Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 78, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 14, 2012, 6:46 PM MST for Pima County, Arizona. It was in force for 44 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 14, 2012, 6:46 PM MST (01:46 UTC)
- Expired
- Aug 14, 2012, 7:30 PM MST
- In force
- 44 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 01:46 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, 1.8 hours before the alert went out and 101 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
- 193 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 3692 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
300 WUUS55 KTWC 150146 SVRTWC AZC019-150230- /O.NEW.KTWC.SV.W.0078.120815T0146Z-120815T0230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 646 PM MST TUE AUG 14 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 730 PM MST * AT 637 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 NEAR CHOULIC...OR 17 MILES SOUTH OF SELLS...AND MOVING SOUTH AT 15 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN MIGUEL AND NEWFIELDS. THIS UPGRADES THE PREVIOUSLY ISSUED SIGNIFICANT WEATHER ADVISORY FOR THIS AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 3154 11173 3163 11198 3186 11188 3180 11164 TIME...MOT...LOC 0145Z 018DEG 11KT 3166 11182 $$ SMR
2 follow-up statements
673 WWUS55 KTWC 150205 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 705 PM MST TUE AUG 14 2012 AZC019-150230- /O.CON.KTWC.SV.W.0078.000000T0000Z-120815T0230Z/ PIMA AZ- 705 PM MST TUE AUG 14 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MST FOR SOUTH CENTRAL PIMA COUNTY... AT 656 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SAN MIGUEL...OR 20 MILES SOUTH OF SELLS...MOVING SOUTH AT 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 3154 11173 3163 11198 3186 11188 3180 11164 TIME...MOT...LOC 0205Z 018DEG 11KT 3160 11184 $$ SMR
916 WWUS55 KTWC 150221 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 721 PM MST TUE AUG 14 2012 AZC019-150230- /O.EXP.KTWC.SV.W.0078.000000T0000Z-120815T0230Z/ PIMA AZ- 721 PM MST TUE AUG 14 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PIMA COUNTY WILL EXPIRE AT 730 PM MST... AT 715 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR HAD INDICATED THAT THE THUNDERSTORM OVER THE WARNED AREA HAD CONTINUED TO DIMINISH...ENDING THE THREAT OF DAMAGING WINDS AND LARGE HAIL. THUS...THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3154 11173 3163 11198 3186 11188 3180 11164 TIME...MOT...LOC 0220Z 018DEG 11KT 3156 11186 $$ SMR
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 5:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Aug 14, 5:21 PM MST | Areal Flood Advisory | TWC | Cochise | 84 min |
| Aug 14, 5:50 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Aug 14, 6:10 PM MST | Special Weather Statement | TWC | Santa Cruz | 65 min |
| Aug 14, 6:24 PM MST | Special Weather Statement | TWC | 51 min | |
| Aug 14, 6:39 PM MST | Special Weather Statement | TWC | Pima | 51 min |
| Aug 14, 6:41 PM MST | Areal Flood Advisory | TWC | Pima | 79 min |
| Aug 14, 8:02 PM MST | Areal Flood Advisory | TWC | Pima | 88 min |
| Aug 14, 9:32 PM MST | Special Weather Statement | TWC | Pinal | 58 min |
| Aug 15, 1:46 AM MST | Severe Thunderstorm Warning | TWC | Pima | 29 min |
| Aug 15, 2:06 PM MST | Areal Flood Advisory | TWC | Cochise | 84 min |
| Aug 15, 2:43 PM MST | Flash Flood Warning | TWC | Cochise | 92 min |
| Aug 15, 4:22 PM MST | Special Weather Statement | TWC | Graham | 53 min |
| Aug 15, 4:43 PM MST | Special Weather Statement | TWC | Cochise | 47 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.