Alert archive / Nevada / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Las Vegas, NV

June 29, 2021Clark County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jun 29, 2021, 5:14 PM PDT for Clark County, Nevada. It was in force for 46 min. 2 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: Jun 29, 2021, 5:14 PM PDT (00:14 UTC)
Expired: Jun 29, 2021, 6:00 PM PDT
In force: 46 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Clark County, NV

The radar

The Las Vegas radar (KESX), 100 km from the middle of the area, began a volume at 00:17 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
Jun 29, 5:16 PM PDT	TSTM WND GST 72	4 E Moapa, NV	72MPH WIND GUSTS REPORTED BY NVDOT MPVNV MESONET SITE.
Jun 29, 5:40 PM PDT	TSTM WND GST 61	1 Nw Overton, NV	61 MPH WIND GUST ALONG WITH PEA SIZED HAIL REPORTED BY TRAINED WEATHER SPOTTER.

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, 0.2 hours before the alert went out and 88 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: 459 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 3098 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

208 
WUUS55 KVEF 300014
SVRVEF
NVC003-300100-
/O.NEW.KVEF.SV.W.0009.210630T0014Z-210630T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
514 PM PDT Tue Jun 29 2021

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  Northeastern Clark County in southern Nevada...

* Until 600 PM PDT.

* At 513 PM PDT, a severe thunderstorm was located near Moapa Town,
  moving southeast at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is possible. Expect wind damage 
           to roofs and trees. 

* Locations impacted include...
  Overton, Moapa Town, Moapa Valley, Valley Of Fire, Overton Beach
  and Logandale.

This includes Interstate 15 in Nevada between mile markers 79 and 97.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3667 11475 3675 11452 3646 11423 3627 11466
TIME...MOT...LOC 0013Z 322DEG 16KT 3662 11458 

HAIL...1.00IN
WIND...60MPH
 
$$

JS

2 follow-up statements

418 
WWUS55 KVEF 300038
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
538 PM PDT Tue Jun 29 2021

NVC003-300100-
/O.CON.KVEF.SV.W.0009.000000T0000Z-210630T0100Z/
Clark NV-
538 PM PDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR NORTHEASTERN CLARK COUNTY...

At 535 PM PDT, a severe thunderstorm was located over Overton, moving
southeast at 20 mph. A 72 mph wind gust was reported with this storm.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Overton, Moapa Town, Moapa Valley, Valley Of Fire, Overton Beach and
Logandale.

This includes Interstate 15 in Nevada between mile markers 79 and 97.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near the Overton Arm, 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 3667 11475 3675 11452 3646 11423 3627 11466
TIME...MOT...LOC 0035Z 322DEG 16KT 3654 11450 

HAIL...1.00IN
WIND...70MPH
 
$$

JS

250 
WWUS55 KVEF 300105
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
605 PM PDT Tue Jun 29 2021

NVC003-300114-
/O.EXP.KVEF.SV.W.0009.000000T0000Z-210630T0100Z/
Clark NV-
605 PM PDT Tue Jun 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLARK COUNTY HAS
EXPIRED...
                
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 has been allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

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

LAT...LON 3667 11475 3675 11452 3646 11423 3627 11466
TIME...MOT...LOC 0104Z 322DEG 16KT 3645 11441 

$$

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:21 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Clark	7 hr
Jun 30, 2:16 PM PDT	Areal Flood Advisory	VEF	Nye	3 hr
Jun 30, 3:30 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Lincoln, Nye	105 min
Jun 30, 4:03 PM PDT	Areal Flood Advisory	VEF	Lincoln	3 hr
Jun 30, 4:55 PM PDT	Severe Thunderstorm Warning	VEF	Esmeralda, Nye	48 min

Nearby

Severe Thunderstorm Warnings in Nevada, 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.