Tornado Warning 1, NWS Las Vegas, NV

140 
WWUS55 KVEF 220008
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
508 PM PDT Sun Aug 21 2022

AZC015-NVC003-017-220015-
/O.CON.KVEF.TO.W.0001.000000T0000Z-220822T0015Z/
Mohave AZ-Lincoln NV-Clark NV-
508 PM PDT Sun Aug 21 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM PDT/515 PM MST/
FOR NORTHERN MOHAVE...SOUTHEASTERN LINCOLN AND NORTHEASTERN CLARK
COUNTIES...
    
At 506 PM PDT/506 PM MST/, a severe thunderstorm capable of 
producing a tornado was located just west of Mesquite, and is moving 
south at 10 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Mesquite and Bunkerville. 

This includes Interstate 15 in Nevada between mile markers 104 and
120.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3675 11449 3704 11430 3704 11406 3700 11405
      3694 11405 3677 11406
TIME...MOT...LOC 0006Z 008DEG 28KT 3683 11418 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

JS

597 
WWUS55 KVEF 220026
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
526 PM PDT Sun Aug 21 2022

AZC015-NVC003-017-220033-
/O.EXP.KVEF.TO.W.0001.000000T0000Z-220822T0015Z/
Mohave AZ-Lincoln NV-Clark NV-
526 PM PDT Sun Aug 21 2022

...THE TORNADO WARNING FOR NORTHERN MOHAVE...SOUTHEASTERN LINCOLN AND
NORTHEASTERN CLARK COUNTIES HAS EXPIRED...
    
The tornado threat has diminished and the Tornado Warning has 
expired. However, large hail and damaging winds remain likely.  

Remember, a Severe Thunderstorm Warning still remains in effect for 
Southeast Lincoln, Northeast Clark, and Northwest Mohave County 
until 6 PM PDT, 6 PM MST.

LAT...LON 3675 11449 3704 11430 3704 11406 3700 11405
      3694 11405 3677 11406
TIME...MOT...LOC 0023Z 008DEG 28KT 3711 11409 

$$

JS

Area Forecast Discussion
National Weather Service Las Vegas NV
145 PM PDT Sun Aug 21 2022

.SYNOPSIS...Isolated showers and thunderstorms will be possible in
the eastern portions of the forecast area this afternoon and
evening. High pressure will move into and over the region,
ushering in warmer temperatures along with a brief reprieve from
storms as they become isolated in nature. This brief reprieve is
expected to last through Tuesday. Moisture and convective activity
will return in the middle of the week.

&&

.SHORT TERM...through Tuesday.

Another round of isolated showers and thunderstorms will be possible
again this afternoon and evening. The areas most likely to see these
storms are Mohave, Clark, and Lincoln Counties. The latest 850 mb
analysis shows a sharp dewpoint gradient extending from the western
portions of Clark and Lincoln Counties down across the Mojave
Preserve in San Bernardino County. This gradient is expected to
slowly shift to the east over the course of the afternoon and
evening. The dry air aloft behind this gradient will have the
potential to limit convective activity over the western portions of
Clark and Lincoln Counties this afternoon and evening. For the
storms that do end up developing, the primary hazards will be heavy
rain, frequent lightning, and strong gusty winds.

Persistent northwesterly flow aloft will continue to push moisture
eastward on Monday and Tuesday as an upper-level ridge moves over
the area. With the eastward displacement of the deepest moisture to
our east, we see PoPs decrease through early next week. While PoPs
will decrease, 1" precipitable water values will linger in the
southern portions of the forecast area, resulting in chances for
isolated afternoon showers and thunderstorms in Mohave County and
the higher terrain of Clark and eastern San Bernardino Counties.
While the moisture decreases, we will see temperatures gradually
increase to near seasonal values by Tuesday.

.LONG TERM...Wednesday through Sunday.

By Wednesday the ridge will have moved over the Four-Corners Region,
resulting more southerly flow aloft. This will allow for deep
moisture to return to the region. Long-range models show 1.25"-1.75"
PWats moving up the Colorado River Valley into Mohave County,
southeastern Clark County and eastern San Bernardino County. The
current forecast reflects this increase in moisture with slightly
cooler temperatures and more widespread PoPs on Wednesday and
Thursday.

Forecast uncertainty increases beyond Thursday as we prepare to head
into the weekend. Long term guidance shows a potential trough moving
through along the US-Canadian border resulting in the flattening and
westward displacement of the Four-Corner's ridge. Should this happen
it could potentially result in another brief lull in convective
activity as the deepest moisture is pushed out of the area. However,
since this occurs at the end of the forecast period and there are
discrepancies between ensemble members, confidence in the exact
details is low.

&&

.AVIATION...For Harry Reid...East-southeast winds 5-8KTS will
persist through the afternoon. Isolated thunderstorms developing
over the mountains to the north of Las Vegas will likely move across
Lake Mead early this evening. Outflow will likely reach the terminal
and result in northeast or east winds temporarily gusting to at
least to 20KTS 01Z-04Z. Isolated storms in the Mormon Mesa and Peach
Springs corridors should dissipate by 06Z. Winds are expected to
become light S-SW after 05Z and continue overnight and become light
and variable early Monday morning under a mostly clear sky. Isolated
storms will still possible over the mountains Monday afternoon,
but will not likely create impacts in the terminal area.

For the rest of southern Nevada, northwest Arizona and southeast
California...Isolated thunderstorms will move toward the southeast
over parts of southern Nevada and northwest Arizona this afternoon
and evening with the potential for strong outflow winds which may
impact IFP and EED in the Colorado River Valley 03Z-06Z this
evening. Storms should dissipate after 06Z. Most of southeast
California will be free of storms with winds generally less than
12KTS. Winds will be fairly light under mostly clear skies late
tonight through Monday morning. Thunderstorms will be more isolated
Monday afternoon over southern Nevada and northwest Arizona.

&&

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.

&&

DISCUSSION...Stessman
AVIATION...Adair

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