Alert archive / Nevada / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 57, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 12, 2021, 7:06 PM PDT for Clark County, Nevada. It was in force for 39 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 12, 2021, 7:06 PM PDT (02:06 UTC)
- Expired
- Aug 12, 2021, 7:45 PM PDT
- In force
- 39 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), 111 km from the middle of the area, began a volume at 02:04 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 12, 7:54 PM PDT | TSTM WND GST 67 | 15 Wnw Valley Of Fire S, NV |
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, 2.1 hours before the alert went out and 86 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
- 1235 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 2944 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
254
WUUS55 KVEF 130206
SVRVEF
NVC003-130245-
/O.NEW.KVEF.SV.W.0057.210813T0206Z-210813T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
706 PM PDT Thu Aug 12 2021
The National Weather Service in Las Vegas has issued a
* Severe Thunderstorm Warning for...
North central Clark County in southern Nevada...
* Until 745 PM PDT.
* At 705 PM PDT, a severe thunderstorm was located near Sr 168 Mile
Marker 21, or 10 miles west of Moapa Town, moving southeast at 25
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...
Moapa Town, Moapa Valley, Logandale and Sr 168 Mile Marker 21.
This includes Interstate 15 in Nevada between mile markers 71 and 96.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3662 11439 3640 11480 3675 11498 3685 11474
3684 11465
TIME...MOT...LOC 0205Z 334DEG 20KT 3674 11480
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Outler1 follow-up statement
056
WWUS55 KVEF 130229
SVSVEF
Severe Weather Statement
National Weather Service Las Vegas NV
729 PM PDT Thu Aug 12 2021
NVC003-130245-
/O.CON.KVEF.SV.W.0057.000000T0000Z-210813T0245Z/
Clark NV-
729 PM PDT Thu Aug 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM PDT
FOR NORTH CENTRAL CLARK COUNTY...
At 728 PM PDT, a severe thunderstorm was located 7 miles southwest
of Moapa Town, moving southeast at 25 mph. This storm was quickly
approaching interstate 15 between Moapa and Apex. Sudden strong
crosswinds and areas of blowing dust are likely.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs and trees.
Locations impacted include...
Moapa Town, Moapa Valley, Logandale and Sr 168 Mile Marker 21.
This includes Interstate 15 in Nevada between mile markers 71 and 96.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3662 11439 3640 11480 3675 11498 3685 11474
3684 11465
TIME...MOT...LOC 0228Z 334DEG 20KT 3662 11473
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
COThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 7:40 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 50 min |
| Aug 12, 7:46 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 12, 8:17 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 58 min |
| Aug 12, 8:42 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 12, 9:10 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 50 min |
| Aug 13, 2:37 AM PDT | Excessive Heat Watch | VEF | Clark, Nye | 12 hr |
| Aug 13, 2:18 PM PDT | Excessive Heat Warning | VEF | Clark, Nye | 3 days |
| Aug 13, 2:23 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 52 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.