Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 63, NWS Las Vegas, NV

October 11, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Oct 11, 2012, 4:07 PM MST for Mohave County, Arizona. It was in force for 23 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, 4:07 PM MST (23:07 UTC)
Expired: Oct 11, 2012, 4:30 PM MST
In force: 23 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 133 km from the middle of the area, began a volume at 23:08 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, 11.1 hours before the alert went out and 170 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.

762 
WUUS55 KVEF 112307
SVRVEF
AZC015-112330-
/O.NEW.KVEF.SV.W.0063.121011T2307Z-121011T2330Z/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 430 PM MST.

* AT 404 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER
  SOUTH CENTRAL MOHAVE COUNTY...OR 10 MILES NORTH OF WIKIEUP...AND
  WAS MOVING NORTH AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HIGHWAY 93 BETWEEN INTERSTATE 40 AND WIKIEUP.

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 3521 11376 3521 11349 3481 11353 3481 11375
TIME...MOT...LOC 2306Z 182DEG 42KT 3487 11364

$$

MORGAN

1 follow-up statement

957 
WWUS55 KVEF 112327
SVSVEF

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

AZC015-112337-
/O.EXP.KVEF.SV.W.0063.000000T0000Z-121011T2330Z/
MOHAVE AZ-
427 PM MST THU OCT 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MOHAVE COUNTY
WILL EXPIRE AT 430 PM MST...

THIS THUNDERSTORM IS STILL SEVERE AND A NEW WARNING HAS BEEN ISSUED 
TO EXPAND THE AREA IMPACTED BY THIS STORM. PLEASE SEE THE LATEST 
SEVERE THUNDERSTORM WARNING FOR DETAILS.

LAT...LON 3521 11376 3521 11349 3481 11353 3481 11375
TIME...MOT...LOC 2327Z 182DEG 42KT 3512 11363

$$

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, 4:25 PM MST	Severe Thunderstorm Warning	VEF	Mohave	19 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.