Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 84, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 19, 2012, 6:37 PM MST for Graham County, Pinal County, Arizona. It was in force for 23 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, 6:37 PM MST (01:37 UTC)
- Expired
- Aug 19, 2012, 7:00 PM MST
- In force
- 23 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Graham County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 107 km from the middle of the area, began a volume at 01:38 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, 1.6 hours before the alert went out and 86 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
273
WUUS55 KTWC 200137
SVRTWC
AZC009-021-200200-
/O.NEW.KTWC.SV.W.0084.120820T0137Z-120820T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
637 PM MST SUN AUG 19 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA...
EXTREME WEST CENTRAL GRAHAM COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 700 PM MST
* AT 631 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WAS LOCATED 14 MILES
NORTHEAST OF MAMMOTH...OR 36 MILES SOUTH OF GLOBE...AND MOVING
WEST...SOUTHWEST AT 10 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ARAVAIPA CREEK PRESERVE AND DUDLEYVILLE.
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 3297 11046 3283 11044 3271 11054 3271 11074
3290 11079 3299 11078 3302 11074 3304 11065
TIME...MOT...LOC 0136Z 063DEG 7KT 3289 11053
$$
MEADOWS2 follow-up statements
835
WWUS55 KTWC 200150
SVSTWC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
650 PM MST SUN AUG 19 2012
AZC009-021-200200-
/O.CON.KTWC.SV.W.0084.000000T0000Z-120820T0200Z/
GRAHAM AZ-PINAL AZ-
650 PM MST SUN AUG 19 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MST
FOR EAST CENTRAL PINAL AND EXTREME WEST CENTRAL GRAHAM COUNTIES...
AT 648 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED 8
MILES EAST OF ARAVAIPA CREEK PRESERVE...OR 37 MILES SOUTH OF
GLOBE...MOVING SOUTHWEST AT 10 MPH.
LAT...LON 3297 11046 3283 11044 3271 11054 3271 11074
3290 11079 3299 11078 3302 11074 3304 11065
TIME...MOT...LOC 0149Z 063DEG 7KT 3288 11056
$$718
WWUS55 KTWC 200157
SVSTWC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
657 PM MST SUN AUG 19 2012
AZC009-021-200207-
/O.EXP.KTWC.SV.W.0084.000000T0000Z-120820T0200Z/
GRAHAM AZ-PINAL AZ-
657 PM MST SUN AUG 19 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PINAL AND EXTREME
WEST CENTRAL GRAHAM COUNTIES WILL EXPIRE AT 700 PM MST...
LAT...LON 3297 11046 3283 11044 3271 11054 3271 11074
3290 11079 3299 11078 3302 11074 3304 11065
TIME...MOT...LOC 0157Z 063DEG 7KT 3287 11058
$$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, 5:13 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 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, 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, 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.