Flash Flood Warning 154, NWS Las Vegas, NV

449 
WGUS75 KVEF 120109
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
609 PM MST THU OCT 11 2018

AZC015-120245-
/O.CON.KVEF.FF.W.0154.000000T0000Z-181012T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
609 PM MST THU OCT 11 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MST FOR
WESTERN MOHAVE COUNTY...

At 603 PM MST, a Park Ranger at the Lake Mead National Recreation 
Area reported some debris along the Willow Beach Access Road due to 
heavy rainfall. Although it is no longer raining in the warned area, 
flooding may still be possible near Willow Beach. 

Flash flooding will remain over mainly rural areas of western Mohave
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3580 11467 3585 11470 3587 11466 3591 11471
      3593 11471 3598 11455 3583 11446

$$
CK

341 
WGUS75 KVEF 120133
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
633 PM MST THU OCT 11 2018

AZC015-120143-
/O.CAN.KVEF.FF.W.0154.000000T0000Z-181012T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
633 PM MST THU OCT 11 2018

...THE FLASH FLOOD WARNING FOR WESTERN MOHAVE COUNTY IS CANCELLED...

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

LAT...LON 3580 11467 3585 11470 3587 11466 3591 11471
      3593 11471 3598 11455 3583 11446

$$
CK

Area Forecast Discussion
National Weather Service Las Vegas NV
203 PM PDT Thu Oct 11 2018

.SYNOPSIS...A low pressure system dropping south into SoCal will
bring a chance for showers to the region today, and again over the
weekend, along with continued below-normal temperatures. Drier
conditions are expected next week, but temperatures will remain cool
by Mid-October standards.
&&

.SHORT TERM...through Saturday night.

A positively-tilted trough that is digging into the Great Basin will
begin to form a cut-off low tonight and into Friday morning. Warm
air advection and moisture associated with this trough resulted in
some isolated showers through southeastern Nevada and northwestern
Arizona overnight and this morning. Widespread 12-hour rainfall
totals were less than half of an inch with isolated totals over half
an inch along the Arizona-Utah border. Isolated showers remain
possible through the day today, but will continue to dissipate
overnight before disappearing Friday morning, as a result of the cut-
off low moving off the shore of California.

Rain chances come back into the forecast Saturday morning as the cut-
off low begins to move back on shore, bringing moisture and
diffluence aloft with it. The low continues to dance around our
CWA...this time to our south. As a result, PoPs will remain south of
I-40 for much of Saturday before tapering off late Saturday-early
Sunday when the low pushes eastward out of our area.

Temperatures will continue to trend below the seasonal average,
hovering in the upper-70s to lower-80s through the end of the work
week and into the weekend.
&&

.LONG TERM...Sunday through Thursday.

The upper low that is progged to move inland across southern
California Saturday will become absorbed into a deep/colder trough
digging south through Utah Sunday. The digging trough will close off
into an upper low over Arizona/New Mexico Monday-Wednesday with an
area of high pressure over northwest Nevada and the Pacific
Northwest. Closed low finally starts to weaken and lift out of the
southwest states late week. There has been some spread amongst
previous model runs showing the upper low gradually retrograding
westward across Arizona next week. Latest 12z runs not showing this
now and they keep the low further east.

With the southern Great Basin and Mojave Desert lying on the
backside of the upper low our region will continue to experience
below normal temperatures. In fact, first freeze of the season
possible across parts of Esmeralda, central Nye, Lincoln and
northern Mohave Counties next Monday and Tuesday mornings.
Meanwhile, Las Vegas temperatures those mornings could dip into the
low 50s. Does not look like good boating conditions either as wind
hazard products may be needed for gusty northerly winds developing
Sunday and lasting through Monday.
&&

.AVIATION...For McCarran...Easterly wind expected to continue
into early evening before becoming light and variable overnight.
Northeast winds 8-12 kts expected to develop 17Z-22Z Friday before
decreasing in the late afternoon and evening. Light rain showers
expected to stay east of the valley or over the higher terrain.
BKN080 for the most part overnight, but won't be surprised to see
several hours with less cloudiness at SCT080. Decreasing moisture
Friday leading to clouds FEW-SCT080.

For the rest of southern Nevada, northwest Arizona and southeast
California...Isolated/Scattered showers and thunderstorms more
likely over the Colorado River Valley and Mohave County through the
evening before dissipating. Ceilings 060-080 overnight with less
cloudiness with VFR conditions Friday. No significant winds
overnight. A north wind develops within the Colorado River at KIFP
for several hours Friday morning before weakening in the afternoon.
&&

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

SHORT TERM...Varian
LONG TERM/AVIATION...Pierce

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