Severe Thunderstorm Warning 48, NWS Las Vegas, NV

615 
WWUS55 KVEF 180045
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
545 PM PDT Wed Aug 17 2022

AZC015-CAC071-NVC003-180115-
/O.CON.KVEF.SV.W.0048.000000T0000Z-220818T0115Z/
Mohave AZ-San Bernardino CA-Clark NV-
545 PM PDT Wed Aug 17 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM
PDT/615 PM MST/ FOR SOUTHWESTERN MOHAVE...EAST CENTRAL SAN BERNARDINO
AND SOUTH CENTRAL CLARK COUNTIES...

At 543 PM PDT/543 PM MST/, a severe thunderstorm was located near
Kingman, moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs and trees. Wind gusts over 60 mph 
         have been reported at Needles.

Locations impacted include...
Bullhead City, Kingman, Laughlin, Topock, Yucca, Katherine Landing,
Needles, Wild Cow Campground, Oatman, Mojave Ranch Estates, Mohave
Valley, Big Bend Rec Area, Golden Valley, Highway 95 And I-40,
Mesquite Creek, Dw Ranch Road, New Kingman-Butler, Arizona Village,
Hualapai Mountain Park and Willow Valley.

This includes the following highways...
 Interstate 40 in Arizona between mile markers 0 and 8, and between
mile markers 18 and 63.
 Interstate 40 in California between mile markers 131 and 155.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3461 11481 3528 11478 3542 11390 3488 11375
TIME...MOT...LOC 0043Z 266DEG 23KT 3515 11409 

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

$$

DB

468 
WWUS55 KVEF 180107
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
607 PM PDT Wed Aug 17 2022

AZC015-CAC071-NVC003-180117-
/O.EXP.KVEF.SV.W.0048.000000T0000Z-220818T0115Z/
Mohave AZ-San Bernardino CA-Clark NV-
607 PM PDT Wed Aug 17 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MOHAVE...EAST
CENTRAL SAN BERNARDINO AND SOUTH CENTRAL CLARK COUNTIES WILL EXPIRE
AT 615 PM PDT/615 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
winds are still possible with this thunderstorm.

LAT...LON 3461 11481 3528 11478 3542 11390 3488 11375
TIME...MOT...LOC 0107Z 266DEG 23KT 3516 11397 

$$

DB

Area Forecast Discussion
National Weather Service Las Vegas NV
142 PM PDT Wed Aug 17 2022

.SYNOPSIS...Thunderstorm chances will continue through Saturday
before high pressure building in from the Pacific brings a temporary
break Sunday through Tuesday. Locally heavy rain will be possible
with thunderstorms, with the greatest risk in and east of Mohave
County. Temperatures will hover slightly below normal, more so in
areas which see the most clouds and rain.
&&

.SHORT TERM...through tonight. Early afternoon satellite loop showed
scattered thunderstorms bubbling near and southeast of I-15, with
shallower cumulus farther north and west. Surface obs showed light
winds away from thunderstorms, and temperatures a few degrees higher
than 24 hours ago. The main concerns with thunderstorms this
afternoon and evening are heavy rain/flash flooding and strong
downburst winds. A tongue of precipitable water at or above 1.5
inches which will fuel heavy rain potential was located up the
Colorado River Valley, including eastern San Bernardino, western
Mohave, and southern Clark counties. Drier air above the deeper
moisture, as evidenced by 6.95 um water vapor imagery, will be
available for entrainment into taller updrafts, fueling downburst
wind potential. High resolution models are showing potential for
thunderstorms over the southern Great Basin to persist through the
evening and overnight, where strong winds will be more of a threat
than heavy rain.

.LONG TERM...Thursday through the Weekend.
The focus of the long term is the remnants of the tropical system
that impacted the Texas Gulf Coast a few days ago. The
aforementioned Pacific trough will shift northeast and EC/GEFS
means indicate a broad area of high pressure setting up off the
coast. This would serve to effectively block the tropical moisture
from progressing farther west and into the Pacific, but instead
halt its motion over southern Arizona and set the stage for a
multiple periods of heavy rainfall over the southern half of the
state, from Thursday night into Sunday. That high pressure over
the Pacific may continue to build into the weekend and shift
slowly eastward, when it does, the troughing over Arizona deforms
and stretches out, lessening the focused lifting over southern
Arizona but distributing vort maxes across much of the state. This
should serve to bring widespread heavy rainfall across much of the
state, including Mohave County, and perhaps as far west as the
Mojave Preserve and the CRV. As of now, GEFS/EC/GEM agree in
keeping the heaviest QPF along and south of the I-40 corridor, but
this would put many of the hardest hit areas of Mohave County in
the area of concern for further flash flooding impacts such as
Golden Valley, Kingman, and the Hualapai Mountains.

There is still some uncertainty however, as the ridge could build
in quicker and push the moisture swath farther east per some of
the minority clusters. There does appear to be a pretty stark
PoP/QPF gradient as a result of this ridge building in, which is
currently keeps much of Inyo, Esmeralda, Nye, and western San
Bernardino more or less dry. But if the forecast trends wetter or
even maintains its current expectations, then would think that a
FF Watch again for at least Mohave looks like a safe bet for
Friday and Saturday.
&&

.AVIATION...For Harry Reid...Scattered thunderstorms are expected
once again through this afternoon and into the early evening mainly
over the higher terrain surrounding the Las Vegas Valley. While
there is a slight chance that storms could directly affect the
terminal late this afternoon and early evening, a more likely
scenario is for gusty winds from outflows to move through the area
this evening, and this is included in the TAF. Outside of
thunderstorm activity today, winds should be light with skies SCT
AOA 12kft. Additional thunderstorm activity is expected on Thursday,
possibly starting earlier in the day near 18Z. Again, it looks like
most will remain over the higher terrain, but can rule out a storm
developing in the valley.

For the rest of southern Nevada, northwest Arizona and southeast
California...Scattered thunderstorms are expected area-wide once
again today and into this evening. Storms are expected to develop
over the higher terrain surrounding KBIH by mid-afternoon, possibly
directly affecting the field after 22Z.  Storms will be more
scattered in nature near KDAG with the activity expected mainly
during the late afternoon or early evening.  The Lower Colorado
River Valley sites will see the best chance of storms during the
evening hours. Outside of thunderstorm activity, light winds
favoring typical diurnal trends are expected along with skies SCT
AOA 12kft. Outside of any outflow boundary influences overnight,
winds will remain light. Another day of scattered mainly afternoon
and evening thunderstorms expected Thursday potentially affecting
all TAF sites.
&&

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

SHORT TERM...Morgan
LONG TERM...TB3
AVIATION...Gorelow

For more forecast information...see us on our webpage:
https://weather.gov/lasvegas or follow us on Facebook and Twitter

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
501 PM PDT WED AUG 17 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0406 PM     HEAVY RAIN       13 W NEEDLES            34.86N 114.85W
08/17/2022  U1.50 INCH       SAN BERNARDINO     CA   LAW ENFORCEMENT

            HEAVY RAIN CAUSED A SEMI TO SPIN OUT INTO
            THE CENTER DIVIDE.

&&

MS