Flash Flood Warning 20, NWS Las Vegas, NV

622 
WGUS75 KVEF 250004
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
504 PM PDT Wed Jul 24 2019

AZC015-NVC003-250115-
/O.CON.KVEF.FF.W.0020.000000T0000Z-190725T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-Clark NV-
504 PM PDT Wed Jul 24 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM PDT/615 PM
MST/ FOR CENTRAL MOHAVE AND EASTERN CLARK COUNTIES...

At 502 PM PDT/502 PM MST/, Doppler radar indicated thunderstorms 
producing heavy rain in a widespread area near Dolan Springs. One to 
two inches has fallen. Flash flooding is expected to begin shortly 
or is already occurring.

Some locations that will experience flooding include...
Grand Canyon Ranch, Lake Mead National Recreation Area near South 
Cove, Valentine, Grand Canyon Skywalk, Diamond Creek Campground, 
Pierce Ferry And Antares Roads, Diamond M Ranch, South Cove, 
Meadview, Dolan Springs and Peach Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3609 11323 3610 11331 3605 11335 3597 11332
      3591 11334 3589 11331 3582 11333 3521 11333
      3517 11367 3534 11404 3588 11426 3599 11425
      3618 11408 3619 11399 3614 11320

$$

VARIAN

772 
WGUS75 KVEF 250109
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
609 PM PDT Wed Jul 24 2019

AZC015-NVC003-250117-
/O.EXP.KVEF.FF.W.0020.000000T0000Z-190725T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-Clark NV-
609 PM PDT Wed Jul 24 2019

...THE FLASH FLOOD WARNING FOR CENTRAL MOHAVE AND EASTERN CLARK
COUNTIES WILL EXPIRE AT 615 PM PDT/615 PM MST/...

The heavy rain has ended across east central Mohave County and the 
flash flood warning will be allowed to expire. Flash Flooding 
remains possible further west near Kingman and Golden Valley. 

LAT...LON 3609 11323 3610 11331 3605 11335 3597 11332
      3591 11334 3589 11331 3582 11333 3521 11333
      3517 11367 3534 11404 3588 11426 3599 11425
      3618 11408 3619 11399 3614 11320

$$

Outler

Area Forecast Discussion
National Weather Service Las Vegas NV
254 PM PDT Wed Jul 24 2019

.SYNOPSIS...High pressure centered east of the area will continue
to provide a favorable monsoon flow into the area through Thursday,
resulting in scattered thunderstorms again on Thursday. A drying
trend begins Friday with hot and dry conditions expected over the
weekend. Monsoon moisture is forecast to return early next week
with another round of thunderstorms possible by Tuesday. &&

.DISCUSSION...tonight through Friday.

Isolated to scattered thunderstorms will continue through the
evening hours decreasing overnight as support from an inverted
trough ends as it lifts away from the area. A Flash Flood Watch
remains in effect until 11 pm this evening for portions of
southern California, southern Nevada and northwest Arizona as the
inverted trough interacts with unseasonably high PWATs and weak
instability to increase rain efficiency and bring an elevated
risk for flash flooding.

Essentially, little movement is forecast in the position of high
pressure on Thursday with little change in available moisture.
However, the area of concern for more widespread storms and an
increased potential for flash flooding shifts to the northern
regions of the CWA. A Flash Flood Watch is in effect for Thursday
afternoon/evening for portions of the southern Great Basin. High
pressure shifts to southeast Arizona on Friday with precipitable
water values decreasing somewhat. However, moisture remains more
than sufficient for storm development, especially across the
Sierra and southern Great Basin due, in part, to support provided
by a trough moving into central California. This feature could
help support nocturnal convection Friday night as it passes
across southcentral Nevada.

High pressure moves directly over the area this weekend and as a
result, stabilizes the airmass over the region and ends
thunderstorm chances for the time being. In addition, temperatures
are forecast to soar to several degrees above normal with MOS
guidance showing temperatures on Sunday in Las Vegas at or above
110 degrees. In response, excessive heat indices rise on Sunday
but then lower again Monday as temperatures drop off.

The high pivots east of the area Monday and re-positions near the
Four Corners by Tuesday signaling a return of monsoon moisture
and increasing chances for thunderstorms. In response to the
increased moisture, temperatures would fall back to below normal
by mid week.
&&

.AVIATION...For McCarran...A challenging forecast through the TAF
period as an active monsoon pattern lowers confidence. Complex of
storms near the Peach Springs corridor this afternoon will likely do
one of two things, either hold together and continue moving west
into the Las Vegas Valley, or collapse, and send strong outflow
towards the valley. In either case, expect another chance for
thunderstorms and associated hazards around the valley this evening,
then again Thursday morning. Turbulence and icing hazards expected
with thunderstorms near the valley and approach corridors, along
with gusty and erratic surface winds. CIGs should remain above 10
Kft with thunderstorms.

For the rest of southern Nevada, northwest Arizona and southeast
California...Monsoon thunderstorms will keep the forecast tricky
through the TAF period. A developing complex in northwest Arizona
will the be primary concern this evening, along with any outflow it
may produce. On Friday, thunderstorms most likely north of a KNID-
KIGM line with heavy rain and gusty, erratic winds as the primary
threat; generally southwesterly winds south of the line. CIGs with
any thunderstorms will likely remain above 10 Kft, but expect icing
and turbulence hazards aloft in the region.
&&

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

DISCUSSION...Salmen
AVIATION...Steele

For more forecast information...see us on our webpage:

http://weather.gov/lasvegas or follow us on Facebook and Twitter

DISCUSSION...Salmen
AVIATION...Steele

For more forecast information...see us on our webpage:

http://weather.gov/lasvegas or follow us on Facebook and Twitter