Alert archive / Nevada / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 4, NWS Reno, NV

July 30, 2011Churchill County, Lyon County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Jul 30, 2011, 5:24 PM PDT for Churchill County, Lyon County, Nevada. It was in force for 36 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 30, 2011, 5:24 PM PDT (00:24 UTC)
Expired: Jul 30, 2011, 6:00 PM PDT
In force: 36 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

Counties Churchill County, NV, Lyon County, NV

The radar

The Reno radar (KRGX), 43 km from the middle of the area, began a volume at 00:27 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 00:00Z, 0.4 hours before the alert went out and 77 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: 47 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 3271 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -1 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.

595 
WUUS55 KREV 310024
SVRREV
NVC001-019-310100-
/O.NEW.KREV.SV.W.0004.110731T0024Z-110731T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
524 PM PDT SAT JUL 30 2011

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CHURCHILL COUNTY IN WEST CENTRAL NEVADA...
  EXTREME NORTH CENTRAL LYON COUNTY IN WESTERN NEVADA...

* UNTIL 600 PM PDT

* AT 522 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 NEAR
  DESERT PEAK...OR 23 MILES NORTH OF LAHONTAN RESERVOIR...AND MOVING
  NORTHEAST AT 10 MPH. 

* LOCATIONS AFFECTED INCLUDE...INTERSTATE 80 NORTHEAST OF FERNLEY WILL 
  BE AFFECTED BY THIS STORM.

LAT...LON 3987 11909 3997 11904 4001 11899 4000 11890
      4000 11889 3973 11889 3971 11909
TIME...MOT...LOC 0023Z 247DEG 7KT 3979 11904

$$

SNYDER

2 follow-up statements

703 
WWUS55 KREV 310045
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
545 PM PDT SAT JUL 30 2011

NVC019-310052-
/O.CAN.KREV.SV.W.0004.000000T0000Z-110731T0100Z/
LYON NV-
545 PM PDT SAT JUL 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL LYON
COUNTY IS CANCELLED...

LAT...LON 3981 11901 3989 11905 3997 11904 4000 11899
      3999 11889 3986 11889
TIME...MOT...LOC 0042Z 247DEG 7KT 3980 11900

$$

NVC001-310100-
/O.CON.KREV.SV.W.0004.000000T0000Z-110731T0100Z/
CHURCHILL NV-
545 PM PDT SAT JUL 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR NORTHWESTERN CHURCHILL COUNTY...

AT 540 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. HAIL TO THE SIZE OF MARBLES IS ALSO POSSIBLE WITH 
THIS STORM. THIS STORM WAS LOCATED OVER NORTHWESTERN CHURCHILL
COUNTY...OR 24 MILES NORTH OF LAHONTAN RESERVOIR...MOVING NORTHEAST
AT 10 MPH.

LOCATIONS AFFECTED INCLUDE...INTERSTATE 80 ABOUT 20 MILES NORTHEAST OF 
FERNLEY.

LAT...LON 3981 11901 3989 11905 3997 11904 4000 11899
      3999 11889 3986 11889
TIME...MOT...LOC 0042Z 247DEG 7KT 3980 11900

$$

SNYDER

645 
WWUS55 KREV 310058
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
558 PM PDT SAT JUL 30 2011

NVC001-310105-
/O.EXP.KREV.SV.W.0004.000000T0000Z-110731T0100Z/
CHURCHILL NV-
558 PM PDT SAT JUL 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHURCHILL COUNTY
WILL EXPIRE AT 600 PM PDT...

THE STORM THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAS 
WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. 
HOWEVER...GUSTY WINDS TO 40 MPH...MODERATE TO HEAVY RAIN...AND 
OCCASIONAL LIGHTNING ARE STILL POSSIBLE WITH STORMS. 

LAT...LON 3981 11901 3989 11905 3997 11904 4000 11899
      3999 11889 3986 11889
TIME...MOT...LOC 0055Z 247DEG 7KT 3981 11897

$$

SNYDER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 1:41 PM PDT	Special Weather Statement	REV	Lyon	94 min
Jul 31, 3:41 PM PDT	Special Weather Statement	REV	Pershing	89 min
Jul 31, 4:03 PM PDT	Areal Flood Advisory	REV	Churchill	3 hr

Nearby

Severe Thunderstorm Warnings in Nevada, 2011 Every severe thunderstorm 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; radar from the NEXRAD Level II archive.