Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS Tucson, AZ

August 19, 2012Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 19, 2012, 5:13 PM MST for Cochise County, Arizona. It was in force for 47 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, 5:13 PM MST (00:13 UTC)
Expired: Aug 19, 2012, 6:00 PM MST
In force: 47 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 84 km from the middle of the area, began a volume at 00:13 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, 0.2 hours before the alert went out and 98 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: 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.

616 
WUUS55 KTWC 200013
SVRTWC
AZC003-200100-
/O.NEW.KTWC.SV.W.0082.120820T0013Z-120820T0100Z/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...
  THIS INCLUDES THE CITY OF WILLCOX...

* UNTIL 600 PM MST

* AT 506 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 6 MILES EAST OF WILLCOX...AND   
MOVING WEST AT 10 TO 15 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

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 3221 11002 3242 11006 3243 10978 3231 10962
      3213 10969
TIME...MOT...LOC 0013Z 108DEG 13KT 3225 10976

$$

MOLLERE

2 follow-up statements

645 
WWUS55 KTWC 200036
SVSTWC

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

AZC003-200100-
/O.CON.KTWC.SV.W.0082.000000T0000Z-120820T0100Z/
COCHISE AZ-
536 PM MST SUN AUG 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MST
FOR NORTH CENTRAL COCHISE COUNTY...

AT 530 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 WILLCOX...MOVING WEST 
AT 10 TO 15 MPH.

LAT...LON 3221 11002 3242 11006 3243 10978 3231 10962
      3213 10969
TIME...MOT...LOC 0036Z 108DEG 13KT 3228 10985

$$

MOLLERE

246 
WWUS55 KTWC 200100
SVSTWC

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

AZC003-200110-
/O.EXP.KTWC.SV.W.0082.000000T0000Z-120820T0100Z/
COCHISE AZ-
600 PM MST SUN AUG 19 2012

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

LAT...LON 3221 11002 3242 11006 3243 10978 3231 10962
      3213 10969
TIME...MOT...LOC 0036Z 108DEG 13KT 3228 10985

$$

MOLLERE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 5:05 PM MST	Areal Flood Advisory	TWC	Cochise	85 min
Aug 19, 5:11 PM MST	Special Weather Statement	TWC	Cochise	49 min
Aug 19, 5:31 PM MST	Severe Thunderstorm Warning	TWC	Cochise	59 min
Aug 19, 5:59 PM MST	Areal Flood Advisory	TWC	Cochise	91 min
Aug 19, 6:19 PM MST	Areal Flood Advisory	TWC	Graham, Pinal	86 min
Aug 19, 6:37 PM MST	Severe Thunderstorm Warning	TWC	Graham, Pinal	23 min
Aug 19, 7:01 PM MST	Special Weather Statement	TWC		44 min
Aug 19, 7:11 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	49 min
Aug 19, 7:19 PM MST	Flash Flood Warning	TWC	Pima, Pinal	86 min
Aug 19, 7:56 PM MST	Severe Thunderstorm Warning	TWC	Pima	49 min
Aug 19, 8:47 PM MST	Flash Flood Warning	TWC	Pima, Pinal	103 min
Aug 19, 8:58 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Aug 19, 9:25 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	2 hr
Aug 19, 10:56 PM MST	Flash Flood Warning	TWC	Pima	64 min
Aug 20, 4:45 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	79 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2012 Every 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.