Alert archive / California / Flash Flood Warnings in 2011

Flash Flood Warning 10, NWS Las Vegas, NV

July 4, 2011Inyo County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 4, 2011, 5:46 PM PDT for Inyo County, California. It was in force for 119 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, 5:46 PM PDT (00:46 UTC)
Expired
Jul 4, 2011, 7:45 PM PDT
In force
119 min
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, 0.8 hours before the alert went out and 155 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 2011-07-05Temperature 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 2011-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2613 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
104 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.

560 
WGUS55 KVEF 050046
FFWVEF
CAC027-050245-
/O.NEW.KVEF.FF.W.0010.110705T0046Z-110705T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 745 PM PDT.

* AT 539 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER CENTRAL INYO COUNTY...OR 8
  MILES SOUTH OF STOVEPIPE WELLS. THE STORM PRODUCING VERY HEAVY RAIN
  WAS NEARLY STATIONARY.

* A STORM PRODUCING VERY HEAVY RAIN WILL REMAIN OVER AND NEAR THE    
  PANAMINT MOUNTAINS IN DEATH VALLEY. STATE ROUTE 190 BETWEEN        
  STOVEPIPE WELLS AND PANAMINT SPRINGS IS PARTICULARLY VUNERABLE TO 
  FLASH FLOODING FROM THIS STORM.

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 3655 11732 3657 11714 3635 11713 3639 11741

$$

JJ
2 follow-up statements
971 
WGUS75 KVEF 050144
FFSVEF

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

CAC027-050245-
/O.CON.KVEF.FF.W.0010.000000T0000Z-110705T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
644 PM PDT MON JUL 4 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM PDT FOR
CENTRAL INYO COUNTY...

AT 626 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED TWO TO 
THREE FEET OF WATER OVER STATE ROUTE 190 AT MILE MAKER 79. THE  
THUNDERSTORMS PRODUCING THE HEAVY RAIN WERE LOCATED OVER THE 
PANAMINT MOUNTAINS AND ARE NEARLY STATIONARY.

THE STORMS PRODUCING THE HEAVY RAIN ARE WEAKENING BUT THE RUNOFF 
WILL CONTINUE UNTIL 745 PM THIS EVENING AND CONTINUE TO CAUSE 
FLOODING ON STATE ROUTE 160.

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 3655 11732 3657 11714 3635 11713 3639 11741

$$

JJ
835 
WGUS75 KVEF 050243
FFSVEF

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

CAC027-050252-
/O.EXP.KVEF.FF.W.0010.000000T0000Z-110705T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
743 PM PDT MON JUL 4 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 745 PM PDT FOR CENTRAL INYO
COUNTY...

CALIFORNIA HIGHWAY PATROL REPORTED AT 659 PM THAT THE WATER LEVEL ON 
STATE ROUTE 190 WAS DROPPING AND NATIONAL WEATHER SERVICE RADAR HAS 
INDICATED THE THUNDERSTORM OVER THE PANAMINT RANGE HAS WEAKENED. 
THEREFORE THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. 

LAT...LON 3655 11732 3657 11714 3635 11713 3639 11741

$$

STACHELSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:52 PM PDTFlash Flood WarningVEFInyo113 min
Jul 5, 1:37 PM PDTFlash Flood WarningVEFSan Bernardino113 min
Jul 5, 1:48 PM PDTFlash Flood WarningVEFSan Bernardino3 hr
Jul 5, 2:01 PM PDTSevere Thunderstorm WarningVEFSan Bernardino33 min
Jul 5, 2:06 PM PDTSevere Thunderstorm WarningVEFSan Bernardino24 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.