Alert archive / Nevada / Flash Flood Warnings in 2012

Flash Flood Warning 44, NWS Las Vegas, NV

July 15, 2012Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 15, 2012, 1:58 PM PDT for Lincoln County, Nevada. It was in force for 82 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 15, 2012, 1:58 PM PDT (20:58 UTC)
Expired
Jul 15, 2012, 3:20 PM PDT
In force
82 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), 193 km from the middle of the area, began a volume at 21:00 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, 9.0 hours before the alert went out and 196 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 2012-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 335 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 12:00Z on 2012-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
335 J/kg
Mixed-layer CIN
-212 J/kg
Mixed-layer LCL
1353 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
8 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.

873 
WGUS55 KVEF 152058
FFWVEF
NVC017-152300-
/O.NEW.KVEF.FF.W.0044.120715T2058Z-120715T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
158 PM PDT SUN JUL 15 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 400 PM PDT.

* AT 155 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER CENTRAL LINCOLN COUNTY...
  OR 31 MILES WEST OF PIOCHE. THE STORM PRODUCING VERY HEAVY RAIN WAS
  NEARLY STATIONARY AND WAS LOCATED ALONG HIGHWAY 318 BETWEEN MILE   
  MARKERS 38 AND 48..

* LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. 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 3800 11487 3800 11510 3806 11507 3806 11500
      3817 11500 3818 11499 3818 11487

$$

STACHELSKI
1 follow-up statement
880 
WGUS75 KVEF 152220
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
320 PM PDT SUN JUL 15 2012

NVC017-152228-
/O.CAN.KVEF.FF.W.0044.000000T0000Z-120715T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NV-
320 PM PDT SUN JUL 15 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL LINCOLN 
COUNTY FOR THE AREA ALONG HIGHWAY 318 BETWEEN MILE MARKERS 38 AND 
48...

RADAR SHOWS THUNDERSTORMS HAVE MOVED OUT OF THE AREA. ANY EARLIER 
RUNOFF SHOULD HAVE ENDED. THEREFORE THE FLASH FLOOD WARNING WILL BE 
ALLOWED TO EXPIRE FOR THIS AREA.

LAT...LON 3800 11487 3800 11510 3806 11507 3806 11500
      3817 11500 3818 11499 3818 11487

$$

STACHELSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 6:02 PM PDTAreal Flood AdvisoryVEFClark116 min
Jul 14, 8:41 PM PDTAreal Flood AdvisoryVEFClark16 min
Jul 14, 8:56 PM PDTFlash Flood WarningVEFClark109 min
Jul 15, 10:14 AM PDTFlash Flood WatchVEFClark, Lincoln, Nye11 hr
Jul 15, 10:30 AM PDTFlash Flood WarningVEFLincoln4 hr
Jul 15, 1:12 PM PDTFlash Flood WarningVEFClark2 hr
Jul 15, 1:24 PM PDTFlash Flood WarningVEFNye4 hr
Jul 15, 2:16 PM PDTSevere Thunderstorm WarningVEFClark44 min
Jul 15, 2:41 PM PDTAreal Flood AdvisoryVEFClark3 hr
Jul 15, 3:01 PM PDTFlash Flood WarningVEFLincoln6 hr
Jul 15, 4:40 PM PDTFlash Flood WarningVEFClark65 min
Jul 15, 4:58 PM PDTFlash Flood WarningVEFClark92 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.