Alert archive / California / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 68, NWS Las Vegas, NV

October 11, 2012Inyo County, California

NWS Las Vegas, NV issued this severe thunderstorm warning at Oct 11, 2012, 6:47 PM PDT for Inyo County, California. It was in force for 12 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
Oct 11, 2012, 6:47 PM PDT (01:47 UTC)
Expired
Oct 11, 2012, 6:59 PM PDT
In force
12 min
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon

County Inyo County, CA

The nearest sounding before it

Las Vegas, NV (KVEF), launched 00:00Z, 1.8 hours before the alert went out and 132 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 2012-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 305 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 2012-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939587897Sfc1 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
305 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1141 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

424 
WUUS55 KVEF 120147
SVRVEF
CAC027-120230-
/O.NEW.KVEF.SV.W.0068.121012T0147Z-121012T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
647 PM PDT THU OCT 11 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL INYO COUNTY IN EASTERN CALIFORNIA...

* UNTIL 730 PM PDT.

* AT 643 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN 
EXCESS   OF 60 MPH AND NICKEL SIZE HAIL.  THIS STORM WAS LOCATED 
OVER CENTRAL INYO COUNTY...OR 6 MILES SOUTH OF FURNACE CREEK...AND 
WAS MOVING NORTHWEST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL INYO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL THAT CAN CAUSE INJURY
AND DAMAGE PROPERTY. IN ADDITION...STRONG WINDS AND LIGHTNING ARE
LIKELY. LIGHTNING CAN KILL! TAKE SHELTER IN A STURDY BUILDING. IF IT
IS SAFE TO DO SO...TAKE APPROPRIATE ACTIONS TO PROTECT VEHICLES AND
PROPERTY.

REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS
NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER
HASHTAG...NWSVEGAS.

&&

LAT...LON 3638 11716 3652 11709 3640 11681 3629 11686
TIME...MOT...LOC 0146Z 122DEG 13KT 3637 11688

$$

KENNEDY
1 follow-up statement
197 
WWUS55 KVEF 120159
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
659 PM PDT THU OCT 11 2012

CAC027-120210-
/O.CAN.KVEF.SV.W.0068.000000T0000Z-121012T0230Z/
INYO CA-
659 PM PDT THU OCT 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL INYO COUNTY IS
CANCELLED...

LAT...LON 3638 11716 3652 11709 3640 11681 3629 11686
TIME...MOT...LOC 0200Z 122DEG 13KT 3640 11693

$$

KENNEDY

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 5:02 PM PDTFlash Flood WarningVEFInyo88 min
Oct 11, 5:25 PM PDTFlash Flood WarningVEFInyo95 min
Oct 11, 5:25 PM PDTSevere Thunderstorm WarningVEFInyo35 min
Oct 11, 5:52 PM PDTSevere Thunderstorm WarningVEFInyo53 min
Oct 11, 7:28 PM PDTFlash Flood WarningVEFInyo92 min
Oct 11, 8:35 PM PDTFlash Flood WarningVEFSan Bernardino115 min
Oct 12, 12:03 AM PDTFlash Flood WarningVEFInyo87 min

Nearby

Severe Thunderstorm Warnings in California, 2012Every severe thunderstorm 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.