Alert archive / Nevada / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 30, NWS Las Vegas, NV

July 23, 2021Mohave County, Arizona; Clark County, Lincoln County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 23, 2021, 5:52 PM MST for Mohave County, Arizona; Clark County, Lincoln County, Nevada. It was in force for 53 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 23, 2021, 5:52 PM MST (00:52 UTC)
Expired: Jul 23, 2021, 6:45 PM MST
In force: 53 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Mohave County, AZ, Clark County, NV, Lincoln County, NV

The radar

The Cedar City radar (KICX), 139 km from the middle of the area, began a volume at 00:53 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.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 6:41 PM MST	TSTM WND GST 75	12 Sw Elgin, NV	75MPH GUST REPORTED AT THE KANE SPRINGS RAWS SITE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Las Vegas, NV (KVEF), launched 00:00Z, 0.9 hours before the alert went out and 135 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: 139 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 3163 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

091 
WUUS55 KVEF 240052
SVRVEF
AZC015-NVC003-017-240145-
/O.NEW.KVEF.SV.W.0030.210724T0052Z-210724T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
552 PM PDT Fri Jul 23 2021

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  North central Mohave County in northwestern Arizona...
  Southeastern Lincoln County in south central Nevada...
  Northeastern Clark County in southern Nevada...

* Until 645 PM PDT/645 PM MST/.

* At 550 PM PDT/550 PM MST/, outflow from thunderstorms were along a 
  line extending from 16 miles southwest of Gunlock State Park to 26 
  miles southwest of Cabin Pines Campground, moving south at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs and trees.

* Locations impacted include...
  Mesquite, Beaver Dam, Littlefield, Moapa Town, Moapa Valley,
  Bunkerville and Carp.

This includes the following highways... 
Interstate 15 in Arizona between mile markers 0 and 2, and 
between mile markers 4 and 10. Interstate 15 in Nevada 
between mile markers 90 and 120.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Las Vegas.

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3665 11386 3665 11484 3726 11475 3726 11405
      3700 11405 3700 11391
TIME...MOT...LOC 0050Z 000DEG 33KT 3716 11405 3716 11467 

HAIL...<.75IN
WIND...60MPH
 
$$

TB3

1 follow-up statement

988 
WWUS55 KVEF 240126
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
626 PM PDT Fri Jul 23 2021

AZC015-NVC003-017-240145-
/O.CON.KVEF.SV.W.0030.000000T0000Z-210724T0145Z/
Mohave AZ-Lincoln NV-Clark NV-
626 PM PDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM
PDT/645 PM MST/ FOR NORTH CENTRAL MOHAVE...SOUTHEASTERN LINCOLN AND
NORTHEASTERN CLARK COUNTIES...

At 623 PM PDT/623 PM MST/, a cluster of thunderstorms generating 
strong outflow winds were located 5 miles north of Mesquite, moving 
south at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs and trees.

Locations impacted include...
Mesquite, Beaver Dam, Littlefield, Moapa Town, Moapa Valley,
Bunkerville and Carp.

This includes the following highways...
Interstate 15 in Arizona between mile markers 0 and 2, and between
mile markers 4 and 10. Interstate 15 in Nevada between mile markers 
90 and 120.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3665 11386 3665 11484 3726 11475 3726 11405
      3700 11405 3700 11391
TIME...MOT...LOC 0123Z 000DEG 33KT 3686 11405 3686 11467 

HAIL...<.75IN
WIND...60MPH
 
$$

TB3

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 7:11 PM MST	Severe Thunderstorm Warning	VEF	Mohave	49 min
Jul 23, 7:58 PM MST	Severe Thunderstorm Warning	VEF	Mohave	23 min
Jul 23, 9:52 PM MST	Severe Thunderstorm Warning	VEF	Mohave	29 min
Jul 23, 10:18 PM MST	Severe Thunderstorm Warning	VEF	Mohave	42 min
Jul 23, 11:58 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	2 hr
Jul 24, 1:13 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jul 24, 1:26 PM MST	Severe Thunderstorm Warning	VEF	Mohave	49 min
Jul 24, 3:18 PM MST	Severe Thunderstorm Warning	VEF	Mohave	57 min
Jul 24, 3:21 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	2 hr
Jul 24, 4:42 PM MST	Severe Thunderstorm Warning	VEF	Lincoln	48 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2021 Severe Thunderstorm Warnings in Arizona, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.