Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 29, NWS Las Vegas, NV

August 3, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 3, 2012, 5:38 PM MST for Mohave County, Arizona. It was in force for 37 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 3, 2012, 5:38 PM MST (00:38 UTC)
Expired
Aug 3, 2012, 6:15 PM MST
In force
37 min
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon

County Mohave County, AZ

The radar

The Cedar City radar (KICX), 86 km from the middle of the area, began a volume at 00:41 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

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.6 hours before the alert went out and 198 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.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 00:00Z on 2012-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 392 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 2012-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
392 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
2246 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

096 
WUUS55 KVEF 040038
SVRVEF
AZC015-040115-
/O.NEW.KVEF.SV.W.0029.120804T0038Z-120804T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
538 PM MST FRI AUG 3 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MOHAVE COUNTY IN NORTHWEST ARIZONA...

* UNTIL 615 PM MST.

* AT 532 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR PIPE SPRING...OR 
16 MILES SOUTHEAST OF COLORADO CITY ALONG STATE ROUTE 389 BETWEEN 
MILE MARKERS 11 AND 25. THE STORM IS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...PIPE SPRING AND PORTIONS OF STATE 
ROUTE 389 BETWEEN MILE MARKERS 11 AND 25.
  
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 3677 11290 3693 11287 3689 11260 3674 11268
TIME...MOT...LOC 0036Z 108DEG 3KT 3683 11278

$$

KENNEDY
2 follow-up statements
112 
WWUS55 KVEF 040101
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
601 PM MST FRI AUG 3 2012

AZC015-040115-
/O.CON.KVEF.SV.W.0029.000000T0000Z-120804T0115Z/
MOHAVE AZ-
601 PM MST FRI AUG 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MST
FOR NORTHEASTERN MOHAVE COUNTY...

AT 553 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR PIPE 
SPRING NATIONAL MONUMENT OR 16 MILES SOUTHEAST OF COLORADO CITY 
ALONG STATE ROUTE 389 BETWEEN MILE MARKERS 11 AND 25.  ALTHOUGH THIS 
STORM IS SLOWLY DRIFTING SOUTH OF ROUTE 389...VERY STRONG WINDS WILL 
IMPACT THE SURROUNDING AREAS...AND ALSO RESULT IN DANGEROUS 
CROSSWINDS ALONG ROUTE 389.

LOCATIONS IMPACTED INCLUDE...
PIPE SPRING...KAIBAB CAMPGROUND...AND PORTIONS OF STATE ROUTE 389 
BETWEEN MILE MARKERS 11 AND 25.

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 3677 11290 3693 11287 3689 11260 3674 11268
TIME...MOT...LOC 0056Z 108DEG 3KT 3684 11280

$$

KENNEDY
936 
WWUS55 KVEF 040113 RRA
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
613 PM MST FRI AUG 3 2012

AZC015-040120-
/O.EXP.KVEF.SV.W.0029.000000T0000Z-120804T0115Z/
MOHAVE AZ-
613 PM MST FRI AUG 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MOHAVE COUNTY  
NEAR PIPE SPRING NATIONAL MONUMENT WILL EXPIRE AT 615 PM MST. 
ALTHOUGH THE THREAT OF SEVERE WEATHER HAS ENDED...MOTORISTS ALONG 
STATE ROUTE 389 SOUTH OF COLORADO CITY SHOULD BE ALERT FOR STRONG 
CROSSWINDS THROUGH 630 PM MST.

LAT...LON 3677 11290 3693 11287 3689 11260 3674 11268
TIME...MOT...LOC 0110Z 108DEG 3KT 3684 11281

$$
KENNEDY

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 3, 9:09 PM MSTSevere Thunderstorm WarningVEFMohave51 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.