Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 30, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 22, 2012, 1:15 PM MST for Pima County, Arizona. It was in force for 60 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 22, 2012, 1:15 PM MST (20:15 UTC)
- Expired
- Jul 22, 2012, 2:15 PM MST
- In force
- 60 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Tucson radar (KEMX), 60 km from the middle of the area, began a volume at 20:17 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, 8.3 hours before the alert went out and 20 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
- 234 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1242 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -16 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.
968 WUUS55 KTWC 222015 SVRTWC AZC019-222115- /O.NEW.KTWC.SV.W.0030.120722T2015Z-120722T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 115 PM MST SUN JUL 22 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITIES OF...TUCSON...ORO VALLEY...MARANA... * UNTIL 215 PM MST * AT 106 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THE FIRST STORM WAS LOCATED 5 MILES SOUTH AND SOUTHWEST OF TUCSON...WITH A SECOND 15 MILES SOUTHEAST OF TUCSON AND MOVING NORTH AT 10 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AVRA VALLEY...ORO VALLEY...MARANA. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH...FREQUENT LIGHTNING...AND DENSE AREAS OF BLOWING DUST FOLLOWED BY HEAVY RAIN WITH THESE STORMS. && LAT...LON 3249 11150 3250 11058 3202 11047 3199 11122 TIME...MOT...LOC 2013Z 166DEG 10KT 3211 11104 $$ MEYER
2 follow-up statements
888 WWUS55 KTWC 222037 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 137 PM MST SUN JUL 22 2012 AZC019-222115- /O.CON.KTWC.SV.W.0030.000000T0000Z-120722T2115Z/ PIMA AZ- 137 PM MST SUN JUL 22 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM MST FOR NORTHEASTERN PIMA COUNTY... AT 130 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE AN AREA OF STRONG TO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THE STRONGEST STORMS WERE NOTED NEAR PICTURE ROCKS NORTHEAST OF TUCSON...AND THE CATALINA FOOTHILLS NEAR NORTH TUCSON...AS WELL AS THE RINCON MOUNTAINS EAST OF TUCSON. MOVEMENT WAS TO THE NORTH AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...FREQUENT LIGHTNING...AND AREAS OF BLOWING DUST FOLLOWED BY BRIEF LOCALLY HEAVY RAIN WITH THIS STORM. && LAT...LON 3249 11150 3250 11058 3202 11047 3199 11122 TIME...MOT...LOC 2034Z 166DEG 10KT 3228 11088 $$ MEYER
508 WWUS55 KTWC 222111 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 211 PM MST SUN JUL 22 2012 AZC019-222119- /O.EXP.KTWC.SV.W.0030.000000T0000Z-120722T2115Z/ PIMA AZ- 211 PM MST SUN JUL 22 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIMA COUNTY WILL EXPIRE AT 215 PM MST... AT 209 PM MST THE SHOWERS AND THUNDERSTORMS HAD GENERALLY WEAKENED AND MOVED NORTH OUT OF NORTHEASTERN PIMA COUNTY. SOME STORMS WERE STILL NOTED IN THE REDINGTON AND CATALINA AREAS BUT THOSE WILL QUICKLY MOVE OUT OF THE AREA. LAT...LON 3249 11150 3250 11058 3202 11047 3199 11122 TIME...MOT...LOC 2109Z 166DEG 10KT 3237 11091 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:05 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Jul 21, 6:17 PM MST | Areal Flood Advisory | TWC | Pima | 118 min |
| Jul 22, 11:44 AM MST | Special Weather Statement | TWC | Santa Cruz | 31 min |
| Jul 22, 12:27 PM MST | Special Weather Statement | TWC | Pinal | 48 min |
| Jul 22, 12:40 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Jul 22, 12:52 PM MST | Severe Thunderstorm Warning | TWC | Pima | 23 min |
| Jul 22, 1:30 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 3 hr |
| Jul 22, 1:36 PM MST | Special Weather Statement | TWC | 39 min | |
| Jul 22, 1:56 PM MST | Flash Flood Warning | TWC | Pima | 92 min |
| Jul 22, 2:39 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 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.