Alert archive / Nevada / Tornado Warnings in 2008

Tornado Warning 4, NWS Reno, NV

July 21, 2008Churchill County, Nevada

NWS Reno, NV issued this tornado warning at Jul 21, 2008, 3:56 PM PDT for Churchill County, Nevada. It was in force for 49 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 21, 2008, 3:56 PM PDT (22:56 UTC)
Expired: Jul 21, 2008, 4:45 PM PDT
In force: 49 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

County Churchill County, NV

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 10.9 hours before the alert went out and 18 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: 26 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 1658 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 58 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.

000 
WFUS55 KREV 212259
TORREV
NVC001-212345-
/O.NEW.KREV.TO.W.0004.080721T2256Z-080721T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RENO NV
356 PM PDT MON JUL 21 2008

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CHURCHILL COUNTY IN WEST CENTRAL NEVADA...

* UNTIL 445 PM PDT

* AT 352 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 14
  MILES SOUTH OF STILLWATER...OR 18 MILES SOUTHEAST OF FALLON...
  MOVING NORTHEAST AT 17 MPH.

* THE TORNADO WILL BE NEAR...
  6 MILES EAST OF STILLWATER BY 440 PM PDT...
  9 MILES WEST OF MOUNT LINCOLN BY 445 PM PDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND STRONG WINDS OF UP TO 60 MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3962 11854 3970 11827 3960 11809 3942 11823
      3925 11848 3930 11860
TIME...MOT...LOC 2256Z 196DEG 15KT 3933 11850

$$

RM

2 follow-up statements

000 
WWUS55 KREV 212314
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
412 PM PDT MON JUL 21 2008

NVC001-212345-
/O.CON.KREV.TO.W.0004.000000T0000Z-080721T2345Z/
CHURCHILL NV-
412 PM PDT MON JUL 21 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR CENTRAL
CHURCHILL COUNTY...

AT 409 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. 
THIS TORNADO WAS LOCATED 7 MILES NORTHWEST OF SAND MOUNTAIN...OR
ABOUT 17 MILES EAST OF FALLON...MOVING NORTH AT 17 MPH.

THE TORNADO WILL BE NEAR...
  6 MILES EAST OF STILLWATER BY 435 PM PDT...
  9 MILES WEST OF MOUNT LINCOLN BY 445 PM PDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
GOLF BALL SIZED SIZE HAIL AND WIND GUSTS TO 60 MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3962 11854 3970 11827 3960 11809 3942 11823
      3925 11848 3930 11860
TIME...MOT...LOC 2312Z 196DEG 15KT 3939 11848

$$

RM

000 
WWUS55 KREV 212342
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
440 PM PDT MON JUL 21 2008

NVC001-212350-
/O.EXP.KREV.TO.W.0004.000000T0000Z-080721T2345Z/
CHURCHILL NV-
440 PM PDT MON JUL 21 2008

...THE TORNADO WARNING FOR CENTRAL CHURCHILL COUNTY EXPIRES AT 445 PM
PDT...

THE STORMS THAT EARLIER PROMPTED THE TORNADO WARNING HAS
WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
HOWEVER...THIS STORM REMAINS SEVERE AND IS CAPABLE OF PRODUCING 
GOLF BALL SIZED HAIL...GUSTY WINDS OF UP TO 60 MPH...DEADLY
LIGHTNING...AND BRIEF HEAVY RAINS. A SEVERE THUNDERSTORM WARNING WILL 
BE FORTHCOMING ON THIS THIS STORM.

IF YOU OBSERVED ANY WIND DAMAGE...LARGE HAIL...OR FLOODING FROM THE
STORM EARLIER...REPORT IT TO THE NATIONAL WEATHER SERVICE IN RENO.
CALL OUR OFFICE AT 775-673-8100. YOUR REPORTS HELP US IMPROVE OUR
WARNING PROCESS.

LAT...LON 3962 11854 3970 11827 3960 11809 3942 11823
      3925 11848 3930 11860
TIME...MOT...LOC 2340Z 196DEG 15KT 3950 11844

$$

RM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 3:39 AM PDT	Severe Thunderstorm Warning	REV	Mineral	28 min
Jul 21, 6:07 AM PDT	Flash Flood Watch	REV	Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more	21 hr
Jul 21, 2:07 PM PDT	Severe Thunderstorm Warning	REV	Lyon, Storey	38 min
Jul 21, 2:10 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Lyon, Mineral	35 min
Jul 21, 2:28 PM PDT	Severe Thunderstorm Warning	REV	Douglas, Lyon	32 min
Jul 21, 2:42 PM PDT	Tornado Warning	REV	Churchill, Lyon, Mineral	33 min
Jul 21, 3:07 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Lyon, Storey	38 min
Jul 21, 3:12 PM PDT	Tornado Warning	REV	Churchill	48 min
Jul 21, 3:23 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Lyon, Washoe	37 min
Jul 21, 3:37 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	38 min
Jul 21, 3:40 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Lyon	50 min
Jul 21, 3:49 PM PDT	Tornado Warning	REV	Churchill, Lyon	41 min
Jul 21, 4:03 PM PDT	Severe Thunderstorm Warning	REV	Churchill	42 min
Jul 21, 4:10 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	35 min
Jul 21, 4:19 PM PDT	Tornado Warning	REV	Churchill	41 min
Jul 21, 4:39 PM PDT	Severe Thunderstorm Warning	REV	Washoe	36 min
Jul 21, 4:46 PM PDT	Severe Thunderstorm Warning	REV	Mineral	44 min
Jul 21, 4:47 PM PDT	Severe Thunderstorm Warning	REV	Douglas, Lyon	43 min
Jul 21, 4:48 PM PDT	Severe Thunderstorm Warning	REV	Churchill, Pershing	57 min

Nearby

Tornado Warnings in Nevada, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.