Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 23, NWS North Platte, NE

August 2, 2012Deuel County, Garden County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 2, 2012, 4:59 PM MDT for Deuel County, Garden County, Nebraska. It was in force for 31 min. 1 report 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 2, 2012, 4:59 PM MDT (22:59 UTC)
Expired: Aug 2, 2012, 5:30 PM MDT
In force: 31 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Deuel County, NE, Garden County, NE

The radar

The North Platte radar (KLNX), 165 km from the middle of the area, began a volume at 23:00 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 2, 5:15 PM MDT	FUNNEL CLOUD	11 Ne Chappell, NE	TRAINED SPOTTER REPORTED SEEING A FUNNEL CLOUD WHICH REACHED HALF WAY TO THE GROUND.

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.0 hours before the alert went out and 140 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: 452 J/kg
Mixed-layer CIN: -322 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 0 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.

304 
WFUS53 KLBF 022259
TORLBF
NEC049-069-022330-
/O.NEW.KLBF.TO.W.0023.120802T2259Z-120802T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
459 PM MDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN DEUEL COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTH CENTRAL GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 530 PM MDT

* AT 455 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR INTERSECTION OF HIGHWAY 27 AND 9 MILE
  ROAD...OR 11 MILES SOUTH OF OSHKOSH...AND MOVING SOUTHEAST AT 20
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  BIG SPRINGS...WINDLASS HILL...GOLDENEYE STATE WILDLIFE MANAGEMENT
  AREA...HIGHWAY 27 MILE MARKER 100...HIGHWAY 30 MILE MARKER 100 AND
  INTERSTATE 80 MILE MARKER 100.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING AND 
THAT WAS IN EFFECT FOR THE SAME AREA.

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4124 10248 4137 10222 4121 10206 4100 10205
      4101 10231
TIME...MOT...LOC 2259Z 324DEG 18KT 4124 10233

$$

SPRINGER

1 follow-up statement

914 
WWUS53 KLBF 022312
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
612 PM CDT THU AUG 2 2012

NEC049-069-022330-
/O.CON.KLBF.TO.W.0023.000000T0000Z-120802T2330Z/
DEUEL NE-GARDEN NE-
512 PM MDT THU AUG 2 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL GARDEN AND
EASTERN DEUEL COUNTIES UNTIL 530 PM MDT...

AT 509 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 5 MILES SOUTH OF INTERSECTION OF HIGHWAY 27 AND 9
MILE ROAD...OR 10 MILES NORTHEAST OF CHAPPELL...MOVING SOUTHEAST AT
15 MPH.

LOCATIONS IMPACTED INCLUDE...
  BIG SPRINGS...GOLDENEYE STATE WILDLIFE MANAGEMENT AREA...HIGHWAY 27
  MILE MARKER 100...HIGHWAY 30 MILE MARKER 100 AND INTERSTATE 80 MILE
  MARKER 100.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4124 10248 4137 10222 4121 10206 4100 10205
      4101 10231
TIME...MOT...LOC 2313Z 330DEG 14KT 4119 10232

$$

SPRINGER

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 1, 6:06 PM MDT	Severe Thunderstorm Warning	LBF	Keith	23 min
Aug 1, 6:19 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	56 min
Aug 1, 6:28 PM MDT	Severe Thunderstorm Warning	LBF	Holt, Rock	62 min
Aug 1, 6:38 PM MDT	Severe Thunderstorm Warning	LBF	Garfield	52 min
Aug 1, 7:18 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	42 min
Aug 1, 7:23 PM MDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	52 min
Aug 2, 4:11 PM MDT	Severe Thunderstorm Warning	LBF	Garden	44 min
Aug 2, 4:17 PM MDT	Severe Thunderstorm Warning	LBF	Garden	43 min
Aug 2, 4:23 PM MDT	Tornado Warning	LBF	Garden	37 min
Aug 2, 5:29 PM MDT	Tornado Warning	LBF	Deuel, Garden	31 min

Nearby

Tornado Warnings in Nebraska, 2012 Every tornado warning in 2012 Tornadoes 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.