Flash Flood Warning 41, NWS Las Vegas, NV

615 
WGUS75 KVEF 170151
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
651 PM PDT Wed Sep 16 2026

AZC015-CAC071-170430-
/O.CON.KVEF.FF.W.0041.000000T0000Z-260917T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-San Bernardino CA-
651 PM PDT Wed Sep 16 2026 /651 PM MST Wed Sep 16 2026/

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM PDT /930 PM
MST/ THIS EVENING FOR SOUTH CENTRAL MOHAVE AND SAN BERNARDINO
COUNTIES...

At 651 PM PDT /651 PM MST/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area. Between 1 and 2 inches
of rain have fallen. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, urban
         areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Lake Havasu City, Parker Dam, Alamo Lake, Cattail Cove State Park,
  Black Meadow Landing Campground, Three Dunes Campground, Earp and
  Big River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3408 11447 3431 11446 3449 11426 3441 11349
      3430 11349 3431 11354 3423 11361 3421 11368
      3424 11373 3422 11384 3425 11385 3425 11401
      3429 11407 3430 11414 3426 11413 3426 11417
      3419 11423 3411 11442 3408 11444

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JCS

685 
WGUS75 KVEF 170325 RRA
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
825 PM PDT Wed Sep 16 2026

AZC015-CAC071-170430-
/O.CON.KVEF.FF.W.0041.000000T0000Z-260917T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-San Bernardino CA-
825 PM PDT Wed Sep 16 2026 /825 PM MST Wed Sep 16 2026/

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM PDT /930 PM
MST/ THIS EVENING FOR SOUTH CENTRAL MOHAVE AND SAN BERNARDINO
COUNTIES...

At 825 PM PDT /825 PM MST/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area. Between 1 and 2 inches
of rain have fallen. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, urban
         areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Lake Havasu City, Parker Dam, Alamo Lake, Cattail Cove State Park,
  Black Meadow Landing Campground, Three Dunes Campground, Earp and
  Big River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3408 11447 3431 11446 3449 11426 3441 11349
      3430 11349 3431 11354 3423 11361 3421 11368
      3424 11373 3422 11384 3425 11385 3425 11401
      3429 11407 3430 11414 3426 11413 3426 11417
      3419 11423 3411 11442 3408 11444

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

JCS

109 
WGUS75 KVEF 170424 RRA
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
924 PM PDT Wed Sep 16 2026

AZC015-CAC071-170434-
/O.EXP.KVEF.FF.W.0041.000000T0000Z-260917T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-San Bernardino CA-
924 PM PDT Wed Sep 16 2026 /924 PM MST Wed Sep 16 2026/

...FLASH FLOOD WARNING WILL EXPIRE AT 930 PM PDT /930 PM MST/ THIS
EVENING FOR SOUTH CENTRAL MOHAVE AND SAN BERNARDINO COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.

&&

LAT...LON 3408 11447 3431 11446 3449 11426 3441 11349
      3430 11349 3431 11354 3423 11361 3421 11368
      3424 11373 3422 11384 3425 11385 3425 11401
      3429 11407 3430 11414 3426 11413 3426 11417
      3419 11423 3411 11442 3408 11444

$$

JCS

Area Forecast Discussion
National Weather Service Las Vegas NV
425 PM PDT Wed Sep 16 2026

.KEY MESSAGES...

* Isolated-to-scattered showers and thunderstorms arrive this
  afternoon and linger into Thursday morning with a focus across our
  eastern zones.

* Elsewhere, expect breezy to south-southwesterly wind gusts until
  the weekend with dry conditions and near-normal temperatures.

&&

.DISCUSSION...Today through Tuesday.

Shower and storm activity looks to build this afternoon in Mohave Co
with initial convection starting southeast of Lake Havasu and
spreading north through the late afternoon, and reaching Lincoln Co
into the night. Fairly strong CAPE is making a good environment for
thunderstorm growth, but the lack of sheer may prevent some storms
from reaching severe status. The main threat from these storms looks
to be the potential for flooding as storms could train over certain
areas. Additional threats will be frequent lighting and locally
strong gusts from stronger cells. While Mohave and Lincoln counties
look to be the focus of the convection, isolated cells could cross
into Clark Co, along with a few storms building along higher terrain
in western Clark Co into Nye Co. Shower activity will stay with
Lincoln and Clark counties through the night and through much of
Thursday morning before dissipating.

The active weather this afternoon and through the night comes along
a pattern shift with a low passing over the area and a period of
troughing to follow. This pattern will favor windy conditions today
and tonight with widespread winds reaching 20 mph and gusts peaking
around 35 mph. Some of the favored gaps and passes along with higher
terrain could briefly exceed 40 mph gusts. Winds look to reduce
slightly for most areas into the night, but the higher terrain will
stay windy. Widespread gusts will pickup again Thursday afternoon,
but uniformly reduce that night. Friday afternoon looks to be breezy
as well, but overall winds ease into the weekend itself. The
troughing pattern will keep high temperatures close to average for
this time of year, but lows will still trend on the warmer side.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast Package...
Forecast is currently on track for today as SSW winds 10-15 kt
prevail across the Valley with gusts nearing 30 kt at times. Expect
gusts to diminish and drop off after 03z, however sustained winds
may remain elevated into tonight 08-15 kt. Evening thunderstorm
activity is ongoing east of the terminal over northwestern Arizona
and the Mormon Mesa corridor. Not currently expecting outflow from
storms to impact the Valley, but will monitor the evolution of
storms closely. FEW-SCT clouds with bases around 10kft can be
expected this afternoon and tonight, with temperatures remaining
under 100 degrees. Similar wind pattern expected tomorrow with light
SE winds during the morning, increasing after 16z, then shifting to
the S-SW around 19-21z.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...Stronger south winds 10-
20 kt with gusts 20-30 kt have developed this afternoon for many
terminals, as is expected in this summertime wind pattern. Gusts
should diminish 02-03z, however sustained winds may remain elevated
into tonight at 10-15 kt, especially in the CRV. Typical daily wind
pattern continues for KDAG as the westerly push has already begun.
Expect W winds with gusts exceeding 20 kts through the next several
hours before diminishing overnight. Thunderstorms are ongoing this
evening over Mohave Co AZ and may be in the vicinity of KIFP and
KEED before 04z; therefore keeping a Prob30 for VRB winds and TSRA.
Will monitor the evolution of storms and associated outflow
boundaries in the case they near any KIFP or KEED. Currently not
expecting outflow impacts to Las Vegas Valley sites. FEW-SCT clouds
with bases at or above 10kft are expected this evening onward for
most of the region, with lower ceilings and greater coverage in the
vicinity of thunderstorms. Similar daily wind pattern expected
tomorrow at all terminals.

&&

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

&&

DISCUSSION...Murdock
AVIATION...Moore

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