Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 24, NWS North Platte, NE

August 2, 2012Deuel County, Garden County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 2, 2012, 5:29 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, 5:29 PM MDT (23:29 UTC)
Expired
Aug 2, 2012, 6:00 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), 166 km from the middle of the area, began a volume at 23:32 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

TimeReportWhereRemark
Aug 2, 5:50 PM MDTTORNADO10 Wsw Big Springs, NESEDGWICK COUNTY SHERIFF OFFICE REPORTED TORNADO TWO MILES NORTH OF JULESBURG MOVING EAST.

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, 11.5 hours before the alert went out and 137 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2012-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 452 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2012-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

300 
WFUS53 KLBF 022329
TORLBF
NEC049-069-030000-
/O.NEW.KLBF.TO.W.0024.120802T2329Z-120803T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
529 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 600 PM MDT

* AT 528 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 6
  MILES SOUTH OF INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD...OR 10
  MILES NORTHEAST OF CHAPPELL. A TORNADO MAY DEVELOP AT ANY TIME.
  DOPPLER RADAR SHOWED THIS DANGEROUS STORM MOVING SOUTHEAST AT 5
  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 4129 10232 4115 10206 4101 10205 4099 10210
      4100 10234 4122 10249
TIME...MOT...LOC 2329Z 329DEG 5KT 4119 10233

$$

SPRINGER
1 follow-up statement
299 
WWUS53 KLBF 022343
SVSLBF

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

NEC069-022352-
/O.CAN.KLBF.TO.W.0024.000000T0000Z-120803T0000Z/
GARDEN NE-
543 PM MDT THU AUG 2 2012

...THE TORNADO WARNING FOR SOUTH CENTRAL GARDEN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF GARDEN COUNTY. 

LAT...LON 4123 10247 4122 10219 4115 10206 4101 10205
      4099 10210 4100 10211 4100 10234 4122 10249
TIME...MOT...LOC 2342Z 324DEG 12KT 4113 10227

$$

NEC049-030000-
/O.CON.KLBF.TO.W.0024.000000T0000Z-120803T0000Z/
DEUEL NE-
543 PM MDT THU AUG 2 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN DEUEL COUNTY UNTIL
600 PM MDT...

AT 537 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 10 MILES SOUTH OF INTERSECTION OF HIGHWAY 27 AND 9
MILE ROAD...OR 10 MILES EAST OF CHAPPELL...MOVING SOUTHEAST AT 15
MPH.

LOCATIONS IMPACTED INCLUDE...
  BIG SPRINGS...GOLDENEYE STATE WILDLIFE MANAGEMENT AREA...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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

&&

LAT...LON 4123 10247 4122 10219 4115 10206 4101 10205
      4099 10210 4100 10211 4100 10234 4122 10249
TIME...MOT...LOC 2342Z 324DEG 12KT 4113 10227

$$

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 6:06 PM MDTSevere Thunderstorm WarningLBFKeith23 min
Aug 1, 6:19 PM MDTSevere Thunderstorm WarningLBFBlaine, Loup56 min
Aug 1, 6:28 PM MDTSevere Thunderstorm WarningLBFHolt, Rock62 min
Aug 1, 6:38 PM MDTSevere Thunderstorm WarningLBFGarfield52 min
Aug 1, 7:18 PM MDTSevere Thunderstorm WarningLBFLincoln42 min
Aug 1, 7:23 PM MDTSevere Thunderstorm WarningLBFHolt, Wheeler52 min
Aug 2, 4:11 PM MDTSevere Thunderstorm WarningLBFGarden44 min
Aug 2, 4:17 PM MDTSevere Thunderstorm WarningLBFGarden43 min
Aug 2, 4:23 PM MDTTornado WarningLBFGarden37 min
Aug 2, 4:59 PM MDTTornado WarningLBFDeuel, Garden31 min

Nearby

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