Alert archive / Arizona / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 113, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 27, 2011, 3:15 PM MST for Pima County, Pinal 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
- Aug 27, 2011, 3:15 PM MST (22:15 UTC)
- Expired
- Aug 27, 2011, 4:00 PM MST
- In force
- 45 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Pima County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 89 km from the middle of the area, began a volume at 22:16 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, 10.3 hours before the alert went out and 58 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
- 296 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 2675 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
329 WUUS55 KTWC 272215 SVRTWC AZC019-021-272300- /O.NEW.KTWC.SV.W.0113.110827T2215Z-110827T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 315 PM MST SAT AUG 27 2011 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... SOUTH CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 400 PM MST * AT 307 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 11 MILES EAST OF AVRA VALLEY... OR NEAR MARANA...AND MOVING WEST AT 10 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RED ROCK AND PICACHO PEAK AND INTERSTATE 10. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ENCOUNTER STRONG WINDS...BLOWING DUST AND POOR VISIBILITIES WHILE DRIVING...PULL OFF THE ROAD IF POSSIBLE...PUT THE VEHICLE IN PARK...TAKE YOUR FOOT OFF THE BRAKE AND WAIT UNTIL THE VISIBILITY IMPROVES. PROTECT YOUR HEAD FROM POSSIBLE FLYING DEBRIS. && LAT...LON 3241 11153 3282 11144 3264 11105 3243 11110 TIME...MOT...LOC 2215Z 087DEG 9KT 3249 11117 $$
2 follow-up statements
571 WWUS55 KTWC 272224 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 324 PM MST SAT AUG 27 2011 AZC019-021-272300- /O.CON.KTWC.SV.W.0113.000000T0000Z-110827T2300Z/ PIMA AZ-PINAL AZ- 324 PM MST SAT AUG 27 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR SOUTH CENTRAL PINAL AND NORTH CENTRAL PIMA COUNTIES... AT 311 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATED A COUPLE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THE SOUTHERN MOST STORM WAS LOCATED 10 MILES EAST OF AVRA VALLEY...OR NEAR MARANA...MOVING WEST AT 10 MPH. THIS STORM HAD A HISTORY OF PRODUCING DAMAGING WINDS AROUND THE DOVE MOUNTAIN AREA. THE OTHER SEVERE THUNDERSTORM WAS LOCATED EAST TO SOUTHEAST OF PICACHO PEAK...MOVING WEST AT 10 MPH. BOTH STORMS WILL LIKELY PRODUCE AREAS OF BLOWING DUST THAT WILL IMPACT MOTORISTS ON INTERSTATE 10 BETWEEN MARANA AND ELOY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ENCOUNTER STRONG WINDS...BLOWING DUST AND POOR VISIBILITIES WHILE DRIVING...PULL OFF THE ROAD IF POSSIBLE...PUT THE VEHICLE IN PARK...TAKE YOUR FOOT OFF THE BRAKE AND WAIT UNTIL THE VISIBILITY IMPROVES. PROTECT YOUR HEAD FROM POSSIBLE FLYING DEBRIS. && LAT...LON 3241 11153 3282 11144 3264 11105 3243 11110 TIME...MOT...LOC 2220Z 087DEG 9KT 3249 11118 $$
585 WWUS55 KTWC 272254 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 354 PM MST SAT AUG 27 2011 AZC019-021-272302- /O.EXP.KTWC.SV.W.0113.000000T0000Z-110827T2300Z/ PIMA AZ-PINAL AZ- 354 PM MST SAT AUG 27 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PINAL AND NORTH CENTRAL PIMA COUNTIES WILL EXPIRE AT 400 PM MST... THE STORMS THAT PROMPTED THE WARNING HAD DIMINISHED SIGNIFICANTLY IN INTENSITY. THUS...THE THREAT OF WINDS IN EXCESS OF 60 MPH HAD ENDED. THE WARNING WILL EXPIRE AT 400 PM MST. LAT...LON 3241 11153 3282 11144 3264 11105 3243 11110 TIME...MOT...LOC 2252Z 087DEG 9KT 3249 11127 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 5:13 PM MST | Special Weather Statement | TWC | Pinal | 62 min |
| Aug 26, 6:49 PM MST | Special Weather Statement | TWC | Santa Cruz | 41 min |
| Aug 26, 7:31 PM MST | Special Weather Statement | TWC | Santa Cruz | 44 min |
| Aug 27, 3:40 PM MST | Severe Thunderstorm Warning | TWC | Pima | 35 min |
| Aug 27, 3:51 PM MST | Severe Thunderstorm Warning | TWC | Pima | 39 min |
| Aug 27, 3:57 PM MST | Severe Thunderstorm Warning | TWC | Pima | 33 min |
| Aug 27, 4:20 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Aug 27, 4:22 PM MST | Severe Thunderstorm Warning | TWC | Pima | 38 min |
| Aug 27, 4:30 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
| Aug 27, 4:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 29 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2011Every severe thunderstorm warning in 2011
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.