Alert archive / California / Flash Flood Warnings in 2011

Flash Flood Warning 39, NWS Las Vegas, NV

July 7, 2011Inyo County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 7, 2011, 5:57 PM PDT for Inyo County, California. It was in force for 3 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 7, 2011, 5:57 PM PDT (00:57 UTC)
Expired
Jul 7, 2011, 9:00 PM PDT
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Inyo County, CA

The nearest sounding before it

Las Vegas, NV (KVEF), launched 00:00Z, 1.0 hours before the alert went out and 178 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 2011-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 2011-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
3 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
2858 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
121 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.

301 
WGUS55 KVEF 080057
FFWVEF
CAC027-080400-
/O.NEW.KVEF.FF.W.0039.110708T0057Z-110708T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
557 PM PDT THU JUL 7 2011

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL INYO COUNTY IN EASTERN CALIFORNIA...

* UNTIL 900 PM PDT.

* AT 553 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM 6 MILES NORTHWEST OF MESQUITE
  SPRINGS CAMPGROUND...OR 31 MILES SOUTH OF LIDA. THE STORM PRODUCING
  FLASH FLOODING WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...MESQUITE SPRINGS CAMPGROUND AND
  SCOTTYS CASTLE ALONG WITH DEATH VALLEY ROAD...RACETRACK VALLEY 
  ROAD AND NORTH HIGHWAY SOUTH OF SCOTTYS CASTLE.

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.

&&

LAT...LON 3701 11762 3715 11741 3687 11705 3671 11730

$$

JH
2 follow-up statements
612 
WGUS75 KVEF 080240
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
740 PM PDT THU JUL 7 2011

CAC027-080400-
/O.CON.KVEF.FF.W.0039.000000T0000Z-110708T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
740 PM PDT THU JUL 7 2011

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

AT 735 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS MOVING THROUGH THE AREA NEAR MESQUITE SPRINGS 
CAMPGROUND AND SCOTTYS CASTLE...OR 28 MILES NORTHWEST OF STOVEPIPE 
WELLS. THE THREAT OF FLASH FLOODING CONTINUES.

LOCATIONS IMPACTED INCLUDE...MESQUITE SPRINGS CAMPGROUND AND SCOTTYS
CASTLE.

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.

&&

LAT...LON 3701 11762 3715 11741 3687 11705 3671 11730

$$

JH
912 
WGUS75 KVEF 080353
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
853 PM PDT THU JUL 7 2011

CAC027-080401-
/O.EXP.KVEF.FF.W.0039.000000T0000Z-110708T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
853 PM PDT THU JUL 7 2011

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

THUNDERSTORMS HAVE MOVED EAST OF THE AREA AROUND SCOTTYS CASTLE AND 
THE MESQUITE SPRINGS CAMPGROUND. ANY FLOODING WHICH MAY HAVE 
OCCURRED IN THIS AREA AND ALONG DEATH VALLEY ROAD SHOULD BE 
SUBSIDING. THE THREAT OF ADDITIONAL FLOODING HAS ENDED.

LAT...LON 3701 11762 3715 11741 3687 11705 3671 11730

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 6:05 PM PDTAreal Flood AdvisoryVEFSan Bernardino56 min
Jul 8, 1:24 PM PDTAreal Flood AdvisoryVEFSan Bernardino3 hr
Jul 8, 2:26 PM PDTFlash Flood WarningVEFSan Bernardino79 min
Jul 8, 3:10 PM PDTFlash Flood WarningVEFInyo2 hr
Jul 8, 3:32 PM PDTAreal Flood AdvisoryVEFInyo118 min
Jul 8, 3:35 PM PDTFlash Flood WarningVEFSan Bernardino66 min
Jul 8, 4:18 PM PDTAreal Flood AdvisoryVEFInyo117 min

Nearby

Flash Flood Warnings in California, 2011Every 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.