Alert archive / Nebraska / Tornado Warnings in 1987

Tornado Warning 13, NWS Cheyenne, WY

June 23, 1987Banner County, Scotts Bluff County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 23, 1987, 6:02 PM MDT for Banner County, Scotts Bluff County, Nebraska. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jun 23, 1987, 6:02 PM MDT (00:02 UTC)
Expired
Jun 23, 1987, 6:30 PM MDT
In force
28 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Banner County, NE, Scotts Bluff 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

Denver, CO (KDEN), launched 00:00Z, 0.0 hours before the alert went out and 207 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, Denver, CO at 00:00Z on 1987-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 815 joules per kilogram.LCLLFCEL10008507005003002001001 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, Denver, CO at 00:00Z on 1987-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.19395878Sfc1 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
815 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
1600 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 240002
TORBFF
NEC007-157-240030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
602 PM MDT TUE JUN 23 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 630 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

PANHANDLE OF NEBRASKA...NORTHWEST BANNER AND WESTERN SCOTTS BLUFF

AT 600 PM MDT A POSSIBLE TORNADO WAS INDICATED BY RADAR 30 MILES
SOUTHWEST OF SCOTTSBLUFF NEBRASKA MOVING TO THE EAST AT 30 MPH.

PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF
AVAILABLE.  OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR.  CARS AND MOBILE HOMES SHOULD BE ABANDONED.

IN ADDITION ETO THE THREAT OF TORNADOES...LARGE HAIL...DANGEROUS
LIGHTNING AND VERY HEAVY RAIN ARE LIKELY WITH THIS STORM.

KIRK

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 6:35 PM MDTTornado WarningCYSBanner, Scotts Bluff25 min

Nearby

Tornado Warnings in Nebraska, 1987Every tornado warning in 1987Tornadoes in 1987

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.