Flash Flood Warning 42, NWS Las Vegas, NV

395 
WGUS75 KVEF 052221
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
321 PM PDT Thu Sep 5 2019

CAC071-052330-
/O.CON.KVEF.FF.W.0042.000000T0000Z-190905T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
321 PM PDT Thu Sep 5 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM PDT FOR
SOUTH CENTRAL SAN BERNARDINO COUNTY...

At 320 PM PDT, Doppler radar indicated thunderstorms producing heavy 
rain have moved north of Landers. Flash flooding will continue in
the area.

Some locations that will experience flooding include...
Twentynine Palms Base, Joshua Tree Lake Campground and Johnson
Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3419 11645 3421 11644 3426 11644 3432 11648
      3436 11641 3447 11640 3447 11642 3448 11642
      3454 11618 3427 11607 3419 11606

$$

BP

551 
WGUS75 KVEF 052323
FFSVEF

Flash Flood Statement
National Weather Service Las Vegas NV
423 PM PDT Thu Sep 5 2019

CAC071-052332-
/O.EXP.KVEF.FF.W.0042.000000T0000Z-190905T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
423 PM PDT Thu Sep 5 2019

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL SAN BERNARDINO COUNTY
WILL EXPIRE AT 430 PM PDT...

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

LAT...LON 3419 11645 3421 11644 3426 11644 3432 11648
      3436 11641 3447 11640 3447 11642 3448 11642
      3454 11618 3427 11607 3419 11606

$$

BP

Area Forecast Discussion
National Weather Service Las Vegas NV
217 PM PDT Thu Sep 5 2019

.SYNOPSIS...Shower and thunderstorm chances diminish tonight
through Friday as the region begins to dry out. Drier and cooler
weather along with afternoon breezes expected next week.
&&

.DISCUSSION...through Wednesday.

Monsoonal moisture and associated shower and thunderstorm chances
will give way to fire weather concerns as cooler, drier air
arrives for next week.

The focus for today's thunderstorm chances has been a upper-level
disturbance moving north across the region. Although leftover
shower and thunderstorms from last night has resulted in abundant
cloud cover, lift has been sufficient to continue to generate
shower activity in southern Inyo and Nye, as well as Clark
counties. Instability looks modest, even in areas that are
receiving sunshine - with CAPE values generally 500 to 1500.
Downdraft CAPE is around 1500, and storm motion is 15 to 20 knots
to the north. Given these parameters, expect only brief periods of
heavy rain with storms that do get going, with strong outflow
winds the primary threat.

As flow begins to shift southwesterly in response to an upper-
level trough of low pressure coming onshore into the PacNW,
expect drying conditions, with showers and thunderstorms limited
to northern Mohave and Lincoln county for Friday. Another upper-
level trough follows for Saturday into Sunday, and another for
midweek next week. These will result in cooler temperatures and
afternoon breezes.
&&

.FIRE WEATHER...Scattered showers and thunderstorms across the
region today will become more limited on Friday. A series of low
pressure systems will begin to dry the area out over the weekend.
While cooler temperatures are expected, dry air and afternoon
breezes will begin to elevate fire weather concerns over the
weekend into much of next week.
&&

.AVIATION...For McCarran...Southwest winds are expected to
continue through much of the afternoon, generally remaining below
10-12 knots. Low confidence on the forecast this afternoon, but
some isolated to scattered showers and thunderstorms will be
possible through the afternoon and early evening in and around the
Las Vegas Valley, which could impact corridors to the southeast
and southwest. With stronger showers and thunderstorms, gusty
outflow winds will be possible which could impact the terminal.
Outside of outflow winds, winds are expected to remain from the
south-southwest through the overnight period. Only slight chances
of a storm or two will be possible mainly along the higher
terrain tomorrow and a typical valley wind pattern is expected.
SCT to BKN aoa 10-12 kft will be possible through much of
tomorrow.

For the rest of southern Nevada, northwest Arizona and southeast
California...Low confidence on the forecast this afternoon, but
some isolated to scattered showers and thunderstorms will be
possible through the afternoon and early evening across much of
the region. Slightly better chances for showers and storms to
impact KBIH, KDAG, and KIGM this afternoon. With stronger showers and
thunderstorms, gusty outflow winds will be possible which could
impact nearby terminals. Outside of outflow winds, winds are
expected to follow typical diurnal patterns, favoring a south-
southwesterly direction in the afternoon. SCT to BKN aoa 10-12
kft will be possible through much of tomorrow. &&

.SPOTTER INFORMATION STATEMENT...Scattered thunderstorm activity
is likely today. Spotters are encouraged to report any
significant weather or impacts according to standard operating
procedures.
&&

DISCUSSION...Steele
AVIATION.....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
921 AM PDT THU SEP 5 2019

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

0830 PM     TSTM WND GST     1 NE DESERT HILLS       34.57N 114.35W
09/04/2019  M59 MPH          MOHAVE             AZ   AWOS

            GUST RECORDED AT LAKE HAVASU CITY AIRPORT.

&&

DSB