Alert archive / Nevada / Flash Flood Warnings in 2016

Flash Flood Warning 6, NWS Las Vegas, NV

May 7, 2016Clark County, Nevada

NWS Las Vegas, NV issued this flash flood warning at May 7, 2016, 5:15 PM PDT for Clark County, Nevada. It was in force for 2 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
May 7, 2016, 5:15 PM PDT (00:15 UTC)
Expired
May 7, 2016, 7:15 PM PDT
In force
2 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Clark County, NV

The radar

The Las Vegas radar (KESX), 95 km from the middle of the area, began a volume at 00:16 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
May 7, 6:00 PM PDTFLASH FLOOD4 W Overton Beach, NVTHE PARK SERVICE REPORTED MUD AND DEBIS ON NORTHSHORE ROAD NEAR MILE MARKER 46. IT WAS ALSO REPORTED THAT ST THOMAS ROAD IS CLOSED DUE TO FLOODING. TIME IS ESTIMATED BASED ON RADAR.

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, 0.3 hours before the alert went out and 98 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 2016-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 2016-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
8 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1538 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

569 
WGUS55 KVEF 080015
FFWVEF
NVC003-080215-
/O.NEW.KVEF.FF.W.0006.160508T0015Z-160508T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
515 PM PDT SAT MAY 7 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 715 PM PDT

* AT 513 PM PDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  BETWEEN OVERTON AND LAKE MEAD AND BETWEEN VALLEY OF FIRE STATE
  PARK AND NORTH SHORE ROAD. STATE HIGHWAY 169 AND VALLEY OF FIRE
  HIGHWAY ARE IMPASSABLE AT THIS TIME.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  OVERTON...MOAPA VALLEY...ECHO BAY CAMPGROUND...OVERTON BEACH...VALLEY
  OF FIRE AND ECHO BAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3656 11433 3629 11438 3639 11464 3657 11457

$$

CMS
2 follow-up statements
915 
WGUS75 KVEF 080058
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
558 PM PDT SAT MAY 7 2016

NVC003-080215-
/O.CON.KVEF.FF.W.0006.000000T0000Z-160508T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
558 PM PDT SAT MAY 7 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR
NORTHEASTERN CLARK COUNTY...

AT 555 PM PDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
BETWEEN OVERTON AND VALLEY OF FIRE STATE PARK. STATE HIGHWAY 169
REMAINS IMPASSABLE SOUTH OF OVERTON. ALTHOUGH THE HEAVY RAIN HAS
ENDED...FLOODING FROM RUNOFF WILL CONTINUE EARLY THIS EVENING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OVERTON...MOAPA VALLEY...ECHO BAY CAMPGROUND...OVERTON BEACH...VALLEY OF
FIRE AND ECHO BAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3656 11433 3629 11438 3639 11464 3657 11457

$$

CMS
121 
WGUS75 KVEF 080223
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
723 PM PDT SAT MAY 7 2016

NVC003-080233-
/O.EXP.KVEF.FF.W.0006.000000T0000Z-160508T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
723 PM PDT SAT MAY 7 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN CLARK COUNTY HAS
EXPIRED...

FLOOD WATERS HAVE RECEDED NEAR VALLEY OF FIRE AND OVERTON...AND ARE
NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR PROPERTY. PLEASE
CONTINUE TO HEED ANY ROAD CLOSURES.

LAT...LON 3656 11433 3629 11438 3639 11464 3657 11457

$$

JA

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.