Alert archive / Arizona / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 8, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 4, 2011, 11:58 AM MST for 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
- Jul 4, 2011, 11:58 AM MST (18:58 UTC)
- Expired
- Jul 4, 2011, 12:45 PM MST
- In force
- 47 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Yuma radar (KYUX), 173 km from the middle of the area, began a volume at 19:00 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
Phoenix, AZ (KPSR), launched 12:00Z, 7.0 hours before the alert went out and 171 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
- 847 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1262 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
297 WUUS55 KTWC 041858 SVRTWC AZC019-041945- /O.NEW.KTWC.SV.W.0008.110704T1858Z-110704T1945Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1158 AM MST MON JUL 4 2011 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 1245 PM MST * AT 1154 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED ON HIGHWAY 85 BETWEEN WHY AND ORGAN PIPE NATIONAL MONUMENT...AND MOVING NORTHWEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF WESTERN PIMA COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 70 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3201 11307 3233 11294 3216 11261 3197 11272 TIME...MOT...LOC 1856Z 113DEG 6KT 3210 11280 $$ MEYER
2 follow-up statements
716 WWUS55 KTWC 041915 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1215 PM MST MON JUL 4 2011 AZC019-041945- /O.CON.KTWC.SV.W.0008.000000T0000Z-110704T1945Z/ PIMA AZ- 1215 PM MST MON JUL 4 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM MST FOR WEST CENTRAL PIMA COUNTY... AT 1213 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED BETWEEN WHY AND ORGAN PIPE NATIONAL MONUMENT NEAR HIGHWAY 85...BUT THE STRONGEST PORTION OF THE STORM WAS BEGINNING TO SHIFT OFF THE HIGHWAY AND INTO THE WILDERNESS AREAS TO THE WEST. MOVEMENT CONTINUED TO THE NORTHWEST AT ABOUT 5 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM WITH LOCALIZED FLOODING POSSIBLE. && LAT...LON 3201 11307 3233 11294 3216 11261 3197 11272 TIME...MOT...LOC 1913Z 113DEG 6KT 3213 11282 $$ MEYER
850 WWUS55 KTWC 041941 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1241 PM MST MON JUL 4 2011 AZC019-041950- /O.EXP.KTWC.SV.W.0008.000000T0000Z-110704T1945Z/ PIMA AZ- 1241 PM MST MON JUL 4 2011 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL PIMA COUNTY WILL EXPIRE AT 1245 PM MST... AT 1240 PM MST THE STORM BETWEEN WHY AND ORGAN PIPE NATIONAL MONUMENT HAD WEAKENED AND MOVED WEST INTO MORE REMOTE LOCATIONS OF WESTERN PIMA COUNTY. OUTFLOW FROM THIS STORM COULD GENERATE GUSTY WINDS IN OTHER LOCATIONS OF WESTERN PIMA...AND ADDITIONAL STORM DEVELOPMENT IS EXPECTED THIS AFTERNOON. LAT...LON 3201 11307 3233 11294 3216 11261 3197 11272 TIME...MOT...LOC 1940Z 113DEG 6KT 3215 11287 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 10:27 PM MST | Areal Flood Advisory | TWC | Pima | 68 min |
| Jul 4, 5:53 AM MST | Areal Flood Advisory | TWC | Pima, Pinal | 112 min |
| Jul 4, 12:54 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 51 min |
| Jul 4, 1:17 PM MST | Flash Flood Warning | TWC | Santa Cruz | 58 min |
| Jul 4, 1:38 PM MST | Areal Flood Advisory | TWC | Cochise | 112 min |
| Jul 4, 2:46 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 44 min |
| Jul 4, 3:39 PM MST | Areal Flood Advisory | TWC | Pima | 55 min |
| Jul 4, 4:03 PM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Jul 4, 4:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 39 min |
| Jul 4, 4:31 PM MST | Flash Flood Warning | TWC | Pima | 89 min |
| Jul 4, 4:44 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 6 min |
| Jul 4, 4:48 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Jul 4, 4:50 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 70 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.