Alert archive / Nebraska / Tornado Warnings in 1990

Tornado Warning 19, NWS North Platte, NE

June 7, 1990Keya Paha County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 7, 1990, 6:22 PM CDT for Keya Paha County, Nebraska. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
Jun 7, 1990, 6:22 PM CDT (23:22 UTC)
Expired
Jun 7, 1990, 7:00 PM CDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Keya Paha County, NE

The radar

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.4 hours before the alert went out and 208 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 1990-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1210 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 12:00Z on 1990-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1210 J/kg
Mixed-layer CIN
-985 J/kg
Mixed-layer LCL
1191 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 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.

000 
TTAA00 KOFK 072322
TOROFK
NEC103-080000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE NORFOLK NE
622 PM CDT THU JUN 7 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE NORTH CENTRAL PART OF NEBRASKA
      KEYA PAHA

AT 618 PM RADAR INDICATED A POSSIBLE TORNADO ABOUT 5 MILES
WEST-NORTHWEST OF SPRINGVIEW IN CENTRAL KEYA PAHA COUNTY.

PERSONS LIVING IN SPRINGVIEW...MILLS AND JAMISON SHOULD TAKE
IMMEDIATE COVER.

THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE IN
THE PATH OF THIS TORNADO TAKE SHELTER BELOW GROUND IF POSSIBLE.
OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR.  AVOID
WINDOWS.  ABANDON CARS AND MOBILE HOMES...TAKE COVER IN A REINFORCED
BUILDING OR GET INTO A DITCH OR CULVERT.

 THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING DUE TO
 EXPIRE AT 630 PM CDT.

 KLEFFMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 5:06 PM CDTSevere Thunderstorm WarningLBFCherry24 min
Jun 7, 5:14 PM CDTSevere Thunderstorm WarningLBFKeya Paha46 min
Jun 7, 6:02 PM CDTSevere Thunderstorm WarningLBFKeya Paha28 min
Jun 7, 6:50 PM CDTSevere Thunderstorm WarningLBFHolt, Rock45 min

Nearby

Tornado Warnings in Nebraska, 1990Every tornado warning in 1990Tornadoes 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; the sounding from the Mesonet's radiosonde archive.