Alert archive / Nevada / Flash Flood Warnings in 2012

Flash Flood Warning 52, NWS Las Vegas, NV

July 16, 2012Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 16, 2012, 6:36 PM PDT for Lincoln County, Nevada. It was in force for 114 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
Jul 16, 2012, 6:36 PM PDT (01:36 UTC)
Expired
Jul 16, 2012, 8:30 PM PDT
In force
114 min
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Lincoln County, NV

The radar

The Cedar City radar (KICX), 147 km from the middle of the area, began a volume at 01:38 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, 1.6 hours before the alert went out and 199 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 2012-07-17Temperature 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 00:00Z on 2012-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.19395878Sfc1 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
4029 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
-2 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.

429 
WGUS55 KVEF 170136
FFWVEF
NVC017-170330-
/O.NEW.KVEF.FF.W.0052.120717T0136Z-120717T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
636 PM PDT MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL LINCOLN COUNTY IN SOUTH CENTRAL NEVADA...

* UNTIL 830 PM PDT.

* AT 629 PM PDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  FROM A THUNDERSTORM NEAR PIOCHE. THE STORM PRODUCING FLASH FLOODING
  WAS NEARLY STATIONARY. WATER WAS FLOWING FROM CURB TO CURB AND UP 
  OVER THE SIDEWALKS ON THE MAIN STREET IN PIOCH. WATER WAS ENTERING 
  SOME BUSINESSES.

* LOCATIONS IMPACTED INCLUDE...

  PIOCHE AND HIGHWAY 93 AND OTHER ROADWAYS IN THE IMMEDIATE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3803 11456 3803 11434 3784 11434 3784 11456

$$

JH
2 follow-up statements
419 
WGUS75 KVEF 170226
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
726 PM PDT MON JUL 16 2012

NVC017-170330-
/O.CON.KVEF.FF.W.0052.000000T0000Z-120717T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NV-
726 PM PDT MON JUL 16 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM PDT FOR EAST
CENTRAL LINCOLN COUNTY...

AT 721 PM PDT...RADAR CONTINUED TO SHOW A COUPLE OF THUNDERSTORMS IN 
THE FLASH FLOOD WARNING AREA. THE FIRST STORM WAS OVER THE PATTERSON 
WASH NORTHEAST OF PIOCHE. THE SECOND STORM WAS JUST WEST OF PIOCHE. 
THESE STORMS WILL CONTINUE TO MOVE TO THE NORTHEAST. NO OTHER STORMS 
WERE APPROACHING THE AREA AS OF 721 PM SO RAINFALL MAY BE OVER BY 8 
PM. 

LOCATIONS IMPACTED INCLUDE...
PIOCHE...HIGHWAY 93...ROUTE 322 AND OTHER ROADWAYS IN THE PIOCHE 
AREA.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3803 11456 3803 11434 3784 11434 3784 11456

$$

JH
559 
WGUS75 KVEF 170323
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
823 PM PDT MON JUL 16 2012

NVC017-170331-
/O.EXP.KVEF.FF.W.0052.000000T0000Z-120717T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NV-
823 PM PDT MON JUL 16 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 830 PM PDT FOR EAST CENTRAL
LINCOLN COUNTY...

THERE HAS BEEN NO RAINFALL WITHN THE WARNING AREA SINCE ABOUT 8 PM. 
ADDITIONAL STORMS ARE NOT EXPECTED TONIGHT. ANY FLOODING WHICH 
OCCURRED SHOULD RECEDE. 

LAT...LON 3803 11456 3803 11434 3784 11434 3784 11456

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 5:59 PM PDTSevere Thunderstorm WarningVEFLincoln46 min
Jul 16, 6:11 PM PDTAreal Flood AdvisoryVEFLincoln26 min

Nearby

Flash Flood Warnings in Nevada, 2012Every flash flood warning in 2012

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.