Alert archive / California / Flash Flood Warnings in 2012

Flash Flood Warning 53, NWS Las Vegas, NV

July 22, 2012Inyo County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 22, 2012, 2:50 PM PDT for Inyo County, California. It was in force for 60 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 22, 2012, 2:50 PM PDT (21:50 UTC)
Expired: Jul 22, 2012, 3:50 PM PDT
In force: 60 min
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Flood severity: None

County Inyo County, CA

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 9.8 hours before the alert went out and 241 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2900 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 97 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.

844 
WGUS55 KVEF 222150
FFWVEF
CAC027-222345-
/O.NEW.KVEF.FF.W.0053.120722T2150Z-120722T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
250 PM PDT SUN JUL 22 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 445 PM PDT.

* AT 240 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR WESTGARD PASS...OR 17 MILES
  NORTHEAST OF BIG PINE. THE STORM PRODUCING FLASH FLOODING WAS
  NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  ROUTE 168 AND ANCIENT BRISTLECONE VC.

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.

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 3746 11817 3746 11801 3746 11785 3744 11782
      3723 11810 3735 11825

$$

JH

1 follow-up statement

142 
WGUS75 KVEF 222250
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
350 PM PDT SUN JUL 22 2012

CAC027-222259-
/O.CAN.KVEF.FF.W.0053.000000T0000Z-120722T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
350 PM PDT SUN JUL 22 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHWESTERN INYO
COUNTY...

THE FLASH FLOOD WARNING FOR HIGHWAY 168 NEAR WESTGARD PASS HAS BEEN 
CANCELED. THUNDERSTORMS WITH HEAVY RAIN THAT PROMPTED THE WARNING 
HAVE WEAKENED. 

LAT...LON 3746 11817 3746 11801 3746 11785 3744 11782
      3723 11810 3735 11825

$$

PIERCE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 2:27 PM PDT	Areal Flood Advisory	VEF	San Bernardino	94 min
Jul 22, 3:32 PM PDT	Areal Flood Advisory	VEF	Inyo	62 min

Nearby

Flash Flood Warnings in California, 2012 Every 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.