Alert archive / Nevada / Flash Flood Warnings in 2016

Flash Flood Warning 69, NWS Las Vegas, NV

August 3, 2016Clark County, Lincoln County, Nevada; Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2016, 7:52 PM PDT for Clark County, Lincoln County, Nevada; Mohave County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 3, 2016, 7:52 PM PDT (02:52 UTC)
Expired
Aug 3, 2016, 10:45 PM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

Counties Mohave County, AZ, Clark County, NV, Lincoln County, NV

The radar

The Cedar City radar (KICX), 130 km from the middle of the area, began a volume at 02:53 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.

The nearest sounding before it

Las Vegas, NV (KVEF), launched 00:00Z, 2.9 hours before the alert went out and 146 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 2016-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1079 joules per kilogram.LCLEL10008507005003002001001 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 2016-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
1079 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
2895 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

945 
WGUS55 KVEF 040252
FFWVEF
AZC015-NVC003-017-040545-
/O.NEW.KVEF.FF.W.0069.160804T0252Z-160804T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
752 PM PDT WED AUG 3 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL MOHAVE COUNTY IN NORTHWESTERN ARIZONA...
  NORTHEASTERN CLARK COUNTY IN SOUTHERN NEVADA...
  SOUTHEASTERN LINCOLN COUNTY IN SOUTH CENTRAL NEVADA...

* UNTIL 1045 PM PDT/1045 PM MST/

* AT 748 PM PDT/748 PM MST/...DOPPLER RADAR INDICATED A LARGE AREA
  OF THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS SOUTHEAST LINCOLN...
  NORTHEAST CLARK AND NORTH CENTRAL MOHAVE COUNTIES. THESE STORMS
  WERE ALL MOVING TO THE SOUTH AT AROUND 10 MPH. THIS FLASH FLOODING
  IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MESQUITE...BEAVER DAM...LITTLEFIELD...VIRGIN RIVER GORGE...MOAPA
  VALLEY...VIRGIN RIVER CAMPGROUND...BUNKERVILLE AND CARP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3664 11403 3661 11447 3709 11458 3718 11406
      3700 11405 3700 11357 3699 11354

$$

SC
2 follow-up statements
676 
WGUS75 KVEF 040436
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
936 PM PDT WED AUG 3 2016

AZC015-NVC003-017-040545-
/O.CON.KVEF.FF.W.0069.000000T0000Z-160804T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-LINCOLN NV-
936 PM PDT WED AUG 3 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM PDT/1045
PM MST/ FOR NORTH CENTRAL MOHAVE...NORTHEASTERN CLARK AND
SOUTHEASTERN LINCOLN COUNTIES...

AT 934 PM PDT/934 PM MST/...DOPPLER RADAR INDICATED THUNDERSTORMS
WERE DECREASING ACROSS THE WARNED AREA. FLASH FLOODING IS
STILL POSSIBLE DUE TO RUNOFF FROM RAIN EARLIER.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MESQUITE...BEAVER DAM...LITTLEFIELD...VIRGIN RIVER GORGE...
MOAPA VALLEY...VIRGIN RIVER CAMPGROUND...BUNKERVILLE AND CARP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3664 11403 3661 11447 3709 11458 3718 11406
      3700 11405 3700 11357 3699 11354

$$

JH
906 
WGUS75 KVEF 040539
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1039 PM PDT WED AUG 3 2016

AZC015-NVC003-017-040548-
/O.EXP.KVEF.FF.W.0069.000000T0000Z-160804T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-LINCOLN NV-
1039 PM PDT WED AUG 3 2016

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL MOHAVE...NORTHEASTERN
CLARK AND SOUTHEASTERN LINCOLN COUNTIES WILL EXPIRE AT 1045 PM
PDT/1045 PM MST/...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3664 11403 3661 11447 3709 11458 3718 11406
      3700 11405 3700 11357 3699 11354

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 5:56 PM PDTSevere Thunderstorm WarningVEFClark34 min
Aug 3, 6:04 PM PDTSevere Thunderstorm WarningVEFClark26 min
Aug 3, 6:34 PM PDTAreal Flood AdvisoryVEFClark3 hr
Aug 3, 9:13 PM PDTSevere Thunderstorm WarningVEFClark62 min
Aug 3, 10:21 PM PDTAreal Flood AdvisoryVEFClark3 hr
Aug 3, 10:58 PM PDTSevere Thunderstorm WarningVEFClark32 min
Aug 4, 12:26 AM PDTFlash Flood WarningVEFClark3 hr
Aug 4, 2:55 AM PDTAreal Flood AdvisoryVEFClark2 hr
Aug 4, 12:07 AM PDTFlash Flood WarningVEFMohave113 min
Aug 4, 12:09 AM PDTFlash Flood WarningVEFMohave2 hr
Aug 4, 12:34 AM PDTFlash Flood WarningVEFMohave116 min
Aug 4, 1:31 AM PDTFlash Flood WarningVEFMohave119 min
Aug 4, 1:47 AM PDTAreal Flood WarningVEFMohave12 hr

Nearby

Flash Flood Warnings in Nevada, 2016Flash Flood Warnings in Arizona, 2016Every flash flood warning in 2016

Sources

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