Alert archive / Nevada / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Las Vegas, NV

February 13, 2021Clark County, Nevada; Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Feb 13, 2021, 1:51 PM PST for Clark County, Nevada; Mohave County, Arizona. It was in force for 54 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: Feb 13, 2021, 1:51 PM PST (21:51 UTC)
Expired: Feb 13, 2021, 2:45 PM PST
In force: 54 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), 54 km from the middle of the area, began a volume at 21:53 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
Feb 13, 2:15 PM PST	TSTM WND GST 58	2 Ssw Boulder City, NV	REPORTED AT BOULDER CITY AIRPORT.

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 12:00Z, 9.9 hours before the alert went out and 95 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2112 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

085 
WUUS55 KVEF 132151
SVRVEF
AZC015-NVC003-132245-
/O.NEW.KVEF.SV.W.0002.210213T2151Z-210213T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Las Vegas NV
151 PM PST Sat Feb 13 2021

The National Weather Service in Las Vegas has issued a

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

* Until 245 PM PST/345 PM MST/.

* At 149 PM PST/249 PM MST/, a severe thunderstorm was located near 
  Las Vegas , moving southeast at 55 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, Overton, Lake Las Vegas,
  Moapa Valley, Echo Bay, Boulder Beach, Railroad Pass, Boulder Beach
  Campground, Las Vegas Bay Campground, Echo Bay Campground,
  Callville Bay, Meadview, Hoover Dam, Valley Of Fire, Callville Bay
  Campground, Lake Mead National Recreation Area, Temple Bar
  Campground and Overton 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. Move to safe shelter now!  Strong winds will 
occur well ahead of any lightning or thunder! 

&&

LAT...LON 3594 11505 3624 11479 3656 11448 3658 11406
      3622 11382 3580 11408 3578 11457 3577 11498
TIME...MOT...LOC 2149Z 240DEG 49KT 3617 11454 

HAIL...<.75IN
WIND...60MPH
 
$$

Outler

2 follow-up statements

975 
WWUS55 KVEF 132218
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
218 PM PST Sat Feb 13 2021

AZC015-NVC003-132245-
/O.CON.KVEF.SV.W.0002.000000T0000Z-210213T2245Z/
Mohave AZ-Clark NV-
218 PM PST Sat Feb 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM
PST/345 PM MST/ FOR NORTHWESTERN MOHAVE AND NORTHEASTERN CLARK
COUNTIES...

At 218 PM PST/318 PM MST/, a severe thunderstorm was located 9 miles
west of Temple Bar Campground, or 20 miles east of Boulder City,
moving southeast at 45 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, Overton, Lake Las Vegas,
Moapa Valley, Echo Bay, Boulder Beach, Railroad Pass, Boulder Beach
Campground, Las Vegas Bay Campground, Echo Bay Campground, Callville
Bay, Meadview, Hoover Dam, Valley Of Fire, Callville Bay Campground,
Lake Mead National Recreation Area, Temple Bar Campground and Overton
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 3594 11505 3624 11479 3656 11448 3658 11406
      3622 11382 3580 11408 3578 11457 3577 11498
TIME...MOT...LOC 2218Z 321DEG 38KT 3606 11450 

HAIL...<.75IN
WIND...60MPH
 
$$

Outler

440 
WWUS55 KVEF 132241
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
241 PM PST Sat Feb 13 2021

AZC015-NVC003-132251-
/O.EXP.KVEF.SV.W.0002.000000T0000Z-210213T2245Z/
Mohave AZ-Clark NV-
241 PM PST Sat Feb 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MOHAVE AND
NORTHEASTERN CLARK COUNTIES WILL EXPIRE AT 245 PM PST/345 PM MST/...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However, gusty 
north winds will remain likely through the evening and a wind 
advisory remains in effect through Sunday morning. 

LAT...LON 3594 11505 3624 11479 3656 11448 3658 11406
      3622 11382 3580 11408 3578 11457 3577 11498
TIME...MOT...LOC 2241Z 240DEG 49KT 3618 11424 

$$

Outler

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 13, 12:05 PM PST	Lake Wind Advisory	VEF		30 hr
Feb 13, 1:35 PM PST	Severe Thunderstorm Warning	VEF	Clark	40 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2021 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.