Alert archive / Nebraska / Tornado Warnings in 1991

Tornado Warning 42, NWS North Platte, NE

September 12, 1991Lincoln County, Nebraska

NWS North Platte, NE issued this tornado warning at Sep 12, 1991, 7:30 PM CDT for Lincoln County, Nebraska. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Sep 12, 1991, 7:30 PM CDT (00:30 UTC)
Expired
Sep 12, 1991, 8:00 PM CDT
In force
30 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Lincoln County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.5 hours before the alert went out and 15 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 00:00Z on 1991-09-13Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 1991-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLBF 130030
TORLBF
NEC111-130100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
730 PM CDT THU SEP 12 1991
 
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST NEBRASKA
 
   ...NORTHERN LINCOLN COUNTY
 
AT 721 PM CDT A PUBLIC REPORT OF A POSSIBLE FUNNEL CLOUD WAS
REPORTED 9 TO 10 MILES TO THE SOUTH OF LAKE MALONEY.
 
THE SEVERE THUNDERSTORM PRODUCING THE POSSIBLE FUNNEL CLOUD
WAS MOVING NORTHEAST AT 30 MPH.  PERSONS IN THE LAKE MALONEY
AREA AND THE CITY OF NORTH PLATTE SHOULD SEEK SAFE SHELTER
IMMEDIATELY.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO.  CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS.  IF YOU ARE CAUGHT IN THE PATH OF
A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.
 
SC

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Sep 12, 6:09 PM CDT, 1 hour 21 minutes before
NEZ012-130030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
610 PM CDT THU SEP 12 1991

...STRONG THUNDERSTORMS IN WEST CENTRAL NEBRASKA...

STRONG THUNDERSTORMS WERE LOCATED JUST iEAST OF THE NORTH PLATTE
AREA AND SHOULD BE MOVING NORTHEAST AT AROUND 20 MPH.

THESE STORMS COULD PRODUCE HEAVY RAIN..STRONG WINDS AND HAIL
AS THEY MOVE NORTHEAST THROUGH LINCOLN COUNTY BETWEEN 6 PM AND
8PM CDT.

RC

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 12, 7:17 PM CDTSevere Thunderstorm WarningLBFLincoln58 min
Sep 12, 8:06 PM CDTTornado WarningLBFLincoln9 min
Sep 12, 8:22 PM CDTSevere Thunderstorm WarningLBFLincoln68 min

Nearby

Tornado Warnings in Nebraska, 1991Every tornado warning in 1991Tornadoes in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.