, 2:10 PM MSTAreal Flood AdvisoryTWCPima110 min
Jul 24, 2:34 PM MSTSpecial Weather StatementTWC41 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.