Alert archive / Nevada / Flash Flood Warnings in 2011

Flash Flood Warning 9, NWS Las Vegas, NV

July 4, 2011Esmeralda County, Nye County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 4, 2011, 4:35 PM PDT for Esmeralda County, Nye County, Nevada. It was in force for 115 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 4, 2011, 4:35 PM PDT (23:35 UTC)
Expired: Jul 4, 2011, 6:30 PM PDT
In force: 115 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Flood severity: None

Counties Esmeralda County, NV, Nye County, NV

The radar

The San Joaquin Valley radar (KHNX), 240 km from the middle of the area, began a volume at 23:39 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, 11.6 hours before the alert went out and 192 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 159 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 2163 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: -21 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.

700 
WGUS55 KVEF 042335
FFWVEF
NVC009-023-050130-
/O.NEW.KVEF.FF.W.0009.110704T2335Z-110705T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
435 PM PDT MON JUL 4 2011

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ESMERALDA COUNTY IN SOUTH CENTRAL NEVADA...
  WEST CENTRAL NYE COUNTY IN SOUTH CENTRAL NEVADA...

* UNTIL 630 PM PDT.

* AT 430 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM NEAR GOLD POINT...OR 10 MILES
  EAST OF LIDA. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY
  STATIONARY.

* LOCATIONS IMPACTED INCLUDE...GOLD POINT...GOLDFIELD...LIDA...
  LIDA  JUNCTION...SCOTTYS JUNCTION... GOLDFIELD RV PARK AND
  PORTIONS OF INTERSTATE 95..STATE ROUTE 267 AND STATE ROUTE 266.

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 TWITTER #NWSVEGAS.

CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY
RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF
FLASH FLOODING IS OBSERVED.

&&

LAT...LON 3741 11773 3790 11716 3737 11706 3728 11695
      3695 11712

$$

JENSEN

2 follow-up statements

076 
WGUS75 KVEF 050031
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
531 PM PDT MON JUL 4 2011

NVC009-023-050130-
/O.CON.KVEF.FF.W.0009.000000T0000Z-110705T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-NYE NV-
531 PM PDT MON JUL 4 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM PDT FOR WEST
CENTRAL NYE AND SOUTHEASTERN ESMERALDA COUNTIES...

AT 521 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING.  THIS STORM WAS
LOCATED NEAR GOLD POINT...OR 10 MILES SOUTHEAST OF LIDA. THE
THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...GOLD POINT...GOLDFIELD...LIDA...  LIDA  
JUNCTION...SCOTTYS JUNCTION... GOLDFIELD RV PARK AND   PORTIONS OF 
INTERSTATE 95..STATE ROUTE 267 AND STATE ROUTE 266.

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 TWITTER #NWSVEGAS.

CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY
RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF
FLASH FLOODING IS OBSERVED.

&&

LAT...LON 3741 11773 3790 11716 3737 11706 3728 11695
      3695 11712

$$

JENSEN

181 
WGUS75 KVEF 050126
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
626 PM PDT MON JUL 4 2011

NVC009-023-050131-
/O.EXP.KVEF.FF.W.0009.000000T0000Z-110705T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-NYE NV-
626 PM PDT MON JUL 4 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM PDT FOR WEST CENTRAL
NYE AND SOUTHEASTERN ESMERALDA COUNTIES...

THUNDERSTORMS ARE DECREASING IN THE WARNED AREA AND WILL ALLOW THE 
FLASH FLOOD WARNING TO EXPIRE AS OF 630 PM PDT.

HOWEVER...WATER WILL BE FLOWING THROUGH THE NORMALLY DRY WASHES 
THROUGH THE EVENING HOURS. THIS WILL ESPECIALLY BE TRUE ALONG 
HIGHWAY 267 FROM THE CALIFORNIA STATE LINE TO THE COUNTY BORDER 
BETWEEN ESMERALDA AND NYE. TRAVELERS IN THIS AREA AS WELL AS OTHERS 
ENGAGED IN OUTDOOR ACTIVITY SHOULD BE AWARE THAT FLOWING WATER MAY 
BE ENCOUNTERED IN THE ABOVE MENTIONED WASHES. IN ADDITION...WATER 
MAY POND IN THE BONNIE CLAIRE FLAT AREA...MAKING IT TREACHEROUS FOR 
OFF ROAD VEHICLES.

LAT...LON 3741 11773 3790 11716 3737 11706 3728 11695
      3695 11712

$$

JENSEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 6:41 PM PDT	Flash Flood Warning	VEF	Clark	2 hr
Jul 3, 6:53 PM PDT	Flash Flood Warning	VEF	Clark	64 min
Jul 3, 7:06 PM PDT	Severe Thunderstorm Warning	VEF	Clark	54 min
Jul 3, 7:40 PM PDT	Flash Flood Warning	VEF	Clark	95 min
Jul 3, 9:46 PM PDT	Areal Flood Advisory	VEF		119 min
Jul 4, 3:48 PM PDT	Flash Flood Warning	VEF	Esmeralda, Lincoln, Nye	117 min

Nearby

Flash Flood Warnings in Nevada, 2011 Every flash flood warning in 2011

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.