Alert archive / Nevada / Flash Flood Warnings in 2014

Flash Flood Warning 159, NWS Las Vegas, NV

September 8, 2014Clark County, Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Sep 8, 2014, 1:17 PM PDT for Clark County, Lincoln County, Nevada. It was in force for 3 hr. 11 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 8, 2014, 1:17 PM PDT (20:17 UTC)
Expired: Sep 8, 2014, 4:15 PM PDT
In force: 3 hr
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Emergency: Flash flood emergency
Flood severity: None

Counties Clark County, NV, Lincoln County, NV

The radar

The Las Vegas radar (KESX), 105 km from the middle of the area, began a volume at 20:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Sep 8, 1:38 PM PDT	FLASH FLOOD	1 Ene Moapa, NV	SR 168 CLOSED BETWEEN COYOTE SPRINGS AND MOAPA DUE TO FLOODING.
Sep 8, 2:10 PM PDT	FLASH FLOOD	Moapa, NV	AT LEAST 20 HOMES WERE DAMAGED AND MANY PEOPLE HAD TO BE EVACUATED WHEN A MAJOR FLASH FLOOD IMPACTED THE MOAPA AREA BEGINNING AROUND 210 PM SEP 8TH. STATE ROUTE 168 WAS DAMAGED AND CLOSED FOR ABOUT 10 HOURS BETWEEN MOAPA AND COYOTE SPRINGS. AT LEAST 160 STUDEN
Sep 8, 3:00 PM PDT	FLASH FLOOD	1 Sw Moapa, NV	THE REID GARDNER POWER GENERATING PLANT PARKING LOT WAS FILLED WITH NEARLY 6 FEET OF FLOODWATER.
Sep 8, 3:00 PM PDT	FLASH FLOOD	2 W Moapa, NV	SEVERAL ROADS ON THE MOAPA PAIUTE TRIBAL RESERVATION WERE FILLED WITH 5 FEET OF SILT. SOME ROADS WERE WASHED OUT AND HOMES AND FIELDS WERE DAMAGED. DAMAGES WERE ESTIMATED AT 250,000 NOT COUNTING DAMAGE TO HOMES.
Sep 8, 3:00 PM PDT	FLASH FLOOD	2 Wsw Moapa, NV	PARTS OF THE UNION PACIFIC RAILROAD TRACK WERE WASHED OUT.
Sep 8, 3:15 PM PDT	FLASH FLOOD	Moapa, NV	HIGHWAY PATROL REPORTS VEHICLES FLOATING DOWN INTERSTATE 15
Sep 8, 3:15 PM PDT	FLASH FLOOD	Moapa, NV	HIGHWAY PATROL REPORTS VEHICLES FLOATING DOWN INTERSTATE 15.
Sep 8, 3:32 PM PDT	FLASH FLOOD	5 Nw Logandale, NV	* 1 INJ * A MAJOR FLASH FLOOD IMPACTED I-15 BETWEEN MILE MARKERS 91 AND 93...NEAR GLENDALE AND MOAPA. SUBSTANTIAL DAMAGE OCCURRED TO BOTH LANES CAUSING THE INTERSTATE TO BE CLOSED FOR REPAIRS FOR AT LEAST 3-4 DAYS. MANY CARS WERE SURROUNDED BY FLOOD WATERS
Sep 8, 3:38 PM PDT	FLASH FLOOD	5 Wnw Moapa, NV	LAW ENFORECEMENT REPORTS HOMES BEING INUNDATED AND EVACUATIONS ARE BEING CONDUCTED IN THE AREA
Sep 8, 3:38 PM PDT	FLASH FLOOD	5 Wnw Moapa, NV	LAW ENFORECEMENT REPORTS HOMES BEING INUNDATED AND EVACUATIONS ARE BEING CONDUCTED IN THE AREA. 190 PEOPLE WERE TAKEN TO SHELTERS FROM THE MOAPA RIVER RESERVATION.
Sep 8, 4:00 PM PDT	FLASH FLOOD	6 Nw Logandale, NV	REPORTS OF SWIFT WATER RESCUES ON INTERSTATE 15. INTERSTATE CLOSED BETWEEN MILE MARKERS 91 AND 93

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 10 storm reports to this flash flood warning; the first came 21 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Las Vegas, NV (KVEF), launched 12:00Z, 8.3 hours before the alert went out and 74 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 162 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1247 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

790 
WGUS55 KVEF 082017
FFWVEF
NVC003-017-082315-
/O.NEW.KVEF.FF.W.0159.140908T2017Z-140908T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
117 PM PDT MON SEP 8 2014

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME SOUTH CENTRAL LINCOLN COUNTY IN SOUTH CENTRAL NEVADA...
  NORTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 415 PM PDT

* AT 110 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SEVERAL THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS NORTHEAST AND
  NORTH CENTRAL CLARK COUNTY. THIS ACTIVITY WAS LOCATED NEAR 
  MOAPA...COYOTE SPRINGS AND APEX. EACH OF THESE STORMS WAS MOVING   
  NORTHEAST AT 5 TO 10 MPH. RAINFALL TOTALS IN EXCESS OF ONE INCH
  PER HOUR ARE POSSIBLE WITH THESE STORMS. THIS WILL RESULT IN
  SEVERAL INCHES OF WATER ALONG WITH MUD AND ROCKS WASHING ACROSS
  LOW SPOTS IN AND AROUND IN MOAPA...ON HIGHWAY 93 NORTH OF APEX
  AND NEAR COYOTE SPRINGS. RUNOFF INTO THE MUDDY RIVER IS ALSO
  LIKELY RESULTING IN RAPID FLOWS. 

* LOCATIONS IMPACTED INCLUDE...
  SR 168
  COYOTE SPRINGS
  MOAPA
  APEX

THIS INCLUDES INTERSTATE 15 BETWEEN MILE MARKERS 63 AND 100.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3686 11499 3684 11443 3661 11445 3635 11485
      3635 11499

$$

STACHELSKI

3 follow-up statements

213 
WGUS75 KVEF 082113
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
213 PM PDT MON SEP 8 2014

NVC003-017-082315-
/O.CON.KVEF.FF.W.0159.000000T0000Z-140908T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-LINCOLN NV-
213 PM PDT MON SEP 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR
EXTREME SOUTH CENTRAL LINCOLN AND NORTH CENTRAL CLARK COUNTIES...

AT 205 PM PDT...THUNDERSTORMS CONTINUE TO PRODUCE HEAVY RAIN FROM 
MOAPA TO HIGHWAY 93 BETWEEN COYOTE SPRINGS AND APEX. HIGHWAY 93 WAS 
REPORTED CLOSED BETWEEN COYOTE SPRINGS AND MOAPA. SIGNIFICANT FLASH 
FLOODING WAS REPORTED IN MOAPA WHERE RADAR ESTIMATES OF OVER TWO 
INCHES ON AN HOUR WERE SHOWN. 

THIS IS A LIFE THREATENING SITUATION. AVOID DRIVING ON ROADS IN 
MOAPA AND ON HIGHWAY 93 BETWEEN APEX AND COYOTE SPRINGS.

LOCATIONS IMPACTED INCLUDE...
MOAPA
HIGHWAY 93 BETWEEN COYOTE SPRINGS AND APEX
HIGHWAY 168 BETWEEN COYOTE SPRINGS AND MOAPA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3686 11499 3684 11443 3661 11445 3635 11485
      3635 11499

$$

STACHELSKI

422 
WGUS75 KVEF 082134
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
234 PM PDT MON SEP 8 2014

NVC003-017-082315-
/O.CON.KVEF.FF.W.0159.000000T0000Z-140908T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-LINCOLN NV-
234 PM PDT MON SEP 8 2014

...FLASH FLOOD EMERGENCY FOR EXTREME SOUTH CENTRAL LINCOLN AND NORTH
CENTRAL CLARK COUNTIES...

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR
EXTREME SOUTH CENTRAL LINCOLN AND NORTH CENTRAL CLARK COUNTIES...

AT 230 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SIGNIFICANT 
AND LIFE THREATENING FLASH FLOODING IN MOAPA. A DAM WAS REPORTED 
BEING WITHIN 3 INCHES OF OVERFILLING. ROADS ARE FLOODED. THIS IS 
LIKELY THE WORST FLASH FLOODING IN MOAPA AND THE MUDDY RIVER AREA 
SINCE THE HISTORIC FLASH FLOOD OF AUGUST 10TH 1981.

THIS IS A FLASH FLOOD EMERGENCY FOR EXTREME SOUTH CENTRAL LINCOLN AND
NORTH CENTRAL CLARK COUNTIES.

LOCATIONS IMPACTED INCLUDE...
MOAPA
APEX
HIGHWAY 168 BETWEEN COYOTE SPRINGS AND MOAPA
HIGHWAY 93 BETWEEN APEX AND COYOTE SPRINGS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT TRAVEL IN THE WARNED AREA. LEAVE ROADS OPEN FOR EMERGENCY
OPERATIONS. THIS IS A LIFE THREATENING SITUATION. MANY ROADWAYS IN
THE AREA ARE IMPASSABLE DUE TO FLASH FLOODING.

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3686 11499 3684 11443 3661 11445 3635 11485
      3635 11499

$$

STACHELSKI

875 
WGUS75 KVEF 082258
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
358 PM PDT MON SEP 8 2014

NVC003-017-082306-
/O.CAN.KVEF.FF.W.0159.000000T0000Z-140908T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-LINCOLN NV-
358 PM PDT MON SEP 8 2014

...THE FLASH FLOOD EMERGENCY FOR EXTREME SOUTH CENTRAL LINCOLN AND 
NORTH CENTRAL CLARK COUNTIES HAS BEEN REPLACED WITH A NEW 
STATEMENT...

SERIOUS AND LIFE THREATENING FLASH FLOODING CONTINUES IN AND AROUND 
MOAPA. DO NOT TRAVEL IN THIS AREA AND LISTEN TO LOCAL EMERGENCY 
OFFICIALS ON ANY ACTIONS. 

LAT...LON 3686 11499 3684 11443 3661 11445 3635 11485
      3635 11499

$$

STACHELSKI

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Sep 8, 9:24 AM PDT, 3 hours 53 minutes earlier.

Area forecast discussion, Sep 8, 9:24 AM PDT, 3 hours 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
924 AM PDT MON SEP 8 2014

.SYNOPSIS...TROPICAL MOISTURE WILL BRING A CONTINUED CHANCE FOR
THUNDERSTORMS TODAY WITH A RISK OF HEAVY RAIN AND FLASH FLOODING. A
CHANCE OF STORMS WILL LINGER TUESDAY AND WEDNESDAY MAINLY EAST OF
LAS VEGAS...THEN DRY WEATHER IS EXPECTED AREAWIDE THURSDAY AND
FRIDAY.
&&

.UPDATE...SPC MESOANALYSIS AND 12Z NAM INDICATE DECENT CAPE AND
INSTABILITY WEST ACROSS ESMERALDA AND NYE COUNTIES AND EASTERN INYO
COUNTY. SOME THUNDERSTORMS HAVE BEEN DEVELOPING ACROSS INYO AND NYE
COUNTIES THIS MORNING. I UPDATED TO INCREASE POPS AND CLOUD COVER
ACROSS THE WESTERN PORTION OF THE FORECAST AREA TO ACCOUNT FOR THESE
LATEST TRENDS. -HARRISON-
&&

.PREV DISCUSSION...
241 AM PDT MON SEP 8 2014

.SHORT TERM...TODAY AND TONIGHT...MAIN CONCERN REMAINS HEAVY RAIN
AND POTENTIAL FOR FLASH FLOODING. PRECIP WAS LIMITED TO SOUTHERN
MOHAVE COUNTY AT 230 AM...BUT SURFACE OBS SHOWED DEWPOINTS IN THE
60S FROM LAS VEGAS SOUTH AND IN THE 50S FOR MUCH OF THE REST OF THE
AREA. PRECIPITABLE WATER SENSORS SHOWED OVER TWO INCHES AT VIDAL
TAPERING DOWN TO AN INCH AND A QUARTER AT DESERT ROCK...WELL ABOVE
NORMAL THANKS TO THE INFLUENCE OF FORMER HURRICANE NORBERT. HIGH
RESOLUTION MODELS CONTINUE TO FOCUS HIGHEST PRECIP AMOUNTS EAST OF A
LINE FROM YUCCA VALLEY TO PAHRUMP TO RACHEL...BUT AM NOT WILLING TO
DROP THE FLASH FLOOD WATCH FOR DEATH VALLEY OR BARSTOW AS THERE ARE
SEVERAL AREAS THERE WHICH CAN FLOOD EVEN WITH RELATIVELY LITTLE RAIN
IF IT FALLS IN A SHORT PERIOD OF TIME. DRIER AIR SHOULD START TO
WORK INTO THE WESTERN CWA OVERNIGHT TONIGHT...WITH PRECIP CHANCES
SLOWLY ERODING FROM WEST TO EAST. POINT TEMPERATURES TODAY WILL BE
HIGHLY DEPENDENT ON CLOUDS AND PRECIP LOCATION/TIMING SO CONFIDENCE
IS LOW.

.LONG TERM...TUESDAY THROUGH SUNDAY.

TUESDAY...THERE HAS BEEN CONSIDERABLE IMPROVEMENT IN THE MODEL
MIXING RATIO [MOISTURE] FIELDS FOR TUESDAY COMPARED TO 24 HOURS AGO.
THE CURRENT GUIDANCE FAVORS THE CHOSEN GUIDANCE FROM LAST NIGHT AND
THUS ONLY MINOR CHANGES WERE NEEDED IN THE FORECAST. MUCH DRIER AIR
IS FORECAST TO PUSH ACROSS THE AREA FROM THE NORTHWEST BEGINNING
MONDAY NIGHT INTO TUESDAY MORNING. AS A RESULT...PRECIPITATION WILL
TAPER OFF FROM WEST TO EAST THROUGH THE DAY. THE BEST CHANCES FOR
PRECIPITATION WILL BE EAST OF A TONOPAH-PAHRUMP-BARSTOW LINE DURING
THE MORNING HOURS...EAST OF A RACHEL-LAS VEGAS-YUCCA VALLEY LINE
DURING THE AFTERNOON AND CONTINUING TO PUSH EAST DURING THE EVENING.
AS FAR AS DYNAMICS ARE CONCERNED A PACIFIC SHORTWAVE AND ASSOCIATED
90KT JET WILL BE PUSHING SOUTHEAST ACROSS THE AREA. ACCORDING TO THE
GFS AND ECMWF SOLUTIONS...LIFT FROM THESE FEATURES IS EXPECTED TO
REACH A MAXIMUM DURING THE MORNING HOURS NORTH OF LAS VEGAS AND
DURING THE AFTERNOON SOUTH OF LAS VEGAS. IT SHOULD BE NOTED THAT THE
NAM IS ROUGHLY 6 HOURS FASTER WITH THIS PROGRESSION. INSTABILITY
LOOKS MARGINAL AT THIS TIME...BUT WITH AMPLE DYNAMICS WE SHOULD SEE
AT LEAST A FEW THUNDERSTORMS. THAT SAID I DON'T SEE A COMPELLING
REASON TO EXTEND THE FLASH FLOOD WATCH JUST YET...WE WILL CONTINUE
TO MONITOR. THERE IS FAIRLY GOOD CONSENSUS THAT AS THE JET SAGS
SOUTH IT WILL CREATE AN AREA OF ENHANCED 0-6KM SHEAR...WITH A
MAXIMUM OF 35-50KTS OVER LINCOLN...NORTHEASTERN CLARK...AND NORTHERN
MOHAVE COUNTY BY 18Z THEN WEAKENING AS IT PUSHES INTO SOUTHERN UTAH
AND NORTHERN ARIZONA DURING THE AFTERNOON. THUS...IF WE DO GET A FEW
STORMS THIS SHEAR COULD SUPPORT A FEW ORGANIZED STORMS IN THESE
AREAS DURING THE DAY. THESE MORE ORGANIZED STORMS COULD PRODUCE
HEAVY RAIN...VERY GUSTY WINDS AND PERHAPS SOME HAIL.

WEDNESDAY THROUGH FRIDAY...LEFT IN JUST A SLIGHT CHANCE OF
PRECIPITATION ACROSS MAINLY SOUTHEASTERN MOHAVE COUNTY WEDNESDAY TO
ACCOUNT FOR ANY RESIDUAL MOISTURE IN PLACE. OTHERWISE DRIER
CONDITIONS AND REBOUNDING TEMPERATURES ARE EXPECTED THROUGH THE
REMAINDER OF THE WEEK.

NEXT WEEKEND...THERE CONTINUES TO BE SOME BACK AND FORTH IN THE
OVERALL PATTERN AND MOISTURE GUIDANCE FOR NEXT WEEKEND. FOR THE
MOMENT HAVE INTRODUCED SOME GHOST AND SLIGHT CHANCE POPS TO THE
FORECAST FOR THE SOUTHEASTERN PORTION OF THE FORECAST AREA. WE WILL
NEED TO CONTINUE TO WATCH AS MODELS COME INTO BETTER AGREEMENT.
&&

.AVIATION...FOR MCCARRAN...THE BEST CHANCE OF THUNDERSTORMS AT THE
TERMINAL TODAY SHOULD BE BETWEEN NOON AND 6 PM...WITH STORMS LIKELY
ONGOING MUCH OF THE DAY IN THE PEACH SPRINGS CORRIDOR AND DEVELOPING
IN THE REMAINING CORRIDORS BY NOON. WINDS WILL BE ERRATIC AND
PRIMARILY DRIVEN BY THUNDERSTORMS. THERE WILL ONLY BE A SLIGHT
CHANCE OF A THUNDERSTORM AT THE TERMINAL TUESDAY...BUT CHANCES WILL
LINGER IN THE PEACH SPRINGS AND MORMON MESA CORRIDORS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...THUNDERSTORM CHANCES WILL BE GREATEST TODAY EAST OF A
LINE FROM YUCCA VALLEY TO TONOPAH...WITH VERY HEAVY RAIN AND LOW
CEILINGS BEING THE MAIN CONCERNS. THUNDERSTORM CHANCES WILL DECREASE
FROM WEST TO EAST TONIGHT AND TUESDAY...AND SHOULD BE LIMITED TO
MOHAVE COUNTY BY WEDNESDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT
HAZARDOUS WEATHER TODAY. SPOTTERS IN MOHAVE COUNTY SHOULD REMAIN
ALERT TUESDAY AND WEDNESDAY.
&&

MORGAN/WOLCOTT

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

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

In the hours before

Local storm report, Sep 8, 10:59 AM PDT, 2 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1059 AM PDT MON SEP 08 2014

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

1051 AM     FLASH FLOOD      5 E MOUNTAIN PASS       35.47N 115.45W
09/08/2014                   SAN BERNARDINO     CA   LAW ENFORCEMENT

            CHP REPORTING LOTS OF LARGE ROCKS AND DEBRIS AT THE
            NIPTON ROAD OFF RAMP NEAR INTERSTATE 15.

&&

CSTUMPF

Local storm report, Sep 8, 11:01 AM PDT, 2 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1101 AM PDT MON SEP 08 2014

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

1040 AM     FLASH FLOOD      SSW OATMAN              35.03N 114.39W
09/08/2014                   MOHAVE             AZ   TRAINED SPOTTER

            SPOTTER REPORTED HALF AN INCH OF RAIN IN 20 MINUTES AND
            MAIN STREET IN OATMAN HAS AT LEAST 6 INCHES OF RAIN
            FLOWING DOWN THE ROAD.

&&

CSTUMPF

Local storm report, Sep 8, 11:18 AM PDT, 1 hour 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1118 AM PDT MON SEP 08 2014

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

1104 AM     FLASH FLOOD      5 E MOUNTAIN PASS       35.47N 115.45W
09/08/2014                   SAN BERNARDINO     CA   LAW ENFORCEMENT

            CHP REPORTS FLOOD WATER MOVING ACROSS NIPTON ROAD NEAR
            INTERSTATE 15 AND NEAR IVANPAH ROAD.

&&

CSTUMPF

Local storm report, Sep 8, 12:54 PM PDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1254 PM PDT MON SEP 08 2014

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

1241 PM     FLASH FLOOD      1 NNW TOPOCK            34.73N 114.48W
09/08/2014                   MOHAVE             AZ   PUBLIC

            WEBCAM SHOWED OVER A FOOT OF MUDDY WATER FLOWING ACROSS
            HIGHWAY 95 AT THE SACRAMENTO WASH. FLOODING IS STILL
            ONGOING.

&&

STACHELSKI

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 7, 5:14 PM PDT	Areal Flood Advisory	VEF	Clark	2 hr
Sep 8, 8:53 AM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Sep 8, 11:04 AM PDT	Areal Flood Advisory	VEF	Nye	3 hr
Sep 8, 11:43 AM PDT	Flash Flood Warning	VEF	Nye	3 hr
Sep 8, 11:45 AM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Sep 8, 12:29 PM PDT	Flash Flood Warning	VEF	Clark	4 hr
Sep 8, 12:34 PM PDT	Flash Flood Warning	VEF	Clark	3 hr
Sep 8, 12:47 PM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Sep 8, 12:55 PM PDT	Areal Flood Advisory	VEF	Lincoln	3 hr
Sep 8, 1:20 PM PDT	Flash Flood Warning	VEF	Clark	3 hr
Sep 8, 1:30 PM PDT	Flash Flood Warning	VEF	Clark	3 hr
Sep 8, 3:08 PM PDT	Flash Flood Warning Emergency	VEF	Clark, Lincoln	6 hr
Sep 8, 3:25 PM PDT	Flash Flood Warning	VEF	Clark	3 hr

Nearby

Flash Flood Warnings in Nevada, 2014 Every flash flood warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.