Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 49, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Sep 6, 2012, 4:57 PM MST for Maricopa County, Yuma County, Arizona. It was in force for 49 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 6, 2012, 4:57 PM MST (23:57 UTC)
- Expired
- Sep 6, 2012, 5:46 PM MST
- In force
- 49 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
Counties Maricopa County, AZ, Yuma County, AZ
The radar
The Yuma radar (KYUX), 118 km from the middle of the area, began a volume at 23:59 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
Yuma Prvg Ground, AZ (K1Y7), launched 12:00Z, 12.0 hours before the alert went out and 95 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1992 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
824 WUUS55 KPSR 062357 SVRPSR AZC013-027-070100- /O.NEW.KPSR.SV.W.0049.120906T2357Z-120907T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 457 PM MST THU SEP 6 2012 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME SOUTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA... EAST CENTRAL YUMA COUNTY IN SOUTHWEST ARIZONA... * UNTIL 600 PM MST * AT 453 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR DATELAND...AND MOVING SOUTHWEST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. LAT...LON 3280 11331 3262 11351 3279 11367 3294 11344 TIME...MOT...LOC 2357Z 047DEG 7KT 3278 11350 $$ DEWEY
2 follow-up statements
066 WWUS55 KPSR 070029 SVSPSR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 529 PM MST THU SEP 6 2012 AZC013-027-070100- /O.CON.KPSR.SV.W.0049.000000T0000Z-120907T0100Z/ YUMA AZ-MARICOPA AZ- 529 PM MST THU SEP 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MST FOR EXTREME SOUTHWESTERN MARICOPA AND EAST CENTRAL YUMA COUNTIES... AT 526 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR DATELAND...AND NEARLY STATIONARY. THE SEVERE THUNDERSTORM WILL CONTINUE TO PRODUCE HEAVY RAINFALL AND WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. && LAT...LON 3280 11331 3262 11351 3279 11367 3294 11344 TIME...MOT...LOC 0028Z 047DEG 7KT 3274 11355 $$ DEWEY
260 WWUS55 KPSR 070046 SVSPSR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 546 PM MST THU SEP 6 2012 AZC013-027-070054- /O.CAN.KPSR.SV.W.0049.000000T0000Z-120907T0100Z/ YUMA AZ-MARICOPA AZ- 546 PM MST THU SEP 6 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN MARICOPA AND EAST CENTRAL YUMA COUNTIES IS CANCELLED... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND MOVED SOUTH OF THE INTERSTATE INTO OPEN DESERT AREAS. HEAVY RAINFALL FROM THIS STORM IS STILL A THREAT AND RUNOFF FROM THIS STORM WILL CONTINUE TO FLOW INTO WASHES IN THE AREA FOR SEVERAL HOURS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3280 11331 3262 11351 3279 11367 3294 11344 TIME...MOT...LOC 0044Z 047DEG 7KT 3272 11358 $$ DEWEY
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 5:32 PM MST | Special Weather Statement | PSR | 43 min | |
| Sep 5, 5:38 PM MST | Areal Flood Advisory | PSR | La Paz | 112 min |
| Sep 5, 7:35 PM MST | Areal Flood Advisory | PSR | La Paz | 115 min |
| Sep 6, 1:35 PM MST | Flash Flood Watch | PSR | 12 hr | |
| Sep 6, 3:03 PM MST | Areal Flood Advisory | PSR | Maricopa, Yuma | 3 hr |
| Sep 6, 4:01 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 3 hr |
| Sep 6, 4:16 PM MST | Dust Storm Warning | PSR | 3 hr | |
| Sep 6, 4:19 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 41 min |
| Sep 6, 4:41 PM MST | Blowing Dust Advisory | PSR | 11 min | |
| Sep 6, 4:46 PM MST | Areal Flood Advisory | PSR | Pinal | 119 min |
| Sep 6, 4:50 PM MST | Flash Flood Warning | PSR | Yuma | 106 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.