Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 40, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 20, 2012, 5:51 PM MST for Mohave 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
- Aug 20, 2012, 5:51 PM MST (00:51 UTC)
- Expired
- Aug 20, 2012, 6:30 PM MST
- In force
- 39 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 61 km from the middle of the area, began a volume at 00:51 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
Las Vegas, NV (KVEF), launched 00:00Z, 0.9 hours before the alert went out and 148 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
- 633 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 2388 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
494 WUUS55 KVEF 210051 SVRVEF AZC015-210130- /O.NEW.KVEF.SV.W.0040.120821T0051Z-120821T0130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 551 PM MST MON AUG 20 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 630 PM MST. * AT 542 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF DOLAN SPRINGS...OR 24 MILES NORTHWEST OF KINGMAN...AND WAS MOVING NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF WESTERN MOHAVE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM PASSES. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3560 11413 3542 11419 3550 11441 3567 11433 TIME...MOT...LOC 0049Z 276DEG 2KT 3552 11421 $$ ASG
2 follow-up statements
895 WWUS55 KVEF 210056 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 556 PM MST MON AUG 20 2012 AZC015-210130- /O.CON.KVEF.SV.W.0040.000000T0000Z-120821T0130Z/ MOHAVE AZ- 556 PM MST MON AUG 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR WEST CENTRAL MOHAVE COUNTY... AT 546 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES SOUTHEAST OF DOLAN SPRINGS...OR 24 MILES NORTHWEST OF KINGMAN. THIS STORM WAS NEARLY STATIONARY. LOCATIONS IMPACTED INCLUDE... DOLAN SPRINGS...PORTIONS OF HIGHWAY 93 BETWEEN MILE MARKERS 40 AND 47. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND DEBRIS. IN ADDITION...HAIL AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM PASSES. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3567 11433 3560 11413 3543 11419 3552 11440 TIME...MOT...LOC 0054Z 276DEG 2KT 3552 11421 $$ ASG
124 WWUS55 KVEF 210122 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 622 PM MST MON AUG 20 2012 AZC015-210131- /O.EXP.KVEF.SV.W.0040.000000T0000Z-120821T0130Z/ MOHAVE AZ- 622 PM MST MON AUG 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MOHAVE COUNTY WILL EXPIRE AT 630 PM MST... THE THUNDERSTORM JUST SOUTH OF DOLAN SPRINGS HAS WEAKENED. THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE. LAT...LON 3567 11433 3560 11413 3543 11419 3552 11440 TIME...MOT...LOC 0121Z 276DEG 2KT 3552 11419 $$ ASG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 6:09 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Aug 20, 7:37 PM MST | Flash Flood Warning | VEF | Mohave | 4 hr |
| Aug 20, 8:01 PM MST | Flash Flood Warning | VEF | Mohave | 119 min |
| Aug 21, 11:39 AM MST | Flash Flood Watch | VEF | Mohave | 36 hr |
| Aug 21, 1:43 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 32 min |
| Aug 21, 3:16 PM MST | Flash Flood Warning | VEF | Mohave | 119 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.