Alert archive / Nevada / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 2, NWS Las Vegas, NV

July 8, 2014Clark County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 8, 2014, 2:41 PM PDT for Clark County, Nevada. It was in force for 49 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 8, 2014, 2:41 PM PDT (21:41 UTC)
Expired: Jul 8, 2014, 3:30 PM PDT
In force: 49 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon

County Clark County, NV

The radar

The Las Vegas radar (KESX), 48 km from the middle of the area, began a volume at 21:42 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 54 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: 24 J/kg
Mixed-layer CIN: -258 J/kg
Mixed-layer LCL: 2766 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: -37 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.

847 
WUUS55 KVEF 082141
SVRVEF
NVC003-082230-
/O.NEW.KVEF.SV.W.0002.140708T2141Z-140708T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
241 PM PDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 330 PM PDT.

* AT 237 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN       
  EXCESS OF 60 MPH AND HAIL UP TO QUARTER SIZE.  THIS STORM WAS      
  LOCATED NEAR GOODSPRINGS...OR 7 MILES NORTHWEST OF JEAN...AND      
  WAS MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SLOAN
  INTERSTATE 15 BETWEEN SLOAN AND JEAN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM WILL PRODUCE HIGH WINDS WHICH CAN BRING DOWN TREES AND
POWER LINES AND CAUSE BLOWING DUST. ALSO...LIGHTNING CAN KILL! TAKE
COVER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS UNTIL THE STORM
PASSES.

REPORT SEVERE WEATHER TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3603 11541 3593 11511 3573 11527 3586 11554
TIME...MOT...LOC 2140Z 215DEG 13KT 3587 11538

$$

OUTLER

2 follow-up statements

435 
WWUS55 KVEF 082156
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
256 PM PDT TUE JUL 8 2014

NVC003-082230-
/O.CON.KVEF.SV.W.0002.000000T0000Z-140708T2230Z/
CLARK NV-
256 PM PDT TUE JUL 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM PDT
FOR CENTRAL CLARK COUNTY...

AT 255 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL AND DAMAGING WINDS TO 60 MPH.  THIS STORM WAS LOCATED 8 MILES 
NORTHEAST OF GOODSPRINGS...OR 9 MILES NORTH OF JEAN...MOVING 
NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
SLOAN...JEAN



PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM WILL PRODUCE HIGH WINDS WHICH CAN BRING DOWN TREES AND
POWER LINES AND CAUSE BLOWING DUST. ALSO...LIGHTNING CAN KILL! TAKE
COVER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS UNTIL THE STORM
PASSES.

REPORT SEVERE WEATHER TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3603 11541 3593 11511 3573 11527 3586 11554
TIME...MOT...LOC 2156Z 215DEG 13KT 3592 11534

$$

OUTLER

768 
WWUS55 KVEF 082229
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
329 PM PDT TUE JUL 8 2014

NVC003-082239-
/O.EXP.KVEF.SV.W.0002.000000T0000Z-140708T2230Z/
CLARK NV-
329 PM PDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLARK COUNTY WILL
EXPIRE AT 330 PM PDT...

THIS THUNDERSTORM REMAINS SEVERE BUT HAS MOVED FURTHER NORTH...SO A NEW 
WARNING HAS BEEN ISSUED. PLEASE SEE THE LATEST SEVERE THUNDERSTORM 
WARNING FOR DETAILS.

LAT...LON 3603 11541 3593 11511 3573 11527 3586 11554
TIME...MOT...LOC 2229Z 215DEG 13KT 3602 11526

$$

OUTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:04 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Jul 7, 9:22 PM PDT	Flash Flood Warning	VEF	Clark	113 min
Jul 7, 10:07 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Jul 7, 11:35 PM PDT	Areal Flood Advisory	VEF	Clark	85 min
Jul 8, 3:28 PM PDT	Severe Thunderstorm Warning	VEF	Clark	47 min
Jul 8, 4:15 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Jul 8, 4:52 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr

Nearby

Severe Thunderstorm Warnings in Nevada, 2014 Every severe thunderstorm warning in 2014

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.