Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 16, 2012, 7:54 PM MST for Pima County, Arizona. It was in force for 51 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 16, 2012, 7:54 PM MST (02:54 UTC)
- Expired
- Jul 16, 2012, 8:45 PM MST
- In force
- 51 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Tucson radar (KEMX), 38 km from the middle of the area, began a volume at 02:56 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 00:00Z, 2.9 hours before the alert went out and 13 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
- 646 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2318 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
991 WUUS55 KTWC 170254 SVRTWC AZC019-170345- /O.NEW.KTWC.SV.W.0021.120717T0254Z-120717T0345Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 754 PM MST MON JUL 16 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 845 PM MST * AT 748 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 TUCSON INTERNATIONAL AIRPORT...OR 9 MILES SOUTH OF TUCSON...AND MOVING NORTHEAST AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DAVIS-MONTHAN AIR FORCE BASE...RITA RANCH AND SAGUARO NATIONAL PARK EAST 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 3238 11064 3215 11055 3201 11098 3215 11106 TIME...MOT...LOC 0254Z 236DEG 16KT 3212 11087 $$ MOLLERE
2 follow-up statements
599 WWUS55 KTWC 170302 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 802 PM MST MON JUL 16 2012 AZC019-170345- /O.CON.KTWC.SV.W.0021.000000T0000Z-120717T0345Z/ PIMA AZ- 802 PM MST MON JUL 16 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM MST FOR EAST CENTRAL PIMA COUNTY... AT 754 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR TUCSON INTERNATIONAL AIRPORT...OR 9 MILES SOUTHEAST OF TUCSON...MOVING NORTHEAST AT 20 MPH. THE HEAVIEST RAIN AND POTENTIAL FOR DAMAGING WINDS WILL OCCUR WITHIN THE NEXT 10 MINUTES ALONG INTERSTATE 10 BETWEEN VALENCIA AND WILMOT. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3238 11064 3215 11055 3201 11098 3215 11106 TIME...MOT...LOC 0300Z 236DEG 16KT 3213 11084 $$ MOLLERE
028 WWUS55 KTWC 170348 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 848 PM MST MON JUL 16 2012 AZC019-170355- /O.EXP.KTWC.SV.W.0021.000000T0000Z-120717T0345Z/ PIMA AZ- 848 PM MST MON JUL 16 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIMA COUNTY HAS EXPIRED... THE STORM THAT DOWNED POWER POLES SOUTH OF INTERSTATE 10 NEAR WILMOT HAS DECREASED IN INTENSITY AND IS NO LONGER SEVERE. THEREFORE...THE SEVERE THUNDERSTORM WARNING WAS ALLOWED TO EXPIRE AT 845 PM MST. LAT...LON 3238 11064 3215 11055 3201 11098 3215 11106 TIME...MOT...LOC 0302Z 236DEG 16KT 3213 11083 $$ MOLLERE
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:07 PM MST | Areal Flood Advisory | TWC | Cochise | 83 min |
| Jul 16, 7:19 PM MST | Flash Flood Warning | TWC | Cochise | 116 min |
| Jul 16, 8:09 PM MST | Flash Flood Warning | TWC | Pima | 111 min |
| Jul 16, 9:22 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 17, 2:05 PM MST | Flash Flood Warning | TWC | Cochise, Santa Cruz | 55 min |
| Jul 17, 3:51 PM MST | Areal Flood Advisory | TWC | Cochise | 3 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.