Alert archive / Arizona / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 91, NWS Las Vegas, NV

September 22, 2016Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Sep 22, 2016, 4:45 PM MST for Mohave County, Arizona. It was in force for 45 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
Sep 22, 2016, 4:45 PM MST (23:45 UTC)
Expired
Sep 22, 2016, 5:30 PM MST
In force
45 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 23:45 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, 11.8 hours before the alert went out and 181 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 12:00Z on 2016-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2016-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 square meters per square second.19395878Sfc1 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
77 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

219 
WUUS55 KVEF 222345
SVRVEF
AZC015-230030-
/O.NEW.KVEF.SV.W.0091.160922T2345Z-160923T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
445 PM MST THU SEP 22 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

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

* UNTIL 530 PM MST

* AT 445 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED NEAR GRAND CANYON RANCH...OR 47
  MILES EAST OF BOULDER CITY...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GRAND CANYON SKYWALK...PIERCE FERRY AND ANTARES ROADS...MEADVIEW...
  BAR TEN RANCH...GRAND CANYON RANCH...SOUTH COVE AND DOLAN SPRINGS.

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 3617 11313 3618 11316 3616 11319 3609 11323
      3609 11332 3605 11335 3599 11334 3597 11332
      3591 11334 3554 11387 3574 11440 3603 11417
      3603 11415 3607 11413 3655 11374 3621 11305
TIME...MOT...LOC 2345Z 230DEG 60KT 3593 11398 

$$

JH
2 follow-up statements
643 
WWUS55 KVEF 230007
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
507 PM MST THU SEP 22 2016

AZC015-230030-
/O.CON.KVEF.SV.W.0091.000000T0000Z-160923T0030Z/
MOHAVE AZ-
507 PM MST THU SEP 22 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MST
FOR CENTRAL MOHAVE COUNTY...

AT 507 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED 15 MILES NORTH OF GRAND CANYON SKYWALK...
OR 42 MILES SOUTHEAST OF MESQUITE...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
GRAND CANYON SKYWALK...PIERCE FERRY AND ANTARES ROADS...MEADVIEW...
BAR TEN RANCH...GRAND CANYON RANCH...SOUTH COVE AND DOLAN SPRINGS.

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 3617 11313 3618 11316 3616 11319 3609 11323
      3609 11332 3605 11335 3599 11334 3597 11332
      3591 11334 3554 11387 3574 11440 3603 11417
      3603 11415 3607 11413 3655 11374 3621 11305
TIME...MOT...LOC 0007Z 223DEG 58KT 3623 11378 

$$

JH
141 
WWUS55 KVEF 230022
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
522 PM MST THU SEP 22 2016

AZC015-230032-
/O.EXP.KVEF.SV.W.0091.000000T0000Z-160923T0030Z/
MOHAVE AZ-
522 PM MST THU SEP 22 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MOHAVE COUNTY WILL
EXPIRE AT 530 PM MST...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3617 11313 3618 11316 3616 11319 3609 11323
      3609 11332 3605 11335 3599 11334 3597 11332
      3591 11334 3554 11387 3574 11440 3603 11417
      3603 11415 3607 11413 3655 11374 3621 11305
TIME...MOT...LOC 0021Z 230DEG 60KT 3623 11378 

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 5:21 AM MSTAreal Flood AdvisoryVEFMohave3 hr
Sep 22, 6:28 AM MSTFlash Flood WarningVEFMohave3 hr
Sep 22, 2:45 PM MSTSevere Thunderstorm WarningVEFMohave45 min
Sep 22, 3:25 PM MSTSevere Thunderstorm WarningVEFMohave65 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2016Every severe thunderstorm warning in 2016

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.