Alert archive / Nevada / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 8, NWS Reno, NV

August 31, 2012Churchill County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Aug 31, 2012, 1:56 PM PDT for Churchill County, Nevada. It was in force for 34 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: Aug 31, 2012, 1:56 PM PDT (20:56 UTC)
Expired: Aug 31, 2012, 2:30 PM PDT
In force: 34 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

County Churchill County, NV

The radar

The Elko radar (KLRX), 118 km from the middle of the area, began a volume at 20:59 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

Reno, NV (KREV), launched 12:00Z, 8.9 hours before the alert went out and 65 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: 3186 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 154 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.

735 
WUUS55 KREV 312056
SVRREV
NVC001-312130-
/O.NEW.KREV.SV.W.0008.120831T2056Z-120831T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
156 PM PDT FRI AUG 31 2012

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CHURCHILL COUNTY IN WEST CENTRAL NEVADA...

* UNTIL 230 PM PDT

* AT 154 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER
  EXTREME EAST CENTRAL CHURCHILL COUNTY...OR 15 MILES NORTH OF NEW
  PASS SUMMIT...AND MOVING NORTH AT 20 MPH.

PREPARE NOW FOR HIGH WINDS...HAIL...HEAVY RAIN AND DEADLY LIGHTNING.
DURING A SEVERE THUNDERSTORM...SEEK SHELTER INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

LAT...LON 3982 11748 3969 11746 3963 11749 3969 11772
      4000 11760 3999 11751 3991 11745 3986 11745
TIME...MOT...LOC 2056Z 199DEG 18KT 3975 11757

$$

JHW

2 follow-up statements

300 
WWUS55 KREV 312110
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
210 PM PDT FRI AUG 31 2012

NVC001-312130-
/O.CON.KREV.SV.W.0008.000000T0000Z-120831T2130Z/
CHURCHILL NV-
210 PM PDT FRI AUG 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM PDT
FOR NORTHEASTERN CHURCHILL COUNTY...

AT 206 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED OVER EXTREME NORTHEASTERN CHURCHILL COUNTY...OR 19 MILES
NORTH OF NEW PASS SUMMIT...MOVING NORTH AT 20 MPH.

LAT...LON 3982 11748 3969 11746 3963 11749 3969 11772
      4000 11760 3999 11751 3991 11745 3986 11745
TIME...MOT...LOC 2110Z 199DEG 18KT 3982 11754

$$

JHW

858 
WWUS55 KREV 312122
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
222 PM PDT FRI AUG 31 2012

NVC001-312132-
/O.EXP.KREV.SV.W.0008.000000T0000Z-120831T2130Z/
CHURCHILL NV-
222 PM PDT FRI AUG 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHURCHILL COUNTY
WILL EXPIRE AT 230 PM PDT...

THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE
MOVED OUT OF THE AREA AND INTO LANDER COUNTY...THEREFORE THE WARNING 
WILL BE ALLOWED TO EXPIRE.

LAT...LON 3982 11748 3969 11746 3963 11749 3969 11772
      4000 11760 3999 11751 3991 11745 3986 11745
TIME...MOT...LOC 2122Z 199DEG 18KT 3988 11751

$$

DF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 2:43 PM PDT	Severe Thunderstorm Warning	REV	Mineral	32 min
Aug 31, 3:02 PM PDT	Special Weather Statement	REV	Churchill	28 min
Aug 31, 3:28 PM PDT	Special Weather Statement	REV		32 min
Aug 31, 3:42 PM PDT	Special Weather Statement	REV	Pershing	63 min

Nearby

Severe Thunderstorm Warnings in Nevada, 2012 Every 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; radar from the NEXRAD Level II archive.