Alert archive / Nevada / Flash Flood Warnings in 2014

Flash Flood Warning 9, NWS Las Vegas, NV

July 5, 2014Clark County, Nye County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 5, 2014, 11:19 PM PDT for Clark County, Nye County, Nevada. It was in force for 3 hr. 1 report 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
Jul 5, 2014, 11:19 PM PDT (06:19 UTC)
Expired
Jul 6, 2014, 2:15 AM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

Counties Clark County, NV, Nye County, NV

The radar

The Las Vegas radar (KESX), 87 km from the middle of the area, began a volume at 06:21 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

TimeReportWhereRemark
Jul 6, 1:00 AM PDTFLASH FLOOD5 E Mt. Charleston, NVCLARK COUNTY FLOOD CONTROL DISTRICT REPORTED THAT A DEBRIS FLOW KNOCKED THE GATE TO THE GRIFFITH PEAK TRAILHEAD OFF ITS HINGES. AT LEAST 200 FEET OF DEBRIS CROSSED HARRIS SPRINGS ROAD MAKING IT IMPASSIBLE. THE EVENT TIME IS AN ESTIMATE.

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

The nearest sounding before it

Las Vegas, NV (KVEF), launched 00:00Z, 6.3 hours before the alert went out and 20 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-pSkew-T log-p diagram, Las Vegas, NV at 00:00Z on 2014-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 00:00Z on 2014-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
152 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
2750 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

088 
WGUS55 KVEF 060619
FFWVEF
NVC003-023-060915-
/O.NEW.KVEF.FF.W.0009.140706T0619Z-140706T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1119 PM PDT SAT JUL 5 2014

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME SOUTH CENTRAL NYE COUNTY IN SOUTH CENTRAL NEVADA...
  WEST CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 215 AM PDT

* AT 1117 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR KYLE CANYON CAMPGROUND...OR
  NEAR MT. CHARLESTON. THE STORM PRODUCING FLASH FLOODING WAS NEARLY
  STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  MT. CHARLESTON...KYLE CANYON CAMPGROUND...FLETCHER VIEW
  CAMPGROUND...MARY JANE FALLS CAMPGROUND...LONE MOUNTAIN AND
  CENTENNIAL HILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAIN IS FALLING ON THE CARPENTER ONE BURN AREA. WATER LEVELS WILL 
RISE VERY RAPIDLY...LEADING TO MUD AND DEBRIS FLOWS IN AND 
DOWNSTREAM OF THE BURN AREA.

&&

LAT...LON 3615 11591 3627 11573 3630 11557 3637 11535
      3627 11524 3612 11560 3602 11570

$$

DSB
2 follow-up statements
097 
WGUS75 KVEF 060724
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1224 AM PDT SUN JUL 6 2014

NVC003-023-060915-
/O.CON.KVEF.FF.W.0009.000000T0000Z-140706T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-NYE NV-
1224 AM PDT SUN JUL 6 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM PDT FOR
EXTREME SOUTH CENTRAL NYE AND WEST CENTRAL CLARK COUNTIES...

AT 1213 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THE THUNDERSTORM OVER THE CARPENTER 1 BURN AREA HAS WEAKENED. 
HOWEVER...RADAR ESTIMATED BETWEEN ONE AND ONE AND HALF INCHES OF 
RAIN FELL OVER THE BURN AREA SO RUNOFF WILL LIKE CONTINUE INTO THE 
EARLY MORNING HOURS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAIN HAS FALLEN ON THE CARPENTER 1 BURN AREA. WATER LEVELS 
WILL RISE VERY RAPIDLY...LEADING TO MUD AND DEBRIS FLOWS IN AND 
DOWNSTREAM OF THE BURN AREA.

&&

LAT...LON 3615 11591 3627 11573 3630 11557 3637 11535
      3627 11524 3612 11560 3602 11570

$$

BP
000 
WGUS75 KVEF 060857
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
157 AM PDT SUN JUL 6 2014

NVC003-023-060900-
/O.CAN.KVEF.FF.W.0009.000000T0000Z-140706T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-NYE NV-
157 AM PDT SUN JUL 6 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME SOUTH
CENTRAL NYE AND WEST CENTRAL CLARK COUNTIES...

HEAVY RAINFALL THAT WAS FALLING OVER THE CARPENTER 1 BURN AREA HAS 
ENDED. THE THREAT OF ADDITIONAL FLASH FLOODING OR POTENTIAL DEBRIS 
FLOWS IN RAINBOW CANYON HAS PASSED. AN AUTOMATED GAGE IN RAINBOW 
CANYON MEASURED NEARLY ONE INCH OF RAIN BETWEEN 11 PM AND MIDNIGHT 
LATE SATURDAY EVENING.   

LAT...LON 3615 11591 3627 11573 3630 11557 3637 11535
      3627 11524 3612 11560 3602 11570

$$

BP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 5:02 PM PDTFlash Flood WarningVEFNye118 min
Jul 6, 2:25 PM PDTAreal Flood AdvisoryVEFClark3 hr
Jul 6, 3:09 PM PDTFlash Flood WarningVEFClark3 hr
Jul 6, 3:12 PM PDTFlash Flood WarningVEFClark3 hr
Jul 6, 3:22 PM PDTFlash Flood WarningVEFClark113 min
Jul 6, 3:51 PM PDTAreal Flood AdvisoryVEFLincoln3 hr

Nearby

Flash Flood Warnings in Nevada, 2014Every 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.