Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 4, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at May 9, 2012, 5:30 PM MST for Maricopa County, Pinal County, Arizona. It was in force for 60 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 9, 2012, 5:30 PM MST (00:30 UTC)
- Expired
- May 9, 2012, 6:30 PM MST
- In force
- 60 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
Counties Maricopa County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 93 km from the middle of the area, began a volume at 00:32 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 9, 6:15 PM MST | TSTM WND DMG | Gila Bend, AZ | TREE DOWNED THAT BLOCKED TRAFFIC ON PIMA RD AND HIGHWAY 85. CONSTRUCTION DEBRIS FROM INTERSTATE 8 AND BYPASS 85 ROUTE STREWN AROUND. MOST OF THE TOWN OF GILA BEND WITHOUT POWER. ONE POWER LINE SNAPPED DUE TO WIND. SUSTAINED WINDS OVER 45 MPH. NO ESTIMATE ON WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 0.5 hours before the alert went out and 185 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
- 53 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 4423 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
600 WUUS55 KPSR 100030 SVRPSR AZC013-021-100130- /O.NEW.KPSR.SV.W.0004.120510T0030Z-120510T0130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 530 PM MST WED MAY 9 2012 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITIES OF...TONOPAH...GILA BEND...BUCKEYE... EXTREME WEST CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 630 PM MST * AT 527 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTHWEST OF PERRYVILLE TO 12 MILES SOUTHEAST OF ESTRELLA MOUNTAIN RANCH...OR ALONG A LINE EXTENDING FROM 8 MILES NORTH OF BUCKEYE TO 17 MILES SOUTH OF AVONDALE...AND MOVING WEST AT 45 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PALO VERDE...ESTRELLA...SONORAN NATIONAL MONUMENT...WINTERSBURG...PALO VERDE NUCLEAR GENERATION STATION...BOSQUE...PAINTED ROCK DAM... COTTON CENTER AND GILA BEND AUXILIARY FIELD. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! IF YOU ENCOUNTER DENSE BLOWING DUST WHILE DRIVING...PULL OVER AS FAR OFF THE ROADWAY AS POSSIBLE AND PARK. TURN OFF YOUR HEADLIGHTS AND KEEP YOUR FOOT OFF THE BRAKE. && LAT...LON 3362 11261 3306 11217 3275 11269 3348 11326 TIME...MOT...LOC 0030Z 075DEG 40KT 3348 11264 3317 11235 $$ NOLTE
2 follow-up statements
175 WWUS55 KPSR 100110 SVSPSR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 610 PM MST WED MAY 9 2012 AZC021-100119- /O.CAN.KPSR.SV.W.0004.000000T0000Z-120510T0130Z/ PINAL AZ- 610 PM MST WED MAY 9 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME WEST CENTRAL PINAL COUNTY IS CANCELLED... REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3354 11298 3302 11224 3275 11269 3348 11326 TIME...MOT...LOC 0109Z 075DEG 40KT 3337 11314 3306 11285 $$ AZC013-100130- /O.CON.KPSR.SV.W.0004.000000T0000Z-120510T0130Z/ MARICOPA AZ- 610 PM MST WED MAY 9 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR WEST CENTRAL MARICOPA COUNTY... AT 604 PM MST...A LINE OF SEVERE THUNDERSTORMS AND STRONG OUTFLOW BOUNDARY WAS REPORTED CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. IN ADDITION...DENSE BLOWING DUST MAY ACCOMPANY THIS SEVERE STORM. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 12 MILES SOUTHWEST OF TONOPAH TO 7 MILES WEST OF COTTON CENTER...OR ALONG A LINE EXTENDING FROM 12 MILES SOUTHWEST OF TONOPAH TO 10 MILES NORTHWEST OF GILA BEND...MOVING WEST AT 40 MPH. THE LINE OF SEVERE THUNDERSTORMS 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 3354 11298 3302 11224 3275 11269 3348 11326 TIME...MOT...LOC 0109Z 075DEG 40KT 3337 11314 3306 11285 $$ NOLTE
720 WWUS55 KPSR 100127 SVSPSR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 627 PM MST WED MAY 9 2012 AZC013-100136- /O.EXP.KPSR.SV.W.0004.000000T0000Z-120510T0130Z/ MARICOPA AZ- 627 PM MST WED MAY 9 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MARICOPA COUNTY WILL EXPIRE AT 630 PM MST... STRONG GUSTY WINDS AND PERIODS OF BRIEF HEAVY RAINFALL MAY CONTINUE AS THIS STORM DISSIPATES...ESPECIALLY OVER THE GILA BEND AREA. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3354 11298 3302 11224 3275 11269 3348 11326 TIME...MOT...LOC 0126Z 075DEG 40KT 3332 11336 3301 11307 $$ NOLTE
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 5:00 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 57 min |
| May 9, 6:22 PM MST | Special Weather Statement | PSR | 38 min | |
| May 9, 8:11 PM MST | Special Weather Statement | PSR | 64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.