Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 1, NWS North Platte, NE

February 28, 2012Lincoln County, Logan County, Nebraska

NWS North Platte, NE issued this tornado warning at Feb 28, 2012, 4:15 PM CST for Lincoln County, Logan County, Nebraska. It was in force for 30 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
Feb 28, 2012, 4:15 PM CST (22:15 UTC)
Expired
Feb 28, 2012, 4:45 PM CST
In force
30 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon

Counties Lincoln County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 51 km from the middle of the area, began a volume at 22:15 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
Feb 28, 4:15 PM CSTTSTM WND DMG6 S Stapleton, NEDOORS BLOWN OFF OF MACHINE SHED. DELAYED REPORT.
Feb 28, 4:15 PM CSTTORNADO9 Wsw Gandy, NEOFF DUTY NWS EMPLOYEE REPORTED A TORNADO 9 MILES WSW OF GANDY.

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, 10.3 hours before the alert went out and 42 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 2012-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 456 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
720 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
456 m²/s²
0-3 km storm-relative helicity
433 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.

206 
WFUS53 KLBF 282215
TORLBF
NEC111-113-282245-
/O.NEW.KLBF.TO.W.0001.120228T2215Z-120228T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
415 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL LINCOLN COUNTY IN SOUTHWEST NEBRASKA...
  CENTRAL LOGAN COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 445 PM CST

* AT 410 PM CST...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 9 MILES
  SOUTH OF STAPLETON. DOPPLER RADAR SHOWED THIS TORNADO MOVING
  NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  STAPLETON AND GANDY AROUND 425 PM CST.
  TARBOZ LAKE AROUND 430 PM CST.

OTHER LOCATIONS IMPACTED BY THE TORNADO INCLUDE HIGHWAY 83 MILE
MARKER 120.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 4163 10052 4156 10033 4133 10056 4138 10064
TIME...MOT...LOC 2215Z 205DEG 33KT 4140 10054

$$

JACOBS
1 follow-up statement
286 
WWUS53 KLBF 282222
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
422 PM CST TUE FEB 28 2012

NEC111-282231-
/O.CAN.KLBF.TO.W.0001.000000T0000Z-120228T2245Z/
LINCOLN NE-
422 PM CST TUE FEB 28 2012

...THE TORNADO WARNING FOR NORTH CENTRAL LINCOLN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4141 10051 4144 10061 4163 10052 4156 10033
TIME...MOT...LOC 2221Z 192DEG 47KT 4150 10052

$$

NEC113-282245-
/O.CON.KLBF.TO.W.0001.000000T0000Z-120228T2245Z/
LOGAN NE-
422 PM CST TUE FEB 28 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL LOGAN COUNTY UNTIL
445 PM CST...

AT 419 PM CST...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR STAPLETON...MOVING NORTH AT 55 MPH.

AT 410 PM CST A TORNADO WAS REPORTED 9 MILES SOUTH OF STAPLETON. 

THE TORNADO WILL AFFECT MAINLY RURAL AREAS OF CENTRAL LOGAN COUNTY...
INCLUDING THE FOLLOWING LOCATIONS HIGHWAY 83 MILE MARKER 120.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 4141 10051 4144 10061 4163 10052 4156 10033
TIME...MOT...LOC 2221Z 192DEG 47KT 4150 10052

$$

JACOBS

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 4:45 PM CSTSevere Thunderstorm WarningLBFBlaine, Custer, Logan, Thomas45 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.