Severe Thunderstorm Warning 8, NWS Las Vegas, NV

440 
WWUS55 KVEF 180312
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
812 PM PDT Fri Jul 17 2026

AZC015-CAC071-180330-
/O.CON.KVEF.SV.W.0008.000000T0000Z-260718T0330Z/
Mohave AZ-San Bernardino CA-
812 PM PDT Fri Jul 17 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM
PDT/830 PM MST/ FOR SOUTHWESTERN MOHAVE AND EAST CENTRAL SAN
BERNARDINO COUNTIES...

At 812 PM PDT/812 PM MST/, a severe thunderstorm was located near
Topock, moving southeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs and trees.

Locations impacted include...
Lake Havasu City, Highway 95 At Mile Marker 29, Topock, Needles,
Desert Hills, Arizona Village, and Mohave Valley.

This includes the following roads...
 Interstate 40 in Arizona between mile markers 0 and 10.
 Interstate 40 in California between mile markers 139 and 155.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

If on or near Lake Havasu, 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 3484 11481 3495 11445 3445 11410 3431 11470
TIME...MOT...LOC 0312Z 318DEG 16KT 3467 11450 

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

$$

Stessman

736 
WWUS55 KVEF 180321
SVSVEF

Severe Weather Statement
National Weather Service Las Vegas NV
821 PM PDT Fri Jul 17 2026

AZC015-CAC071-180330-
/O.EXP.KVEF.SV.W.0008.000000T0000Z-260718T0330Z/
Mohave AZ-San Bernardino CA-
821 PM PDT Fri Jul 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MOHAVE AND EAST
CENTRAL SAN BERNARDINO COUNTIES WILL EXPIRE AT 830 PM PDT/830 PM
MST/...

The storm which prompted the warning has weakened, and no longer
poses an immediate threat to life or property. Therefore, the warning
will be allowed to expire.

&&

LAT...LON 3484 11481 3495 11445 3445 11410 3431 11470
TIME...MOT...LOC 0320Z 338DEG 34KT 3460 11447 

$$

Stessman

Area Forecast Discussion
National Weather Service Las Vegas NV
424 PM PDT Fri Jul 17 2026

.KEY MESSAGES...

* Abundant moisture will remain over the Desert Southwest into
  next week, with daily rounds of monsoon thunderstorms.

* Seasonably hot temperatures will persist with unusually warm
  overnight lows due to moisture and cloud cover.

&&

.DISCUSSION...
An active stretch of monsoon days is expected as abundant
moisture resides over the Desert Southwest. This is apparent from
the most recent Upper Air soundings from Las Vegas, each showing
precipitable water values exceeding 1.6 inches. The most active
convective days currently appear to be today and Saturday. With
ensembles indicating some slight drying early next week, less
widespread activity can be expected, but the chance for storms
will persist through the end of next week. In fact, medium- range
ensembles indicate a weak inverted trough feature may result in a
period of greater shower and thunderstorm activity mid to late
next week, though confidence in the timing/placement of this
feature is very low. We will continue to monitor trends as the
time draws closer. Regardless, expect thunderstorms to largely be
terrain and outflow driven with little movement owing to very weak
mid-level steering flow. This will result in an increased risk
for localized flash flooding, especially given the high water
content in the atmosphere. Lightning and gusty winds will also
accompany any thunderstorm. Looking into the long range timeframe,
the pattern generally looks to continue favoring a monsoon
pattern with at least a chance for isolated thunderstorms into
next weekend. As it commonly the case, areas of Mohave and Lincoln
counties into southwestern Utah will generally be geographically
preferred for thunderstorms. Be especially mindful if you have any
outdoor activities planned over the next week or so as
thunderstorms will remain in the forecast.

Afternoon high temperatures will generally remain right around
climatological normals. However, given the potential for
increased overnight cloud cover and abundant atmospheric moisture,
the air will struggle to cool down overnight. This will result in
some elevated heat risk potential, especially in the hotter
spots, including the Colorado River Valley and Death Valley.
Remain hydrated and avoid being outdoors during the hottest time
of the afternoon.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast Package...
Convection south of the Las Vegas Valley should result in winds
shifting southerly between 2330Z and 0030Z.  While isolated
convection cannot be ruled out before 03Z, the probability of
occurrence has diminished for the terminal area.  If convection does
move into the valley, heavy rainfall, brief gusty winds, and CIGs of
6kft to 8kft AGL will be the main concerns. Winds will become light
and variable overnight, and light east winds are expected Saturday
morning. The chance of convection tomorrow will be low in the
valley, with the best chances being to the east.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...Away from convection,
light south to southeast winds will continue through this evening.
Breezy southeast winds will continue at KBIH, with gusts over 20
knots persisting through sunset. KDAG should see gusty west winds
develop around 00Z. Scattered thunderstorms remain possible this
evening across southern Nevada and Arizona. Any storms may produce
lightning, sudden gusty outflow winds, brief heavy rain, and CIGs
below 8kft. Confidence in thunderstorm chances remains low near the
Colorado River Valley, including KEED and KIFP, but isolated
convection can not be ruled out through 06Z. Outside of
precipitation, CIGs should remain AOA 12kft AGL. Drier conditions
are expected tomorrow, with typical wind patterns.

&&

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

&&

DISCUSSION...Austin
AVIATION...Planz

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