Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 21, NWS Las Vegas, NV

July 28, 2022Mohave County, Arizona; Clark County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 28, 2022, 9:41 PM MST for Mohave County, Arizona; Clark County, Nevada. It was in force for 79 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 28, 2022, 9:41 PM MST (04:41 UTC)
Expired: Jul 28, 2022, 11:00 PM MST
In force: 79 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

The radar

The Las Vegas radar (KESX), 52 km from the middle of the area, began a volume at 04:44 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 00:00Z, 4.7 hours before the alert went out and 68 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: 809 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 2621 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

910 
WUUS55 KVEF 290441
SVRVEF
AZC015-NVC003-290600-
/O.NEW.KVEF.SV.W.0021.220729T0441Z-220729T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
941 PM PDT Thu Jul 28 2022

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  Northwestern Mohave County in northwestern Arizona...
  Central Clark County in southern Nevada...

* Until 1100 PM PDT/1100 PM MST/.

* At 941 PM PDT/941 PM MST/, a severe thunderstorm was located near
  Callville Bay, or 10 miles east of Las Vegas Bay, moving southwest
  at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar and surface wind observation indicated.

  IMPACT...Expect damage to roofs and trees.

* Locations impacted include...
  Henderson, North Las Vegas, Boulder City, Las Vegas Bay, Lake Las
  Vegas, Nellis AFB, The Motor Speedway, East Las Vegas, Boulder
  Beach, Railroad Pass, Boulder Beach Campground, Las Vegas Bay
  Campground, Callville Bay, Hoover Dam, Callville Bay Campground,
  Temple Bar Campground, Lake Mead National Recreation Area, Willow
  Beach, Sunrise Mtn and Temple Bar.

This includes Interstate 15 in Nevada between mile markers 60 and 72.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3651 11488 3635 11458 3619 11439 3607 11423
      3563 11473 3583 11515 3593 11496 3617 11498
      3627 11511 3637 11515
TIME...MOT...LOC 0441Z 028DEG 24KT 3609 11467 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

VARIAN

2 follow-up statements

686 
WWUS55 KVEF 290514
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
1014 PM PDT Thu Jul 28 2022

AZC015-NVC003-290600-
/O.CON.KVEF.SV.W.0021.000000T0000Z-220729T0600Z/
Mohave AZ-Clark NV-
1014 PM PDT Thu Jul 28 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM
PDT/1100 PM MST/ FOR NORTHWESTERN MOHAVE AND CENTRAL CLARK
COUNTIES...

At 1013 PM PDT/1013 PM MST/, a severe thunderstorm was located near
Boulder City, moving southwest at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs and trees.

Locations impacted include...
Henderson, Boulder City, Las Vegas Bay, Lake Las Vegas, Boulder
Beach, Railroad Pass, Boulder Beach Campground, Las Vegas Bay
Campground, Callville Bay, Hoover Dam, Callville Bay Campground, Lake
Mead National Recreation Area and Willow Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3617 11482 3616 11470 3610 11447 3600 11432
      3563 11473 3583 11515 3593 11496 3615 11497
TIME...MOT...LOC 0513Z 028DEG 24KT 3590 11480 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

VARIAN

434 
WWUS55 KVEF 290557
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
1057 PM PDT Thu Jul 28 2022

AZC015-NVC003-290606-
/O.EXP.KVEF.SV.W.0021.000000T0000Z-220729T0600Z/
Mohave AZ-Clark NV-
1057 PM PDT Thu Jul 28 2022

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MOHAVE AND
CENTRAL CLARK COUNTIES WILL EXPIRE AT 1100 PM PDT/1100 PM MST/...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However heavy rain 
and gusty winds are still possible with this thunderstorm south of 
Boulder City and along Highway 95 toward Searchlight.

LAT...LON 3617 11482 3616 11470 3610 11447 3600 11432
      3563 11473 3583 11515 3593 11496 3615 11497
TIME...MOT...LOC 0556Z 028DEG 24KT 3565 11496 

$$

VARIAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 5:21 PM MST	Areal Flood Advisory	VEF	Mohave	3 hr
Jul 28, 5:46 PM MST	Severe Thunderstorm Warning	VEF	Mohave	44 min
Jul 28, 6:51 PM MST	Severe Thunderstorm Warning	VEF	Mohave	54 min
Jul 28, 7:27 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jul 28, 7:47 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jul 28, 10:18 PM MST	Severe Thunderstorm Warning	VEF	Mohave	57 min
Jul 28, 11:29 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	2 hr
Jul 29, 1:30 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jul 29, 2:39 PM MST	Areal Flood Advisory	VEF	Mohave	3 hr
Jul 29, 3:51 PM MST	Flash Flood Warning Considerable damage threat	VEF	Mohave	3 hr
Jul 28, 5:28 PM MST	Severe Thunderstorm Warning	VEF	Lincoln	62 min
Jul 28, 8:10 PM MST	Severe Thunderstorm Warning	VEF	Clark	80 min
Jul 28, 9:12 PM MST	Flash Flood Warning Considerable damage threat	VEF	Clark	93 min
Jul 28, 9:22 PM MST	Severe Thunderstorm Warning	VEF	Clark	53 min
Jul 28, 9:49 PM MST	Flash Flood Warning Considerable damage threat	VEF	Clark	116 min
Jul 28, 11:48 PM MST	Areal Flood Advisory	VEF	Clark	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2022 Severe Thunderstorm Warnings in Nevada, 2022 Every severe thunderstorm warning in 2022

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.