Flash Flood Warning 131, NWS Las Vegas, NV

729 
WGUS75 KVEF 222355
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
455 PM MST WED AUG 22 2018

AZC015-230005-
/O.CAN.KVEF.FF.W.0131.000000T0000Z-180823T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
455 PM MST WED AUG 22 2018

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

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

LAT...LON 3512 11347 3506 11365 3512 11382 3532 11370
      3529 11361 3534 11347 3541 11334 3541 11333
      3518 11333

$$

Morgan

Area Forecast Discussion
National Weather Service Las Vegas NV
114 PM PDT Wed Aug 22 2018

.SYNOPSIS...Thunderstorms will continue over northwest Arizona
through sunset. Dry conditions will spread across northwest Arizona
by Friday. Dry conditions with seasonal temperatures and afternoon
breezes are expected through the first half of the weekend. A
deepening trough could bring gusty winds to the area on Sunday and
Monday.
&&

.Discussion...

A Flash Flood Watch continues over northern Mohave County through 9
pm. Thunderstorm activity is expected to diminish after sunset with
the loss of daytime heating. Low pressure over the northern Great
Basin will move into the northern Rockies tonight with shortwave
ridging forecast over the area on Thursday. Higher pwats (over an
inch) are forecast to be confined to the Colorado River Valley and
Mohave County. Instability progs indicate possible thunderstorms
over Mohave County again Thursday, ending on Friday as stable
conditions overtake the CWA. Temperatures are expected to be
seasonal with afternoon breezes.

LONG TERM....Saturday through Wednesday.

Some slight changes were made to decrease POPs in Mohave County as
southwest flow will bring in drier air across much of the region and
keep monsoonal moisture confined to central AZ through the weekend.
By Sunday, the medium range models bring in a trough across the NW
states which will result in increased southwest winds of 20 to 35
MPH across the region. By Monday, the trough will dig further into
the Great Basin region resulting in stronger southwest winds of 30
to 40 MPH. This trough will scour out the remaining low grade
moisture over northwest AZ and decrease temperatures a tad behind a
weak cold front Monday night. By Tuesday, expect breezy southwest
winds and slightly below normal to near normal temperatures.
&&

.AVIATION...For McCarran...18Z TAF period will begin initially
southeasterly but will transition to southerly and eventually
southwesterly in the first hour or so of the period. Breezy winds
with gusts to 20-25 kts will be possible by 21Z this afternoon in
the valley. By 02-03Z this evening, gusts should drop off or remain
mostly occasional and eventually become light and variable by around
12Z tomorrow morning. There is a slight chance for storms to develop
around the valley this afternoon and storm development is already
ongoing east of the terminal. However, majority of model solutions
keeps this activity east and believe this will keep KLAS from seeing
direct impacts. Should this occur however, amendments will be needed
to account for possible outflow wind impacts.

For the rest of southern Nevada, northwest Arizona and southeast
California...Breezy southerly winds will begin across the Colorado
River Valley terminals and Las Vegas Valley terminals with gusts to
20-25 kts by 21Z. Included VCTS again today for KEED and KIFP as
isolated storms may develop in the vicinity at some point this
afternoon. Timing is low confidence but satellite trends suggest
this may occur as soon as in the next hour or two persisting through
the afternoon and into the evening. Elsewhere, expect diurnal winds
to continue. After 03Z this evening, valley gusts should drop off or
remain mostly occasional until light diurnal winds kick in by 10-12Z
tomorrow morning.
&&

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

DISCUSSION...Salmen
AVIATION...Boucher

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...SUMMARY
NATIONAL WEATHER SERVICE LAS VEGAS NV
1123 AM PDT WED AUG 22 2018

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

0330 AM     FLASH FLOOD      COLORADO CITY           36.99N 112.98W
08/22/2018                   MOHAVE             AZ   TRAINED SPOTTER

            ALL MAJOR ROADWAYS FLOODED WITHIN COLORADO
            CITY. TIME ESTIMATED FROM RADAR.

0540 PM     FLASH FLOOD      6 ESE COLORADO CITY     36.96N 112.87W
08/21/2018                   MOHAVE             AZ   DEPT OF HIGHWAYS

            ROSY CANYON RD. IS CLOSED FROM CANE BEDS RD.
            TO UTAH STATE LINE DUE TO FLASH FLOODING.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
138 PM PDT WED AUG 22 2018

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

0620 AM     HEAVY RAIN       3 SSE COLORADO CITY     36.96N 112.96W
08/22/2018  M3.70 INCH       MOHAVE             AZ   MESONET

            CANE BEDS MOHAVE COUNTY FLOOD CONTROL
            DISTRICT ALERT STATION REPORTED 3.70 INCHES
            BETWEEN 1130 PM 8/21/18 AND 617 AM 8/22/18.

0115 AM     HEAVY RAIN       3 SSE COLORADO CITY     36.96N 112.96W
08/22/2018  M2.09 INCH       MOHAVE             AZ   MESONET

            CANE BEDS MOHAVE COUNTY FLOOD CONTROL ALERT
            STATION REPORTED 2.09 INCHES BETWEEN 1130 PM
            8/21/18 AND 115 AM 8/22/18.

&&