Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 1, NWS Tucson, AZ

June 16, 2012Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 16, 2012, 2:38 PM MST for Pima County, Arizona. It was in force for 37 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
Jun 16, 2012, 2:38 PM MST (21:38 UTC)
Expired
Jun 16, 2012, 3:15 PM MST
In force
37 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon

County Pima County, AZ

The radar

The Tucson radar (KEMX), 53 km from the middle of the area, began a volume at 21:40 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, 9.6 hours before the alert went out and 14 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 2012-06-16Temperature 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 12:00Z on 2012-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
3381 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
150 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.

639 
WUUS55 KTWC 162138
SVRTWC
AZC019-162215-
/O.NEW.KTWC.SV.W.0001.120616T2138Z-120616T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
238 PM MST SAT JUN 16 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITIES OF...TUCSON...ORO VALLEY...MARANA...

* UNTIL 315 PM MST

* AT 230 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
  AREA OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH. THESE STORMS WERE LOCATED NEAR WEST TUCSON AND
  EXTENDED DOWN TO NEAR SAHUARITA AND INTERSTATE 19. MOVEMENT WAS
  TO THE NORTH AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CATALINA FOOTHILLS AND TUCSON INTERNATIONAL AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3246 11126 3249 11094 3187 11069 3186 11101
TIME...MOT...LOC 2135Z 167DEG 16KT 3222 11104

$$

MEYER
2 follow-up statements
293 
WWUS55 KTWC 162149
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
249 PM MST SAT JUN 16 2012

AZC019-162215-
/O.CON.KTWC.SV.W.0001.000000T0000Z-120616T2215Z/
PIMA AZ-
249 PM MST SAT JUN 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MST
FOR EAST CENTRAL PIMA COUNTY...

AT 245 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE AN AREA OF SEVERE THUNDERSTORMS EXTENDING FROM NEAR 
NORTHWEST AND WEST TUCSON SOUTHWARD TOWARD SAHUARITA. MOVEMENT WAS 
TO THE NORTH AT ABOUT 15 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3246 11126 3249 11094 3187 11069 3186 11101
TIME...MOT...LOC 2148Z 167DEG 16KT 3228 11106

$$

MEYER
184 
WWUS55 KTWC 162217
SVSTWC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
317 PM MST SAT JUN 16 2012

AZC019-162226-
/O.EXP.KTWC.SV.W.0001.000000T0000Z-120616T2215Z/
PIMA AZ-
317 PM MST SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIMA COUNTY HAS
EXPIRED...

AT 315 PM MST THE STRONGEST THUNDERSTORM ACTIVITY HAD SHIFTED TO THE 
WEST. THUNDERSTORM ACTIVITY WAS RAPIDLY WEAKENING IN THE TUCSON AREA.

LAT...LON 3246 11126 3249 11094 3187 11069 3186 11101
TIME...MOT...LOC 2149Z 167DEG 16KT 3228 11106

$$

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 1:15 PM MSTSpecial Weather StatementTWC45 min
Jun 16, 1:50 PM MSTSpecial Weather StatementTWCSanta Cruz25 min
Jun 16, 2:22 PM MSTSpecial Weather StatementTWC38 min
Jun 16, 3:21 PM MSTSevere Thunderstorm WarningTWCPima39 min
Jun 16, 3:38 PM MSTDust Storm WarningTWCPima, Pinal112 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.