Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS Las Vegas, NV

August 15, 2021Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 15, 2021, 3:44 PM MST for Mohave County, Arizona. It was in force for 61 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
Aug 15, 2021, 3:44 PM MST (22:44 UTC)
Expired
Aug 15, 2021, 4:45 PM MST
In force
61 min
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 157 km from the middle of the area, began a volume at 22:44 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.7 hours before the alert went out and 152 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 2021-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2021-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
9 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
2026 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

561 
WUUS55 KVEF 152244
SVRVEF
AZC015-152345-
/O.NEW.KVEF.SV.W.0066.210815T2244Z-210815T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
344 PM MST Sun Aug 15 2021

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  South central Mohave County in northwestern Arizona...

* Until 445 PM MST.

* At 343 PM MST, a severe thunderstorm was located 23 miles south of
  Diamond M Ranch, or 30 miles northeast of Wikieup, moving southwest
  at 10 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Diamond M Ranch.

This includes Interstate 40 in Arizona between mile markers 78 and
93.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3462 11338 3507 11364 3535 11354 3530 11333
      3468 11333
TIME...MOT...LOC 2243Z 029DEG 7KT 3498 11321 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CP
2 follow-up statements
561 
WWUS55 KVEF 152316
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
416 PM MST Sun Aug 15 2021

AZC015-152345-
/O.CON.KVEF.SV.W.0066.000000T0000Z-210815T2345Z/
Mohave AZ-
416 PM MST Sun Aug 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM MST
FOR SOUTH CENTRAL MOHAVE COUNTY...

At 415 PM MST, a severe thunderstorm was located 17 miles northeast
of Wikieup, moving southwest at 20 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Diamond M Ranch.

This includes Interstate 40 in Arizona between mile markers 78 and
93.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3462 11338 3507 11364 3535 11354 3530 11333
      3468 11333
TIME...MOT...LOC 2315Z 058DEG 18KT 3489 11342 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$
CP
480 
WWUS55 KVEF 152337
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
437 PM MST Sun Aug 15 2021

AZC015-152347-
/O.EXP.KVEF.SV.W.0066.000000T0000Z-210815T2345Z/
Mohave AZ-
437 PM MST Sun Aug 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MOHAVE COUNTY
WILL EXPIRE AT 445 PM MST...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will 
be allowed to expire.  However gusty winds up to 50 mph are still 
possible with this thunderstorm.

LAT...LON 3462 11338 3507 11364 3535 11354 3530 11333
      3468 11333
TIME...MOT...LOC 2337Z 029DEG 7KT 3485 11344 

$$
CP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 5:24 PM MSTSevere Thunderstorm WarningVEFMohave51 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.