Alert archive / Nebraska / Tornado Warnings in 1990

Tornado Warning 6, NWS North Platte, NE

May 18, 1990Lincoln County, Nebraska

NWS North Platte, NE issued this tornado warning at May 18, 1990, 6:25 PM CDT for Lincoln County, Nebraska. It was in force for 50 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 18, 1990, 6:25 PM CDT (23:25 UTC)
Expired: May 18, 1990, 7:15 PM CDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Lincoln County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where
May 18, 6:28 PM CDT	Tornado F1	Lincoln, NE
May 18, 6:47 PM CDT	Tornado F2	Lincoln, NE
May 18, 7:10 PM CDT	Hail 2.75	Lincoln, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.4 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-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: 43 J/kg
Mixed-layer CIN: -469 J/kg
Mixed-layer LCL: 1604 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 182326
TORLBF
NEC111-190015-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
625 PM CDT FRI MAY 18 1990
 
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  715 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST NEBRASKA
            LINCOLN COUNTY INCLUDING THE TOWN OF NORTH PLATTE
 
A TORNADO WAS IN THE SOUTHERN PART OF NORTH PLATTE MOVING NORTH AT 30
MPH. TAKE COVER.
 
 
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 BLANKET%S...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 5:48 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	57 min
May 18, 6:28 PM CDT	Severe Thunderstorm Warning	LBF	Knox	47 min
May 18, 6:46 PM CDT	Tornado Warning	LBF	Frontier, Hitchcock, Red Willow	44 min

Nearby

Tornado Warnings in Nebraska, 1990 Every tornado warning in 1990 Tornadoes in 1990

Sources

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