Alert archive / Nevada / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 3, NWS Reno, NV

July 29, 2011Washoe County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Jul 29, 2011, 7:55 PM PDT for Washoe County, Nevada. It was in force for 50 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 29, 2011, 7:55 PM PDT (02:55 UTC)
Expired: Jul 29, 2011, 8:45 PM PDT
In force: 50 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

County Washoe County, NV

The radar

The Reno radar (KRGX), 10 km from the middle of the area, began a volume at 02:58 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, 2.9 hours before the alert went out and 118 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: 19 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 3922 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -27 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.

436 
WUUS55 KREV 300255
SVRREV
NVC031-300345-
/O.NEW.KREV.SV.W.0003.110730T0255Z-110730T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
755 PM PDT FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WASHOE COUNTY IN WESTERN NEVADA...

* UNTIL 845 PM PDT

* AT 748 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM WADSWORTH TO SPARKS...AND MOVING
  NORTHWEST AT 25 MPH.

* LOCATIONS AFFECTED INCLUDE...SPANISH SPRINGS...NIXON...SUTCLIFFE...
  PYRAMID LAKE AND VIRGINIA PEAK.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE
INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING. STAY OFF LANDLINE TELEPHONES AND UNPLUG
ANY SENSITIVE ELECTRONICS.

THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. WATCH FOR
PONDING WATER ON AREA ROADWAYS. DRIVERS SHOULD SLOW DOWN IF
ENCOUNTERING HEAVY RAINS...AND REMEMBER TO TURN ON THEIR HEADLIGHTS.

LAT...LON 3970 11920 3962 11986 4006 11997 4005 11947
TIME...MOT...LOC 0253Z 144DEG 23KT 3971 11927 3962 11981

$$
MJD

2 follow-up statements

241 
WWUS55 KREV 300330
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
830 PM PDT FRI JUL 29 2011

NVC031-300345-
/O.CON.KREV.SV.W.0003.000000T0000Z-110730T0345Z/
WASHOE NV-
830 PM PDT FRI JUL 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM PDT
FOR SOUTHERN WASHOE COUNTY...

* AT 823 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED   
  TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING    
  QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE  
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM WADSWORTH TO       
  SPARKS...AND MOVING NORTHWEST AT 20 MPH.

* LOCATIONS AFFECTED INCLUDE...NIXON...SUTCLIFFE...SPANISH           
  SPRINGS...PYRAMID LAKE AND VIRGINIA PEAK.

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.

THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL. WATCH FOR
PONDING WATER ON AREA ROADWAYS. DRIVERS SHOULD SLOW DOWN IF
ENCOUNTERING HEAVY RAINS...AND REMEMBER TO TURN ON THEIR HEADLIGHTS.

LAT...LON 3970 11920 3962 11986 4006 11997 4005 11947
TIME...MOT...LOC 0327Z 144DEG 23KT 3989 11944 3980 11998

$$

HOON

292 
WWUS55 KREV 300349
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
849 PM PDT FRI JUL 29 2011

NVC031-300356-
/O.EXP.KREV.SV.W.0003.000000T0000Z-110730T0345Z/
WASHOE NV-
849 PM PDT FRI JUL 29 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WASHOE COUNTY HAS
EXPIRED...

THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE
MOVED NORTH AND BEGUN TO WEAKEN...THEREFORE THE WARNING WILL BE 
ALLOWED TO EXPIRE.

STRONG THUNDERSTORMS WITH HEAVY RAIN AND SMALL HAIL...AND WIND 
GUSTS TO 40 MPH...WILL CONTINUE MOVING NORTH TOWARD THE WEST SHORE 
OF PYRAMID LAKE INCLUDING SUTCLIFFE THROUGH 930 PM. 

LAT...LON 3970 11920 3962 11986 4006 11997 4005 11947
TIME...MOT...LOC 0330Z 144DEG 23KT 3991 11946 3982 12000

$$
MJD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 5:10 PM PDT	Special Weather Statement	REV	Douglas	50 min
Jul 29, 5:43 PM PDT	Areal Flood Advisory	REV	Douglas	2 hr
Jul 29, 5:52 PM PDT	Special Weather Statement	REV	Douglas	23 min
Jul 29, 6:14 PM PDT	Special Weather Statement	REV	Douglas, Lyon	91 min
Jul 29, 6:34 PM PDT	Special Weather Statement	REV		41 min
Jul 29, 6:53 PM PDT	Special Weather Statement	REV	Douglas	37 min
Jul 29, 7:16 PM PDT	Severe Thunderstorm Warning	REV	Storey, Washoe	44 min
Jul 29, 9:25 PM PDT	Special Weather Statement	REV	Storey	110 min
Jul 30, 2:55 AM PDT	Flash Flood Watch	REV	Lyon, Mineral	38 hr
Jul 30, 1:47 PM PDT	Special Weather Statement	REV	Lyon, Mineral	2 hr
Jul 30, 3:22 PM PDT	Flash Flood Warning	REV	Lyon	3 hr
Jul 30, 4:40 PM PDT	Special Weather Statement	REV	Douglas	65 min
Jul 30, 4:58 PM PDT	Areal Flood Advisory	REV	Douglas	48 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.