Flash Flood Warning 37, NWS Las Vegas, NV

998 
WGUS75 KVEF 180247
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
747 PM PDT Thu Jul 17 2025

NVC003-017-180415-
/O.CON.KVEF.FF.W.0037.000000T0000Z-250718T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-Lincoln NV-
747 PM PDT Thu Jul 17 2025

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM PDT THIS 
EVENING FOR SOUTHWESTERN LINCOLN AND NORTHWESTERN CLARK COUNTIES...

At 747 PM PDT, Doppler radar indicated thunderstorms producing heavy 
rain over northwest Clark County. The heaviest rain was falling well 
east of Interstate 11 and will drain over Alamo Road. Flash flooding 
is ongoing or expected to begin shortly.

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

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  Indian Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3679 11532 3666 11527 3657 11526 3648 11530
      3638 11537 3636 11538 3634 11552 3635 11569
      3641 11573 3644 11574 3652 11573 3665 11576
      3671 11575 3683 11571 3687 11534

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

$$

CM

728 
WGUS75 KVEF 180406
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
906 PM PDT Thu Jul 17 2025

NVC003-017-180416-
/O.EXP.KVEF.FF.W.0037.000000T0000Z-250718T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-Lincoln NV-
906 PM PDT Thu Jul 17 2025

...FLASH FLOOD WARNING WILL EXPIRE AT 915 PM PDT THIS EVENING FOR 
SOUTHWESTERN LINCOLN AND NORTHWESTERN CLARK COUNTIES...

The heavy rain has ended over northwest Clark County. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

A Flood Watch remains in effect until 1100 PM PDT for portions of 
northwest Arizona and Nevada.

&&

LAT...LON 3679 11532 3666 11527 3657 11526 3648 11530
      3638 11537 3636 11538 3634 11552 3635 11569
      3641 11573 3644 11574 3652 11573 3665 11576
      3671 11575 3683 11571 3687 11534

$$

CM

Area Forecast Discussion
National Weather Service Las Vegas NV
438 PM PDT Thu Jul 17 2025

.KEY MESSAGES...

* Increased monsoonal moisture brings scattered showers and storms
  to the area through Saturday, with flash flooding and gusty
  outflow winds the main hazards.

* Below-normal temperatures today and Friday, with a gradual rebound
  to near seasonal values over the weekend and next week.

* Breezy southwest winds and drier conditions return next week as a
  trough sits off the West Coast.

&&

.DISCUSSION...through Wednesday.

Latest satellite imagery shows an MCV drifting NW through
southeastern portions of the CWA. This feature, along with the
terrain, will be the lifting mechanism for scattered convection
across Mohave, Clark, and Lincoln counties this afternoon. Flash
flooding and gusty outflow winds are the primary hazards. Due to the
increased moisture and forecast coverage of storms, opted to issue a
short-fused Flash Flood Watch for the aforementioned counties until
11PM. Farther west, convection and the subsequent hazards will be
more isolated in nature. Tomorrow, precipitation chances become more
widespread across the region, but the greatest coverage is expected
in northern Lincoln and central Nye counties. This area will have
the greatest risk of flash flooding. By Saturday, drier air begins
to move in from the west, bring precip chances down and largely
confining them Mohave and Lincoln counties, though an isolated storm
or two may develop on the Sierra and/or Spring Mountains.

Due to increased moisture and cloud cover, temperatures will be 5-10
degrees below normal for most of the area, particularly the eastern
half. As drier air moves in over the weekend and next week,
expecting a rebound to more seasonal values. This drier air will
also be accompanied by increased southwest winds as a trough sits
off the West Coast. Chances for impactful winds appear modest (under
30%) at this point, but breezes could be strong enough to elevate
fire weather conditions in areas that don't see much precipitation
over the next few days.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast
Package...Primary concern continues to be convective activity
through ~06Z. Vicinity convection is likely (90%), but chances of
rain at the terminal are closer to ~50%. Should a storm move
overhead, brief downpours could result in MVFR or IFR conditions.
Otherwise, gusty outflow winds will be the main hazard. Gusts most
likely to be in the 25-40 knot range, but cannot rule out gusts
~50 knots if a storm moves over the terminal. Outside of
convective influences, winds should largely be from the south-
southeast at 8-12 knots and gusts up to 20 knots. Scattered to
broken clouds around 12kft, potentially dropping to 8-10kft if a
storm moves overhead. Another round of storms is expected to
develop by around midday Friday, with associated impacts expected
through late afternoon. Temperatures remain under 100F through the
forecast period.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...Scattered convection
to continue through the evening hours across northwestern AZ and
southeastern NV. Isolated shower/virga activity possible across
our California zones. Under the heaviest cores, brief downpours
could result in MVFR or IFR conditions. Outflow wind gusts 20-40
knots, possibly higher should a storm move over an airport.
Outside of convective influences, winds for most of the area will
be from the south, though across the Western Mojave, westerly
winds are favored, with variable winds in the Owens Valley.
Scattered to broken clouds around 12kft, potentially dropping to
8-10kft if a storm moves overhead.

&&

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

&&

DISCUSSION...Woods
AVIATION...Phillipson

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