Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 98, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 2, 2012, 4:47 PM MST for Pima County, Arizona. It was in force for 43 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
- Sep 2, 2012, 4:47 PM MST (23:47 UTC)
- Expired
- Sep 2, 2012, 5:30 PM MST
- In force
- 43 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Pima County, AZ
The radar
The Tucson radar (KEMX), 67 km from the middle of the area, began a volume at 23:49 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, 11.8 hours before the alert went out and 38 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
- 166 J/kg
- Mixed-layer CIN
- -271 J/kg
- Mixed-layer LCL
- 2049 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
516 WUUS55 KTWC 022347 SVRTWC AZC019-030030- /O.NEW.KTWC.SV.W.0098.120902T2347Z-120903T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 447 PM MST SUN SEP 2 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 530 PM MST * AT 444 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR AND EAST OF THREE POINTS...OR 15 MILES SOUTHWEST OF TUCSON...AND MOVING WEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 70 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3199 11142 3226 11142 3223 11110 3205 11110 TIME...MOT...LOC 2347Z 090DEG 4KT 3214 11120 $$ MEYER
2 follow-up statements
063 WWUS55 KTWC 022355 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 455 PM MST SUN SEP 2 2012 AZC019-030030- /O.CON.KTWC.SV.W.0098.000000T0000Z-120903T0030Z/ PIMA AZ- 455 PM MST SUN SEP 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MST FOR CENTRAL PIMA COUNTY... AT 453 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR RYAN FIELD EXTENDING WEST ALONG HIGHWAY 86 TOWARD THREE POINTS...OR ABOUT 12 TO 20 MILES SOUTHWEST OF TUCSON...MOVING WEST AT 5 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 70 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3199 11142 3226 11142 3223 11110 3205 11110 TIME...MOT...LOC 2353Z 090DEG 4KT 3213 11120 $$ MEYER
043 WWUS55 KTWC 030030 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 530 PM MST SUN SEP 2 2012 AZC019-030040- /O.EXP.KTWC.SV.W.0098.000000T0000Z-120903T0030Z/ PIMA AZ- 530 PM MST SUN SEP 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIMA COUNTY HAS EXPIRED... AT 530 PM MST THE THUNDERSTORM BETWEEN RYAN FIELD AND THREE POINTS NOW NORTH OF HIGHWAY 86 HAD DIMINISHED IN INTENSITY AND SPREAD NORTH OF THE AREA. LAT...LON 3199 11142 3226 11142 3223 11110 3205 11110 TIME...MOT...LOC 0030Z 090DEG 4KT 3213 11125 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 7:50 PM MST | Areal Flood Advisory | TWC | Pima | 115 min |
| Sep 2, 2:10 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Sep 2, 3:19 PM MST | Special Weather Statement | TWC | 56 min | |
| Sep 2, 3:25 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 50 min |
| Sep 2, 3:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 44 min |
| Sep 2, 3:35 PM MST | Areal Flood Advisory | TWC | Pima | 85 min |
| Sep 2, 3:43 PM MST | Special Weather Statement | TWC | Pima | 47 min |
| Sep 2, 3:59 PM MST | Areal Flood Advisory | TWC | Pima | 91 min |
| Sep 2, 4:15 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 3 hr |
| Sep 2, 4:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 23 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.