Alert archive / Nevada / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Reno, NV

August 9, 2012Churchill County, Nevada

NWS Reno, NV issued this severe thunderstorm warning at Aug 9, 2012, 7:05 PM PDT for Churchill County, Nevada. It was in force for 25 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 9, 2012, 7:05 PM PDT (02:05 UTC)
Expired: Aug 9, 2012, 7:30 PM PDT
In force: 25 min
Issued by: NWS Reno, NV
Area: Storm-based polygon

County Churchill County, NV

The radar

The Reno radar (KRGX), 66 km from the middle of the area, began a volume at 02:06 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.

What was reported inside it

Time	Report	Where	Remark
Aug 9, 7:09 PM PDT	TSTM WND GST 48	Fallon Station, NV	THUNDERSTORM AT FALLON NAS WITH WINDS REPORTED AT 48MPH AND 0.13 INCHES RAIN.
Aug 9, 7:24 PM PDT	TSTM WND GST 77	8 W Fallon, NV	REMOTE SENSOR WEST OF RAGTOWN NEAR HIGHWAY 50 REPORTED SOUTH WINDS AT 25G77 MPH.
Aug 9, 7:25 PM PDT	TSTM WND DMG	Fallon, NV	SHERIFFS OFFICE REPORTED A 4 TO 5 FOOT DIAMETER TREE DOWN ON ST. CLAIR STREET, SOUTHWEST OF DOWNTOWN FALLON. NO REPORTS OF PROPERTY DAMAGE AT THIS TIME.
Aug 9, 7:25 PM PDT	TSTM WND GST 70	1 Sw Fallon, NV	THUNDERSTORM WITH HEAVY RAIN WITH SOME PONDING OF WATER ON LOCAL STREETS. SMALL BRANCHES BROKEN ON NEARBY TREES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Reno, NV (KREV), launched 00:00Z, 2.1 hours before the alert went out and 47 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: 346 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 3541 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 42 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.

604 
WUUS55 KREV 100205
SVRREV
NVC001-100230-
/O.NEW.KREV.SV.W.0005.120810T0205Z-120810T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
705 PM PDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CHURCHILL COUNTY IN WEST CENTRAL NEVADA...
  THIS INCLUDES THE CITY OF FALLON...

* UNTIL 730 PM PDT

* AT 700 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 7
  MILES SOUTHWEST OF FALLON...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS AFFECTED INCLUDE...FALLON AND STILLWATER.

THIS STORM IS ALSO CAPABLE OF PRODUCING HEAVY RAINFALL. WATCH FOR 
PONDING OF WATER ON ROADS. DRIVERS SHOULD SLOW DOWN IF ENCOUNTERING 
HEAVY RAIN TO AVOID HYDROPLANING...AND REMEMBER TO TURN ON THEIR 
HEADLIGHTS.

LAT...LON 3976 11875 3950 11839 3923 11882 3940 11901
TIME...MOT...LOC 0204Z 221DEG 17KT 3940 11882

$$

2 follow-up statements

056 
WWUS55 KREV 100217
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
717 PM PDT THU AUG 9 2012

NVC001-100230-
/O.CON.KREV.SV.W.0005.000000T0000Z-120810T0230Z/
CHURCHILL NV-
717 PM PDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM PDT
FOR WEST CENTRAL CHURCHILL COUNTY...

AT 714 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS 
6 MILES SOUTH OF FALLON...MOVING NORTHEAST AT 20 MPH.

* LOCATIONS AFFECTED INCLUDE...FALLON...FALLON STATION AND 
  STILLWATER.

LAT...LON 3976 11875 3950 11839 3923 11882 3940 11901
TIME...MOT...LOC 0216Z 237DEG 16KT 3940 11878

$$

358 
WWUS55 KREV 100228
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
728 PM PDT THU AUG 9 2012

NVC001-100238-
/O.EXP.KREV.SV.W.0005.000000T0000Z-120810T0230Z/
CHURCHILL NV-
728 PM PDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CHURCHILL COUNTY
WILL EXPIRE AT 730 PM PDT...

THE STORM THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAS
WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
HOWEVER...STRONG THUNDERSTORMS WILL REMAIN IN THE AREA THROUGH 830 
PM...CAPABLE OF PRODUCING GUSTY WINDS...DEADLY LIGHTNING...AND BRIEF 
HEAVY RAINS.

LAT...LON 3976 11875 3950 11839 3923 11882 3940 11901
TIME...MOT...LOC 0228Z 237DEG 16KT 3943 11874

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 5:08 PM PDT	Special Weather Statement	REV	Mineral	52 min
Aug 9, 6:17 PM PDT	Special Weather Statement	REV	Churchill	43 min
Aug 9, 6:53 PM PDT	Special Weather Statement	REV	Churchill	52 min
Aug 9, 7:48 PM PDT	Special Weather Statement	REV	Churchill	57 min
Aug 9, 8:34 PM PDT	Special Weather Statement	REV	Pershing	56 min
Aug 10, 1:21 PM PDT	Special Weather Statement	REV	Mineral	24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.