Alert archive / Nevada / Flash Flood Warnings in 2016

Flash Flood Warning 87, NWS Las Vegas, NV

August 11, 2016Clark County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Aug 11, 2016, 12:55 PM PDT for Clark County, Nevada. It was in force for 95 min. 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 11, 2016, 12:55 PM PDT (19:55 UTC)
Expired
Aug 11, 2016, 2:30 PM PDT
In force
95 min
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Clark County, NV

The radar

The Las Vegas radar (KESX), 24 km from the middle of the area, began a volume at 19:55 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 12:00Z, 7.9 hours before the alert went out and 108 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 12:00Z on 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4242 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

567 
WGUS55 KVEF 111955
FFWVEF
NVC003-112130-
/O.NEW.KVEF.FF.W.0087.160811T1955Z-160811T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1255 PM PDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

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

* UNTIL 230 PM PDT

* AT 1254 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS NIPTON ROAD WEST OF SEARCHLIGHT. FLASH FLOODING
  IS EXPECTED TO BEGIN SHORTLY.

* FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTH CENTRAL
  CLARK COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3554 11495 3541 11493 3545 11510 3557 11510

$$

MORGAN
2 follow-up statements
696 
WGUS75 KVEF 112037
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
137 PM PDT THU AUG 11 2016

NVC003-112130-
/O.CON.KVEF.FF.W.0087.000000T0000Z-160811T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
137 PM PDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM PDT FOR
SOUTH CENTRAL CLARK COUNTY...

AT 135 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS OVER NIPTON
ROAD WEST OF SEARCHLIGHT WERE FINALLY BEGINNING TO WEAKEN. HEAVY
RAIN HAS FALLEN INTO SEVERAL TRIBUTARIES OF THE PIUTE WASH WHICH
REACH NIPTON ROAD BETWEEN MILE MARKERS 12 AND 16.

FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTH CENTRAL
CLARK COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3554 11495 3541 11493 3545 11510 3557 11510

$$

MORGAN
839 
WGUS75 KVEF 112126
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
226 PM PDT THU AUG 11 2016

NVC003-112135-
/O.EXP.KVEF.FF.W.0087.000000T0000Z-160811T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
226 PM PDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL CLARK COUNTY WILL EXPIRE
AT 230 PM PDT...

THE HEAVY RAIN HAS ENDED. WATER MAY STILL BE FLOWING IN THE
AREA. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3554 11495 3541 11493 3545 11510 3557 11510

$$

WOLCOTT

Nearby

Flash Flood Warnings in Nevada, 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.