Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 64, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 13, 2012, 2:49 PM MST for Pima County, Arizona. It was in force for 26 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 13, 2012, 2:49 PM MST (21:49 UTC)
- Expired
- Aug 13, 2012, 3:15 PM MST
- In force
- 26 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Tucson radar (KEMX), 88 km from the middle of the area, began a volume at 21:51 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, 9.8 hours before the alert went out and 63 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
- 86 J/kg
- Mixed-layer CIN
- -420 J/kg
- Mixed-layer LCL
- 3145 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
346 WUUS55 KTWC 132149 SVRTWC AZC019-132215- /O.NEW.KTWC.SV.W.0064.120813T2149Z-120813T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 249 PM MST MON AUG 13 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 315 PM MST * AT 242 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 9 MILES EAST OF KITT PEAK...OR 25 MILES EAST OF SELLS...AND MOVING NORTHWEST AT 10 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SANTA ROSA RANCH...SAN PEDRO...SAN ISIDRO...PAN TAK AND COMOBABI. 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 3220 11147 3192 11131 3179 11163 3206 11188 TIME...MOT...LOC 2148Z 151DEG 10KT 3194 11146 $$ MOLLERE
2 follow-up statements
528 WWUS55 KTWC 132204 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 304 PM MST MON AUG 13 2012 AZC019-132215- /O.CON.KTWC.SV.W.0064.000000T0000Z-120813T2215Z/ PIMA AZ- 304 PM MST MON AUG 13 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MST FOR CENTRAL PIMA COUNTY... AT 300 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF PAN TAK...OR 24 MILES EAST OF SELLS...MOVING NORTHWEST AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3220 11147 3192 11131 3179 11163 3206 11188 TIME...MOT...LOC 2204Z 151DEG 10KT 3198 11149 $$ MOLLERE
343 WWUS55 KTWC 132218 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 318 PM MST MON AUG 13 2012 AZC019-132226- /O.EXP.KTWC.SV.W.0064.000000T0000Z-120813T2215Z/ PIMA AZ- 318 PM MST MON AUG 13 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIMA COUNTY HAS EXPIRED... THE STORM THAT WAS INDICATED TO BE SEVERE BY RADAR SIGNATURES HAS SINCE DECREASED IN INTENSITY AND IS NO LONGER SEVERE. THEREFORE... THE WARNING WAS ALLOWED TO EXPIRE AT 315 PM MST. LAT...LON 3220 11147 3192 11131 3179 11163 3206 11188 TIME...MOT...LOC 2204Z 151DEG 10KT 3198 11149 $$ MOLLERE
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 3:35 PM MST | Special Weather Statement | TWC | Pima | 40 min |
| Aug 13, 4:10 PM MST | Severe Thunderstorm Warning | TWC | Pima | 35 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.