Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 68, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 29, 2021, 5:42 PM MST for Mohave County, Arizona. It was in force for 48 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 29, 2021, 5:42 PM MST (00:42 UTC)
- Expired
- Aug 29, 2021, 6:30 PM MST
- In force
- 48 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 Las Vegas radar (KESX), 121 km from the middle of the area, began a volume at 00:45 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, 0.7 hours before the alert went out and 214 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.
- Mixed-layer CAPE
- 421 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 3881 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
827
WUUS55 KVEF 300042
SVRVEF
AZC015-300130-
/O.NEW.KVEF.SV.W.0068.210830T0042Z-210830T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
542 PM MST Sun Aug 29 2021
The National Weather Service in Las Vegas has issued a
* Severe Thunderstorm Warning for...
Southwestern Mohave County in northwestern Arizona...
* Until 630 PM MST.
* At 541 PM MST, a severe thunderstorm was located 9 miles east of
Topock, moving northeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs and trees.
* Locations impacted include...
Yucca and Topock.
This includes Interstate 40 in Arizona between mile markers 1 and 25.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3459 11444 3461 11443 3462 11444 3464 11444
3466 11446 3467 11445 3471 11447 3477 11456
3481 11457 3496 11421 3466 11400 3458 11442
TIME...MOT...LOC 0041Z 235DEG 14KT 3476 11430
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BKP1 follow-up statement
245
WWUS55 KVEF 300125
SVSVEF
Severe Weather Statement
National Weather Service Las Vegas NV
625 PM MST Sun Aug 29 2021
AZC015-300135-
/O.EXP.KVEF.SV.W.0068.000000T0000Z-210830T0130Z/
Mohave AZ-
625 PM MST Sun Aug 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MOHAVE COUNTY
WILL EXPIRE AT 630 PM MST...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3459 11444 3461 11443 3462 11444 3464 11444
3466 11446 3467 11445 3471 11447 3477 11456
3481 11457 3496 11421 3466 11400 3458 11442
TIME...MOT...LOC 0125Z 235DEG 14KT 3485 11414
$$
BKPThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:28 AM MST | Flash Flood Watch | VEF | Mohave | 59 hr |
| Aug 30, 4:30 PM MST | Flash Flood Warning | VEF | Mohave | 100 min |
| Aug 30, 4:35 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
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.