Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 27, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 21, 2012, 3:36 PM MST for Graham County, Pinal County, Arizona. It was in force for 39 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, 3:36 PM MST (22:36 UTC)
- Expired
- Jul 21, 2012, 4:15 PM MST
- In force
- 39 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Graham County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 97 km from the middle of the area, began a volume at 22:36 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, 10.6 hours before the alert went out and 112 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
- 444 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1517 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
205
WUUS55 KTWC 212236
SVRTWC
AZC009-021-212315-
/O.NEW.KTWC.SV.W.0027.120721T2236Z-120721T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
336 PM MST SAT JUL 21 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA...
WEST CENTRAL GRAHAM COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 415 PM MST
* AT 330 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 10
MILES SOUTHEAST OF KEARNY...OR 30 MILES SOUTH OF GLOBE...AND MOVING
NORTHWEST AT 25 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
KELVIN.
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 3317 11027 3280 11071 3299 11132 3325 11096
3324 11093 3299 11077 3304 11072 3307 11073
3315 11063 3314 11059 3319 11051 3320 11041
3329 11046 3335 11045 3336 11044
TIME...MOT...LOC 2236Z 131DEG 23KT 3298 11082
$$
!2 follow-up statements
242
WWUS55 KTWC 212251
SVSTWC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
351 PM MST SAT JUL 21 2012
AZC009-021-212315-
/O.CON.KTWC.SV.W.0027.000000T0000Z-120721T2315Z/
GRAHAM AZ-PINAL AZ-
351 PM MST SAT JUL 21 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM MST
FOR EAST CENTRAL PINAL AND WEST CENTRAL GRAHAM COUNTIES...
AT 350 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM KEARNY TO 9 MILES NORTH OF
DUDLEYVILLE TO SAN CARLOS RESERVOIR...MOVING NORTHWEST AT 25 MPH.
LAT...LON 3317 11027 3280 11071 3299 11132 3325 11096
3324 11093 3299 11077 3304 11072 3307 11073
3315 11063 3314 11059 3319 11051 3320 11041
3329 11046 3335 11045 3336 11044
TIME...MOT...LOC 2252Z 131DEG 23KT 3304 11100 3305 11072
3321 11047
$$120
WWUS55 KTWC 212316
SVSTWC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
416 PM MST SAT JUL 21 2012
AZC009-021-212325-
/O.EXP.KTWC.SV.W.0027.000000T0000Z-120721T2315Z/
GRAHAM AZ-PINAL AZ-
416 PM MST SAT JUL 21 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PINAL AND WEST
CENTRAL GRAHAM COUNTIES HAS EXPIRED...
ALTHOUGH THE LINE OF SEVERE STORMS HAS WEAKENED AS THEY MOVED INTO
NORTHERN PINAL AND SOUTHWEST GILA COUNTY...THEY STILL ARE CAPABLE OF
PRODUCING VERY HEAVY RAINFALL...SMALL HAIL AND WINDS TO 50 MPH
THROUGH 445 PM MST.
LAT...LON 3317 11027 3280 11071 3299 11132 3325 11096
3324 11093 3299 11077 3304 11072 3307 11073
3315 11063 3314 11059 3319 11051 3320 11041
3329 11046 3335 11045 3336 11044
TIME...MOT...LOC 2315Z 131DEG 23KT 3314 11113 3315 11085
3331 11060
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 5:26 PM MST | Areal Flood Advisory | TWC | Pima | 94 min |
| Jul 21, 12:49 PM MST | Special Weather Statement | TWC | Santa Cruz | 41 min |
| Jul 21, 12:56 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 34 min |
| Jul 21, 1:43 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 2 hr |
| Jul 21, 1:53 PM MST | Flash Flood Warning | TWC | Pima | 112 min |
| Jul 21, 2:26 PM MST | Areal Flood Advisory | TWC | Graham | 2 hr |
| Jul 21, 2:27 PM MST | Severe Thunderstorm Warning | TWC | Pima | 33 min |
| Jul 21, 3:01 PM MST | Severe Thunderstorm Warning | TWC | Pima | 44 min |
| Jul 21, 3:05 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Jul 21, 3:25 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 50 min |
| Jul 21, 3:38 PM MST | Areal Flood Advisory | TWC | Pima | 58 min |
| Jul 21, 4:07 PM MST | Areal Flood Advisory | TWC | Pinal | 83 min |
| Jul 21, 4:11 PM MST | Areal Flood Advisory | TWC | Pinal | 79 min |
| Jul 21, 4:27 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 108 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.