Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 65, NWS Las Vegas, NV

August 14, 2021Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 14, 2021, 5:24 PM MST for Mohave County, Arizona. It was in force for 51 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: Aug 14, 2021, 5:24 PM MST (00:24 UTC)
Expired: Aug 14, 2021, 6:15 PM MST
In force: 51 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Mohave County, AZ

The radar

The Cedar City radar (KICX), 85 km from the middle of the area, began a volume at 00:27 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
Aug 14, 5:52 PM MST	TSTM WND GST 60	21 N Mt. Trumbull, AZ	PEAK WIND GUST 60 MPH MEASURED BY HURRICANE RAWS. TIME ESTIMATED FROM RADAR AS STORM PASSED STATION.

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

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.4 hours before the alert went out and 215 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: 12 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2567 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

227 
WUUS55 KVEF 150024
SVRVEF
AZC015-150115-
/O.NEW.KVEF.SV.W.0065.210815T0024Z-210815T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
524 PM MST Sat Aug 14 2021

The National Weather Service in Las Vegas has issued a

* Severe Thunderstorm Warning for...
  Northeastern Mohave County in northwestern Arizona...

* Until 615 PM MST.

* At 523 PM MST, a severe thunderstorm was located 8 miles southwest
  of Colorado City, moving south at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs and trees.

* This severe thunderstorm will remain over mainly rural areas of
  northeastern Mohave County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3700 11318 3696 11276 3656 11279 3667 11326
      3691 11345
TIME...MOT...LOC 0023Z 008DEG 10KT 3688 11306 

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

$$
CP

2 follow-up statements

925 
WWUS55 KVEF 150044
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
544 PM MST Sat Aug 14 2021

AZC015-150115-
/O.CON.KVEF.SV.W.0065.000000T0000Z-210815T0115Z/
Mohave AZ-
544 PM MST Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MST
FOR NORTHEASTERN MOHAVE COUNTY...

At 542 PM MST, a severe thunderstorm was located 17 miles southwest
of Colorado City, moving southwest at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs and trees.

This severe thunderstorm will remain over mainly rural areas of
northeastern Mohave County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3700 11318 3696 11276 3656 11279 3667 11326
      3691 11345
TIME...MOT...LOC 0042Z 033DEG 21KT 3679 11316 

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

$$

CP

405 
WWUS55 KVEF 150108
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
608 PM MST Sat Aug 14 2021

AZC015-150117-
/O.EXP.KVEF.SV.W.0065.000000T0000Z-210815T0115Z/
Mohave AZ-
608 PM MST Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MOHAVE COUNTY
WILL EXPIRE AT 615 PM MST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 3700 11318 3696 11276 3656 11279 3667 11326
      3691 11345
TIME...MOT...LOC 0107Z 008DEG 10KT 3673 11317 

$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 3:44 PM MST	Severe Thunderstorm Warning	VEF	Mohave	61 min

Nearby

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.