Flash Flood Warning 10, NWS Las Vegas, NV

409 
WGUS75 KVEF 070004
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
504 PM PDT Tue May 6 2025

AZC015-CAC071-NVC003-070215-
/O.CON.KVEF.FF.W.0010.000000T0000Z-250507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-San Bernardino CA-Clark NV-
504 PM PDT Tue May 6 2025 /504 PM MST Tue May 6 2025/

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT /715 PM 
MST/ THIS EVENING FOR SOUTHWESTERN MOHAVE, SAN BERNARDINO AND 
SOUTHEASTERN CLARK COUNTIES...

At 504 PM PDT /504 PM MST/, Gauge reports indicated thunderstorms 
producing heavy rain across the warned area. Between 1.5 and 2 
inches of rain have fallen. The expected rainfall rate is 1 to 1.5 
inches in 30 minutes. Flash flooding is ongoing or expected to begin 
shortly.

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

SOURCE...Gauges reported.

IMPACT...Life-threatening flash flooding of low-water crossings,
         creeks, normally dry washes and roads.

Some locations that will experience flash flooding include...
  Bullhead City, Laughlin, Needles, Mesquite Creek, Mojave Ranch 
  Estates, Mohave Valley, Arizona Village, Big Bend Rec Area, Oatman 
  and Willow Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3523 11474 3517 11452 3514 11437 3501 11432
      3490 11421 3480 11426 3479 11451 3483 11471
      3507 11482 3522 11489

FLASH FLOOD...GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1-1.5 INCHES IN 30 MINUTES

$$

JCS

548 
WGUS75 KVEF 070210
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
710 PM PDT Tue May 6 2025

AZC015-CAC071-NVC003-070220-
/O.EXP.KVEF.FF.W.0010.000000T0000Z-250507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-San Bernardino CA-Clark NV-
710 PM PDT Tue May 6 2025 /710 PM MST Tue May 6 2025/

...FLASH FLOOD WARNING WILL EXPIRE AT 715 PM PDT /715 PM MST/ THIS 
EVENING FOR SOUTHWESTERN MOHAVE, SAN BERNARDINO AND SOUTHEASTERN 
CLARK COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures as the 
remaining standing water wanes.

&&

LAT...LON 3523 11474 3517 11452 3514 11437 3501 11432
      3490 11421 3480 11426 3479 11451 3483 11471
      3507 11482 3522 11489

$$

JCS

Area Forecast Discussion
National Weather Service Las Vegas NV
351 PM PDT Tue May 6 2025

.SYNOPSIS...Showers and thunderstorms continue today and tonight,
bringing periods of moderate rainfall, frequent lightning, and gusty
winds. Warmer and drier conditions return once the system exits
Wednesday night. High temperatures will be well above average by
this weekend.

&&

.SHORT TERM...Showers and thunderstorms are once again beginning
to develop late this morning. Initially they should favor Lincoln
and Mohave Counties and less so Clark County through the mid
afternoon hours. The main trigger will be a closed low dropping
southward from northern Nevada, which should move into Clark County
by late afternoon. Many of the hi-res models indicate a vort lobe
rotating around the main upper low and moving eastward across San
Bernardino County will initiate some more organized convective
activity by late afternoon. These showers and thunderstorms should
push to the east and reach the lower CRV by the evening hours.
Rainfall rates may be a bit heavier with these storms and they will
be capable of producing a quick 0.5-1.0 inches of rainfall. This
area of convection will then move into southern Mohave County toward
midnight and then continue into the overnight hours before waning
by daybreak.

The main upper low will move into Arizona on Wednesday and slowly
move to the east. It will be close enough to help trigger some
additional showers and thunderstorms on Wednesday afternoon mainly
across Mohave County. PW values will be decreasing as well as
rainfall rates.

A large scale ridge will begin to build across the Western US on
Thursday bringing drier conditions and a notable warming trend.

&&

.LONG TERM...Friday through Tuesday.

With the ridge of high pressure in firm control the temperatures
will climb several degrees through Saturday, and top out roughly 10-
15 degrees above normal by Saturday and Sunday. There is about a 30
percent chance of reaching 100 in Las Vegas on Saturday and Sunday.
If we do reach 100 it would be the earliest 100 since 2020. In lower
elevations such as the Colorado River Valley and Death Valley, a
return to triple digit temps is a virtual certainty.

Sunday onward, a trough will begin to develop off the coast of the
PacNW and may slowly creep inland next week. There is a fair amount
of uncertainty in how deep this trough will be and how quickly it
will shift inland. As such, confidence is fairly low in the details
but a slight cooling trend may begin as early as Monday along with a
return of at least breezy conditions Sunday into next week.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast Package...One
final round of thunderstorms will be possible this evening through
about 05Z. The main concerns will be erratic gusty winds, low
ceilings, and reduced visibility in rain. Ceilings should rise
thereafter, with clouds scattering out by morning. Very little
confidence in the winds until midnight.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...The main concern for
this period will be showers and thunderstorms in Lincoln, Clark, San
Bernardino, and Mohave counties. These storms will move south and
east early this evening and could persist into Wednesday in areas
well southeast of Interstate 15. The main concerns with storms will
be erratic gusty winds, low ceilings with terrain obscuration, and
reduced visibility in rain. Farther northwest, VFR conditions are
expected overnight and into Wednesday.
&&

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

&&

SHORT TERM...Czyzyk
LONG TERM...Czyzyk/Outler
AVIATION...Morgan

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