Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 22, NWS North Platte, NE

August 2, 2012Garden County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 2, 2012, 4:23 PM MDT for Garden County, Nebraska. It was in force for 37 min. 2 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 2, 2012, 4:23 PM MDT (22:23 UTC)
Expired: Aug 2, 2012, 5:00 PM MDT
In force: 37 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

County Garden County, NE

The radar

The North Platte radar (KLNX), 164 km from the middle of the area, began a volume at 22:23 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, 4:25 PM MDT	HAIL 0.88	6 Sw Oshkosh, NE	ALSO RECEIVED 0.70 INCHES OF RAINFALL.
Aug 2, 4:30 PM MDT	TORNADO	9 Sw Oshkosh, NE	A TORNADO WAS REPORTED BY THE PUBLIC TO THE GARDEN COUNTY NEWS.

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, 10.4 hours before the alert went out and 148 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.

370 
WFUS53 KLBF 022223
TORLBF
NEC069-022300-
/O.NEW.KLBF.TO.W.0022.120802T2223Z-120802T2300Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 500 PM MDT

* AT 419 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES WEST OF INTERSECTION OF HIGHWAY 27 AND 9
  MILE ROAD...OR 9 MILES SOUTHWEST OF OSHKOSH...AND MOVING EAST AT 20
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD.

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 4133 10224 4123 10226 4128 10251 4138 10250
TIME...MOT...LOC 2223Z 291DEG 17KT 4130 10242

$$

SPRINGER

1 follow-up statement

329 
WWUS53 KLBF 022239
SVSLBF

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

NEC069-022300-
/O.CON.KLBF.TO.W.0022.000000T0000Z-120802T2300Z/
GARDEN NE-
439 PM MDT THU AUG 2 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL GARDEN
COUNTY UNTIL 500 PM MDT...

AT 437 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 10 MILES SOUTH OF OSHKOSH...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD.

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 4133 10224 4123 10226 4128 10251 4138 10250
TIME...MOT...LOC 2240Z 284DEG 23KT 4127 10238

$$

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, 4:59 PM MDT	Tornado Warning	LBF	Deuel, Garden	31 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.