Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 89, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 21, 2012, 3:28 PM MST for Cochise County, Pima 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 21, 2012, 3:28 PM MST (22:28 UTC)
- Expired
- Aug 21, 2012, 4:15 PM MST
- In force
- 47 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Cochise County, AZ, Pima County, AZ
The radar
The Tucson radar (KEMX), 17 km from the middle of the area, began a volume at 22:28 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 12:00Z, 10.5 hours before the alert went out and 33 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
- 1386 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
757 WUUS55 KTWC 212228 SVRTWC AZC003-019-212315- /O.NEW.KTWC.SV.W.0089.120821T2228Z-120821T2315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 328 PM MST TUE AUG 21 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... WEST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA... * UNTIL 415 PM MST * AT 325 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED NEAR AND SOUTH OF INTERSTATE 10 BETWEEN VAIL AND BENSON...MOVING NORTH AT 15 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VAIL AND RITA RANCH. 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 3219 11083 3211 11019 3181 11037 3190 11071 TIME...MOT...LOC 2227Z 169DEG 12KT 3200 11054 $$ MEYER
2 follow-up statements
573 WWUS55 KTWC 212248 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 348 PM MST TUE AUG 21 2012 AZC003-019-212315- /O.CON.KTWC.SV.W.0089.000000T0000Z-120821T2315Z/ COCHISE AZ-PIMA AZ- 348 PM MST TUE AUG 21 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MST FOR EAST CENTRAL PIMA AND WEST CENTRAL COCHISE COUNTIES... AT 345 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE AN AREA OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE OVER INTERSTATE 10 FROM VAIL TO JUST WEST OF BENSON...MOVING NORTH AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3219 11083 3211 11019 3181 11037 3190 11071 TIME...MOT...LOC 2247Z 164DEG 13KT 3204 11061 $$ MEYER
744 WWUS55 KTWC 212314 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 414 PM MST TUE AUG 21 2012 AZC003-019-212323- /O.EXP.KTWC.SV.W.0089.000000T0000Z-120821T2315Z/ COCHISE AZ-PIMA AZ- 414 PM MST TUE AUG 21 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIMA AND WEST CENTRAL COCHISE COUNTIES WILL EXPIRE AT 415 PM MST... AT 413 PM MST A SEVERE THUNDERSTORM REMAINED NEAR SOUTH AND SOUTHWEST TUCSON...HOWEVER THE STORMS NEAR AND NORTH OF INTERSTATE 10 SOUTHEAST AND EAST OF TUCSON HAD DIMINISHED IN INTENSITY. LAT...LON 3219 11083 3211 11019 3181 11037 3190 11071 TIME...MOT...LOC 2313Z 164DEG 13KT 3213 11064 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 5:59 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 20, 6:10 PM MST | Areal Flood Advisory | TWC | Pima | 80 min |
| Aug 20, 7:26 PM MST | Areal Flood Advisory | TWC | Pima | 109 min |
| Aug 20, 7:40 PM MST | Special Weather Statement | TWC | Pima | 50 min |
| Aug 21, 12:17 PM MST | Severe Thunderstorm Warning | TWC | Graham | 28 min |
| Aug 21, 1:04 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 26 min |
| Aug 21, 2:10 PM MST | Special Weather Statement | TWC | Cochise | 50 min |
| Aug 21, 2:49 PM MST | Flash Flood Warning | TWC | Pima | 86 min |
| Aug 21, 3:12 PM MST | Special Weather Statement | TWC | 48 min | |
| Aug 21, 3:34 PM MST | Severe Thunderstorm Warning | TWC | Pima | 41 min |
| Aug 21, 3:53 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Aug 21, 4:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
| Aug 21, 4:34 PM MST | Areal Flood Advisory | TWC | Pima | 116 min |
| Aug 21, 4:42 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 2 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.