Flash Flood Warning 67, NWS Las Vegas, NV

853 
WGUS75 KVEF 180557
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
1057 PM PDT TUE JUL 17 2018

NVC003-180815-
/O.CON.KVEF.FF.W.0067.000000T0000Z-180718T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-
1057 PM PDT TUE JUL 17 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM PDT FOR
NORTHEASTERN CLARK COUNTY...

At 1055 PM PDT, Heavy rain was beginning to ease across the Moapa 
Valley and around Logandale...but significant runoff continues. 
Radar estimates some locations in the Moapa Valley picked up between 
1 and 2 inches of rainfall in a short duration. 

Some locations that will experience flooding include...
Overton, Moapa Town, Moapa Valley, Echo Bay, Valley Of Fire, Overton
Beach, Echo Bay Campground and Logandale.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3671 11422 3638 11409 3629 11439 3631 11484
      3649 11501 3676 11457

$$

Outler

879 
WGUS75 KVEF 180630
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
1130 PM PDT TUE JUL 17 2018

NVC003-180815-
/O.CON.KVEF.FF.W.0067.000000T0000Z-180718T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-
1130 PM PDT TUE JUL 17 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM PDT FOR
NORTHEASTERN CLARK COUNTY...

At 1128 PM PDT, Fire officials were reporting ongoing flooding in 
the Overton and Logandale areas.  Some roads are impassable and 
dangerous.  While the heaviest rainfall has ended...moderate rain 
and embedded thunderstorms continue to aggravate streamflows.  Flash 
flooding will remain likely through the late night hours. 

Some locations that will experience flooding include...
Overton, Moapa Town, Moapa Valley, Echo Bay, Valley Of Fire, Overton
Beach, Echo Bay Campground and Logandale.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3671 11422 3638 11409 3629 11439 3631 11484
      3649 11501 3676 11457

$$

Outler

308 
WGUS75 KVEF 180817
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
117 AM PDT WED JUL 18 2018

NVC003-180826-
/O.EXP.KVEF.FF.W.0067.000000T0000Z-180718T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-
117 AM PDT WED JUL 18 2018

...THE FLASH FLOOD WARNING FOR NORTHEASTERN CLARK COUNTY HAS
EXPIRED...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat, however runoff from earlier rains may continue overnight. 
Please continue to heed any remaining road closures.

LAT...LON 3671 11422 3638 11409 3629 11439 3631 11484
      3649 11501 3676 11457

$$

Area Forecast Discussion
National Weather Service Las Vegas NV
700 PM PDT Tue Jul 17 2018

.SYNOPSIS...Hot and humid conditions will continue through mid week
with thunderstorms possible across much of the forecast area
through the end of the week, especially in the higher terrain.
&&

.UPDATE...At 7 pm...scattered thunderstorms were primarily confined
to parts of Lincoln County and northern Mohave County with a couple
of weak cells in western Clark County. The activity in Lincoln
County is expected to drift to the southeast into the northeast
portion of Clark County over the next few hours. In general, there
should be a downward trend in most of this activity after sunset.
Updates are out. -Salmen-
&&

.PREVIOUS DISCUSSION...231 PM PDT...

.SHORT TERM...through Thursday night.

Two primary weather features influencing our weather are high
pressure currently centered over the central California coastline
and an inverted trough moving across southern Arizona and northern
Mexico. Overnight, the high pressure center moves inland over
central California and the inverted trough pushes into southern
California. Any storms that survive or develop overnight, will
generally move to the southwest across Mohave County and southern
San Bernardino County. The last several runs of the HRRR has trended
away from bringing storms out of Lincoln County into Clark County.
Left a chance of showers/storms in the Spring Mountains and Sheep
Range this evening but kept the Las Vegas Valley dry based on the
latest HRRR forecast.

On Wednesday, high pressure shifts east into central Nevada while
the inverted trough lifts northwest across San Bernardino County.
This track will bring higher moisture and increasing instability
across the Sierra and Inyo County. More than sufficient moisture and
weak instability elsewhere will give most areas a chance of showers
and storms Wednesday afternoon/evening with the possible exception
of San Bernardino County which will lie in an unfavorable region of
downward motion behind the trough.

The high is forecast to re-position over the four corners area on
Thursday with a general southeasterly flow setting up across the
forecast area. Any embedded disturbances or decaying MCS that form
south-southeast of our area Wednesday night could become a player
influencing convective activity Thursday.

An Excessive Heat Warning is in effect through Wednesday evening for
the Owens Valley and Esmeralda County with a Excessive Heat Advisory
in effect for the White Mountains of Inyo County. Hot and humid
conditions are expected with sky conditions and temperatures greatly
influenced by the amount of clouds spread across the region from
decaying overnight convection.

.LONG TERM...Friday through Tuesday.

By FRI, an upper level trough over NW Canada and the NW Pacific will
help nudge the ridge overhead eastward, eventually moving it over
New Mexico and Texas by Saturday. The eastward propagation of the
high should result in some mid-level dry air off the SoCal coast to
filter in across southwestern portions of our CWA FRI-SAT. However,
lingering low level moisture combined with daytime heating will
still allow for thunderstorms to develop mainly along higher terrain
through the weekend. By SUN-MON, models are now shifting the high
pressure back across the southwest and over Arizona. This westward
propagation will increase temps and continue to keep thunderstorms
chances mainly focused over the higher terrain through TUE. Main
threats with any thunderstorm development will be localized
flooding, small hail, and strong to severe outflows capable of
producing damaging winds and blowing dust.

Besides storm chances, expect light winds less than 10-15 mph,
temperatures to increase a degree or two each day and partly sunny
to partly cloudy skies.
&&

.AVIATION...For McCarran...Outside of convective influence, light,
variable winds below 10 knots will continue across the terminal
through the afternoon, favoring an easterly direction. Probability
of outflow affecting the terminal this evening is low. CIGs should
remain above 10k feet.

For the rest of southern Nevada, northwest Arizona and southeast
California...Scattered to isolated thunderstorms across the region
through the remainder of the afteroon with storms likely to persist
through the night along and south of Interstate 40 through southern
California and southwest Arizona. Outside of thunderstorm
influences, winds will follow diurnal trends with speeds of 5-15
knots. CIGs at or above 10k feet in general but CIGs may drop to 5-7
k feet in shower and storms.
&&

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

SHORT TERM/AVIATION...Salmen
LONG TERM.............Kryston

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

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

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
440 PM PDT TUE JUL 17 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0413 PM     FLASH FLOOD      6 N HUALAPAI PEAK       35.17N 113.89W
07/17/2018                   MOHAVE             AZ   COUNTY OFFICIAL

            MOHAVE COUNTY PUBLIC WORKS REPORTED DW RANCH
            ROAD CLOSED DUE TO FLOODING BETWEEN MILE
            MARKERS 3 AND 5.

&&