Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 37, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 18, 2012, 2:43 PM MST for Mohave County, Arizona. It was in force for 47 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 18, 2012, 2:43 PM MST (21:43 UTC)
- Expired
- Aug 18, 2012, 3:30 PM MST
- In force
- 47 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 88 km from the middle of the area, began a volume at 21:47 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 12:00Z, 9.7 hours before the alert went out and 152 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
- 33 J/kg
- Mixed-layer CIN
- -303 J/kg
- Mixed-layer LCL
- 2227 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
616 WUUS55 KVEF 182143 SVRVEF AZC015-182230- /O.NEW.KVEF.SV.W.0037.120818T2143Z-120818T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 243 PM MST SAT AUG 18 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 330 PM MST. * AT 238 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR GRAND CANYON RANCH...OR 44 MILES NORTH OF KINGMAN...AND WAS MOVING EAST AT 5 MPH. * LOCATIONS IMPACTED INCLUDE... GRAND CANYON RANCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE INJURY AND DAMAGE PROPERTY. IN ADDITION...STRONG WINDS AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE SHELTER IN A STURDY BUILDING. IF IT IS SAFE TO DO SO...TAKE APPROPRIATE ACTIONS TO PROTECT VEHICLES AND PROPERTY. 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 3604 11385 3581 11374 3573 11412 3589 11418 TIME...MOT...LOC 2143Z 250DEG 6KT 3585 11402 $$ PIERCE
2 follow-up statements
307 WWUS55 KVEF 182203 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 303 PM MST SAT AUG 18 2012 AZC015-182230- /O.CON.KVEF.SV.W.0037.000000T0000Z-120818T2230Z/ MOHAVE AZ- 303 PM MST SAT AUG 18 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR CENTRAL MOHAVE COUNTY... AT 255 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR GRAND CANYON RANCH...OR 45 MILES NORTH OF KINGMAN...AND WAS MOVING EAST AT 5 MPH. LOCATIONS IMPACTED INCLUDE...PIERCE FERRY ROAD AND MAINLY RURAL AREAS OF CENTRAL MOHAVE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE INJURY AND DAMAGE PROPERTY. IN ADDITION...STRONG WINDS AND LIGHTNING ARE LIKELY. LIGHTNING CAN KILL! TAKE SHELTER IN A STURDY BUILDING. IF IT IS SAFE TO DO SO...TAKE APPROPRIATE ACTIONS TO PROTECT VEHICLES AND PROPERTY. REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...NWSVEGAS. && LAT...LON 3604 11385 3581 11374 3573 11412 3589 11418 TIME...MOT...LOC 2202Z 250DEG 6KT 3587 11398 $$ PIERCE
352 WWUS55 KVEF 182222 SVSVEF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 322 PM MST SAT AUG 18 2012 AZC015-182231- /O.EXP.KVEF.SV.W.0037.000000T0000Z-120818T2230Z/ MOHAVE AZ- 322 PM MST SAT AUG 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MOHAVE COUNTY WILL EXPIRE AT 330 PM MST... THE THUNDERSTORM NEAR GRAND CANYON RANCH AND PIERCE FERRY ROAD HAS WEAKENED. THE SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 330 PM MST. LAT...LON 3604 11385 3581 11374 3573 11412 3589 11418 TIME...MOT...LOC 2221Z 250DEG 6KT 3588 11394 $$ PIERCE
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 6:21 PM MST | Areal Flood Advisory | VEF | Mohave | 106 min |
| Aug 18, 12:25 PM MST | Flash Flood Warning | VEF | Mohave | 78 min |
| Aug 18, 3:45 PM MST | Flash Flood Warning | VEF | Mohave | 94 min |
| Aug 18, 4:56 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
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.