Flash Flood Warning 178, NWS Las Vegas, NV

300 
WGUS75 KVEF 270037
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
537 PM MST MON AUG 26 2013

AZC015-270200-
/O.CON.KVEF.FF.W.0178.000000T0000Z-130827T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
537 PM MST MON AUG 26 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MST FOR
NORTHEASTERN MOHAVE COUNTY...

AT 530 PM MST...TRAINED WEATHER SPOTTERS REPORTED A FOOT OF WATER 
RUNNING DOWN JOHNSON AVENUE.  RADAR SHOWED THUNDERSTORMS WITH HEAVY 
RAIN STILL IN THE AREA. THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM COLORADO CITY TO 12 MILES NORTHEAST OF KAIBAB...OR 
ALONG A LINE EXTENDING FROM COLORADO CITY TO KANAB. THE 
THUNDERSTORMS WITH EXCESSIVE RAIN WERE MOVING SLOWLY NORTHWARD.

LOCATIONS IMPACTED INCLUDE...
COLORADO CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR ON TWITTER USING...AT NWSVEGAS.

&&

LAT...LON 3691 11254 3690 11256 3688 11255 3681 11258
      3680 11261 3675 11261 3675 11320 3701 11321
      3701 11255 3698 11252

$$

JH

765 
WGUS75 KVEF 270157
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
657 PM MST MON AUG 26 2013

AZC015-270206-
/O.EXP.KVEF.FF.W.0178.000000T0000Z-130827T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
657 PM MST MON AUG 26 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM MST FOR NORTHEASTERN
MOHAVE COUNTY...

AT 655 PM MST...RADAR INDICATED ONLY LIGHT RAIN REMAINING OVER 
NORTHEASTERN MOHAVE COUNTY. THE FLASH FLOOD WARNING WILL BE ALLOWED 
TO EXPIRE...BUT A NEW WARNING HAS BEEN ISSUED FOR THE COLORADO CITY 
AREA UNTIL 8 PM MST TO ACCOUNT FOR WATER DRAINING OUT OF THE 
MOUNTAINS AND FLOODING STREETS.

LAT...LON 3691 11254 3690 11256 3688 11255 3681 11258
      3680 11261 3675 11261 3675 11320 3701 11321
      3701 11255 3698 11252

$$

MORGAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
310 PM PDT MON AUG 26 2013

.SYNOPSIS...MOISTURE FROM THE REMNANTS OF IVO WILL CONTINUE TO
RESULT IN SCATTERED SHOWERS AND THUNDERSTORMS THROUGH THE MIDDLE
PART OF THE WEEK. ANOTHER DISTURBANCE IS EXPECTED TO BRING
ADDITIONAL MOISTURE INTO THE REGION LATER IN THE WEEK RESULTING IN A
CONTINUATION OF SCATTERED SHOWERS AND THUNDERSTORMS. TEMPERATURES
ARE EXPECTED TO REMAIN AT TO SLIGHTLY BELOW NORMAL.
&&

.SHORT TERM...A BAND OF LIGHT TO MODERATE SHOWERS EXTENDING FROM
SOUTHWEST SAN BERNARDINO COUNTY THROUGH CLARK COUNTY AND INTO
LINCOLN COUNTY. GENERAL RAIN AMOUNTS UP TO A QUARTER OF AN INCH HAVE
BEEN NOTED UNDER THIS BAND. WITHOUT ANY SIGNIFICANT DISTURBANCE
THUNDERSTORMS AND HEAVY RAIN WERE NOT ABLE TO DEVELOP UNDER THIS
BAND. THERE WAS SOME SUN THIS AFTERNOON ACROSS NORTHERN INYO INTO
ESMERALDA COUNTY THIS AFTERNOON...BUT JUST NOT ENOUGH INSTABILITY TO
DEVELOP ANYTHING MORE THAN A FEW CUMULUS. HOWEVER...WITH A LITTLE
MORE SUN AND INSTABILITY OVER MOHAVE COUNTY...A FEW THUNDERSTORMS
WERE ABLE TO DEVELOP OVER THE PAST COUPLE OF HOURS. THESE SHOULD
CONTINUE INTO EARLY THIS EVENING...BUT GRADUALLY DISSIPATE BY LATE
EVENING.

FOR TUESDAY...WE ARE EXPECTING TO SEE MORE SUN IN THE MORNING WHICH
SHOULD DESTABILIZE THE ATMOSPHERE A LITTLE MORE QUICKLY. THIS SHOULD
LEAD TO MORE THUNDERSTORM COVERAGE. WITH PLENTY OF MOISTURE STILL
AVAILABLE...PWATS OVER AN INCH AREAWIDE AND OVER AN INCH AND A HALF
OVER THE SOUTHERN HALF OF THE AREA...FLASH FLOODING WILL AGAIN BE A
CONCERN. HAVE GONE AHEAD AND EXTENDED THE FLASH FLOOD WATCH INTO
TUESDAY EVENING.

.LONG TERM...WEDNESDAY THROUGH SUNDAY...THE 00Z ECMWF AND GFS MODELS
ARE IN GOOD AGREEMENT WITH THE OVERALL PATTERN THROUGH FRIDAY.
LINGERING MOISTURE OVER THE AREA WEDNESDAY WILL FUEL ISOLATED TO
SCATTERED THUNDERSTORMS IN THE AFTERNOON AND EVENING WITH SURFACE
HEATING EXPECTED TO BE THE PRIMARY MECHANISM TO INITIATE CONVECTION.
ATTENTION WILL ALSO BE TURNED TO A FEATURE THAT COMES INTO VIEW
WEDNESDAY...THE REMNANTS OF TROPICAL STORM FERNAND WHICH IS
CURRENTLY MOVING OFF THE GULF OF MEXICO INTO THE COAST OF EAST
CENTRAL MEXICO. THIS SYSTEM WILL TRANSITION INTO AN EASTERLY WAVE
THAT WILL LIFT ACROSS NORTHWEST MEXICO WEDNESDAY THEN UP INTO
SOUTHERN NEVADA THURSDAY AFTERNOON THROUGH FRIDAY WITH AN ADDITIONAL
SHOT OF CONSIDERABLE MOISTURE. THE EASTERLY WAVE SHOULD ALSO PROVIDE
SOME DYNAMIC SUPPORT FOR AN UPSWING IN SHOWERS AND THUNDERSTORMS
LATE THURSDAY THROUGH FRIDAY. THE ECMWF KEEPS THIS MOISTURE IN PLACE
OVER MOST OF THE FORECAST AREA SATURDAY AND SUNDAY WHILE THE GFS
TRIES TO PUSH IT OUT WITH INCREASING SOUTHWEST FLOW FROM A DEEPER
UPPER LOW DROPPING DOWN INTO NORTHERN CALIFORNIA. THE FORECAST LEANS
MORE TOWARD THE ECMWF SOLUTION AND KEEPS 20-40 PERCENT CHANCE OF
THUNDERSTORMS ACROSS MOST OF THE AREA INTO NEXT WEEKEND. MOISTURE
WILL BE ENTRENCHED AND THE GFS HAS A TENDENCY TO SCOUR IT OUT TOO
QUICKLY. TEMPERATURES WERE LOWER SLIGHTLY THURSDAY AND FRIDAY GIVEN
THE EXPECTED MOISTURE INFLUX.

.AVIATION...FOR MCCARRAN...LIGHT RAIN SHOWERS EXPECTED OVER THE AREA
INTO EARLY THIS EVENING WITH MAINLY PARTLY TO MOSTLY CLOUDY SKIES
OVERNIGHT. THUNDERSTORMS ARE EXPECTED TO REMAIN WELL EAST OF THE
AREA TONIGHT AND AFFECT MAINLY THE PEACH SPRINGS AND MORMON MESA
CORRIDORS. CIGS DOWN TO 5-6K FEET AT TIMES THIS EVENING AND MAINLY
ABOVE 10K FEET OVERNIGHT. MORE SCATTERED THUNDERSTORMS ARE EXPECTED
TUESDAY AFTERNOON AS THE AREA IS EXPECTED TO SEE MORE SUN.
THUNDERSTORMS COULD PRODUCE HEAVY RAIN AND GUSTY WINDS OVER 30 KTS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...ISOLATED TO SCATTERED THUNDERSTORMS THIS EVENING OVER
PORTIONS OF MOHAVE COUNT WITH GENERAL LIGHT TO MODERATE SHOWERS OVER
THE REMAINDER OF THE AREA...MAINLY WEST OF INTERSTATE 15. THESE
SHOWERS WILL GRADUALLY DISSIPATE OVERNIGHT. CIGS DOWN TO 5K FEET
FEET UNDER ANY SHOWERS THIS EVENING AND HIGHER MOUNTAIN PEAKS WILL
BE OBSCURED. SOME CLEARING IS EXPECTED OVERNIGHT. WITH MORE SUN
EXPECTED TUESDAY THUNDERSTORMS WILL BE MORE SCATTERED AND PRODUCE
HEAVY RAIN AND GUSTY WINDS UP TO 40 KTS.
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...FLASH FLOOD WATCH THROUGH TUESDAY EVENING FOR NVZ015>022.
AZ...FLASH FLOOD WATCH THROUGH TUESDAY EVENING FOR AZZ001>003-036.
CA...FLASH FLOOD WATCH THROUGH TUESDAY EVENING FOR CAZ522>527.
&&

GORELOW/ADAIR

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
529 AM PDT MON AUG 26 2013

AZZ001>003-036-CAZ522>527-NVZ015>022-270700-
NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS-
LAKE MEAD NATIONAL RECREATION AREA-DEATH VALLEY NATIONAL PARK-
WESTERN MOJAVE DESERT-EASTERN MOJAVE DESERT-MORONGO BASIN-
CADIZ BASIN-SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
LINCOLN COUNTY-NORTHEAST CLARK COUNTY-
WESTERN CLARK AND SOUTHERN NYE COUNTY-SHEEP RANGE-
SPRING MOUNTAINS-LAS VEGAS VALLEY-SOUTHERN CLARK COUNTY-
529 AM PDT MON AUG 26 2013 /529 AM MST MON AUG 26 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
ARIZONA...SOUTHEAST CALIFORNIA AND SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

MOISTURE FROM FORMER TROPICAL STORM IVO WILL BE PULLED ACROSS THE
REGION TODAY AND TONIGHT. NUMEROUS SHOWERS AND THUNDERSTORMS WILL
PERSIST KEEPING AN ELEVATED THREAT OF FLASH FLOODING THROUGH THIS
EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

MOIST AND UNSTABLE AIR WILL LINGER TUESDAY AND WEDNESDAY FOR A
CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS EACH DAY WITH
LOCALIZED HEAVY RAIN SHOWERS AND FLASH FLOODING POSSIBLE. THERE IS
POTENTIAL FOR ANOTHER INFLUX OF TROPICAL MOISTURE THURSDAY AND
FRIDAY FROM THE REMNANTS OF TROPICAL STORM FERNAND WHICH IS
CURRENTLY IN THE GULF OF MEXICO. THIS WOULD BRING AN UPSWING IN
SHOWERS AND THUNDERSTORMS LATE THURSDAY INTO FRIDAY THEN MOIST AND
UNSTABLE AIR WILL KEEP A CHANCE OF AFTERNOON AND EVENING
THUNDERSTORMS OVER MOST OF THE REGION NEXT WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY. MEANWHILE... SPOTTERS ARE
ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING
TO STANDARD OPERATING PROCEDURES.

CAZ519>521-NVZ014-270700-
EASTERN SIERRA SLOPES-OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY-
ESMERALDA AND CENTRAL NYE COUNTY-
529 AM PDT MON AUG 26 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CALIFORNIA AND
SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED
ACROSS SOUTHERN INYO AND CENTRAL NYE COUNTIES THIS AFTERNOON AND
TONIGHT. LOCALIZED HEAVY RAIN AND FLASH FLOODING WILL BE A
POSSIBILITY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

COVERAGE OF SHOWERS AND THUNDERSTORMS WILL EXPAND ACROSS NORTHERN
INYO AND ESMERALDA COUNTIES TUESDAY AS RESIDUAL MOISTURE FROM
FORMER TROPICAL STORM IVO MOVES OVERHEAD. MOISTURE WILL REMAIN IN
PLACE FOR ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS
EACH DAY THROUGH SATURDAY. THE PRIMARY HAZARD WILL BE LOCALIZED
HEAVY RAIN AND POSSIBLE FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

JA

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAS VEGAS NV
238 PM PDT MON AUG 26 2013

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

1209 PM     FLASH FLOOD      11 W MOHAVE VALLEY      34.92N 114.77W
08/25/2013                   SAN BERNARDINO     CA   NEWSPAPER

            *** 1 FATAL *** A 77 YEAR OLD FEMALE WAS KILLED WHEN THE
            WHITE 2009 HYUNDAI SONATA SHE WAS DRIVING WAS SWEPT AWAY
            BY FLASH FLOODING. THE CAR WAS TRAVELING ALONG US 95
            NORTH OF INTERSTATE 40 WHEN IT ENCOUNTERED FLOWING WATER
            AT THE SACRAMENTO WASH. US 95 WAS CLOSED FROM INTERSTATE
            40 TO THE NV LINE AFTER THE INCIDENT DUE TO ROADWAY
            FLOODING. UPDATED TO ADD DETATILS OF THE FATALITY.

&&

METZGER