Alert archive / Nevada / Flash Flood Warnings in 2012

Flash Flood Warning 45, NWS Las Vegas, NV

July 15, 2012Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 15, 2012, 3:01 PM PDT for Lincoln County, Nevada. It was in force for 6 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
Jul 15, 2012, 3:01 PM PDT (22:01 UTC)
Expired
Jul 15, 2012, 9:00 PM PDT
In force
6 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Lincoln County, NV

The radar

The Cedar City radar (KICX), 152 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 172 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°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.

710 
WGUS55 KVEF 152201
FFWVEF
NVC017-160100-
/O.NEW.KVEF.FF.W.0045.120715T2201Z-120716T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
301 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 600 PM PDT.

* AT 250 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING FROM A THUNDERSTORM NEAR CALIENTE. THE STORM PRODUCING
  FLASH FLOODING WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  PANACA...CATHEDRAL GORGE STATE PARK AND THE ENTRANCE TO BEAVER DAM 
  STATE PARK.

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 3787 11475 3787 11432 3749 11434 3751 11476

$$

STACHELSKI
3 follow-up statements
828 
WGUS55 KVEF 160054
FFWVEF
NVC017-160400-
/O.EXT.KVEF.FF.W.0045.000000T0000Z-120716T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS EXTENDED THE

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

* UNTIL 900 PM PDT.

* AT 550 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED HIGHWAY   
  93 WAS CLOSED AT CALIENTE SUMMIT DUE TO FLASH FLOODING AND THAT    
  PART OF THE ROAD TO BEAVER DAM STATE PARK WAS WASHED OUT.          
  THUNDERSTORMS CONTINUE TO MOVE NORTH AT 5 TO 10 MPH AND WERE       
  PRODUCING HEAVY RAINFALL WITH LOCALIZED AMOUNTS IN EXCESS OF A     
  HALF AN INCH. THIS WILL WORSEN ANY EARLIER FLASH FLOODING AND ALSO 
  COULD RESULT IN NEW FLASH FLOODING. HIGHWAY 93 BETWEEN MILE        
  MARKERS 76 AND 114 WILL BE ONE OF THE AREAS IMPACTED BY ADDITIONAL 
  THUNDERSTORMS. 

* LOCATIONS IMPACTED INCLUDE...
  PANACA AND CATHEDRAL GORGE STATE PARK.

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 3787 11475 3787 11432 3749 11434 3751 11476

$$

STACHELSKI
922 
WGUS75 KVEF 160254
FFSVEF

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

NVC017-160400-
/O.CON.KVEF.FF.W.0045.000000T0000Z-120716T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NV-
754 PM PDT SUN JUL 15 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM PDT FOR
CENTRAL LINCOLN COUNTY...

AT 749 PM PDT....RADAR INDICATED SOME LIGHT RAIN STILL IN THE AREA. 
IN ADDITION...SOME RUNOFF COULD STILL BE OCCURRING FROM EARLIER 
RAIN. 

LOCATIONS IMPACTED INCLUDE...
PANACA AND CATHEDRAL GORGE STATE PARK AND HIGHWAY 93.

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 3787 11475 3787 11432 3749 11434 3751 11476

$$

JH
001 
WGUS75 KVEF 160354
FFSVEF

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

NVC017-160403-
/O.EXP.KVEF.FF.W.0045.000000T0000Z-120716T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NV-
854 PM PDT SUN JUL 15 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 900 PM PDT FOR CENTRAL
LINCOLN COUNTY...

THERE HAS BEEN NO RAINFALL IN THE WARNING AREA FOR AWHILE AND NO 
RECENT REPORTS OF NEW FLASH FLOODING. ANY FLOODING FROM EARLIER IN 
THE DAY IS EXPECTED TO CONTINUE RECEDING.

LAT...LON 3787 11475 3787 11432 3749 11434 3751 11476

$$

JH

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, 1:58 PM PDTFlash Flood WarningVEFLincoln82 min
Jul 15, 2:16 PM PDTSevere Thunderstorm WarningVEFClark44 min
Jul 15, 2:41 PM PDTAreal Flood AdvisoryVEFClark3 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.