Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 28, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 21, 2012, 6:05 PM MST for Pima County, Arizona. It was in force for 40 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 21, 2012, 6:05 PM MST (01:05 UTC)
- Expired
- Jul 21, 2012, 6:45 PM MST
- In force
- 40 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Phoenix radar (KIWA), 175 km from the middle of the area, began a volume at 01:05 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, 1.1 hours before the alert went out and 173 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
- 36 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1723 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
605 WUUS55 KTWC 220105 SVRTWC AZC019-220145- /O.NEW.KTWC.SV.W.0028.120722T0105Z-120722T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 605 PM MST SAT JUL 21 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 645 PM MST * AT 600 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES NORTHEAST OF ORGAN PIPE NATIONAL MONUMENT...OR 49 MILES WEST OF SELLS...AND MOVING NORTHWEST AT 10 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LUKEVILLE. 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 3192 11293 3220 11288 3213 11247 3175 11240 TIME...MOT...LOC 0105Z 116DEG 7KT 3203 11272 $$
1 follow-up statement
329 WWUS55 KTWC 220145 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 645 PM MST SAT JUL 21 2012 AZC019-220154- /O.EXP.KTWC.SV.W.0028.000000T0000Z-120722T0145Z/ PIMA AZ- 645 PM MST SAT JUL 21 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL PIMA COUNTY WILL EXPIRE AT 645 PM MST... THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS FALLEN BELOW SEVERE LEVELS. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE AT 645 PM MST. HOWEVER...STRONG STORMS CONTINUE TO DEVELOP ACROSS WESTERN PIMA COUNTY...ESPECIALLY WEST OF HIGHWAY 85. LAT...LON 3192 11293 3220 11288 3213 11247 3175 11240 TIME...MOT...LOC 0144Z 021DEG 13KT 3190 11273 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 1:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 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.