Alert archive / Nevada / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 44, NWS Las Vegas, NV

July 25, 2021Clark County, Lincoln County, Nevada; Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 25, 2021, 7:57 PM PDT for Clark County, Lincoln County, Nevada; Mohave County, Arizona. It was in force for 63 min. 6 reports 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 25, 2021, 7:57 PM PDT (02:57 UTC)
Expired: Jul 25, 2021, 9:00 PM PDT
In force: 63 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 Las Vegas radar (KESX), 54 km from the middle of the area, began a volume at 02:57 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 25, 8:10 PM PDT	TSTM WND GST 61	4 N Nellis Afb, NV	WIND GUST OF 61 MPH REPORTED AT UNION PACIFIC RAILROAD MESOWEST SENSOR IN DIKE NEVADA.
Jul 25, 8:23 PM PDT	TSTM WND GST 64	3 Nw North Las Vegas, NV	GUST OF 64 MEASURED FROM A THUNDERSTORM IN NORTH LAS VEGAS. DATA COURTESY OF EARTH NETWORKS.
Jul 25, 8:27 PM PDT	TSTM WND GST 68	North Las Vegas Airport, NV	NORTH LAS VEGAS AIRPORT REPORTED A GUST OF 68 MPH AT 2027 FROM A THUNDERSTORM.
Jul 25, 8:38 PM PDT	TSTM WND DMG	3 Ese North Las Vegas, NV	POWER OUTAGE REPORTED IN EAST LAS VEGAS DUE TO THUNDERSTORM RELATED WIND GUSTS VIA SOCIAL MEDIA.
Jul 25, 9:03 PM PDT	TSTM WND GST 62	Henderson Executive Air, NV	HENDERSON EXECUTIVE AIRPORT GUSTED TO 62 MPH AT 2103 FROM THUNDERSTORMS.
Jul 25, 9:03 PM PDT	TSTM WND GST 62	Henderson Executive Air, NV	WIND GUST OF 62 MPH REPORTED AT HENDERSON AIRPORT.

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, 3.0 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: 707 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 2729 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

682 
WUUS55 KVEF 260257
SVRVEF
AZC015-NVC003-017-260400-
/O.NEW.KVEF.SV.W.0044.210726T0257Z-210726T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
757 PM PDT Sun Jul 25 2021

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  West central Mohave County in northwestern Arizona...
  South central Lincoln County in south central Nevada...
  Northern Clark County in southern Nevada...

* Until 900 PM PDT/900 PM MST/.

* At 757 PM PDT/757 PM MST/, severe thunderstorms were located along
  a line extending from 18 miles north of The Motor Speedway to 7
  miles southwest of Echo Bay Campground to Meadview, moving south at
  20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs and trees.

* Locations impacted include...
  Las Vegas, Henderson, North Las Vegas, Boulder City, Rainbow
  Canyon, Summerlin, Nellis AFB, The Motor Speedway, Red Rock Canyon,
  Green Valley, Spring Mountains, Paradise, Lone Mountain, Anthem,
  Mountains Edge, The Strip, Blue Diamond, Downtown Las Vegas, East
  Las Vegas and Sam Boyd Stadium.

This includes Interstate 15 in Nevada between mile markers 16 and 76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

If on or near Lake Mead, get away from the water and move indoors or 
inside a vehicle. Remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 3658 11577 3615 11564 3583 11543 3579 11494
      3575 11457 3575 11397 3610 11402 3631 11448
      3695 11532
TIME...MOT...LOC 0257Z 021DEG 17KT 3655 11503 3624 11452 3601 11406 

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

BKP

2 follow-up statements

236 
WWUS55 KVEF 260323
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
823 PM PDT Sun Jul 25 2021

AZC015-NVC003-017-260400-
/O.CON.KVEF.SV.W.0044.000000T0000Z-210726T0400Z/
Mohave AZ-Lincoln NV-Clark NV-
823 PM PDT Sun Jul 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM
PDT/900 PM MST/ FOR WEST CENTRAL MOHAVE...SOUTHWESTERN LINCOLN AND
NORTHERN CLARK COUNTIES...

At 821 PM PDT/821 PM MST/, severe thunderstorms were located along a
line extending from 10 miles north of Centennial Hills to near Hoover
Dam to near Grand Canyon Ranch, moving southwest at 30 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Las Vegas, Henderson, North Las Vegas, Boulder City, Rainbow Canyon,
Summerlin, Nellis AFB, The Motor Speedway, Red Rock Canyon, Green
Valley, Spring Mountains, Paradise, Lone Mountain, Anthem, Mountains
Edge, The Strip, Blue Diamond, Downtown Las Vegas, East Las Vegas and
Sam Boyd Stadium.

This includes Interstate 15 in Nevada between mile markers 16 and 70.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms have the potential of 
producing producing widespread wind damage across the Las Vegas 
Valley. SEEK SHELTER NOW inside a sturdy structure and stay away 
from windows.
 
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.

If on or near Lake Mead, get away from the water and move indoors or 
inside a vehicle. remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 3615 11564 3658 11577 3695 11532 3621 11458
      3598 11401 3575 11397 3575 11457 3579 11494
      3583 11543
TIME...MOT...LOC 0321Z 033DEG 27KT 3644 11529 3607 11468 3586 11408 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

BKP

151 
WWUS55 KVEF 260400
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
900 PM PDT Sun Jul 25 2021

AZC015-NVC003-017-260409-
/O.EXP.KVEF.SV.W.0044.000000T0000Z-210726T0400Z/
Mohave AZ-Lincoln NV-Clark NV-
900 PM PDT Sun Jul 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MOHAVE...
SOUTHWESTERN LINCOLN AND NORTHERN CLARK COUNTIES WILL EXPIRE AT 900
PM PDT/900 PM MST/...
    
The storms which prompted the warning has continued to surge 
southwest across Clark County. Therefore, the warning will be 
allowed to expire.  However gusty winds are still possible with 
these thunderstorms.

LAT...LON 3615 11564 3658 11577 3695 11532 3621 11458
      3598 11401 3575 11397 3575 11457 3579 11494
      3583 11543
TIME...MOT...LOC 0359Z 021DEG 17KT 3627 11537 3590 11476 3569 11416 

$$

BKP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 5:12 PM PDT	Dust Storm Warning	VEF	Clark	63 min
Jul 25, 5:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Lincoln	3 hr
Jul 25, 6:01 PM PDT	Severe Thunderstorm Warning	VEF	Clark	59 min
Jul 25, 6:06 PM PDT	Severe Thunderstorm Warning	VEF	Lincoln	39 min
Jul 25, 7:08 PM PDT	Severe Thunderstorm Warning	VEF	Clark	52 min
Jul 25, 8:09 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	3 hr
Jul 25, 8:59 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	3 hr
Jul 25, 8:59 PM PDT	Severe Thunderstorm Warning	VEF	Clark, Nye	61 min
Jul 25, 9:55 PM PDT	Severe Thunderstorm Warning	VEF	Clark, Nye	50 min
Jul 26, 10:20 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	3 hr
Jul 26, 10:44 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	3 hr
Jul 26, 11:32 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark, Nye	4 hr
Jul 26, 12:29 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Nye	3 hr
Jul 26, 12:40 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Nye	3 hr
Jul 26, 1:28 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Lincoln	3 hr
Jul 26, 2:05 PM PDT	Severe Thunderstorm Warning	VEF	Lincoln	40 min
Jul 26, 4:30 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Lincoln	2 hr
Jul 26, 4:34 PM PDT	Severe Thunderstorm Warning	VEF	Lincoln	41 min
Jul 25, 5:04 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Mohave	5 hr
Jul 25, 5:06 PM PDT	Severe Thunderstorm Warning	VEF	Mohave	54 min
Jul 25, 10:26 PM PDT	Areal Flood Warning	VEF	Mohave	8 hr
Jul 26, 1:51 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr

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.