Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS Las Vegas, NV

July 12, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 12, 2012, 3:01 PM MST for Mohave County, Arizona. It was in force for 44 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: Jul 12, 2012, 3:01 PM MST (22:01 UTC)
Expired: Jul 12, 2012, 3:45 PM MST
In force: 44 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 129 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 159 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: 2 J/kg
Mixed-layer CIN: -274 J/kg
Mixed-layer LCL: 2079 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 72 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.

980 
WUUS55 KVEF 122201
SVRVEF
AZC015-122245-
/O.NEW.KVEF.SV.W.0002.120712T2201Z-120712T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
301 PM MST THU JUL 12 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 345 PM MST.

* AT 256 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM DIAMOND CREEK CAMPGROUND TO 6 MILES NORTH OF DIAMOND M
  RANCH...OR ALONG A LINE EXTENDING FROM 55 MILES NORTHEAST OF
  KINGMAN TO 39 MILES EAST OF KINGMAN...AND WERE MOVING WEST AT 20
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  VALENTINE...PEACH SPRINGS AND ROUTE 66.

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 3584 11332 3530 11333 3527 11381 3586 11383
      3589 11331 3587 11330
TIME...MOT...LOC 2201Z 087DEG 17KT 3579 11341 3538 11340

$$

ADAIR

2 follow-up statements

588 
WWUS55 KVEF 122228
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
328 PM MST THU JUL 12 2012

AZC015-122245-
/O.CON.KVEF.SV.W.0002.000000T0000Z-120712T2245Z/
MOHAVE AZ-
328 PM MST THU JUL 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM MST
FOR CENTRAL MOHAVE COUNTY...

AT 321 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THE LEADING EDGE OF THESE STORMS WAS 
LOCATED ALONG A LINE EXTENDING FROM 21 MILES NORTHWEST OF PEACH 
SPRINGS TO JUST NORTH OF VALENTINE..AND WERE MOVING WEST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
VALENTINE...PEACH SPRINGS...ROUTE 66 AND BUCK AND DOE ROAD SOUTH OF 
THE GRAND CANYON SKYWALK.

BRIEF HEAVY RAIN...FREQUENT LIGHTNING AND POSSIBLY HAIL WILL ALSO 
ACCOMPANY THESE STORMS.

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 3587 11342 3529 11342 3529 11344 3530 11381
      3586 11383 3587 11358
TIME...MOT...LOC 2221Z 090DEG 31KT 3580 11364 3539 11363

$$

ADAIR

359 
WWUS55 KVEF 122245
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
345 PM MST THU JUL 12 2012

AZC015-122252-
/O.EXP.KVEF.SV.W.0002.000000T0000Z-120712T2245Z/
MOHAVE AZ-
345 PM MST THU JUL 12 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MOHAVE COUNTY WILL
EXPIRE AT 345 PM MST...

THUNDERSTORMS OVER CENTRAL MOHAVE COUNTY WILL PERSIST BUT ARE NO 
LONGER EXPECTED TO BE SEVERE. STRONG WIND GUSTS AROUND 50 MPH AND 
BRIEF HEAVY RAIN WILL IMPACT BUCK AND DOE ROAD BETWEEN ROUTE 66 AND 
THE GRAND CANYON SKYWALK THROUGH 415 PM.


LAT...LON 3587 11342 3529 11342 3529 11344 3530 11381
      3586 11383 3587 11358
TIME...MOT...LOC 2242Z 090DEG 31KT 3579 11387 3538 11385

$$

JA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 10:56 AM MST	Flash Flood Watch	VEF	Mohave	61 hr

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.