Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Las Vegas, NV

October 11, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Oct 11, 2012, 4:25 PM MST for Mohave County, Arizona. It was in force for 19 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: Oct 11, 2012, 4:25 PM MST (23:25 UTC)
Expired: Oct 11, 2012, 4:44 PM MST
In force: 19 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 127 km from the middle of the area, began a volume at 23:27 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 12:00Z, 11.4 hours before the alert went out and 162 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 161 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.

498 
WUUS55 KVEF 112325
SVRVEF
AZC015-120000-
/O.NEW.KVEF.SV.W.0065.121011T2325Z-121012T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
425 PM MST THU OCT 11 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 500 PM MST.

* AT 422 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED OVER CENTRAL MOHAVE
  COUNTY...OR 26 MILES NORTH OF WIKIEUP...AND WAS MOVING NORTH AT 50
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  INTERSTATE 40 BETWEEN MILE MARKERS 72 AND 86.

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 3550 11365 3547 11339 3500 11349 3502 11371
TIME...MOT...LOC 2325Z 188DEG 42KT 3510 11359

$$

MORGAN

1 follow-up statement

574 
WWUS55 KVEF 112344
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
444 PM MST THU OCT 11 2012

AZC015-112354-
/O.CAN.KVEF.SV.W.0065.000000T0000Z-121012T0000Z/
MOHAVE AZ-
444 PM MST THU OCT 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MOHAVE COUNTY IS
CANCELLED...

AT 443 PM MST...RADAR SHOWED THAT THE THUNDERSTORM WHICH CROSSED 
INTERSTATE 40 EAST OF HIGHWAY 93 HAD WEAKENED. THEREFORE...THE 
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3550 11365 3547 11339 3500 11349 3502 11371
TIME...MOT...LOC 2344Z 188DEG 42KT 3532 11355

$$

MORGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 11, 8:39 AM MST	Flash Flood Warning	VEF	Mohave	111 min
Oct 11, 11:48 AM MST	Areal Flood Advisory	VEF	Mohave	2 hr
Oct 11, 4:07 PM MST	Severe Thunderstorm Warning	VEF	Mohave	23 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2012 Every 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.