Flash Flood Warning 45, NWS Las Vegas, NV

237 
WGUS75 KVEF 110203
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
703 PM PDT Sat Aug 10 2024

AZC015-110415-
/O.CON.KVEF.FF.W.0045.000000T0000Z-240811T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
703 PM MST Sat Aug 10 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MST THIS 
EVENING FOR CENTRAL MOHAVE COUNTY...

At 703 PM MST, Thunderstorms continue along the Peacock Mountains 
east of Kingman and flash flooding remains possible along Route 66 
between Kingman airport and Valentine-Hackberry.

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...
  Kingman, Valentine, Blake Ranch Road, Dw Ranch Road and New 
  Kingman-Butler.

This includes the following highways...
	Highway 93 in Mohave County near mile marker 92.
	Interstate 40 in Arizona between mile markers 59 and 77.
	Route 66 between mile markers 60 and 91.
	Antares Road between mile markers 1 and 7.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3540 11394 3550 11386 3554 11383 3556 11376
      3556 11362 3542 11361 3531 11360 3516 11361
      3514 11374 3518 11391 3526 11399 3534 11399

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

$$

CO

387 
WGUS55 KVEF 110412
FFWVEF
AZC015-110615-
/O.EXT.KVEF.FF.W.0045.000000T0000Z-240811T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
912 PM PDT Sat Aug 10 2024

The National Weather Service in Las Vegas has extended the

* Flash Flood Warning for...
  Central Mohave County in northwestern Arizona...

* Until 1115 PM MST.

* At 912 PM MST, Thunderstorms persist along Route 66 between 
  Kingman and Valentine and flash flooding remains possible. Radar 
  estimates between 1 and 2 inches of rain have fallen along the 
  Peacock Mountains.

  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...
  Kingman, Valentine, Blake Ranch Road, Dw Ranch Road and New 
  Kingman-Butler.

This includes the following highways...
	Highway 93 in Mohave County near mile marker 92.
	Interstate 40 in Arizona between mile markers 59 and 77.
	Route 66 between mile markers 60 and 91.
	Antares Road between mile markers 1 and 7.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3540 11394 3550 11386 3554 11383 3556 11376
      3556 11362 3542 11361 3531 11360 3516 11361
      3514 11374 3518 11391 3526 11399 3534 11399

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

$$

CO

282 
WGUS75 KVEF 110607
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
1107 PM PDT Sat Aug 10 2024

AZC015-110617-
/O.EXP.KVEF.FF.W.0045.000000T0000Z-240811T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
1107 PM MST Sat Aug 10 2024

...FLASH FLOOD WARNING WILL EXPIRE AT 1115 PM MST THIS EVENING FOR 
CENTRAL MOHAVE COUNTY...

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

&&

LAT...LON 3540 11394 3550 11386 3554 11383 3556 11376
      3556 11362 3542 11361 3531 11360 3516 11361
      3514 11374 3518 11391 3526 11399 3534 11399

$$

MJW

Area Forecast Discussion
National Weather Service Las Vegas NV
1254 PM PDT Sat Aug 10 2024

.SYNOPSIS...Monsoonal moisture will continue to provide fuel
for thunderstorms across southern Nevada, northwest Arizona and
eastern San Bernardino County through Sunday. Above normal
temperatures will continue as high pressure persists over the
southwestern states. Drier air is forecast to push into the region
Monday and much of the coming week, reducing thunderstorm chances
and bringing slightly cooler temperatures to the region.
&&

.SHORT TERM...through Sunday night.

Thunderstorms started developing before noon over the mountains of
southern Nevada and northwest Arizona and conditions are favorable
for thunderstorm coverage to expand through the afternoon as cells
slowly move toward the east-southeast. This will increase the
potential for storms moving off the mountains and across the valleys
of central and southern Clark County including Las Vegas...
especially over the southern and western parts of the metro area.
Surface CAPE values around 1000 J/kg were in place across much of
southeast Nevada northwest Arizona and eastern San Bernardino County
in California and full surface heating will largely remove any
remaining CIN. Also, surface dewpoints in the upper 50s and
precipitable water values near 1.4 inches support the potential for
isolated heavy rain with some storms. After surface heating
initiates storms, boundary interactions should aid convection into
this evening especially over Mohave County and the lower Colorado
River Valley. Hi res models indicate the potential for convection
over southwest Arizona this afternoon to push widespread outflow and
additional low level moisture up across northwest Arizona and far
southern Nevada tonight.

This additional infusion of moisture will keep the moist and
unstable air mass largely over the same portion of our forecast area
Sunday. The latest HREF and NBM indicate a slight decrease in PoPs
over Clark County Sunday afternoon, but higher values over northeast
Mohave County around Colorado City. There are indications of
ingredients coming together for heavy rainfall concentrating around
that area Sunday afternoon.

High temperatures will continue to run 3-6 degrees above normal
which translates to highs of 103 to 109 across the Mojave
Desert zones. Overnight lows stay warm in the lower deserts.

.LONG TERM...Monday through Saturday.

A drying trend is shaping up Monday through at least Thursday as a
broad trough dropping down from the Pacific Northwest into the
western states leads to a widespread dry southwest flow which will
begin pushing moisture east of our area Monday then will likely
totally scour it out by Tuesday. An eastern Pacific high approaching
the SoCal coast then reinforces the drying with west-northwest flow
aloft Wednesday-Thursday which may persist beyond as ensemble
clusters indicate another broad trough dipping over the Pacific
Northwest and northern California/Nevada.

However, if this trough axis holds near the West Coast it would
allow the ridge to amplify over New Mexico/Colorado and resulting in
a southeast flow directing moisture from northern Mexico up across
Arizona and back into our area Friday and Saturday. The ECMWF
ensemble members are indicating this trend more than the GEFS. The
latest NBM Pop grids do bring 20-30 percent values into eastern
Mohave County Friday then spread 15-20 percent values into southern
Nevada by Saturday afternoon.

While we wait for monsoon moisture to return, breezy afternoons and
high temperatures holding generally between 100 and 108 degrees can
be expected for most desert zones.

&&

.AVIATION...For Harry Reid...A messy afternoon and early evening is
likely. Thunderstorms will develop over the local mountains and
drift east to southeast, ejecting outflow winds which will not only
impact airport operations but also help develop new thunderstorms.
There is a high (70%) probability of outflow winds of 20 to 30 knots
affecting the terminal, and a lower (30%) probability of a
thunderstorm directly impacting the airfield. By about 03Z the
weather should be settling down, but there is low confidence in what
the winds will look like at that time after possibly multiple rounds
of outflows. It looks like thunderstorm potential will be a little
bit lower on Sunday and much lower on Monday, although the Mormon
Mesa and Peach Springs corridors will still be affected.

For the rest of southern Nevada, northwest Arizona and southeast
California...Thunderstorm chances are expected this afternoon and
evening near and east of a line from Morongo Valley to Mount
Charleston to Rachel, with the highest chances in Mohave County. The
main threats will be erratic, gusty winds and locally lowered
ceilings with terrain obscuration. The same areas will be at risk
for thunderstorms Sunday, with the same threats, before drier air
moving in from the west pushes thunderstorm chances eastward to
Mohave County and the Nevada/Utah border area on Monday.
&&

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

SHORT TERM/LONG TERM...Adair
AVIATION...Morgan

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